Ultrasound Velocity — A Measure of Stone Strength?
Urinary stones exhibit a variable response to extracorporeal Shockwave lithotripsy (ESWL) and endoscopic lithotripsy. Although fragmentation is affected by the patient’s size, the type of Shockwave generating system, mode of localisation etc, it is also known that the physico-chemical characteristics of calculi affect treatment outcome. However it is still unclear why some stones break more readily than others. Although chemical composition has been proposed as an important factor, a literature review revealed conflicting results.
KeywordsCalcium Oxalate Extracorporeal Shockwave Lithotripsy Urinary Stone Urinary Calculus Pulse Transit Time
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
S Murata, H Watanabe, T Takahashi, K Watanabe and S Oinuma, Construction and strength of Urinary Calculi, Jpn J Urol
68: 249 (1977).Google Scholar
SP Dretler, Stone fragility — a new therapeutic distinction, J Urol
139: 1124 (1988).PubMedGoogle Scholar
LW Klee, CG Britto and JE Lingeman. The implications of brushite calculi, J Urol
145: 715 (1991).PubMedGoogle Scholar
A Kelly, in: “Strong Solids,” Clarendon Press, Oxford (1973).Google Scholar
LG Johrde and FH Cocks, Microhardness studies of renal calculi, Mater lett
3: 111 (1985).CrossRefGoogle Scholar
HD Mitcheson, RG Zamenhoff, MS Bankoff and EL Prien, Determination of the chemical composition of urinary calculi by computerised tomography, J Urol
130: 814 (1983).PubMedGoogle Scholar
WG Bowsher, P Crocker, JWA Ramsay and HN Whitfield, Single urine sample diagnosis. A new concept in stone diagnosis, Br J Urol
65: 236 (1990).PubMedCrossRefGoogle Scholar
NP Cohen, H Pakhouse, ML Scott, WG Bowsher, P Crocker and HN Whitfield. Prediction of response to lithotripsy — the use of scanning electron microscopy and X-ray energy dispersive spectroscopy, Br J Urol
70: 469 (1992).PubMedCrossRefGoogle Scholar
CM Langton, AV Ali, CM Riggs, GP Evans and W Bonfield, A contact method for the assessment of ultrasonic velocity and broadband attenuation in cortical and cancellous bone, Clin Phys Physiol Meas
11: 243 (1990).PubMedCrossRefGoogle Scholar
© Springer Science+Business Media New York 1994