CORRELATION BETWEEN ANTERIOR–POSTERIOR AND LATERAL DIMENSIONS WITH THE EFFECTIVE AND WATER-EQUIVALENT DIAMETERS IN AXIAL IMAGES FROM HEAD COMPUTED TOMOGRAPHY EXAMINATIONS. Issue 3 (27th September 2021)

• Record Type: Journal Article
• Authors: Dewi, Winda Kusuma; Anam, Choirul; Hidayanto, Eko; Wati, Annisa Lidia; Dougherty, Geoff
• Is Part Of: Radiation protection dosimetry. Volume 196:Issue 3/4(2021)
• Page Start: 248
• Page End: 256
• Publication Date: 2021-09-27
• Subjects: Radiation dosimetry -- Periodicals; Radiation -- Safety measures -- Periodicals; 363.1799
• DOI: 10.1093/rpd/ncab144
• Languages: English
• ISSNs: 0144-8420

Abstract

Abstract: The study aims to correlate the effective diameter (Deff ) and water-equivalent diameter (Dw ) parameters with anterior–posterior (AP), lateral (LAT) and AP + LAT dimensions in order to estimate the patient dose in head CT examinations. Seventy-four patient datasets from head CT examinations were retrospectively collected. The patient's sizes were calculated from the middle slice using a software of IndoseCT. Dw and Deff were plotted as functions of AP, LAT and AP + LAT dimensions. The best trendline fit for LAT and AP functions was a second order polynomial, which resulted in R 2 of 0.89 for Deff vs LAT, 0.88 for Dw vs LAT, 0.92 for Deff vs AP and 0.91 for Dw vs AP. A linear correlation was found for Deff vs AP + LAT, Dw vs AP + LAT and Dw vs Deff with R 2 of 0.97, 0.96 and 0.98, respectively.