Urography This is an OPML file. It can be used to export all the MedWorm RSS feeds on this topic into your personal RSS reader (usually you have to save this file to your own computer before clicking on an Import OPML command in your own feed reader to upload the file which will then import all the feeds) or it can be used by webmasters to integrate MedWorm feeds with their own website. This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

This page shows you the latest news and research items in this category.

Classification of Ureteral Stenosis and Associated Strategy for Treatment After Kidney Transplant.
CONCLUSIONS: This classification of ureteral stenosis provides guidance for effective management and avoids unnecessary procedures. In this series, ureteral stenosis was significantly associated with a live donor and surgical complications. PMID: 23428202 [PubMed - as supplied by publisher] (Source: Experimental and Clinical Transplantation : official journal of the Middle East Society for Organ Transplantation)
Source: Experimental and Clinical Transplantation : official journal of the Middle East Society for Organ Transplantation - February 21, 2013 Category: Transplant Surgery Authors: He B, Bremner A, Han Y Tags: Exp Clin Transplant Source Type: research

Performance of Computed Tomographic Urography for the Detection of Bladder Tumors in Patients With Microscopic Hematuria.
CONCLUSIONS: Although computed tomography has a high specificity its sensitivity is limited. For this reason conventional cystoscopy should be considered the standard for bladder evaluation of patients with microscopic hematuria. PMID: 23398811 [PubMed - as supplied by publisher] (Source: Actas Urologicas Espanolas)
Source: Actas Urologicas Espanolas - February 8, 2013 Category: Urology & Nephrology Authors: Aguilar-Davidov B, Ramírez-Muciño A, Culebro-García C, Sotomayor M, Castillejos-Molina R, Feria-Bernal G, Rodríguez-Covarrubias F Tags: Actas Urol Esp Source Type: research

Crossed fused renal ectopia: Challenges in diagnosis and management
Conclusions: Crossed fused renal ectopia was detected in most patients during investigation for other problems. It was found more commonly in boys. The left moiety was crossed to the right in the majority of cases. Associated urological problems were found in most cases and required the appropriate surgical management. (Source: Journal of Indian Association of Pediatric Surgeons)
Source: Journal of Indian Association of Pediatric Surgeons - February 7, 2013 Category: Surgery Authors: Shailesh SolankiVeereshwar BhatnagarArun K GuptaRakesh Kumar Source Type: research

MR imaging of renal collecting system with gadoxetate disodium: Feasibility for MR urography
Conclusion:Gadoxetate disodium contrast produced a high degree of opacification of the proximal urinary collecting system with low incidence of susceptibility artifact; therefore, it is a feasible contrast agent for MR urography. J. Magn. Reson. Imaging 2013;. © 2013 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)
Source: Journal of Magnetic Resonance Imaging - February 1, 2013 Category: Radiology Authors: R. Joshua Dym, Victoria Chernyak, Alla M. Rozenblit Tags: Original Research Source Type: research

Evaluation in an Animal Model of a Hybrid Covered Metallic Ureteral Stent: A New Design
Conclusion: Our experimental results have indicated that the use of the hybrid metallic ureteral self-expanding internally covered stent in ureteral strictures is feasible, safe, and effective and reduces the formation of urothelial hyperplasia without secondary interventions to maintain ureteral patency. (Source: Urology)
Source: Urology - January 31, 2013 Category: Urology & Nephrology Authors: Federico Soria, Esther Morcillo, Manuel Pamplona, Jesus Uson, Francisco M. Sanchez-Margallo Tags: Technology and Engineering Source Type: research

Quiz Page February 2013: Rapidly Recurrent Nephrolithiasis
A 38-year-old woman was admitted with right flank pain, fever, and chills that had begun the day before. She had a history of recurrent hypokalemia: it first had been detected incidentally at her annual examination 3 years earlier, but she did not receive either regular clinic follow-up or formal evaluation thereafter. She reported no use of diuretics or laxatives. She was slim, weighing 47 kg with a body mass index of 19 kg/m2. Temperature was 39.3°C, and blood pressure was 110/70 mm Hg. Laboratory examinations showed leukocytosis and potassium level of 2.3 mEq/L; additional biochemical study results are listed in . An a...
Source: American Journal of Kidney Diseases - January 14, 2013 Category: Urology & Nephrology Authors: Ying-Tang Wang, Chih-Chien Sung, Seng-Tang Wu, Shih-Hua Lin Tags: Research Letters Source Type: research

