Method for reducing artifacts in magnetic resonance images...

Details Method for reducing artifacts in magnetic resonance images... Method for reducing artifacts in magnetic resonance images...

2005-02-18

2008-10-14

Winakur, Eric F (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

Reexamination Certificate

active

07437188

ABSTRACT:
MRA data is acquired from a large, longitudinal region of interest by translating the patient through the more limited longitudinal FOV of the MRI system as a three-dimensional MRA data set are acquired. Patient table movement is controlled to track a bolus of contrast agent as it passes through the region of interest. A seamless image of the entire region of interest is reconstructed after correcting the phase of acquired MRA data to reduce the signal falloff at abutting longitudinal FOVs. Phase corrections are determined from the central DC views acquired during the scan.

REFERENCES:
patent: 5912557 (1999-06-01), Wilman et al.
patent: 6184682 (2001-02-01), Ehman et al.
patent: 6671536 (2003-12-01), Mistretta
patent: 2002/0173715 (2002-11-01), Kruger et al.
David G. Kruger et al., Continuously Moving Table Data Acquisition Method For Long FOV Contrast-Enhanced MRA and Whole-Body MRI, Mag. Reson. in Med,. 47:2240231 (2002).

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