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Studies from Logan College of Chiropractic, Medical Department in the area of kidneys published
2009 JUN 29 - (NewsRx.com) -- "We determined the effect of reconstructed section width on sensitivity and specificity for detecting renal calculi using multidetector row computerized tomography. Three to 5 renal stones 2 to 4 mm in size were randomly placed into 14 human cadaveric kidneys and scanned by 16-row detector computerized tomography at 1.25 mm collimation and identical scanning parameters," scientists in the United States report. "After acquisition images were reconstructed with a section width of 1.25, 2.5, 3.75 and 5.0 mm, and reviewed independently by 2 blinded radiologists. Comparisons of sensitivity and specificity between different section widths were assessed with the McNemar test and Cochran's Q statistics. Specificity was not significantly affected by section width (94.6% to 97.7%). In contrast, sensitivity increased as stone size increased and as section width decreased. Sensitivity to detect all stones was 80.7%, 80.7%, 87.7% and 92.1% for 5.0, 3.75, 2.5 and 1.25 mm section widths, respectively. Interobserver agreement for stone detection was excellent (kappa 0.858). Although the 2.0 mm stone detection rate improved with thinner section widths (79.4% vs 52.9% for 1.25 vs 5.0 mm, p = 0.004), stones greater than 2.0 mm were similarly detected at different slice selections (p = 0.056 to 0.572). Independent of other scanning parameters reconstruction section width influences the ability to detect small renal calculi," wrote D.H. Jin and colleagues, Logan College of Chiropractic, Medical Department. The researchers concluded: "It must be considered when creating computerized tomography protocols." Jin and colleagues published their study in the Journal of Urology (Renal Stone Detection Using Unenhanced Multidetector Row Computerized Tomography - Does Section Width Matter' Journal of Urology, 2009;181(6):2767-2773). For additional information, contact D.D. Baldwin, Loma Linda Logan College of Chiropractic, School Medical, Dept. of Urology, Medical Center, 11234 Anderson St., Room A560, Loma Linda, CA 92354, USA. The publisher's contact information for the Journal of Urology is: Elsevier Science Inc., 360 Park Avenue South, New York, NY 10010-1710, USA. Keywords: United States, Loma Linda, Kidneys, Cadaver, Diagnostic Imaging, Diagnostics, Kidney Calculi, Nephrolithiasis, Nephrology, Renal Calculi, Urology, Logan College of Chiropractic, Medical Department. This article was prepared by Gastroenterology Week editors from staff and other reports. Copyright 2009, Gastroenterology Week via NewsRx.com.
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