Management of a renal calculus larger than 4 cm in a patient with tuberous sclerosis complex-associated angiomyolipoma
We describe the case of a 65-year-old man having tuberous sclerosis complex-associated multifocal renal angiomyolipomas with a large renal calculus. The patient presented with left flank dullness and a previous history of spontaneous angiomyolipoma rupture. Intravenous pyelography revealed a 43 × 16 mm calculus in the pelvis and lower calyx of the left kidney. The calculus was successfully removed by retrograde flexible ureterorenoscopy and holmium-YAG lithotripsy. Flexible ureterorenoscopy is an effective, minimally invasive therapy for patients at high risk of renal hemorrhage. (Source: Indian Journal of Urology)
Source: Indian Journal of Urology - January 10, 2013 Category: Urology & Nephrology Authors: Koichi KodamaYasukazu TakaseIsamu Motoi Source Type: research

Intravenous urography supplemented with computerised tomography urogram: A pragmatic hybrid imaging approach to hydronephrosis
Conclusions: The concept of a CTU limited to a single-phase study to supplement an inconclusive IVU optimizes the contrast and radiation dose to the affected patients. It is a cost-effective, timely, and definitive 'imaging intervention' and should be considered a viable hybrid technique to be utilized selectively and judiciously. (Source: Indian Journal of Urology)
Source: Indian Journal of Urology - January 10, 2013 Category: Urology & Nephrology Authors: Raju A GeorgeAneesh MohimenJyotindu DebnathLovleen SatijaPiyush JoshiSubhash C Godara Source Type: research

The Role of Static Magnetic Resonance Urography in the Evaluation of Obstructive Uropathy
Conclusion: Along with a high sensitivity and specificity in detecting the presence, level, and grade of hydronephrosis, MRU without contrast also shows a good agreement with IVU. Static MRU can reliably replace IVU when the latter is contraindicated or technically difficult. (Source: Urology)
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Prakash Muthusami, Venkatesan Bhuvaneswari, Sundararajan Elangovan, Lalgudi N. Dorairajan, Ananthakrishnan Ramesh Tags: Prostatic Diseases and Male Voiding Dysfunction Source Type: research

Editorial Comment
The authors offer use of static magnetic resonance urography (MRU) in diagnosing hydronephrotic or obstructed renal pathology as opposed to conventional intravenous urography (IVU). They found that the sensitivity and the specificity of MRU was 95% and 100%, respectively, for finding hydronephrosis, although determining the exact grade of obstruction was not as precise (from 33.3% to 92.6% with increasing grades of hydronephrosis). Calculus disease was only determined in 46.6% of imaging studies, but this review was based on elective imaging only. (Source: Urology)
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Irene M. McAleer Tags: Prostatic Diseases and Male Voiding Dysfunction Source Type: research

Reply
As clearly and compendiously stated by the reviewer, magnetic resonance urography (MRU) has the potential to be the much anticipated alternative to investigations that require the use of ionizing radiation and contrast. The oncogenic risks attributed to computed tomography (CT) are augmented in urologic studies, which typically require dual or triple phase scanning. Although CT with or without contrast has by and large replaced intravenous urography (IVU), we are not alone in the belief that the latter cannot yet be written off, more so in resource-poor settings. It is again the cost, along with ease of interpretation, exc...
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Prakash Muthusami, Lalgudi N. Dorairajan Tags: Prostatic Diseases and Male Voiding Dysfunction Source Type: research

Rare Case of Atrophic Ectopic Kidney With Giant Hydronephrosis in a 7-Year-Old Girl
We report a case of 7-year-old girl presenting with abdominal fullness. The imaging characteristics of magnetic resonance urography of the lesions are reported. The findings from the radiologic investigations were suggestive of a dysplastic ectopic pelvic kidney with giant hydronephrosis. Subsequent surgery confirmed the diagnosis. An ectopic kidney with giant hydronehrosis is an extremely rare condition in children and can present as an asymptomatic abdominal mass. A careful survey for other structural anomalies is mandatory in such cases. (Source: Urology)
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Ming-Yu Hsieh, Min-Sho Ku, Teng-Fu Tsao, Shan-Ming Chen, Yu-Hua Chao, Jeng-Dau Tsai, Ko-Huang Lue, Ji-Nan Sheu Tags: Pediatric Case Reports Source Type: research

