Indocyanine Green Tissue Perfusion Monitoring

Indocyanine green dye (ICG) will be injected intravenously as a sterile solution at a dose of 0.5 mg/kg, and then imaging of skin will be done with a fluorescence camera. The ICG-angiogram sequence will consist of 1.5 x 2.0-cm field-of-view ICG fluorescence images acquired at the rate of approximately 30/sec during a period of about 15 seconds. Following acquisition of the initial transit angiogram sequence, several additional 15-second-long image sequences will be acquired during the next half-hour, but without any additional injections.