Background: The extent of the dose received by breast during head CT, needs quantification to effectively predict risk carcinoma and gene mutation. Objective: study aimed evaluate radiation a CT scan in Enugu State. Methods: This cross-sectional which involved 52 adults women selected purposively, described doses shielded unshielded breasts examinations. relationship between anthropo-technical ...

Para reducir la dosis de radiación en población pediátrica entre 0 y 10 años, a que se le realizan tomografías cráneo simple el Hospital Universitario Clínica San Rafael, redujo kV con adquieren las computarizadas (TC) 120 80 kV. Retrospectivamente, compara calidad imagen TC 33 pacientes tomados Se realiza un análisis cuantitativo uso relación contraste ruido materia gris blanca, índice artefac...

OBJECTIVE The aim of this prospective study was to evaluate the performance of ultra-low dose CT for the diagnosis of pediatric-like fractures and ascertain the lowest dose level sufficient for diagnostics. MATERIALS AND METHODS Fifty-one bones of young pig cadavers were artificially fractured and subsequently examined by using a 64 multi-detector CT with 36 various dose levels down to a dose...

We performed retrospective (first-step) and prospective (second-step) studies to evaluate the body information and noise on temporal bone computed tomography (CT) images in efforts to identify the optimized tube current yielding the greatest reduction in the radiation exposure of pediatric patients undergoing temporal bone CT studies. Our first-step study included 90 patients subjected to tempo...

Purpose To determine the suitable kVp pair for optimal image quality of virtual monochromatic images (VMIs) and iodine quantification accuracy at low concentration, using a third generation dual-source CT (DSCT). Materials methods Multi-energy phantoms with without body rings were scanned DSCT four pairs (tube “A”/“B” voltage): 100/Sn150, 90/Sn150, 80/Sn150 70/Sn150 kVp. The reference mAs was a...

The ACR opened the Computed Tomography Dose Index Registry (DIR) for general participation by all facilities in May 2011. Just over 2 years after its launch, the registry has more than 750 registered facilities, 465 of which were actively contributing data at the end of August 2013. The registry has dose index information on 5.5 million CT examinations, which in turn include 9.4 million irradia...

OBJECTIVE Several studies have been published regarding the use of bismuth shielding to protect the breast in computed tomography (CT) scans and, up to the writing of this article, only one publication about barium shielding was found. The present study was aimed at characterizing, for the first time, a lead breast shielding. MATERIALS AND METHODS The percentage dose reduction and the influen...

OBJECTIVES To investigate the feasibility of high-pitch CT pulmonary angiography (CTPA) in 3rd generation dual-source CT (DSCT) in unselected patients. METHODS Forty-seven patients with suspected pulmonary embolism underwent high-pitch CTPA on a 3rd generation dual-source CT scanner. CT dose index (CTDIvol) and dose length product (DLP) were obtained. Objective image quality was analyzed by c...

In this work management of pediatric patients doses for Computed Tomography examinations have been studied at KorleBu Teaching Hospital. The assessment of the management system involved: Estimation of Weighted Computed Tomography Dose Index (CTDIw), Volumetric Computed Tomography Dose Index (CTDIvol), Dose Length Product (DLP) and Effective dose (E); and Evaluation of quality assurance and qual...

OBJECTIVE This work aims to explore the effects of adaptive statistical iterative reconstruction (ASiR) and model-based iterative reconstruction (MBIR) algorithms in reducing computed tomography (CT) radiation dosages in abdominal imaging. METHODS CT scans on a standard male phantom were performed at different tube currents. Images at the different tube currents were reconstructed with the fi...