Unenhanced CT in the evaluation of urinary calculi: application of advanced computer methods.
Recent advances in computer hardware and software technology enable radiologists to examine tissues and structures using three-dimensional figures constructed from the multiple planar images acquired during a spiral CT examination. Three-dimensional CT techniques permit the linear dimensions of renal calculi to be determined along all three coordinate axes with a high degree of accuracy and enable direct volumetric analysis of calculi, yielding information that is not available from any other diagnostic modality. Additionally, three-dimensional techniques can help to identify and localize calculi in patients with suspected urinary colic.
Olcott
E W
EW
Stanford University School of Medicine, Palo Alto, CA, USA.
Sommer
F G
FG
D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods; D014545:Urinary Calculi / Q000000981:diagnostic imaging*