Taylor R S, Higginson L A, Leopold K E
Division of Physics, National Research Council of Canada, Ottawa.
Lasers Surg Med. 1990;10(5):414-9. doi: 10.1002/lsm.1900100503.
A XeCl laser with an optical pulse duration of 35 ns was used to determine the cut depth per laser pulse of postmortem human aorta as a function of laser fluence for four main categories of plaque development. The data indicate that the cut depth per pulse progressively decreases as the degree of calcification increases even at very high (100 mJ/mm2) laser fluences. A comparison was made between the XeCl laser cut rate data obtained using the 35-ns duration laser pulses to data obtained using 200-ns duration pulses for each of the four plaque types. As the degree of tissue calcification increased higher XeCl laser fluences were required for the long pulse case to achieve the same cut depth per pulse as that observed using the shorter pulse duration.
使用脉冲持续时间为35纳秒的氙氯激光器，针对四种主要斑块发展类型，测定了死后人体主动脉每激光脉冲的切割深度与激光能量密度的函数关系。数据表明，即使在非常高的（100毫焦/平方毫米）激光能量密度下，随着钙化程度的增加，每脉冲的切割深度也会逐渐减小。针对四种斑块类型中的每一种，对使用35纳秒持续时间的激光脉冲获得的氙氯激光切割速率数据与使用200纳秒持续时间的脉冲获得的数据进行了比较。随着组织钙化程度的增加，长脉冲情况下需要更高的氙氯激光能量密度才能实现与使用较短脉冲持续时间时观察到的相同的每脉冲切割深度。
