Patent ID: 9226666
Filing Date: 2016-01-05
CPC Classification: A61B,G01N,G02B

Claim Text:
1. A method for determining a ratio of hemoglobin absorption within a biological tissue using a handheld device, said method comprising: focusing at least one first light pulse comprising a first excitation wavelength into the predetermined area; detecting a first fluorescence signal emitted by at least one fluorophore within the predetermined area in response to the at least one first light pulse; detecting a first photoacoustic signal emitted by hemoglobin within the predetermined area in response to the at least one first light pulse; focusing at least one second light pulse comprising a second excitation wavelength into the predetermined area; detecting a second fluorescence signal emitted by the at least one fluorophore within the predetermined area in response to the at least one second light pulse; detecting a second photoacoustic signal emitted by the hemoglobin within the predetermined area in response to the at least one second light pulse; and determining the ratio of hemoglobin absorption based at least partially on the first and second fluorescence signals and the first and second photoacoustic signals.