We report here the results of a dose evaluation based on information obtained in a 2011 questionnaire as compared with an investigation made in 2007. Briefly, in general radiography, the dose used in most examinations in 2011 was lower than in 2007. However, since the entrance surface dose for chest X-rays showed an increase, there is a need to standardize the taking of digital images to be abl...

Deep neural networks have shown great improvements in low-dose computed tomography (CT) denoising. Early deep learning-based CT denoising algorithms were primarily based on supervised learning. However, learning requires a large number of training samples, which is impractical real-world scenarios. To address this problem, we propose novel unsupervised domain adaptation approach for This propos...

Objective. To systematize data on the appropriateness and effectiveness of LDCT in diagnosis lung lesions COVID-19.
 Materials methods. Analysis relevant national foreign literature sources scientific libraries eLIBRARY, PubMed by queries "low dose computed tomography COVID-19", COVID-19" published between 2020 2022. Publications were included review after assessing relevance to topic titl...

The purpose of this study was to evaluate the radiation dose reduction to patients and radiologists in computed tomography (CT) guided examinations for the thoracic region using CT fluoroscopy. Image quality evaluation of the real-time filtered back-projection (RT-FBP) images and the real-time adaptive iterative dose reduction (RT-AIDR) images was carried out on noise and artifacts that were co...

Background: One of the means of assessing dose to patients from Computed tomography (CT) procedure is through the determination of the skin entrance dose (ESD) with the appreciation of the concern that ocular exposure effects from CT scan includes possible induction of cancer and cataract. Due to the relatively more recent introduction of CT scans, little work has been done in this area in the ...

Table 1 Radiation dose (and comparative background radiation exposure) associated with various imaging techniques, including plain-film x-rays, computed tomography (CT) scans and computed tomography angiography (CTA) scans. Exposure calculated with ImPACT CT Patient Dosimetry Calculator (Version 0.99w, ImPACT, St. George’s The radiation exposure of Computed Tomographic Angiography (CTA) in DIEP...