MR digital subtraction angiography with three-dimensional data acquisition in the diagnosis of brain tumors: preliminary experience.
MR digital subtraction angiography (DSA) visualizes intracranial vasculature using a rapid T1-weighted sequence and a bolus injection of gadolinium. Although two-dimensional sequences are most frequently used, we applied a three-dimensional technique in combination with a fast method of k-space filling to improve both the temporal and spatial resolutions. In this preliminary study, we assessed the feasibility of using this technique for the diagnosis of brain tumors in 21 patients by reviewing the obtained images and, in 10 patients, comparing the images with conventional angiograms. MR DSA visualized a tumor stain in 11 patients, a tumor mass effect in 9, and tumor-related vessels in 5. In 9 of the 10 patients for whom conventional angiograms were available, the two kinds of angiograms corresponded well. Three-dimensional MR DSA using our technique is a useful adjunct to conventional MR imaging for the visualization of tumor hemodynamics and, in some cases, tumor-related vessels and mass effects.
Department of Radiology, Kyorin University School of Medicine, Shinkawa, Mitaka, Tokyo, Japan. tsuchiyak-kyr@umin.ac.jp
Kazuhiro
K
Tsuchiya
Chinatsu
C
Aoki
Shichiro
S
Katase
Junichi
J
Hachiya
D000293:Adolescent; D000328:Adult; D000368:Aged; D001921:Brain / Q000473:pathology; D001932:Brain Neoplasms / Q000098:blood supply / Q000175:diagnosis*; D002536:Cerebral Arteries / Q000033:anatomy & histology; D002550:Cerebral Veins / Q000033:anatomy & histology; D002560:Cerebrovascular Circulation; D003287:Contrast Media; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000379:methods; D008297:Male; D008875:Middle Aged; D013382:Subtraction Technique
D003287:Contrast Media