Abstract |
The properties of a laser which effect stone fragmentation have been studied. The pulsed dye laser emitting at 504 nm. in one microsecond duration pulses appears to be the optimum out of a wide range of parameters tested. The laser is coupled to a 200 micron core fiber; this complete with its cladding has a total diameter of only 0.25 mm. Most calculi are fragmented by a series of pulses of up to 30 mJ. The system is used by firing bursts of pulses with the fiber actually in contact with the stone. The result is a very controlled fragmentation which is particularly suited to use in the confines of the ureter. This modality of treatment utilises less energy than ultrasound or electrohydraulic probes to fragment a stone and the very fine, flexible fiber represents a considerable miniaturization.
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Authors | G Watson, S Murray, S P Dretler, J A Parrish |
Journal | The Journal of urology
(J Urol)
Vol. 138
Issue 1
Pg. 195-8
(Jul 1987)
ISSN: 0022-5347 [Print] United States |
PMID | 2885426
(Publication Type: Journal Article)
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Chemical References |
- Magnesium Compounds
- Phosphates
- Calcium Oxalate
- Struvite
- Magnesium
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Topics |
- Calcium Oxalate
- Humans
- Laser Therapy
- Lithotripsy
(methods)
- Lithotripsy, Laser
- Magnesium
- Magnesium Compounds
- Phosphates
- Struvite
- Time Factors
- Urinary Calculi
(analysis, therapy)
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