A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
326/13, 358/11.1
A61B 5/05 (2006.01) A61B 5/02 (2006.01) A61B 6/00 (2006.01) A61B 6/03 (2006.01) G06T 11/00 (2006.01)
Patent
CA 1101936
CARDIAC IMAGING WITH CT SCANNER Abstract of the Disclosure The patient's ECG signal is employed in a traverse- and-rotate type CT scanner as a time base for triggering the beginning of a traverse such that the traveling beam reaches the heart at a desired phase of the cardiac cycle. For a purely-rotational-type CT scanner, continuously generated scan data is only stored for corresponding phases of successive cardiac cycles. Alternatively, gating of the beams themselves can be controlled by the ECG signal. The use of a pacemaker to stabilize the cardiac period is described along with a system for recognizing unacceptable variations in the cardiac period. In a traverse-and-rotate-type fan-beam CT scanner, the effective beam width is narrowed to hasten the traverse of the heart.
298633
Cool Steven L.
Hunt Willard F.
Richey Joseph B.
Wake Robert H.
Walters Ronald G.
Macrae & Co.
Ohio-Nuclear Inc.
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