TY - GEN
T1 - Explanation of the fiber optic probe method signal by means of the time-resolved photography for laser ablation bubble
AU - Yoshikawa, Miya
AU - Hasegawa, Makoto
AU - Yano, Masato
AU - Nakajima, Akio
AU - Arai, Tsunenori
AU - Kikuchi, Makoto
AU - Obara, Minoru
PY - 1993
Y1 - 1993
N2 - We have developed the fiber optic probe method to monitor the ablation bubbles previously. The backscattered light of the probe laser from the ablation area was monitored through the same fiber of which the Ho:YAG laser pulse was delivered. This method may become available in vivo. We measured the decay time of the backscattered light waveform. The theoretically explanation showed that the calculated bubble collapse time approximately coincided with the decay time of waveform. Since the ablation bubble collapse is strongly affected by mechanical properties of its adjacent tissues, the decay time suggested their surrounding tissue types. We demonstrated the possibility of the tissue characterization by this probe method. In order to know the characteristic of the observed backscattered light to understand our probe method capability for tissue characterization, we performed comparative measurements for the ablation bubble by means of time-resolved photography and the probe method.
AB - We have developed the fiber optic probe method to monitor the ablation bubbles previously. The backscattered light of the probe laser from the ablation area was monitored through the same fiber of which the Ho:YAG laser pulse was delivered. This method may become available in vivo. We measured the decay time of the backscattered light waveform. The theoretically explanation showed that the calculated bubble collapse time approximately coincided with the decay time of waveform. Since the ablation bubble collapse is strongly affected by mechanical properties of its adjacent tissues, the decay time suggested their surrounding tissue types. We demonstrated the possibility of the tissue characterization by this probe method. In order to know the characteristic of the observed backscattered light to understand our probe method capability for tissue characterization, we performed comparative measurements for the ablation bubble by means of time-resolved photography and the probe method.
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M3 - Conference contribution
AN - SCOPUS:0027813609
SN - 0780312635
T3 - Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting
SP - 264
EP - 265
BT - Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting
PB - Publ by IEEE
T2 - Annual Meeting of the IEEE Lasers and Electro-Optics Society
Y2 - 15 November 1993 through 18 November 1993
ER -