5/2/2007

Heart scanners made by General Electric Co., Siemens AG, Philips Electronics NV, and Toshiba Corp. are gaining in popularity as a means to rule out coronary artery disease. A study of 203 low-risk patients with acute chest pain determined that the CT coronary angiography could "definitely" determine the presence or absences of coronary disease as the cause of chest pain in 75% of cases, but it can't determine how clinically significance blockages or lesions are. "The appropriate role for CT is [for] that person who is not clear cut," said an associate professor of radiologic physics at the Mayo Clinic, who did not participate in the study.

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