Results 41 to 50 of about 1,067,276 (209)

Meaning of Interior Tomography [PDF]

, 2013
The classic imaging geometry for computed tomography is for collection of un-truncated projections and reconstruction of a global image, with the Fourier transform as the theoretical foundation that is intrinsically non-local. Recently, interior tomography research has led to theoretically exact relationships between localities in the projection and ...
arxiv   +1 more source

Multi-Detector CT Findings of Typical and Atypical Appendicitis: A Pictorial Essay

Journal of the Korean Society of Radiology, 2023
Multi-detector CT (MDCT) is a highly accurate diagnostic tool that is commonly used to evaluate appendicitis and its complications. The diagnosis of appendicitis based on MDCT findings can be difficult and challenging when the observed findings are ...
Na Ri Yun, You Dong Won, Su Lim Lee
doaj   +1 more source

Ring artifacts removal in X-ray-induced acoustic computed tomography

Journal of Innovative Optical Health Sciences, 2022
X-ray-induced acoustic computed tomography (XACT) is a hybrid imaging modality for detecting X-ray absorption distribution via ultrasound emission. It facilitates imaging from a single projection X-ray illumination, thus reducing the radiation exposure ...
Prabodh Kumar Pandey, Hari Om Aggrawal, Siqi Wang, Kaitlyn Kim, An Liu, Liangzhong Xiang   +5 more
doaj   +1 more source

Teknik Pemeriksaan CT Scan Abdomen Pada Kasus Tumor Intra Abdomen Di Instalasi Radiologi Rumah Sakit X [PDF]

, 2023
CT-Scan (Computed Tomography Scanner) is a diagnostic support tool that has universal application for examining all body organs, such as the central nervous system, muscles and bones, throat and abdominal cavity. CT-Scan (Computed Tomography Scanner) was
Anak Agung Aris Diartama, Dewi Rahmawati, Rahmat Widodo   +2 more
core   +2 more sources

Terahertz Computed Tomography of NASA Thermal Protection System Materials [PDF]

, 2012
A terahertz axial computed tomography system has been developed that uses time domain measurements in order to form cross-sectional image slices and three-dimensional volume renderings of terahertz-transparent materials. The system can inspect samples as
Rauser, R. W., Reyes-Rodriguez, S., Roth, D. J., Ussery, W. W., Zimdars, D. A.   +4 more
core   +2 more sources

Two-view topogram-based anatomy-guided CT reconstruction for prospective risk minimization

Scientific Reports
To facilitate a prospective estimation of the effective dose of an CT scan prior to the actual scanning in order to use sophisticated patient risk minimizing methods, a prospective spatial dose estimation and the known anatomical structures are required.
Chang Liu, Laura Klein, Yixing Huang, Edith Baader, Michael Lell, Marc Kachelrieß, Andreas Maier   +6 more
doaj   +1 more source

Modern principles of the radiation protection from sources of ionizing radiation in medicine. Part 1: Trends, structure of x-ray diagnostics and doses from medical exposure

Радиационная гигиена, 2019
Implementation of modern highly informative methods of X-ray diagnostics (computed tomography, interventional examinations, nuclear medicine), associated with the increase of doses to the public and patients, requires the development and improvement of ...
G. G. Onischenko, A. Yu. Popova, I. K. Romanovich, A. V. Vodovatov, N. S. Bashketova, O. A. Istorik, L. A. Chipiga, I. G. Shatsky, L. V. Repin, A. M. Biblin   +9 more
doaj   +1 more source

Limited-Angle Tomography Reconstruction via Deep End-To-End Learning on Synthetic Data [PDF]

arXiv, 2023
Computed tomography (CT) has become an essential part of modern science and medicine. A CT scanner consists of an X-ray source that is spun around an object of interest. On the opposite end of the X-ray source, a detector captures X-rays that are not absorbed by the object.
arxiv  

X-ray induced acoustic computed tomography

Photoacoustics, 2020
X-ray imaging has proved invaluable in medical diagnoses and non-destructive testing (NDT) in the past century. However, there remain two major limitations: radiation harm and inaccessibility to the sample.
P. Samant, L. Trevisi, X. Ji, L. Xiang
doaj  

OVERVIEW OF THE USE OF X-RAY EQUIPMENT IN ELECTRONICS QUALITY TESTS

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2021
Surface-mount technology is now widely used in the production of many components. The development of the miniaturised electronics industry forces the development of increasingly accurate inspection methods.
Magdalena Michalska
doaj   +1 more source