Real-time catheter-directed MRA with effective background suppression and persistent rendering.

ABSTRACT:

Purpose

To develop an imaging and visualization technique for real-time magnetic resonance angiography (rtMRA) fully integrated with a real-time interactive imaging environment on a clinical MR scanner.

Materials and methods

Intraarterial injections of contrast agent and imaging processing techniques were employed for rapid catheter-directed assessment of vessel patency and regional tissue perfusion. Operators can image multiple thin slices to maximize anatomic detail or use thick slice or projection imaging to maximize vessel coverage. Techniques in both pulse sequence and image processing were employed to ensure background suppression. Accumulation of maximum pixel values allows persistent display of bolus signal as it passes through the vessels and into tissues. Automatic

SUBMITTER: Guttman MA 

PROVIDER: S-EPMC2638003 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature