Computed tomography of urinary calculi

Nondestructive analysis of urinary calculi using micro computed tomography

BACKGROUND Micro computed tomography (micro CT) has been shown to provide exceptionally high quality imaging of the fine structural detail within urinary calculi. We tested the idea that micro CT might also be used to identify the mineral composition of urinary stones non-destructively. METHODS Micro CT x-ray attenuation values were measured for mineral that was positively identified by infra...

Accuracy of ultrasound versus computed tomography urogram in detecting urinary tract calculi.

AIM To determine the (i) sensitivity and specificity of ultrasound (USG) in the detection of urinary tract calculi, (ii) size of renal calculi detected on USG, and (iii) size of renal calculi not seen on USG but detected on computed tomography urogram (CTU). METHODS A total of 201 patients' USG and CTU were compared retrospectively for the presence of calculi. Sensitivity, specificity, accura...

Comparison of Non-contrast-Enhanced Computed Tomography and Intravenous Pyelogram for Detection of Patients With Urinary Calculi

PURPOSE The aim of this study was to investigate the changing pattern in the use of intravenous pyelogram (IVP), conventional computed tomography (CT), and non-contrast-enhanced computed tomography (NECT) for evaluation of patients with acute flank pain. MATERIALS AND METHODS We retrospectively reviewed the medical records of 2,180 patients with acute flank pain who had visited Bundang Jesaen...

Urinary calculi.

IJANTITATIVE CHEMICAL ANALYSES of urinary calculi have been done in these laboratories for some twenty years. During this time almost two thousand stones have been examined. In the early days of this period, the only quantitative method available was that of a complete analysis of the inorganic ions and organic compounds present, which was quite difficult and tedious. After the development of t...

Exhibition of Urinary Calculi