Transient cavitation and acoustic emission produced by different laser lithotripters.
Transient cavitation and acoustic emission produced by different laser lithotripters.
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不同激光碎石机产生的瞬态空化和声发射。
DOI：
10.1089/end.1998.12.371
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发表时间：
1998
影响因子：
2.7
通讯作者：
Preminger,GM
中科院分区：
文献类型：
--
作者：
Zhong,P;Tong,HL;Cocks,FH;Pearle,MS;Preminger,GM
利用高速摄影和声发射测量研究了脉冲染料和钬激光碎石机产生的瞬态空化和冲击波。此外，使用结石模型来比较各种激光和液电碎石机的碎石效率。脉冲染料激光的波长（504 nm）被大多数结石材料强烈吸收，但不被水吸收，并且脉冲持续时间为101 μsec，在目标结石表面上诱导等离子体形成。随后，等离子体的快速膨胀形成空化泡，其球形地膨胀到最大尺寸，然后猛烈地塌陷，导致强烈的冲击波产生和微射流冲击，这包括使用短脉冲激光器进行结石破碎的主要机制。相比之下，钬激光的波长（2100 nm）最容易被水和所有石材吸收，脉冲持续时间为250至350 μsec，在光纤尖端产生细长的梨形空化气泡，形成蒸汽通道，将随后的激光能量传导到目标石材（莫斯效应）。细长气泡的膨胀和随后的崩溃是不对称的，导致弱激波产生和微射流冲击。因此，钬激光碎石术中的结石破碎主要由热消融（钻孔效应）引起。
Transient cavitation and shockwave generation produced by pulsed-dye and holmium:YAG laser lithotripters were studied using high-speed photography and acoustic emission measurements. In addition, stone phantoms were used to compare the fragmentation efficiency of various laser and electrohydraulic lithotripters. The pulsed-dye laser, with a wavelength (504 nm) strongly absorbed by most stone materials but not by water, and a short pulse duration of ∼1 μsec, induces plasma formation on the surface of the target calculi. Subsequently, the rapid expansion of the plasma forms a cavitation bubble, which expands spherically to a maximum size and then collapses violently, leading to strong shockwave generation and microjet impingement, which comprises the primary mechanism for stone fragmentation with short-pulse lasers. In contrast, the holmium laser, with a wavelength (2100 nm) most strongly absorbed by water as well as by all stone materials and a long pulse duration of 250 to 350 μsec, produces an elongated, pear-shaped cavitation bubble at the tip of the optical fiber that forms a vapor channel to conduct the ensuing laser energy to the target stone (Moss effect). The expansion and subsequent collapse of the elongated bubble is asymmetric, resulting in weak shockwave generation and microjet impingement. Thus, stone fragmentation in holmium laser lithotripsy is caused primarily by thermal ablation (drilling effect).
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DOI：
10.1016/s0021-9258(18)34490-9
发表时间：
1982
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Alessandro Casinil;Massimo Giorlil;Robert;Hyland;A. Serroni;D. Gilfor;Farberg
通讯作者：
Farberg
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影响因子：
3.9
作者：
Farber,JL;Leonard,TB;Kyle,ME;Nakae,D;Serroni,A;Rogers,SA
通讯作者：
Rogers,SA
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影响因子：
3.9
作者：
Miccadei,S;Nakae,D;Kyle,ME;Gilfor,D;Farber,JL
通讯作者：
Farber,JL
影响因子：
13.5
作者：
TRIBBLE, DL;TAK, YA;JONES, DP
通讯作者：
JONES, DP
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影响因子：
5.1
作者：
P. Dogterom;J. Nagelkerke;J. van Steveninck;G. Mulder
通讯作者：
G. Mulder