High-speed photographic evaluation of holmium laser

被引:42
作者
Dushinski, JW [1 ]
Lingeman, JE [1 ]
机构
[1] Methodist Hosp, Inst Kidney Stone Dis, Indianapolis, IN 46202 USA
关键词
D O I
10.1089/end.1998.12.177
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Little information has been published regarding the relative contributions and exact mechanisms involved in stone fragmentation during holmium laser lithotripsy, High-speed photography has been used to evaluate other intracorporeal lithotripsy devices, and we chose this method to evaluate the holmium laser. High-speed photographic evaluation of cavitation bubbles produced by the four fiber sizes (200, 365, 550, and 1000 mu m) showed a moderate degree of correlation (n = 0.71 for 1 J pulses, r = 0.80 for 4 J pulses) between maximal bubble size and fiber diameter. Eliminating the data from the eroded 550 mu m fiber strengthened the correlation to r = 0.94 for 1 J pulses and r = 0.99 for 4 J pulses. The importance of keeping fiber tips in good working condition was thereby demonstrated. Evidence of a thermal effect of the laser on stone and chalk was also obtained. In a parallel study, no correlation (r = -0.08) was found between fiber diameter and stone fragmentation efficiency using chalk as an in vitro stone model.
引用
收藏
页码:177 / 181
页数:5
相关论文
共 15 条
[1]  
BERLIN R, 1992, Journal of Urology, V147, p296A
[2]   PRELIMINARY EXPERIENCE WITH HOLMIUM-YAG LASER LITHOTRIPSY [J].
DENSTEDT, JD ;
RAZVI, HA ;
SALES, JL ;
EBERWEIN, PM .
JOURNAL OF ENDOUROLOGY, 1995, 9 (03) :255-258
[3]  
Dushinski J W, 1997, Tech Urol, V3, P60
[4]   Holmium laser resection of the prostate: Preliminary results of a new method for the treatment of benign prostatic hyperplasia [J].
Gilling, P ;
Cass, CB ;
Cresswell, MD ;
Fraundorfer, MR .
UROLOGY, 1996, 47 (01) :48-51
[5]  
Grasso Michael, 1996, Journal of Endourology, V10, pS120
[6]  
Jansen ED, 1996, LASER SURG MED, V18, P278, DOI 10.1002/(SICI)1096-9101(1996)18:3<278::AID-LSM10>3.0.CO
[7]  
2-2
[8]   USE OF THE HOLMIUM-YAG (HO YAG) LASER FOR TREATMENT OF SUPERFICIAL BLADDER-CARCINOMA [J].
JOHNSON, DE .
LASERS IN SURGERY AND MEDICINE, 1994, 14 (03) :213-218
[9]  
JOHNSON DE, 1995, LASER SURG MED, V7, P67
[10]   STONE SURFACE-AREA DETERMINATION TECHNIQUES - A UNIFYING CONCEPT OF STAGHORN STONE BURDEN ASSESSMENT [J].
LAM, HS ;
LINGEMAN, JE ;
RUSSO, R ;
CHUA, GT .
JOURNAL OF UROLOGY, 1992, 148 (03) :1026-1029