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COMPARISON OF HELICAL COMPUTERIZED TOMOGRAPHY AND PLAIN RADIOGRAPHY FOR ESTIMATING URINARY STONE SIZE

2002; Lippincott Williams & Wilkins; Volume: 167; Issue: 3 Linguagem: Inglês

10.1016/s0022-5347(05)65272-x

1527-3792

Narendra Narepalem, Chandru P. Sundaram, I C Boridy, Yan Yan, Jay P. Heiken, Ralph V. Clayman,

Pediatric Urology and Nephrology Studies

No AccessJournal of UrologyCLINICAL UROLOGY: Original Articles1 Mar 2002COMPARISON OF HELICAL COMPUTERIZED TOMOGRAPHY AND PLAIN RADIOGRAPHY FOR ESTIMATING URINARY STONE SIZE NARENDRA NAREPALEM, CHANDRU P. SUNDARAM, ILLYA C. BORIDY, YAN YAN, JAY P. HEIKEN, and RALPH V. CLAYMAN NARENDRA NAREPALEMNARENDRA NAREPALEM , CHANDRU P. SUNDARAMCHANDRU P. SUNDARAM , ILLYA C. BORIDYILLYA C. BORIDY , YAN YANYAN YAN , JAY P. HEIKENJAY P. HEIKEN , and RALPH V. CLAYMANRALPH V. CLAYMAN View All Author Informationhttps://doi.org/10.1016/S0022-5347(05)65272-XAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: We evaluated the accuracy of noncontrast spiral computerized tomography (CT) for determining urinary stone size compared with plain x-ray. Materials and Methods: We retrospectively analyzed noncontrast helical CT and plain x-ray of the kidneys, ureters and bladder images of 39 patients with urolithiasis who underwent each study from July 1997 to February 1999. Stone size on x-ray was measured in the craniocaudal and transverse dimensions by a single radiologist (I.C.B.). The size of the same stone was then determined on blinded noncontrast spiral CT images. Stones that were less than 3 mm. were excluded from study. On CT estimated craniocaudal dimension was based on collimation thickness, the reconstruction interval and the number of images on which the stone was visualized. Results: We evaluated 58 stones 3 mm. or larger in the greatest dimension on plain x-ray of the kidneys, ureters and bladder, and noncontrast spiral CT, including 15 in the distal ureter, 7 in the mid or proximal ureter and 36 in the kidneys. Stone size was 3 to 18 mm. in the greatest dimension. Mean transverse dimension of the stone plus or minus standard deviation on noncontrast spiral CT was 5.1 ± 1.08 versus 4.9 ± 1.08 mm. on plain x-ray of the kidneys, ureters and bladder (paired t test; p = 0.335). The mean craniocaudal dimension on noncontrast spiral CT was 7.5 ± 1.98 versus 6.7 ± 1.98 mm. on plain x-ray paired t test (p = 0.005). Conclusions: Noncontrast spiral CT enables a similar measurement of stone size along the transverse dimension as plain x-ray of the kidneys, ureters and bladder. In individuals noncontrast spiral CT does not accurately measure the craniocaudal dimension of stones compared with plain x-ray when standard acquisition and reconstruction techniques are used. In this regard it has a tendency to overestimate stone size by an average of 0.8 mm. References 1 : Roentgenography of the urinary tract during excretion of sodium iodide. JAMA1923; 80: 368. Google Scholar 2 : Practical Statistics for Medical Research. New York: Chapman & Hall1991: 396. 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Google Scholar From the Departments of Urology, Mallinkrodt Institute of Radiology, Washington University, St. Louis, Missouri© 2002 by American Urological Association, Inc.FiguresReferencesRelatedDetailsCited byPatel S, Stanton P, Zelinski N, Borman E, Pozniak M, Nakada S and Pickhardt P (2018) Automated Renal Stone Volume Measurement by Noncontrast Computerized Tomography is More Reproducible Than Manual Linear Size MeasurementJournal of Urology, VOL. 186, NO. 6, (2275-2279), Online publication date: 1-Dec-2011.Eisner B, Kambadakone A, Monga M, Anderson J, Thoreson A, Lee H, Dretler S and Sahani D (2018) Computerized Tomography Magnified Bone Windows are Superior to Standard Soft Tissue Windows for Accurate Measurement of Stone Size: An In Vitro and Clinical StudyJournal of Urology, VOL. 181, NO. 4, (1710-1715), Online publication date: 1-Apr-2009.Osman Y, El-Tabey N, Refai H, Elnahas A, Shoma A, Eraky I, Kenawy M and El-Kapany H (2018) Detection of Residual Stones After Percutaneous Nephrolithotomy: Role of Nonenhanced Spiral Computerized TomographyJournal of Urology, VOL. 179, NO. 1, (198-200), Online publication date: 1-Jan-2008.Portis A, Laliberte M, Drake S, Holtz C, Rosenberg M and Bretzke C (2018) Intraoperative Fragment Detection During Percutaneous Nephrolithotomy: Evaluation of High Magnification Rotational Fluoroscopy Combined With Aggressive NephroscopyJournal of Urology, VOL. 175, NO. 1, (162-165), Online publication date: 1-Jan-2006.NADLER R, STERN J, KIMM S, HOFF F and RADEMAKER A (2018) CORONAL IMAGING TO ASSESS URINARY TRACT STONE SIZEJournal of Urology, VOL. 172, NO. 3, (962-964), Online publication date: 1-Sep-2004.PAREEK G, ARMENAKAS N and FRACCHIA J (2018) Hounsfield Units on Computerized Tomography Predict Stone-Free Rates After Extracorporeal Shock Wave LithotripsyJournal of Urology, VOL. 169, NO. 5, (1679-1681), Online publication date: 1-May-2003.KOBAYASHI T, NISHIZAWA K, MITSUMORI K and OGURA K (2018) Impact of Date of Onset on the Absence of Hematuria in Patients with Acute Renal ColicJournal of Urology, VOL. 170, NO. 4 Part 1, (1093-1096), Online publication date: 1-Oct-2003.KOBAYASHI T, NISHIZAWA K, WATANABE J and OGURA K (2018) Clinical Characteristics of Ureteral Calculi Detected by Nonenhanced Computerized Tomography After Unclear Results of Plain Radiography and UltrasonographyJournal of Urology, VOL. 170, NO. 3, (799-802), Online publication date: 1-Sep-2003. Volume 167Issue 3March 2002Page: 1235-1238 Advertisement Copyright & Permissions© 2002 by American Urological Association, Inc.Keywordstomography, x-ray computedurinary tractcalculikidneyureterMetricsAuthor Information NARENDRA NAREPALEM More articles by this author CHANDRU P. SUNDARAM More articles by this author ILLYA C. BORIDY More articles by this author YAN YAN More articles by this author JAY P. HEIKEN More articles by this author RALPH V. CLAYMAN More articles by this author Expand All Advertisement PDF downloadLoading ...