TY - JOUR
T1 - An electron-beam CT approach for transvenous coronary arteriography
AU - Thomas, P. J.
AU - McCollough, C. H.
AU - Ritman, E. L.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1995
Y1 - 1995
N2 - Objective: The goal is to image the 3D anatomy of the major coronary arteries within a single breath-hold and using a single intravenous injection of contrast agent. Materials and Methods: With use of an electron-beam CT (EBCT) scanner, operated in its multislice scan mode (using all four target rings, each scanning two nominal 8 mm thick slices in a total time interval of 224 ms), a radiologically realistic thorax phantom containing a heart with coronary arteries (opacified with 40 mg iodine/ml) was scanned six times with the patient table advanced by a 2 mm step into the scanner between each scan. The normalized and scaled sinogram data were transferred to an off-line computer and reconstructed using our own implementation of a 3D algebraic reconstruction technique that takes into account the exact 3D relationship of the X-ray source and detector elements of the EBCT. Results: A single volume image consisting of 40 slices, at 2 mm intervals and each uniformly 3.7 mm thick, depicted the lumina of the coronary arteries with greater anatomic detail than the 'original' images at 8 mm, primarily because of the reduced partial volume effect. Conclusion: Our preliminary results suggest that EBCT, operated in multislice scan mode, may be useful for transvenous coronary angiography performed within a single breath-hold.
AB - Objective: The goal is to image the 3D anatomy of the major coronary arteries within a single breath-hold and using a single intravenous injection of contrast agent. Materials and Methods: With use of an electron-beam CT (EBCT) scanner, operated in its multislice scan mode (using all four target rings, each scanning two nominal 8 mm thick slices in a total time interval of 224 ms), a radiologically realistic thorax phantom containing a heart with coronary arteries (opacified with 40 mg iodine/ml) was scanned six times with the patient table advanced by a 2 mm step into the scanner between each scan. The normalized and scaled sinogram data were transferred to an off-line computer and reconstructed using our own implementation of a 3D algebraic reconstruction technique that takes into account the exact 3D relationship of the X-ray source and detector elements of the EBCT. Results: A single volume image consisting of 40 slices, at 2 mm intervals and each uniformly 3.7 mm thick, depicted the lumina of the coronary arteries with greater anatomic detail than the 'original' images at 8 mm, primarily because of the reduced partial volume effect. Conclusion: Our preliminary results suggest that EBCT, operated in multislice scan mode, may be useful for transvenous coronary angiography performed within a single breath-hold.
KW - Angiography
KW - Computed tomography, techniques
KW - Computed tomography, three-dimensional
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U2 - 10.1097/00004728-199505000-00009
DO - 10.1097/00004728-199505000-00009
M3 - Article
C2 - 7790547
AN - SCOPUS:0029069198
SN - 0363-8715
VL - 19
SP - 383
EP - 389
JO - Journal of computer assisted tomography
JF - Journal of computer assisted tomography
IS - 3
ER -