Measurement of crater geometries after laser ablation of bone tissue with optical coherence tomograp

来源 :Chinese Optics Letters | 被引量 : 0次 | 上传用户:jklgfdjligjregjmreji
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The feasibility of measuring crater geometries by use of optical coherence tomography(OCT)is examined. Bovine shank bone on a motorized translation stage with a motion velocity of 3 mm/s is ablated with a pulsed CO_2 laser in vitro.The laser pulse repetition rate is 60 Hz and the spot size on the tissue surface is 0.5 mm.Crater geometries are evaluated immediately by both OCT and histology methods after laser irradiation.The results reveal that OCT is capable of measuring crater geometries rapidly and noninvasively as compared to histology.There are good correlation and agreement between crater depth estimates obtained by two techniques,whereas there exists distinct difference between crater width estimates when the carbonization at the sides of craters is not removed. The feasibility of measuring crater geometries by use of optical coherence tomography (OCT) is examined. Bovine shank bone on a motorized translation stage with a motion velocity of 3 mm / s is ablated with a pulsed CO_2 laser in vitro. The laser pulse repetition rate is 60 Hz and the spot size on the tissue surface is 0.5 mm. Crater geometries are evaluated immediately by both OCT and histology methods after laser irradiation. The results reveal that OCT is capable of measuring crater geometries rapidly and noninvasively as compared to histology. Here are good correlation and agreement between crater depth estimates obtained by two techniques, there there exists distinct difference between crater width estimates when the carbonization at the sides of craters is not removed.
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