Computed tomographic analysis of renal calculi

Journal Article · Thu Mar 01 04:00:00 EST 1984 · Am. J. Roentgenol.; (United States)

DOI:https://doi.org/10.2214/ajr.142.3.549· OSTI ID:6915885

Hillman, B J; Drach, G W; Tracey, P; Gaines, J A

An in vitro study sought to determine the feasibility of using computed tomography (CT) to analyze the chemical composition of renal calculi and thus aid in selecting the best treatment method. Sixty-three coded calculi were scanned in a water bath. Region-of-interest measurements provided the mean, standard deviation, and minimum and maximum pixel values for each stone. These parameters were correlated with aspects of the stones' chemical composition. A multivariate analysis showed that the mean and standard deviation of the stones' pixel values were the best CT parameters for differentiating types of renal calculi. By using computerized mapping techniques, uric acid calculi could be perfectly differentiated from struvite and calcium oxalate calculi. The latter two types also were differentiable, but to a lesser extent. CT has a potential role as an adjunct to clinical and laboratory methods for determining the chemical composition of renal calculi in an effort to select optimal treatment.

• Research Organization: Univ. of Arizona, Tucson
• OSTI ID: 6915885
• Journal Information: Am. J. Roentgenol.; (United States), Journal Name: Am. J. Roentgenol.; (United States) Vol. 142:3; ISSN AJROA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
AROMATICS
AZAARENES
BODY
CALCULI
CHEMICAL COMPOSITION
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
HETEROCYCLIC COMPOUNDS
KIDNEYS
MATHEMATICS
MULTIVARIATE ANALYSIS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANS
PURINES
STATISTICS
TOMOGRAPHY
URIC ACID
XANTHINES