Comparison of Seromuscular Tunnel and Split-cuff Nipple Antireflux Ureteroenteral Anastomosis Techniques in Orthotopic Taenia Myectomy Sigmoid Neobladder: A Prospective, Randomized Study
Conclusion: No difference in stricture formation was seen between the patients treated with the seromuscular tunnel or split-cuff nipple ureteroenteral anastomosis techniques in the orthotopic taenia myectomy sigmoid neobladder. No patients developed reflux. Our results suggest that both the seromuscular tunnel and the split-cuff nipple approach are reliable antireflux ureterointestinal anastomosis techniques, with low morbidity for orthotopic taenia myectomy sigmoid neobladder. (Source: Urology)
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Abai Xu, Bingkun Li, Hulin Li, Shaobo Zheng, Wei Du, Yawen Xu, Yong Zou, Qiangxiang Luo, Chunxiao Liu Tags: Reconstructive Urology Source Type: research

Irreversible Electroporation: Evaluation of Nonthermal and Thermal Ablative Capabilities in the Porcine Kidney
Conclusion: NT-IRE and T-IRE both safe and effectively ablate normal porcine kidneys. NT-IRE created smaller lesions with unique histologic characteristics. Significant collecting system injury occurred with T-IRE. Additional preclinical evaluation aimed at optimizing the ablation protocols is needed. (Source: Urology)
Source: Urology - January 4, 2013 Category: Urology & Nephrology Authors: Ephrem O. Olweny, Payal Kapur, Yung K. Tan, Samuel K. Park, Mehrad Adibi, Jeffrey A. Cadeddu Tags: Technology and Engineering Source Type: research

Supine Percutaneous Nephrolithotomy for Bilateral Complete Staghorn Calculi in an L-shaped Cross-fused Renal Ectopic Anomaly
A 68-year-old woman was diagnosed to have a left-to-right L-shaped crossed-fused kidney with staghorn calculi in both renal moieties on evaluation for abdominal pain. She underwent supine percutaneous nephrolithotomy using 3 tracts in 3 stages. By using 3-dimensional reconstructed computed tomography urogram, proper preoperative planning, appropriate patient positioning, ultrasound-guided access, intraoperative traction, and flexible nephroscopy, complete stone clearance can be achieved in seemingly difficult stones in anomalous kidneys. (Source: Urology)
Source: Urology - December 27, 2012 Category: Urology & Nephrology Authors: Shashikant Mishra, Raguram Ganesamoni, Arvind P. Ganpule, Ravindra B. Sabnis, Mahesh R. Desai Tags: Images in Clinical Urology Source Type: research

Is Intravenous Urography Required When Ultrasonography and KUB Evidence a Ureteroscopy Plan?
CONCLUSION: Intravenous urography is not useful enough to be performed routinely before entire USEs. PMID: 23235967 [PubMed - in process] (Source: Urology Journal)
Source: Urology Journal - December 20, 2012 Category: Urology & Nephrology Authors: Aghamir SM, Modaresi SS, Salavati A, Aloosh M, Meysami AP Tags: Urol J Source Type: research

Renal Calyceal Anatomy Characterization with 3-Dimensional In Vivo Computerized Tomography Imaging
Conclusions: Appropriate lower pole calyceal access can be reliably accomplished with an understanding of the anatomical relationship between individual calyceal orientation and the primary plane of the calyceal group. Calyx 2 is most often appropriate for accessing the anteroposterior primary plane of the lower pole. Calyx 1 is most commonly oriented anterior. (Source: The Journal of Urology)
Source: The Journal of Urology - December 20, 2012 Category: Urology & Nephrology Authors: Joe Miller, Jeremy C. Durack, Mathew D. Sorensen, James H. Wang, Marshall L. Stoller Tags: Urolithiasis/Endourology Source Type: research

Evaluation of CT urography as a second-line investigation in patients presenting with visible haematuria in the Highland region
Background: Visible haematuria is a cardinal symptom of urinary tract malignancy, and is commonly investigated initially with cystoscopy and ultrasonography. CT urography replaced IV urography as the second-line investigation in the Highlands in 2005 but its ability to detect significant urological pathology, not otherwise picked up by ultrasound and cystoscopy, has never been assessed. (Source: International Journal of Surgery)
Source: International Journal of Surgery - December 10, 2012 Category: Surgery Authors: Ola Blach Tags: Abstracts from the Second NUGSC Source Type: research

Single-phase dual-energy CT urography in the evaluation of haematuria
Conclusion: Single-phase DECT urography with synchronous nephrographic–excretory phase enhancement represents an accurate “all-in-one’’ approach with a radiation dose saving up to 45% compared with a standard dual-phase protocol. (Source: Clinical Radiology)
Source: Clinical Radiology - December 10, 2012 Category: Radiology Authors: G. Ascenti, A. Mileto, M. Gaeta, A. Blandino, S. Mazziotti, E. Scribano Tags: Original Papers Source Type: research

