title: Dynamic contrast-enhanced subtraction MR angiography in intracranial vascular abnormalities.
abstract: We present our clinical experience with dynamic contrast-enhanced MR angiography (MRA) with subtraction for assessing intracranial vascular abnormalities. Ten patients with various cerebrovascular disorders underwent dynamic contrast-enhanced MRA on a 1.0-T system. Thirty sections (2 mm) were acquired in 29-30 s. Maximum intensity projection images and subtracted source images were compared with those obtained by conventional angiography. In all cases, the presence or absence of abnormalities in the targeted vessels, as well as the morphology of the sagittal sinuses, was clearly visualized as in conventional angiography, without any obstructions such as hyperintense hematomas or thrombi, or intraluminal turbulence. Although the temporal and spatial resolutions with current hardware are insufficient, these preliminary results suggest that dynamic contrast-enhanced MRA with subtraction may be useful for assessing vascular lesions with hemorrhage or thrombus, and the dural sinuses.
authors.affiliation: Department of Radiology, Fukuoka University Chikushi Hospital, 377-1 Oaza Zokumyoin, Chikushino 818-8502, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Takano
authors.forename: H
authors.initials: H
authors.lastname: Utsunomiya
authors.forename: H
authors.initials: H
authors.lastname: Ono
authors.forename: M
authors.initials: M
authors.lastname: Okazaki
authors.forename: A
authors.initials: A
authors.lastname: Tanaka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001783:Blood Flow Velocity; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media / Q000008:administration & dosage*; D003937:Diagnosis, Differential; D005260:Female; D006406:Hematoma / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D007089:Image Enhancement; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000503:physiopathology; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis* / Q000503:physiopathology; D020299:Intracranial Hemorrhage, Hypertensive / Q000175:diagnosis / Q000503:physiopathology; D020767:Intracranial Thrombosis / Q000175:diagnosis / Q000503:physiopathology; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008577:Meningeal Neoplasms / Q000098:blood supply / Q000175:diagnosis / Q000503:physiopathology; D008579:Meningioma / Q000098:blood supply / Q000175:diagnosis / Q000503:physiopathology; D008875:Middle Aged
chemical_list: D003287:Contrast Media