Can a dual-energy computed tomography predict unsuitable stone components for extracorporeal shock wave lithotripsy?
Korean Journal of Urology
;
: 644-649, 2015.
Article
in English
| WPRIM
| ID: wpr-47848
ABSTRACT
PURPOSE:
To assess the potential of dual-energy computed tomography (DECT) to identify urinary stone components, particularly uric acid and calcium oxalate monohydrate, which are unsuitable for extracorporeal shock wave lithotripsy (ESWL). MATERIALS ANDMETHODS:
This clinical study included 246 patients who underwent removal of urinary stones and an analysis of stone components between November 2009 and August 2013. All patients received preoperative DECT using two energy values (80 kVp and 140 kVp). Hounsfield units (HU) were measured and matched to the stone component.RESULTS:
Significant differences in HU values were observed between uric acid and nonuric acid stones at the 80 and 140 kVp energy values (p or =90%, calcium oxalate dihydrate group monohydrate<90%). Significant differences in HU values were detected between the two groups at both energy values (p<0.001).CONCLUSIONS:
DECT improved the characterization of urinary stone components and was a useful method for identifying uric acid and calcium oxalate monohydrate stones, which are unsuitable for ESWL.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Uric Acid
/
Lithotripsy
/
Calcium Oxalate
/
Kidney Calculi
/
Ureteral Calculi
/
Tomography, X-Ray Computed
/
Radiography, Dual-Energy Scanned Projection
/
Patient Selection
Type of study:
Prognostic study
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
English
Journal:
Korean Journal of Urology
Year:
2015
Type:
Article
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