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...

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...

introduction : one of the key factors in successful endodontic therapy is to adequately fill the root canals. the aim of this in vitro study was to compare the quality of four different root canal obturation techniques: cold lateral condensation (clc), warm vertical condensation (wvc), obtura ii (oii) and gutta flow (gf) by using micro-computed tomography (micro ct). materials and methods: a to...

OBJECTIVE The aim of this study is to investigate the value of cerebral CT angiography (CTA) with low tube voltage in detection of intracranial aneurysms. MATERIALS AND METHODS A total of 294 consecutive patients with spontaneous subarachnoid hemorrhage (SAH) were enrolled in this study and randomly assigned into conventional voltage CTA (C-CTA) group and low voltage CTA (L-CTA) group. The ob...