Inverted papilloma of the ureter: study of a rare case with emphasis on clinicopathologic implications.
Abstract A 62-year old male patient presented complaining of intermittent macroscopic hematuria. The ultrasonographic investigation revealed a hydronephrosis of remarkable degree with indiscrete renal parenchyma. The abdominal computed tomography scan identified a ureteral lesion with proximal dilatation, hydronephrosis and a functionless ipsilateral renal unit. The retrograde urography showed a 4-cm lesion with multiple filling defects and a smooth contour. The endoscopic examination showed an exophytic lesion, highly suspicious for malignancy. Urine cytology revealed atypia. Right nephroureterectomy was performed...
Source: Canadian Urological Association Journal - December 1, 2012 Category: Urology & Nephrology Authors: Mertziotis N, Kozyrakis D, Petrolekas A, Terzi M, Kapranos N Tags: Can Urol Assoc J Source Type: research

Robotic Anderson–Hynes dismembered pyeloplasty: initial experience
ConclusionsRobotic surgery offers better ergonomics, enhanced three‐dimensional (3D) vision and more precise movements, easing intracorporeal suturing.These advantages make robotic pyeloplasty a reproducible technique that combines the high success rates of open surgery and the benefits of laparoscopic surgery. Copyright © 2013 John Wiley & Sons, Ltd. (Source: The International Journal of Medical Robotics and Computer Assisted Surgery)
Source: The International Journal of Medical Robotics and Computer Assisted Surgery - December 1, 2012 Category: Surgery Authors: Jesús Moreno‐Sierra, Ignacio Castillon‐Vela, Elena Ortiz‐Oshiro, Isabel Galante‐Romo, Cristina Fernandez‐Perez, Jose L. Senovilla‐Perez, Javier Casado‐Varela, Hector Garde‐Garcia, Cesar Chavez‐Roa, Vicente Vera‐Gonzalez Tags: ORIGINAL ARTICLE Source Type: research

Safety and adverse effects during 24 hours after contrast-enhanced MRI with gadobenate dimeglumine (MultiHance®) in children
Conclusions No adverse events were recorded during the first 24 h following administration of gadobenate dimeglumine in 200 children. Content Type Journal ArticleCategory Original ArticlePages 1-10DOI 10.1007/s00247-012-2498-8Authors Guenther Schneider, Homburg University Hospital, Homburg, Saar, GermanyHellmut Schürholz, Homburg University Hospital, Homburg, Saar, GermanyMiles A. Kirchin, Bracco Imaging SpA, Milan, ItalyArno Bücker, Homburg University Hospital, Homburg, Saar, GermanyPeter Fries, Homburg University Hospital, Homburg, Saar, Germany Journal Pediatric RadiologyOnline ISSN 143...
Source: Pediatric Radiology - November 25, 2012 Category: Radiology Tags: Pediatric Radiology Source Type: research

Validation of reference genes from Eucalyptus spp. under different stress conditions
Conclusion: Comparing these results with those of other studies on eucalyptus, we concluded that five genes are stable in different species and experimental conditions: IDH, SAND, ACT, A-Tub, and UBQ (ubiquitin). It is usually recommended a minimum of two reference genes is expression analysis; therefore, we propose that IDH and two others genes among the five identified genes in this study should be used as reference genes for a wide range of conditions in eucalyptus. (Source: BMC Research Notes)
Source: BMC Research Notes - November 14, 2012 Category: Research Authors: Jullyana MouraPedro AraújoMichael BritoUiara SouzaJuliana VianaPaulo Mazzafera Source Type: research

In Vivo Evaluation of the Third Generation Biodegradable Stent: A Novel Approach to Avoiding the Forgotten Stent Syndrome
Conclusions: The third generation biodegradable stent is a safe, effective alternative to conventional polymer stents, resulting in equivalent drainage and less hydronephrosis. (Source: The Journal of Urology)
Source: The Journal of Urology - October 31, 2012 Category: Urology & Nephrology Authors: Ben H. Chew, Ryan F. Paterson, Kenneth W. Clinkscales, Barry S. Levine, Shalaby W. Shalaby, Dirk Lange Tags: Investigative Urology Source Type: research

