Display of three-dimensional MRA images in which arteries can be

Details Display of three-dimensional MRA images in which arteries can be Display of three-dimensional MRA images in which arteries can be

1997-09-25

2000-06-06

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

324307, 324309, A61B 5055

Patent

active

060730420

ABSTRACT:
An intravascular MR contrast agent is administered to a living patient. A series of three-dimensional dynamic MR datasets is acquired from the Volume of Interest ("VOI"), beginning after administration of the contrast agent and continuing for a sufficiently long time as to reflect contrast agent enhancement of all arterial and venous blood vessels within the VOI. A three-dimensional MR angiogram of the VOI is acquired after the contrast agent has reached equilibrium. For each voxel within the VOI, enhancement of that voxel as a function of time post administration of the contrast agent is computed. Parameters that distinguish enhancement of voxels relating to the patient's arteries from enhancement of voxels relating to the patient's veins are selected, and the intensity of each voxel in the MR angiogram is scaled in accordance with the selected parameters. A maximum intensity projection reconstruction of the VOI is generated from the MR angiogram in which voxel intensity has been scaled.

REFERENCES:
patent: 5792056 (1998-08-01), Prince
patent: 5799649 (1998-09-01), Prince
patent: 5924987 (1999-07-01), Meaney et al.
patent: 5928148 (1999-07-01), Wang et al.

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