title: Coronary artery imaging: 3D segmented k-space data acquisition with multiple breath-holds and real-time slab following.
abstract: The purpose of this work was to develop a multiple-breath-hold (BH) imaging method for coronary arteries in which a segment of k-space is acquired in each BH. The goal was to increase the resolution, or the signal-to-noise ratio (SNR) and coverage, of three-dimensional-(3D)-BH volume-targeted scanning (VCATS). To correct for slab position differences, a real-time slab following technique using navigator echoes for motion detection was used. Sixteen normal volunteers were imaged to compare the method with a single-BH scan. Results showed that higher resolution, or larger coverage and higher SNR, were achieved by the multiple-BH method without respiratory motion artifacts. In conclusion, 3D segmented k-space data acquisition with multiple-BHs and real-time slab following is a promising approach for extending the capabilities of VCATS further.
authors.affiliation: Department of Radiology, Northwestern University, Chicago, Illinois 60611, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Shea
authors.forename: R M
authors.initials: RM
authors.lastname: Kroeker
authors.forename: V
authors.initials: V
authors.lastname: Deshpande
authors.forename: G
authors.initials: G
authors.lastname: Laub
authors.forename: J
authors.initials: J
authors.lastname: Zheng
authors.forename: J P
authors.initials: JP
authors.lastname: Finn
authors.forename: D
authors.initials: D
authors.lastname: Li
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis; D003331:Coronary Vessels / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012016:Reference Values