Three-dimensional gadolinium-enhanced MR angiography for aortoiliac inflow assessment plus renal artery screening in a single breath hold.
Radiology
; 198(3): 725-32, 1996 Mar.
Article
in En
| MEDLINE
| ID: mdl-8628861
ABSTRACT
PURPOSE:
To develop a magnetic resonance (MR) angiography protocol, with use of breath-hold techniques, for simultaneous aortoiliac inflow assessment and renal artery screening in patients with lower extremity ischemia or aortic aneurysm. MATERIALS ANDMETHODS:
Breath-hold three dimensional gadolinium-enhanced MR angiography was performed in 50 patients (conventional arteriography in 47 was the standard of reference). After multiple strategies were tested in the first 18 patients, a final protocol was formulated and tested in the subsequent 32 patients.RESULTS:
The final protocol comprised a single-slab (28 3-mm-thick partitions) coronal acquisition (repetition time, 7 msec; echo time, 2.8 msec; flip angle, 60 degrees) during a single breath hold, enhanced with 30 mL gadoteridol. In the final 32 patients, sensitivity and specificity, respectively, for obstructive lesions were 100% and 100% for the aorta, 100% and 98% for common iliac arteries, 100% and 89% for external iliac arteries, 100% and 89% for main renal arteries, and 100% and 62% for accessory renal arteries.CONCLUSION:
This breath-hold protocol improves the accuracy of aortoiliac inflow assessment, but low resolution limits evaluation of small renal arteries.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Organometallic Compounds
/
Aorta, Abdominal
/
Renal Artery
/
Image Processing, Computer-Assisted
/
Magnetic Resonance Angiography
/
Heterocyclic Compounds
/
Iliac Artery
Type of study:
Diagnostic_studies
/
Screening_studies
Limits:
Adult
/
Aged
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Radiology
Year:
1996
Document type:
Article
Affiliation country:
United States