Re: Xu et al. Doppler Ultrasound-guided Percutaneous Nephrolithotomy With Two-Step Tract Dilation for Management of Complex Renal Stones (Urology 2012;79:1247-1251)
We appreciate the authors for conducting their study on the safety and efficacy of Doppler ultrasound (USG)-guided percutaneous nephrolithotomy, but a few points need clarification. The authors do not mention whether the urologist or radiologist made the puncture. This is important because USG is operator dependent and experience in this field is an absolute requisite for an accurate puncture. After track dilation, an 8F or 9.8F rigid ureteroscope was inserted to identify the tract of entry into the collecting system. Was this the standard protocol? Why was intravenous urography or computed tomography done preoperatively w...
Source: Urology - October 29, 2012 Category: Urology & Nephrology Authors: Rohit Kathpalia, Swarnendu Mandal, Satya Narayan Sankhwar Tags: Letters to the Editor Source Type: research

Involvement of caspase-12-dependent apoptotic pathway in ionic radiocontrast urografin-induced renal tubular cell injury.
Abstract Contrast medium (CM) induces a direct toxic effect on renal tubular cells. This toxic effect subjects in the disorder of CM-induced nephropathy. Our previous work has demonstrated that CM shows to activate the endoplasmic reticulum (ER)-related adaptive unfolding protein response (UPR) activators. Glucose-regulated protein 78 (GRP78)/eukaryotic initiation factor 2α (eIF2α)-related pathways play a protective role during the urografin (an ionic CM)-induced renal tubular injury. However, the involvement of ER stress-related apoptotic signals in the urografin-induced renal tubular cell injury remains unclear...
Source: Toxicology and Applied Pharmacology - October 29, 2012 Category: Toxicology Authors: Wu CT, Weng TI, Chen LP, Chiang CK, Liu SH Tags: Toxicol Appl Pharmacol Source Type: research

Auto-Initialized Cascaded Level Set (AI-CALS) Segmentation of Bladder Lesions on Multidetector Row CT Urography
Conclusion: Our preliminary study demonstrates the feasibility of using the three-dimensional level set method for segmenting bladder lesions in CTU scans. (Source: Academic Radiology)
Source: Academic Radiology - October 22, 2012 Category: Radiology Authors: Lubomir Hadjiiski, Heang-Ping Chan, Elaine M. Caoili, Richard H. Cohan, Jun Wei, Chuan Zhou Tags: Original Investigations Source Type: research

Re: Diagnostic Yield of CT Urography in the Evaluation of Young Adults with Hematuria
R. P. Lokken, C. A. Sadow and S. G. Silverman Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, Massachusetts (Source: The Journal of Urology)
Source: The Journal of Urology - October 22, 2012 Category: Urology & Nephrology Authors: Cary Siegel Tags: Imaging Source Type: research

Upper Urinary Tract Recurrence Following Radical Cystectomy for Bladder Cancer: A Meta-Analysis on 13,185 Patients
Conclusions: The recurrence values could appear low when considering the pan-urothelial field defect theory, but these values reflect, in part, the mortality associated with the initial bladder cancer. Based on anamnesis and pathological examination of cystectomy specimens, a group of patients is at high risk. Extensive regular followup with cytology, urography and loopgraphy yields insufficient benefits. Periodic computerized tomography with urography combines the ability to study the upper urinary tract oncologically and functionally, and the identification of any parenchymal, osseous or lymph node secondary lesion. (So...
Source: The Journal of Urology - October 18, 2012 Category: Urology & Nephrology Authors: Stefano Picozzi, Cristian Ricci, Maddalena Gaeta, Dario Ratti, Alberto Macchi, Stefano Casellato, Giorgio Bozzini, Luca Carmignani Tags: Review Article Source Type: research

[Patient radiation exposure during ureteroscopic stone extraction.]
CONCLUSION: Patient radiation exposure during ureteroscopic stone extraction is comparable to patient radiation exposure using plain film urography or low-dose non-contrast-enhanced computed tomography for diagnosis of urolithiasis. PMID: 23052980 [PubMed - as supplied by publisher] (Source: Der Urologe. Ausg. A)
Source: Der Urologe. Ausg. A - October 7, 2012 Category: Urology & Nephrology Authors: Zöller G, Virsik-Köpp P, Vowinkel C Tags: Urologe A Source Type: research

