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Prediction of Response to Lithotripsy—the Use of Scanning Electron Microscopy and X‐ray Energy Dispersive Spectroscopy
Author(s) -
COHEN N. P.,
PARKHOUSE HELEN,
SCOTT M. L.,
BOWSHER W. G.,
CROCKER P.,
WHITFIELD H. N.
Publication year - 1992
Publication title -
british journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 0007-1331
DOI - 10.1111/bju.1992.70.5.469
Subject(s) - scanning electron microscope , lithotripsy , clearance , spectroscopy , energy dispersive x ray spectroscopy , oxalate , materials science , calcium oxalate , x ray , mineralogy , chemistry , optics , medicine , radiology , urology , physics , inorganic chemistry , composite material , quantum mechanics
Summary A single urine sample was obtained from each of 38 patients before and immediately after treatment with a Wolf Piezolith 2300. Each sample was analysed for crystals using scanning electron microscopy and X‐ray energy dispersive spectroscopy. In all cases it was possible to make a stone diagnosis prior to treatment and there was 100% correlation between the pre‐ and post‐treatment diagnosis. All stones smaller than 90 mm 2 on plain X‐ray cleared with piezoelectric lithotripsy alone, regardless of composition. Larger stones composed of calcium oxalate were all successfully fragmented, but 5 of 15 mixed or phosphate stones failed to respond.
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