Comparison of the myocardial distributions of 201Tl and 99Tcm-MIBI on SPECT images

Purpose: To determine the feasibility of time-resolved dynamic contrast-enhanced magnetic resonance urography (MRU) for the evaluation of ureteral peristalsis using a data-sharing 3D gradient echo sequence with spiral k-space filling. Materials and Methods:Eight patients (M ϭ 3, F ϭ 5, mean 48.1 years) were referred for MRU for the evaluation for renal mass (n ϭ 3), hematuria (n ϭ 2), urinary tract tuberculosis (n ϭ 1), postoperative bladder cancer (n ϭ 1), and postoperative ureteric reimplantation (n ϭ 1). Dynamic MRU was performed for 120 seconds at 1.5T after intravenous furosemide and gadolinium administration using an oblique sagittal, time-resolved T1 3D gradient echo sequence with 1 second effective temporal resolution. Study quality was assessed based on artifacts and extent of ureteric visualization. Frequency of peristalsis from the renal pelvis to urinary bladder was evaluated for each subject.Results: A total of 16 ureters were examined. Image quality was good in four ureters, satisfactory in 11 ureters, and poor in one ureter. Mean peristaltic frequency was 3.5 waves per minute (range, 2.5-6.5 waves/minute) in normal ureters (n ϭ11). Five ureters were considered abnormal (one urinary tract tuberculosis and four postsurgical ureters), and all had decreased or no peristalsis (0 -1.5 waves per minute).Conclusion: MRU using a time-resolved, data-sharing 3D contrast-enhanced technique is able to demonstrate ureteral peristalsis and permits quantification of ureteral peristaltic frequency.

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Time‐resolved dynamic contrast‐enhanced MR urography for the evaluation of ureteral peristalsis: Initial experience

Kim

Jacob

Kim

et al. 2008

Magnetic Resonance Imaging

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Dipyridamole technetium 99m sestamibi myocardial tomography as an independent predictor of cardiac event-free survival after acute ischemic events

Miller

Stratmann

Shaw

et al. 1994

Journal of Nuclear Cardiology

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Single- vs. dual-head SPECT for detection of myocardial ischemia and viability in a large study population

et al. 2007

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Comparison of the myocardial distributions of 201Tl and 99Tcm-MIBI on SPECT images

Cited by 5 publications

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Time‐resolved dynamic contrast‐enhanced MR urography for the evaluation of ureteral peristalsis: Initial experience

Time‐resolved dynamic contrast‐enhanced MR urography for the evaluation of ureteral peristalsis: Initial experience

Dipyridamole technetium 99m sestamibi myocardial tomography as an independent predictor of cardiac event-free survival after acute ischemic events

Single- vs. dual-head SPECT for detection of myocardial ischemia and viability in a large study population

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