Effect of lateral decubitus acquisition in accuracy and lung severity estimation of chest computed tomography in children with suspected COVID-19.

Objective: To compare inter-rater reliability, diagnostic accuracy, and extension of pulmonary involvement in children with suspected COVID-19 submitted to supine or supine and lateral decubitus computed tomography imaging.

Methods: Retrospective study carried out between March 2020 and March 2021 with patients submitted to reverse transcription-polymerase chain reaction testing and chest computed tomography. Patients were divided into two groups: supine or supine and lateral decubitus imaging.

EVALUATION OF THE RADIATION EXPOSURE IN SEQUENTIAL HEAD TOMOGRAPHIC EXAMS OF PATIENTS WITH TRAUMATIC BRAIN INJURY AND DECOMPRESSIVE CRANIECTOMY.

Brain trauma patients who underwent decompressive craniectomy make several computed tomography (CT) scans until cranioplasty. Despite several recommendations to avoid unnecessary radiological exposure, few studies systematically analyzed the technical parameters employed. CT exams of 14 patients were retrospectively analyzed to find display field of view (DFOV), dose length product (DLP), volume computed tomography dose index (CTDIvol) and effective dose (ED).

Image evaluation and breast density categories as a function of mammary positioning in full-field digital mammography.

Background: Appropriate mammary positioning is an important factor in optimizing image quality in mammography (MMG).

Purpose: To study the correlation of quality criteria and breast density classification proposed by the American College of Radiology (ACR) and European Guidelines and its influence to achieve a proper positioning, therefore an adequate MMG.

Material And Methods: A total of 128 routine MMG examinations were reviewed for the definition of breast composition parenchyma and assessment of several quality criteria proposed by the ACR and European Guidelines to achieve an adequate MMG.