scholarly journals Split-bolus MR urography: synchronous visualization of obstructing vessels and collecting system in children

2015 ◽  
Vol 21 (6) ◽  
pp. 498-502 ◽  
Author(s):  
Bilal Battal ◽  
Murat Kocaoglu ◽  
Veysel Akgun ◽  
Selami Ince ◽  
Faysal Gok ◽  
...  
Keyword(s):  
Mr Urography ◽  
Collecting System

MR imaging of renal collecting system with gadoxetate disodium: Feasibility for MR urography

2013 ◽  
Vol 38 (4) ◽  
pp. 816-823 ◽  
Author(s):  
R. Joshua Dym ◽  
Victoria Chernyak ◽  
Alla M. Rozenblit
Keyword(s):  
Mr Imaging ◽  
Gadoxetate Disodium ◽  
Mr Urography ◽  
Collecting System

Functional and Morphologic Evaluation of Congenital Urinary Tract Dilatation by Using Combined Static-Dynamic MR Urography: Findings in Kidneys with a Single Collecting System

Radiology ◽  
2002 ◽  
Vol 224 (3) ◽  
pp. 683-694 ◽  
Author(s):  
Wiltrud K. Rohrschneider ◽  
Sabine Haufe ◽  
Manfred Wiesel ◽  
Burkhard Tönshoff ◽  
Rainer Wunsch ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Mr Urography ◽  
Urinary Tract Dilatation ◽  
Dynamic Mr ◽  
Collecting System

scholarly journals FUNCTIONAL MR UROGRAPHY - PRINCIPLES AND APPLICATIONS IN CONGENITAL OBSTRUCTIVE UROPATHIES

2019 ◽  
Vol 2 (1) ◽  
pp. 8-16
Author(s):  
R G Nicolaescu ◽  
R Capșa ◽  
T Enache ◽  
Ioana Gabriela Lupescu ◽  
I Gherghina
Keyword(s):  
Phase Contrast ◽  
Renal Scintigraphy ◽  
Phase Contrast Imaging ◽  
Urinary Flow ◽  
Resonance Imaging ◽  
Mr Urography ◽  
Contrast Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Collecting System ◽  
System Phase

Congenital obstructive Uropathies are a leading cause of Chronic Kidney Disease in children.  The gold-standard for renal functional imaging is Diuretic Renal Scintigraphy. Different alternatives to Renal Scintigraphy have been suggested, many of them based on Magnetic Resonance Imaging (MRI). The accurate morphologic details of MRI with its more specific application - MR-Urography are well known. The prospect of adding functional information is very attractive, as it will make the MRU a comprehensive “all in one” examination for obstructive uropathies. We chose to investigate DCE MR urography and DTI as tools for the evaluation of congenital obstructive uropathies. Also, we suggest a different technique that describes the urinary flow in the collecting system – phase contrast imaging of the urinary flow in the renal pelvis. Therefore we performed three different studies, all with different sets of patients.

1175: Retrograde Renal Cooling During Laparoscopic RFA to Protect Renal Collecting System

2005 ◽  
Vol 173 (4S) ◽  
pp. 319-319
Author(s):  
Vitaly Margulis ◽  
Edward D. Matsumoto ◽  
Stephanie Shaffer ◽  
Jeffrey A. Cadeddu
Keyword(s):  
Collecting System

1712: Predictive Value of 3D Volume Rendered CT for Collecting System Entry Prior to Nephron Sparing Surgery

2005 ◽  
Vol 173 (4S) ◽  
pp. 464-464
Author(s):  
Ithaar H. Derweesh ◽  
Gaspar A. Motta-Ramirez ◽  
Mahesh Gael ◽  
Nancy Obuchowski ◽  
Hazem A. Moneim ◽  
...  
Keyword(s):  
Predictive Value ◽  
Nephron Sparing Surgery ◽  
Nephron Sparing ◽  
3D Volume ◽  
Collecting System

1903: Long-Term Recurrence Rate After ESWL of Isolated Lower Calyx Stones in Relation to the Collecting System Anatomy

2004 ◽  
Vol 171 (4S) ◽  
pp. 503-503
Author(s):  
Roger M. Mueller ◽  
Bernard Descoeudres ◽  
Werner W. Hochreiter ◽  
Urs E. Studer ◽  
Hansjoerg Danuser
Keyword(s):  
Recurrence Rate ◽  
Collecting System ◽  
Long Term Recurrence Rate

Measurement of Renal Parenchymal Transit Time of 99mTc-MAG3 Using Factor Analysis

1990 ◽  
Vol 29 (04) ◽  
pp. 170-176 ◽  
Author(s):  
M. V. Yester ◽  
Eva Dubovsky ◽  
C. D. Russell
Keyword(s):  
Factor Analysis ◽  
Transit Time ◽  
Region Of Interest ◽  
Initial Slope ◽  
Cortical Region ◽  
Time Activity ◽  
Appearance Time ◽  
Activity Curve ◽  
System Factor ◽  
Collecting System

Renal parenchymal transit time of the recently introduced radiopharmaceutical 99mTc-MAG3 (mercaptoacetylglycylglylcylglycinel) was measured in 37 kidneys, using factor analysis to separate parenchymal activity from that in the collecting system. A new factor algorithm was employed, based on prior interpolative background subtraction and use of the fact that the initial slope of the collecting system factor time-activity curve must be zero. The only operator intervention required was selection of a rectangular region enclosing the kidney (by identifying two points at opposite corners). Transit time was calculated from the factor time-activity curves both by deconvolution of the parenchymal factor curve and also by measuring the appearance time for collecting system activity from the collecting system factor curve. There was substantial agreement between the two methods. Factor analysis led to a narrower range of normal values than a conventional cortical region-of-interest method, presumably by decreasing crosstalk from the collecting system. In preliminary trials, the parenchymal transit time did not well separate four obstructed from seventeen unobstructed kidneys, but it successfully (p <0.05) separated six transplanted kidneys with acute rejection or acute tubular necrosis from 10 normal transplants.

Gadolinium-enhanced Excretory MR Urography: Comparison with MR Urography Using HASTE Technique

2000 ◽  
Vol 42 (1) ◽  
pp. 137
Author(s):  
Gong Yong Jin ◽  
Jeong Min Lee ◽  
Young Min Han ◽  
Gyung Ho Cheong ◽  
Hee Sul Oh ◽  
...  
Keyword(s):  
Mr Urography
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