CPC A61B 1/043 (2013.01) [A61B 1/000095 (2022.02); A61B 1/063 (2013.01); A61B 1/0638 (2013.01); A61B 1/0646 (2013.01); A61B 1/0655 (2022.02); A61B 5/0033 (2013.01); A61B 5/0071 (2013.01); A61B 5/7425 (2013.01); G01N 21/6456 (2013.01); G02B 23/2469 (2013.01); G02B 27/141 (2013.01); A61B 2562/0233 (2013.01)] | 28 Claims |
1. A system comprising:
an emitter for emitting pulses of electromagnetic radiation, wherein the emitter comprises a first emitter for emitting pulses of a first wavelength of electromagnetic radiation and a second emitter for emitting pulses of a second wavelength of electromagnetic radiation;
an image sensor comprising a pixel array for sensing reflected electromagnetic radiation; and
a controller in electronic communication with the emitter and the image sensor;
wherein the image sensor is configured to generate a plurality of exposure frames, wherein each of the plurality of exposure frames corresponds to one or more pulses of electromagnetic radiation emitted by the emitter;
wherein the emitter actively pulses electromagnetic radiation during a blanking period of the image sensor when active pixels of the pixel array are not being read; and
wherein at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a fluorescence excitation pulse;
wherein at least a portion of the plurality of exposure frames comprises a fluorescence exposure frame corresponding to the fluorescence excitation pulse;
wherein the controller instructs the emitter to vary a duration, or a magnitude, or the duration and the magnitude of the fluorescence excitation pulse at a constant display frame rate to vary an amount of electromagnetic radiation received by the pixel array to control resolution of the fluorescence exposure frame.
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