Pectus excavatum (PEx) is a chest wall deformity that leads to sternal depression and can impair cardiopulmonary function. CT imaging is used for surgical planning but exposes children to a significant radiation dose. Ultra-low dose CT enables PEx assessment in children with radiation exposure comparable to plain radiographs. The purpose of this study is to evaluate image quality and detection of thoracic pathology on ultra-low dose CT in children with PEx. Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Kim Jesi, Nimkin Katherine, Westra Sjirk, Gee Michael, Stockton Katherine, Savage Cristy

Keywords: Pectus excavatum, ultra-low dose, pediatrics

Scanner console-provided volume CT Dose Index (CTDIvol) and Dose Length Product (DLP) are frequently added up inappropriately to obtain cumulative dose values in patients exposed to multiple multi-sequence CT exams, performed with varying z-axis coverage and often with longitudinal tube current modulation. We present the patient-size specific Dose Line Integral (DLI) as a new metric that allows this task to be performed in a more precise fashion across multiple scanner platforms Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Tabari Azadeh, Li Xinhua, Yang Kai, Liu Bob, Gee Michael, Westra Sjirk

Keywords: Radiation, CT, Quality