Radiologic Imaging of Patients With Bladder Cancer
Imaging has an ancillary but important role in the detection, staging, and follow-up of bladder cancer. Computed tomography urography (CTU) has widely replaced intravenous urography (IVU) and is currently the imaging modality most commonly used for the initial evaluation of patients with or suspected of having bladder tumors, as CTU allows a fast and comprehensive evaluation of the urinary tract in a single exam. Magnetic resonance imaging (MRI) affords better soft tissue contrast, which allows for more accurate staging than can be achieved with other imaging modalities; the role of MRI in bladder cancer is expected to gro...
Source: Seminars in Oncology - October 1, 2012 Category: Cancer & Oncology Authors: Andrei S. Purysko, Hilton M. Leão Filho, Brian R. Herts Tags: Derek Raghavan, MD, PhD, FACP, FRACP, Guest Editor Source Type: research

Antegrade pressure measurement of urinary tract in children with persistent hydronephrosis
CONCLUSIONS: APM avoided unnecessary surgery in one third of the cases and was important to treatment decision in 100%. We believe that this simple test is an excellent diagnostic tool when selectively applied mainly in the presence of functional deficit. (Source: International Braz J Urol)
Source: International Braz J Urol - September 26, 2012 Category: Urology & Nephrology Source Type: research

Hydronephrosis and renal failure following inadequate management of neuropathic bladder in a patient with spinal cord injury: Case report of a preventable complication.
CONCLUSION: Spinal cord injury patients with high intravesical pressure should not have penile sheath drainage as these patients are at risk for developing hydronephrosis and renal failure. Intermittent catheterisation along with antimuscarinic drug should be the preferred option for managing neuropathic bladder. PMID: 23014062 [PubMed - as supplied by publisher] (Source: Patient Safety in Surgery)
Source: Patient Safety in Surgery - September 26, 2012 Category: Surgery Authors: Vaidyanathan S, Selmi F, Abraham KA, Hughes PL, Singh G, Soni BM Tags: Patient Saf Surg Source Type: research

Predictive Value of Current Imaging Modalities for the Detection of Urolithiasis During Pregnancy: a Multicenter, Longitudinal Study
Conclusions: The rate of negative ureteroscopy was 14% among pregnant women undergoing intervention in our series. Of the group treated surgically after imaging with ultrasound alone, 23% had no ureteral stone, resulting in the lowest positive predictive value of the modalities used. Alternative imaging techniques, particularly low dose computerized tomography, offer improved diagnostic information that can optimize management and obviate unnecessary intervention. (Source: The Journal of Urology)
Source: The Journal of Urology - September 25, 2012 Category: Urology & Nephrology Authors: Wesley M. White, Elizabeth B. Johnson, Nikki B. Zite, John Beddies, Amy E. Krambeck, Elias Hyams, Tracy Marien, Ojas Shah, Brian Matlaga, Vernon M. Pais Tags: Urolithiasis/Endourology Source Type: research

A Novel Method of Evaluating Ureteropelvic Junction Obstruction: Dynamic Near Infrared Fluorescence Imaging Compared to Standard Modalities to Assess Urinary Obstruction in a Swine Model
Conclusions: Near infrared imaging offers a feasible way to obtain live, dynamic images of urine flow and ureteral peristalsis. Qualitative and quantitative parameters were comparable to those of conventional imaging. Findings support fluorescence imaging as an accurate, easy to use method of diagnosing ureteropelvic junction obstruction. (Source: The Journal of Urology)
Source: The Journal of Urology - September 21, 2012 Category: Urology & Nephrology Authors: Courtney K. Rowe, Felipe B. Franco, Joao A.B.A. Barbosa, Brian J. Minnillo, Jeanne S. Chow, Ted Treves, Alan B. Retik, Hiep T. Nguyen Tags: Investigative Urology Source Type: research

The Urological Dyna-CT: ex vivo feasibility study of interventional cross-sectional imaging in the endourological operation room
Conclusion The combination of an Artis Zee® Ceiling (Siemens Medical Solutions, Erlangen, Germany) with our newly developed urological intervention table we call the Urological Dyna-CT. In addition to such standard procedures as fluoroscopy or plain X-rays, cross-sectional imaging and 3D reconstruction of the urinary tract are possible and provide fast and excellent urological imaging. Content Type Journal ArticleCategory Original ArticlePages 1-4DOI 10.1007/s00345-012-0951-9Authors M. S. Michel, Department of Urology, Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 M...
Source: World Journal of Urology - September 20, 2012 Category: Urology & Nephrology Tags: World Journal of Urology Source Type: research

