Does gantry rotation time influence accuracy of volume computed tomography dose index (CTDI vol ) in modern CT?

2017 ◽  
Vol 37 ◽  
pp. 43-48 ◽  
Author(s):  
Atsushi Fukuda ◽  
Nao Ichikawa ◽  
Yoshiharu Fujita ◽  
Pei-Jan Paul Lin ◽  
Kosuke Matsubara ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Rotation Time ◽  
Volume Computed Tomography ◽  
Computed Tomography Dose Index ◽  
Dose Index

VOLUME CT DOSE INDEX AND DOSE-LENGTH PRODUCT VALUES ACCORDING TO FACILITY SIZE IN JAPAN

2020 ◽  
Vol 188 (2) ◽  
pp. 261-269
Author(s):  
Yuta Matsunaga ◽  
Yuya Kondo ◽  
Kenichi Kobayashi ◽  
Masanao Kobayashi ◽  
Kazuyuki Minami ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Contrast Agent ◽  
Ct Scanner ◽  
Dose Length Product ◽  
Ct Dose ◽  
Volume Computed Tomography ◽  
Ct Dose Index ◽  
Computed Tomography Dose Index ◽  
Facility Size ◽  
Dose Index

Abstract The aim of this study was to investigate differences in volume computed tomography dose index (CTDIvol) and dose-length product (DLP) values according to facility size in Japan. A questionnaire survey was sent to 3000 facilities throughout Japan. Data from each facility were collected including bed number, computed tomography (CT) scan parameters employed and the CTDIvol and/or DLP values displayed on the CT scanner during each examination. The CTDIvol and DLP for 11 adult and 6 paediatric CT examinations were surveyed. Comparison of CTDIvol and DLP values of each examination according to facility size revealed key differences in CT dose between small and large facilities. This study highlights the importance of lowering the dose of coronary artery examination with contrast agent in smaller facilities and of lowering the dose of adult and paediatric head CT without contrast agent in larger facilities. The results of this study are valid in Japan.

scholarly journals Assessment of computed tomography dose index (CTDI) using the platform GEANT4/GATE

2019 ◽  
Vol 12 ◽  
pp. 100405
Author(s):  
M. Mkimel ◽  
M.R. Mesradi ◽  
R. El Baydaoui ◽  
Y. Toufique ◽  
Z. Aitelcadi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Dose Index ◽  
Dose Index

An evaluation of computed tomography dose index measurements using a pencil ionisation chamber and small detectors

2019 ◽  
Vol 39 (1) ◽  
pp. 112-124 ◽  
Author(s):  
Choirul Anam ◽  
Toshioh Fujibuchi ◽  
Freddy Haryanto ◽  
Rena Widita ◽  
Idam Arif ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ionisation Chamber ◽  
Computed Tomography Dose Index ◽  
Dose Index

scholarly journals 257 A New Procedure and Concept of Helical Computed Tomography Dose Index (HTDI) in Dosimetry of Helical CT

1995 ◽  
Vol 51 (10) ◽  
pp. 1328
Author(s):  
Yoshihisa Muramatsu ◽  
Noriko Akiyama ◽  
Kouzou Hanai ◽  
Yasuyuki Fujita ◽  
Syuichi Katsuta
Keyword(s):  
Computed Tomography ◽  
Helical Ct ◽  
Helical Computed Tomography ◽  
Computed Tomography Dose Index ◽  
Dose Index

scholarly journals Comparison of Planer Dose Equilibrium and Computed Tomography Dose Index and Implications for Reported Patient Dose Information

2019 ◽  
Vol 09 (04) ◽  
pp. 43-51
Author(s):  
Ahmad Albngali ◽  
Joshua Deslongchamps ◽  
James Blackwell ◽  
Andy Shearer ◽  
Brendan Tuohy ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Patient Dose ◽  
Dose Information ◽  
Computed Tomography Dose Index ◽  
Dose Index

scholarly journals Optimization of head computed tomography scan in a tertiary institution in Edo State, South-South Nigeria

2021 ◽  
Vol 8 (4) ◽  
pp. 225-230
Author(s):  
Chikezie Chukwuemeka Udo ◽  
Akintayo Daniel Omojola ◽  
Chukwuemeka Christian Nzotta
Keyword(s):  
Computed Tomography ◽  
Ct Scanner ◽  
Tertiary Institution ◽  
Dose Length Product ◽  
Volume Computed Tomography ◽  
The United Kingdom ◽  
Ct Protocol ◽  
Tube Current ◽  
Edo State ◽  
Computed Tomography Dose Index

Objective: The study is aimed at optimizing the existing CT protocol for head scans in a Specialist Teaching Hospital in Edo State with a 16-slice Siemens Somatom Emotion scanner. Also, the study determined the volume computed tomography dose index (CTDIvol) and Dose Length Product (DLP) from the patient's dose profiles. The results from this study were compared with relevant studies. Materials and Methods: The scanner was used to acquire head CT of 160 patients retrospectively. Also, a locally designed head phantom was used to simulate individual patients using a similar protocol by changing the tube current (mA) and total scan width (TSW) only from the existing protocol. Results: Percentage dose reduction (PDR) for the CTDIvol and DLP ranged 42.00-46.80% and 37.13-43.54% respectively. The optimized CTDIvol and DLP were lowest compared to studies in the United Kingdom (UK), Italy, India, Ireland, Sudan, Nigeria, European Commission (EC), United States of America (USA) and Japan. Only the DLP for India was lower than our optimized value. Conclusion: The need to understudy CT configuration is necessary, this will allow end-users to optimize certain parameters in the CT scanner, which will reduce the patient dose without compromising image quality

scholarly journals [OA162] Impact of scanner type and acquisition parameters on the accuracy of displayed computed tomography dose index

2018 ◽  
Vol 52 ◽  
pp. 62
Author(s):  
Luca Leandro Vigna ◽  
Barbara Cannillo ◽  
Roberta Matheoud ◽  
Antonella Ostan ◽  
Clizia Dionisi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Dose Index ◽  
Dose Index

Monte Carlo Simulation of the Computed Tomography Dose Index (CTDI) Using GATE

2020 ◽  
Vol 17 (6) ◽  
pp. 900-907
Author(s):  
M. Mkimel ◽  
R. El Baydaoui ◽  
M. R. Mesradi ◽  
Z. Tahiri ◽  
K. Talasmat ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Computed Tomography Dose Index ◽  
Dose Index
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