We present an image-guided laparoscopic surgical tool (IGLaST) to prevent bleeding.\nBy applying optical frequency domain imaging (OFDI) to a specially designed laparoscopic surgical\ntool, the inside of fatty tissue can be observed before a resection, and the presence and size of blood\nvessels can be recognized. The optical sensing module on the IGLaST head has a diameter of less\nthan 390 �¼m and is moved back and forth by a linear servo actuator in the IGLaST body. We proved\nthe feasibility of IGLaST by in vivo imaging inside the fatty tissue of a porcine model. A blood vessel\nwith a diameter of about 2.2 mm was clearly observed. Our proposed scheme can contribute to safe\nsurgery without bleeding by monitoring vessels inside the tissue and can be further expanded to\ndetect invisible nerves of the laparoscopic thyroid during prostate gland surgery.
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