Surgery – Truss – Pad
Patent
1992-04-28
1994-07-19
Pfaffle, K. M.
Surgery
Truss
Pad
1286533, 128696, 324306, A61B 5055
Patent
active
053299256
ABSTRACT:
A positive portion (52) of k-space and a negative portion (56) are both divided into n segments (FIG. 2 ). In each cardiac cycle, a multiplicity of field echoes (106) are generated, which multiplicity of gradient echoes are divided into groups of n contiguous echoes. Within each group, the echoes are all from either the positive portion of k-space or the negative portion of k-space. Preferably, every group of each cardiac cycle has the same views in the same order to generate like, time displaced frames of a cine image sequence. Within each group, the views from the central-most segment n are collected in the middle of the group, views from progressively less central, higher frequency segments are progressively less centrally located within each group with views of the most peripheral, highest frequency segments being collected at the ends of the group. The total number of segments is an integer multiple of four times the number of views per group to facilitate 0.degree.-180.degree. phase cycling. Quantitative flow images are generated by expanding each group to include corresponding views from the k-space for reference image data and a flow sensitized image data. The echo signals for the reference and flow sensitized images for each frame are separated and reconstructed into reference and flow sensitized images for each frame. The reference and flow sensitized images are subtracted to generate a quantitative flow image for each frame.
REFERENCES:
patent: 4570119 (1986-02-01), Wehrli et al.
patent: 4683431 (1987-07-01), Pattany et al.
patent: 4689560 (1987-08-01), Nayler et al.
patent: 4710717 (1987-12-01), Pelc et al.
patent: 4724386 (1988-02-01), Haacke et al.
patent: 4767991 (1988-08-01), Rzedzian
patent: 4885537 (1989-12-01), Suzuki
patent: 4915111 (1990-04-01), Sano et al.
patent: 4968935 (1990-11-01), Ehman et al.
patent: 5031624 (1991-07-01), Mistretta et al.
patent: 5042485 (1991-08-01), Sano et al.
patent: 5151656 (1992-09-01), Maier et al.
patent: 5167232 (1992-12-01), Parker et al.
patent: 5273040 (1993-12-01), Apicella et al.
"Fast Antiography Using Selective Inversion Recovery", Wang, et al., Magnetic Resonance in Medicine, 23, 109-121 (1992).
"Fast MR Cardiac Profiling with Two-Dimensional Selective Pulses" Cline, et al., Magnetic Resonance in Medicine, 17, 390-401 (1991).
"MR Fourier Transform Arteriography Using Spectral Decomposition" Cho, et al., Magnetic Resonance in Medicine, 16, 226-237 (1990).
"Extraction of Cardiac and Respiratory Motion Cycles by Use of Projection Data and Its Applications to NMR Imaging", Kim, et al., Magnetic Resonance in Medicine, 13, 25-37 (1990).
"Cineangiography of the Heart in a Single Breath Hold with a Segmented TubroFLASH Sequence", Atkinson, et al. Radiology 178:357-360; RSNA 1991.
"A Flow Velocity Zeugmatographic Interlace For NMR Imaging in Humans", Moran, Magnetic Resonance Imaging vol. 1, pp. 197-203 (1982).
"Measurement of Flow with NMR Imaging Using a Gradient Pulse and Phase Difference Technique", Bryant, et al. Journal of Computer Assisted Tomography, 8(4):588-593; Aug. 1984.
"Blood Flow: Magnetic Resonance Imaging", Bradley, et al. Radiology 1985 154:443-450.
Pfaffle K. M.
Picker International Inc.
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