Quantitative Evaluation of Acute Renal Transplant Dysfunction with Low-Dose Three-dimensional MR Renography

A Comparison of Low-Dose and Normal-Dose Gadobutrol in MR Renography and Renal Angiography

OBJECTIVE It has been advocated that a reduced injection volume with highly concentrated (1 M) contrast material can produce a sharper bolus peak and an increased intravascular first-pass gadolinium concentration when compared with the use of a lower concentration (0.5 M). A higher concentration would also cause a reduction in dose. The purpose of our study was to test the use of a low dose (0....

Dynamic three-dimensional MR renography for the measurement of single kidney function: initial experience.

A three-dimensional magnetic resonance (MR) renographic method to measure single kidney glomerular filtration rate (GFR) and split renal function was developed that is based on renal signal intensity measurements during 2-3 minutes after intravenous injection of a low dose (2 mL or 0.01 mmol/kg) of gadopentetate dimeglumine. In nine subjects, single kidney MR GFR indices correlated well with te...

An Iterative Framework for Registration and Segmentation of Dynamic Three-Dimensional MR Renography

Dynamic MR renography has broad clinical applications, but suffers from respiratory motion that limits analysis and interpretation. Since each examination yields at least 10-20 serial 3D images of the abdomen, manual registration is prohibitively labor-intensive [1]. An effective framework for registration and segmentation is necessary to analyze these data sets. Our purpose was to develop and ...

Renal Transplant Dysfunction

Evaluation of exercise-induced acute renal failure in renal hypouricemia using Tc-99m DTPA renography.

We present a case of a thirty-eight-year-old man who had exercise-induced acute renal failure (exercise-induced ARF). He experienced oliguria, general fatigue, and vague discomfort in the lower abdomen after he exercised. As he had suffered from hypouricemia before, he was diagnosed as having exercise-induced ARF associated with hypouricemia. Enhanced computed tomography (CT) images showed patc...