scholarly journals New grading system for upper urinary tract dilation using magnetic resonance urography in patients with Neurogenic Bladder

BMC Urology ◽  
2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Limin Liao ◽  
Fan Zhang ◽  
Guoqing Chen
Keyword(s):  
Urinary Tract ◽  
Magnetic Resonance ◽  
Neurogenic Bladder ◽  
Upper Urinary Tract ◽  
Grading System ◽  
Magnetic Resonance Urography ◽  
Tract Dilation ◽  
Urinary Tract Dilation

Comparison of static-fluid or excretory magnetic resonance urography with computed tomography urography for visualization of nondilated renal pelvises and ureters in healthy Beagles

2021 ◽  
pp. 1-10
Author(s):  
Sang-Kwon Lee ◽  
Seongjae Hyeong ◽  
Soyeon Kim ◽  
Chang-Yeop Jeon ◽  
Kyung-Seob Lim ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Magnetic Resonance ◽  
Contrast Medium ◽  
Imaging Techniques ◽  
Motion Artifacts ◽  
Ct Urography ◽  
Magnetic Resonance Urography ◽  
Tract Dilation ◽  
Urinary Tract Dilation ◽  
Static Fluid

Abstract OBJECTIVE To assess the usefulness of magnetic resonance urography (MRU) for the visualization of nondilated renal pelvises and ureters in dogs and to compare our findings for MRU versus CT urography (CTU). ANIMALS 9 healthy Beagles. PROCEDURES Dogs underwent CTU, static-fluid MRU, and excretory MRU, with ≥ 7 days between procedures. Contrast medium was administered IV during CTU and excretory MRU, whereas urine in the urinary tract was an intrinsic contrast medium for static-fluid MRU. For each procedure, furosemide (1 mg/kg, IV) was administered, and reconstructed dorsal plane images were acquired 3 minutes (n = 2) and 7 minutes (2) later. Images were scored for visualization of those structures and for image quality, diameters of renal pelvises and ureters were measured, and results were compared across imaging techniques. RESULTS Excretory MRU and CTU allowed good visualization of the renal pelvises and ureters, whereas static-fluid MRU provided lower visualization of the ureters. Distention of the renal pelvises and ureters was good in excretory MRU and CTU. Distention of the ureters in static-fluid MRU was insufficient compared with that in CTU and excretory MRU. Distinct artifacts were not observed in CTU and excretory MRU images. Static-fluid MRU images had several mild motion artifacts. CLINICAL RELEVANCE Our findings indicated that excretory MRU with furosemide administration was useful for visualizing nondilated renal pelvises and ureters of dogs in the present study. When performing MRU for the evaluation of dogs without urinary tract dilation, excretory MRU may be more suitable than static-fluid MRU.

Gadolinium Enhanced Magnetic Resonance Urography for Upper Urinary Tract Malignancy

2010 ◽  
Vol 183 (4) ◽  
pp. 1330-1336 ◽  
Author(s):  
Naoki Takahashi ◽  
James F. Glockner ◽  
Robert P. Hartman ◽  
Bernard F. King ◽  
Bradley C. Leibovich ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Magnetic Resonance ◽  
Upper Urinary Tract ◽  
Magnetic Resonance Urography

Society for Fetal Urology Classification vs Urinary Tract Dilation Grading System for Prognostication in Prenatal Hydronephrosis: A Time to Resolution Analysis

2018 ◽  
Vol 199 (6) ◽  
pp. 1615-1621 ◽  
Author(s):  
Luis H. Braga ◽  
Melissa McGrath ◽  
Forough Farrokhyar ◽  
Kizanee Jegatheeswaran ◽  
Armando J. Lorenzo
Keyword(s):  
Urinary Tract ◽  
Grading System ◽  
Tract Dilation ◽  
Urinary Tract Dilation ◽  
Resolution Analysis ◽  
Prenatal Hydronephrosis

scholarly journals Could Drainage Related Ultrasonography Prevent Unnecessary Interventions in Patients with Wolfram Syndrome?

