Time-resolved projection MRA: clinical application in intracranial vascular malformations

被引:50
作者
Klisch, J
Strecker, R
Henning, J
Schumacher, M
机构
[1] Univ Freiburg, Dept Radiol, Neuroradiol Sect, D-79106 Freiburg, Germany
[2] Univ Freiburg, Dept Radiol, Sect Med Phys, D-79106 Freiburg, Germany
关键词
magnetic resonance; angiography; time resolved; malformations; vascular; embolisation;
D O I
10.1007/s002340050024
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
We report preliminary results of imaging intracranial vascular malformations with time-resolved projection MRA after a bolus injection of contrast median before and after endovascular treatment. Projection angiograms are acquired with a slice-selective snapshot FLASH sequence with a time resolution of two images per second, 40-60 images being acquired consecutively after bolus injection of 15 ml Gd-DTPA. Postprocessing of images in 2D projection MRA by correlation analysis offers several advantages with significant improvement of signal-to-noise, leading to adequate anatomical resolution. Subsecond projection MRA is a reliable technique for imaging intracranial vessels and gives information about the haemodynamics of vascular malformations.
引用
收藏
页码:104 / 107
页数:4
相关论文
共 4 条
[1]   PROCESSING STRATEGIES FOR TIME-COURSE DATA SETS IN FUNCTIONAL MRI OF THE HUMAN BRAIN [J].
BANDETTINI, PA ;
JESMANOWICZ, A ;
WONG, EC ;
HYDE, JS .
MAGNETIC RESONANCE IN MEDICINE, 1993, 30 (02) :161-173
[2]   Time-resolved projection angiography after bolus injection of contrast agent [J].
Hennig, J ;
Scheffler, K ;
Laubenberger, J ;
Strecker, R .
MAGNETIC RESONANCE IN MEDICINE, 1997, 37 (03) :341-345
[3]   Time-resolved contrast-enhanced 3D MR angiography [J].
Korosec, FR ;
Frayne, R ;
Grist, TM ;
Mistretta, CA .
MAGNETIC RESONANCE IN MEDICINE, 1996, 36 (03) :345-351
[4]   Dynamic MR digital subtraction angiography using contrast enhancement, fast data acquisition, and complex subtraction [J].
Wang, Y ;
Johnston, DL ;
Breen, JF ;
Huston, J ;
Jack, CR ;
Julsrud, PR ;
Kiely, MJ ;
King, BF ;
Riederer, SL ;
Ehman, RL .
MAGNETIC RESONANCE IN MEDICINE, 1996, 36 (04) :551-556