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Heat‐resistant cylindrical diffuser for interstitial laser coagulation: Comparison with the bare‐tip fiber in a porcine liver model

Interstitial laser coagulation is an experimental treatment to eliminate solid tumors such as hepatic metastases. The pattern of light emission from the fiber tip is probably an important factor in determining the size and shape of a lesion. A heat‐resistant cylindrical light diffusing tip of 2 cm length was developed for this application. We performed an in vitro study to compare this diffusing‐tip with a bare‐tip fiber.