Magnetic resonance urography (MRU) is a radiation-free exam that uses magnetic waves to create detailed pictures of the kidneys, ureters and bladder. It is a radiation-free way to look at the structure and function of the urinary tract, which is the part of the body that produces and transports urine.

2019年6月1日 · MRU provides the ability to simultaneously image the kidneys and urinary bladder with improved soft tissue resolution, better tissue characterization and when combined with assessment of the upper tract, a comprehensive examination of the urinary system.

2016年10月24日 · CE-MRU images are obtained with fat-suppressed 3D GE T1W sequences (THRIVE, VIBE, LAVA, etc.) after the administration of intravenous contrast agent. The recommended acquisition plan is coronal with a wide FOV in order to allow the study of the entire urinary tract in one acquisition.

Magnetic resonance urography (MRU) is a costly, time-consuming and expertise-demanding imaging modality. Additionally, it has also been reported to suffer from other limitations i.e. lower spatial resolution, an inability to directly visualize calcifications and a susceptibility to a wide range of artefacts [3, 4].

MRU provides the ability to simultaneously image the kidneys and urinary bladder with improved soft tissue resolution, better tissue characterization and when combined with assessment of the upper tract, a comprehensive examination of the urinary system.

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2022年9月23日 · Magnetic resonance urography requires patient preparation in the form of pre-examination intravenous hydration, placement of a urinary catheter, and the administration of diuretics at the time of the exam. The imaging protocol is based on T2-weighted images for anatomical assessment and dynamic post-contrast images for functional evaluation.

Magnetic resonance urography (MRU) can be performed on the basis of two different imaging strategies: static-fluid MRU, based on heavily T2 weighted turbo spin echo (TSE) sequences, and gadolinium-enhanced excretory MRU. Both MR urographic techniques in combination with standard MRI permit a compreh …

2007年3月2日 · Two imaging strategies have been developed for MRU: nonenhanced MRU, which is performed using heavily T2-weighted (T2-W) sequences; and contrast-enhanced MRU (CE-MRU), which is performed with fast T1-weighted (T1-W) pulse sequences following intravenous gadolinium administration (1-14).

Excretory MRU images were acquired five minutes after the administration of 0.1 mmol/kg gadolinium and were independently reviewed by two radiologists, who were blinded to the MRU technique. Readers evaluated the calyces, renal pelvis, and ureters qualitatively for degree of opacification, distention, and artifacts on a four-point scale.