How Much Dose Can Be Saved in Three-Phase CT Urography? A Combination of Normal-Dose Corticomedullary Phase With Low-Dose Unenhanced and Excretory Phases
CONCLUSION. With a three-phase CT urographic protocol, significant dose reductions in the unenhanced and excretory phases can be achieved when these phases are combined with a normal-dose corticomedullary phase. (Source: American Journal of Roentgenology)
Source: American Journal of Roentgenology - September 20, 2012 Category: Radiology Authors: Dahlman, P., van der Molen, A. J., Magnusson, M., Magnusson, A. Tags: Medical Physics and Informatics Source Type: research

Targeted Delayed Scanning at CT Urography: A Worthwhile Use of Radiation? [Genitourinary Imaging]
Conclusion: Targeted delayed scanning at CT urography yielded no additional ureteral tumors and resulted in additional radiation exposure. © RSNA, 2012 (Source: Radiology)
Source: Radiology - September 19, 2012 Category: Radiology Authors: Hack, K., Pinto, P. A., Gollub, M. J. Tags: Genitourinary Radiology Genitourinary Imaging Source Type: research

Quiz Page October 2012: Flank Pain, Hypertension, and Proteinuria
A 34-year-old woman with no significant medical or familial history was evaluated for 1 week of intermittent bouts of mild flank pain, occasionally associated with nausea and vomiting. The patient denied fever, chills, or hematuria. On physical examination, blood pressure was 150/100 mm Hg and bilateral flank fullness and tenderness were noted. Laboratory tests showed serum creatinine level of 0.85 mg/dL ([75.5 μmol/L], corresponding to estimated glomerular filtration rate of 65 mL/min according to the Cockcroft-Gault equation) and symmetric kidney function by emission computed tomography (CT; left, 30 mL/min; right, 35 m...
Source: American Journal of Kidney Diseases - September 17, 2012 Category: Urology & Nephrology Authors: Haifeng Hao, Yunnan Cai, Gang Li, Ye Zhang Source Type: research

Virtual unenhanced CT images acquired from dual-energy CT urography: Accuracy of attenuation values and variation with contrast material phase
Aim: To determine how representative virtual unenhanced (VNE) images are of true unenhanced (TNE) images when performing computed tomography (CT) urography on a dual-energy CT (DECT) system, and whether the images are affected by the contrast material phase.Materials and methods: In this retrospective, institutional review board-approved, Health Insurance Portability and Accountability Act (HIPAA)-compliant study, TNE were compared with VNE images derived from the nephrographic (VNEn) and excretory (VNEe) phases in 100 consecutive CT urograms. Two readers in consensus measured attenuation values of abdominal organs, fat, a...
Source: Clinical Radiology - September 12, 2012 Category: Radiology Authors: V.A. Sahni, A.B. Shinagare, S.G. Silverman Tags: Original Papers Source Type: research

Effects of furosemide on ureteral diameter and attenuation using computed tomographic excretory urography in normal dogs
One of the limitations of computed tomographic excretory urography (CTEU) for diagnosis of ureteral disease in dogs is that normal ureteral peristalsis can cause intermittent and inconsistent filling. The aims of this study were to determine if the addition of furosemide to a standard CTEU protocol would increase identification of the ureteral segments, increase ureteral attenuation and increase ureteral diameter in normal dogs. Standard and furosemide‐enhanced CTEU scans were acquired in 14 healthy dogs 3 and 10 minutes postcontrast. Ureteral diameters, attenuation values, and percent ureteral filling scores were record...
Source: Veterinary Radiology and Ultrasound - September 11, 2012 Category: Veterinary Research Authors: Scott Secrest, Stephanie Essman, Jesse Nagy, Loren Schultz Tags: Original Investigation Source Type: research

Forgotten long-term indwelling double "J" stent.
Abstract A poor, uneducated patient from a rural background presented to us with burning micturition and colicky pain in the loin. He had undergone surgery for pelvi-ureteric junction (PUJ) obstruction on the right side four years earlier. Following surgery, the patient was irregular in his follow-up and, as such, he did not get the double "J" (DJ) stent, which was placed during surgery, removed. Ultrasonography performed during the present admission revealed mild hydronephrosis of the right kidney with a tiny calculus in the urinary bladder. Intravenous urography revealed mild hydronephrosis with the DJ stent in s...
Source: Saudi Journal of Kidney Diseases and Transplantation - September 1, 2012 Category: Urology & Nephrology Authors: Wani B, Upadhey R, Rathod V, Bhole A Tags: Saudi J Kidney Dis Transpl Source Type: research

Study finds frequent incidental findings at MDCT urography
Researchers at Rhode Island Hospital are finding more than urinary problems (more) (Source: AuntMinnie.com Headlines)
Source: AuntMinnie.com Headlines - August 29, 2012 Category: Radiology Source Type: news

