Gadolinium-enhanced three-dimensional MR angiography before endovascular treatment of aneurysms in the abdominal aorta, iliac and peripheral vessels

Citation
J. Biederer et al., Gadolinium-enhanced three-dimensional MR angiography before endovascular treatment of aneurysms in the abdominal aorta, iliac and peripheral vessels, ROFO-F RONT, 172(12), 2000, pp. 985-991
Citations number
32
Language
TEDESCO
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
ISSN journal
1438-9029 → ACNP
Volume
172
Issue
12
Year of publication
2000
Pages
985 - 991
Database
ISI
SICI code
1438-9029(200012)172:12<985:GTMABE>2.0.ZU;2-1
Abstract
Purpose: The value of DSA for the measurement of aortic and peripheral arte rial aneurysm dimensions before endovascular treatment is limited by projec tion effects. It was evaluated if additional gadolinium-enhanced three-dime nsional MR angiography (3D-CEMRA) could compensate for the disadvantages of D5A. Materials and Methods: 21 patients with 35 aneurysms in the abdominal aorta (14), iliac (9) and femoropopliteal vessels (12) were assessed with DSA (7 with calibrated catheter, 14 with yardstick) and 3D-CEMRA (TR/TE 7.8 /2.1 ms, flip-angle 40 degrees, Matrix 512 x 224, FOV 500 mm, eff. slice 1. 8 mm). We measured and compared aneurysm dimensions on both modalities. 3D- CEMRA was regarded as the reference method to evaluate the dimension of DSA -projection effects. Results: Diameter and length of aneurysms were underes timated on DSA with the yardstick as reference. The deviation ranged from 1 5% (+/-5%) in the aorta to 21% (+/-10%) in the iliac vessels. Only with cal ibrated catheters as reference (7/21 DSA), were the distances on DSA correl ated well with MRA. In 2/35 aneurysms 3D-CEMRA detected thrombosis with a d ifference between length of inner lumen dilatation on DSA and whole aneurys m length. 2/5 accessory renal arteries found on DSA were not detected on 3D -CEMRA. Conclusions: 3D-CEMRA is a valuable adjunct to DSA for pre-interven tional diagnostics of aortic and peripheral arterial aneurysms. It provides exact evaluation of aneurysm dimensions and information about partial thro mbosis.