A study presented at the American Association for Thoracic Surgery (AATS) meeting in San Francisco showed that Toronto-based Novadaq's Spy intraoperative fluorescent imaging system correctly identified 58% more coronary artery bypass grafts with technical problems than transit-time ultrasound flow (TTF) measurement.
Intraoperative graft angiography with the Spy product involves intravascular administration of fluorescent indocyanine green dye and visualization of the graft with dispersed laser light, the Canadian cardiovascular imaging firm said.
The data was collected from a 106-patient randomized clinical trial conducted at Sunnybrook and Women's College Health Sciences Centre in Toronto, according to the firm. In the study, 139 bypass grafts were examined with the Spy system and TTF. The primary end point was to compare the capability of each system to correctly identify grafts with problems, using x-ray angiography as the gold standard, Novadaq said.
By AuntMinnie.com staff writers
April 12, 2005
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