Is Bowel Preparation Necessary Before kidney-Ureter-Bladder Radiography and Intravenous Urography?
CONCLUSION: Bowel preparation prior to KUB and IVU does not improve the quality of the images in patients with normal bowel habits. However, a significantly better visualization of KUB was noted among patients with chronic constipation who had received bowel preparation. PMID: 22903484 [PubMed - in process] (Source: Urology Journal)
Source: Urology Journal - August 25, 2012 Category: Urology & Nephrology Authors: Dadkhah F, Safarinejad MR, Amini E, Soleimani M, Lashay AR Tags: Urol J Source Type: research

[Transparency regime : Semiotics of radiographical images in urological diagnostics.]
[Transparency regime : Semiotics of radiographical images in urological diagnostics.] Urologe A. 2012 Aug 24; Authors: Martin M, Fangerau H Abstract Shortly after Röntgen discovered x-rays urology became one of the main test fields for the application of this new technology. Initial scepticism among physicians, who were inclined to cling to traditional manual methods of diagnosing, was replaced by enthusiasm for radiographic technologies and the new method soon became the standard in, for example the diagnosis of concrements. Patients favoring radiographic procedures over the use of probes and a convincing...
Source: Der Urologe. Ausg. A - August 24, 2012 Category: Urology & Nephrology Authors: Martin M, Fangerau H Tags: Urologe A Source Type: research

Incidental Clinically Important Extraurinary Findings at MDCT Urography for Hematuria Evaluation: Prevalence in 1209 Consecutive Examinations
CONCLUSION. The prevalence of clinically important incidental extraurinary findings at MDCT urography performed for hematuria was 6.8%. (Source: American Journal of Roentgenology)
Source: American Journal of Roentgenology - August 22, 2012 Category: Radiology Authors: Song, J. H., Beland, M. D., Mayo-Smith, W. W. Tags: Genitourinary Imaging Source Type: research

Urothelial carcinoma of the upper urinary tract diagnosed via FGFR3 mutation detection in urine: a case report
Conclusion: This study indicates that the FGFR3 urine assay, which was originally developed to monitor bladder cancer, is also a useful tool for diagnosing upper urinary tract cancer in a real-life setting. (Source: BMC Urology - Latest articles)
Source: BMC Urology - Latest articles - August 8, 2012 Category: Urology & Nephrology Authors: Daniel Silverberg Source Type: research

Characterisation of urinary stones in the presence of iodinated contrast medium using dual-energy CT: a phantom study
Conclusion The region-growing method improves differentiation of UA from non-UA stones on contrast-enhanced DECT urograms. Key Points • Computed tomography is widely used to assess renal tract calculi • Dual-energy CT can assess stone composition and provide virtual unenhanced images • However, iodinated contrast medium affects the volume estimation for urinary stones. • CTR of stones is altered by the surrounding iodine in CT urograms. • The region-growing method improves the identification of uric acid stones. Content Type Journal A...
Source: European Radiology - August 4, 2012 Category: Radiology Tags: European Radiology Source Type: research

Targeted Delayed Scanning at CT Urography: A Worthwhile Use of Radiation? [Genitourinary Imaging]
In our study, no tumors were missed as a result of ureteral nonopacification; secondary signs were present in all cases in which tumor existed in a ureteral segment that was nonopacified at CT urography. (Source: Continuous Publishing articles)
Source: Continuous Publishing articles - August 1, 2012 Category: Radiology Authors: Hack, K., Pinto, P. A., Gollub, M. J. Tags: Genitourinary Radiology Genitourinary Imaging Source Type: research

Is the gravity effect of radiographic anatomic features enough to justify stone clearance or fragments retention following extracorporeal shock wave lithotripsy (SWL).
Abstract We determined whether the gravity effect of radiographic anatomic features on the preoperative urography (IVP) are enough to predict fragments clearance after shock wave lithotripsy (SWL). A Total of 282 patients with mean age 45.8 ± 13.2 years (189 male, 93 female), who underwent SWL due to renal calculi between October 2005 and August 2009 were enrolled. The mean calculi load was 155.72 ± 127.66 mm². The patients were stratified into three groups: patients with pelvis calculi (group 1); patients with upper or middle pole calculi (group 2) and patients with lower pole calculi (group 3). Three ang...
Source: Urological Research - July 28, 2012 Category: Urology & Nephrology Authors: Mustafa M Tags: Urol Res Source Type: research