2020 ◽  
Vol 30 (6) ◽  
Author(s):  
Mehrzad Mehdizadeh ◽  
Sahar Eftekharzadeh ◽  
Sedighe Hosseini Shabanan ◽  
Maryam Sobhani ◽  
Abdol-Mohammad Kajbafzadeh
Keyword(s):  
Retrospective Study ◽  
Urinary Tract ◽  
Diabetes Insipidus ◽  
Wolfram Syndrome ◽  
Upper Urinary Tract ◽  
Cutoff Point ◽  
Maximum Diameter ◽  
Definite Diagnosis ◽  
Tract Dilation ◽  
Urinary Tract Dilation

Background: Upper urinary tract dilation, the most common urological manifestation of the Wolfram syndrome (WS), is mainly non-obstructive and secondary to other components of the disease such as diabetes insipidus. Misdiagnosis of the type of the hydroureter in Wolfram patients and encountering them as obstructive uropathies has led to ineffectual surgeries such as ureter re-implantation. Based on previous studies drainage related ultrasonography (DRUS) is a beneficial means of distinction between obstructive and non-obstructive hydroureters. Objectives: To avoid unnecessary interventions in patients with WS by detecting hydroureters’ types using DRUS. Methods: Seven patients (14 ureters) with a mean ± SD age of 24.43 ± 4.25 months who were diagnosed with WS were included in this retrospective study. The definite diagnosis of the non-obstructive type of hydroureter was assessed by appropriate imaging modalities. The maximum diameter of these 14 ureters, before (D1) and after (D2) 3 hours of catheterization were observed by ultrasonography. Values were recorded as D ratio ( [(|D1 - D2|)/D1] × 100) and the cutoff point of 22% for D ratio was set to discriminate the subtypes of the hydroureter. Results: Measurement of maximum diameter of ureter prior to catheterization indicated a mean ± SD diameter of 20.64 ± 2.73 mm; decreasing to 11.07 ± 2.64 mm after 3 hours of catheterization which indicates a significant decrease. Mean D ratio of 14 hydroureters was 45.95 ± 13.01% which indicated significantly higher percentage than 22%, revealing that hydroureters’ type in WS is non-obstructive. Conclusions: DRUS is a useful method for the assessment of the hydroureter’s type in WS and it could prevent performing unnecessary surgeries in WS patients.

Characterizing upper urinary tract dilation on ultrasound: a survey of North American pediatric radiologists’ practices

2014 ◽  
Vol 45 (5) ◽  
pp. 686-694 ◽  
Author(s):  
David W. Swenson ◽  
Kassa Darge ◽  
Sonja I. Ziniel ◽  
Jeanne S. Chow
Keyword(s):  
Urinary Tract ◽  
North American ◽  
Upper Urinary Tract ◽  
Tract Dilation ◽  
Urinary Tract Dilation

Role of magnetic resonance urography in the diagnosis of noncalcurlar obstruction of the upper urinary tract

2003 ◽  
Vol 2 (1) ◽  
pp. 199
Author(s):  
A. Shokeir ◽  
W. Eassa ◽  
A. Mosbah ◽  
T. Mohsen ◽  
O. Mansour ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Magnetic Resonance ◽  
Upper Urinary Tract ◽  
Magnetic Resonance Urography

scholarly journals Influence of Febrile Urinary Tract Infection on Ultrasonic Measurements of Nonreflux Upper Urinary Tract Dilation in Infants

2021 ◽  
Author(s):  
Peiqiang Li ◽  
Fuyun Liu ◽  
Yan Huang
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Upper Urinary Tract ◽  
Febrile Urinary Tract Infection ◽  
Ureterovesical Junction ◽  
Febrile Uti ◽  
Ultrasonic Measurements ◽  
Tract Dilation ◽  
Urinary Tract Dilation

Abstract Background To investigate the changes in ultrasonic measurements of nonreflux upper urinary tract dilation in infants with febrile urinary tract infection (UTI).Methods There were 28 cases of nonreflux upper urinary tract dilatation with febrile UTI: 14 cases of ureteropelvic junction obstruction (UPJO) (14 kidneys) and 14 cases of ureterovesical junction obstruction (UVJO) (16 kidneys). Changes in anteroposterior renal pelvic diameter (APD) and ureteral dilatation during infection and after infection were compared in UPJO and UVJO patients, respectively.Results In the UPJO with febrile UTI group, the APD was 24.1±10.0 mm at the time of UTI and 16.6±7.0 mm 1 week after infection recovery (P<0.001). In the UVJO with febrile UTI group, the APD was 19.3±8.5 mm at the time of UTI and 15.2±7.7 mm 1 week after infection recovery (P<0.001). In the UVJO with febrile UTI group, the ureteric diameter was 11.0±3.2 mm during UTI and 6.8±2.6 mm 1 week after infection recovery (P<0.001).Conclusions In UPJO patients, the APD decreased after febrile UTI treatment compared with that during infection. In UVJO patients, the APD and ureteric diameter decreased after febrile UTI treatment compared with that during infection.

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