scholarly journals Radiation Dose from Computed Tomography Scans for Korean Pediatric and Adult Patients

2021 ◽  
Author(s):  
Tristan Won ◽  
Ae-Kyoung Lee ◽  
Hyung-do Choi ◽  
Choonsik Lee
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Adult Patients ◽  
Computed Tomography Scans

scholarly journals Precision of determining bone pose and marker position in the foot and lower leg from computed tomography scans: How low can we go in radiation dose?

2019 ◽  
Vol 69 ◽  
pp. 147-152 ◽  
Author(s):  
W. Schallig ◽  
J.C. van den Noort ◽  
R.P. Kleipool ◽  
J.G.G. Dobbe ◽  
M.M. van der Krogt ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Lower Leg ◽  
Marker Position ◽  
Computed Tomography Scans

scholarly journals Readjustment of abdominal computed tomography protocols in a university hospital: impact on radiation dose

2015 ◽  
Vol 48 (5) ◽  
pp. 292-297 ◽  
Author(s):  
Ricardo Francisco Tavares Romano ◽  
Priscila Silveira Salvadori ◽  
Lucas Rios Torres ◽  
Elisa Almeida Sathler Bretas ◽  
Daniel Bekhor ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Clinical Suspicion ◽  
University Hospital ◽  
Abdominal Ct ◽  
Abdominal Computed Tomography ◽  
Computed Tomography Scans ◽  
Group A ◽  
Group B ◽  
Tomography Scan

AbstractObjective:To assess the reduction of estimated radiation dose in abdominal computed tomography following the implementation of new scan protocols on the basis of clinical suspicion and of adjusted images acquisition parameters.Materials and Methods:Retrospective and prospective review of reports on radiation dose from abdominal CT scans performed three months before (group A – 551 studies) and three months after (group B – 788 studies) implementation of new scan protocols proposed as a function of clinical indications. Also, the images acquisition parameters were adjusted to reduce the radiation dose at each scan phase. The groups were compared for mean number of acquisition phases, mean CTDIvol per phase, mean DLP per phase, and mean DLP per scan.Results:A significant reduction was observed for group B as regards all the analyzed aspects, as follows: 33.9%, 25.0%, 27.0% and 52.5%, respectively for number of acquisition phases, CTDIvol per phase, DLP per phase and DLP per scan (p < 0.001).Conclusion:The rational use of abdominal computed tomography scan phases based on the clinical suspicion in conjunction with the adjusted images acquisition parameters allows for a 50% reduction in the radiation dose from abdominal computed tomography scans.

Radiation Dose and Image Quality in Adult Computed Tomography Scans

2018 ◽  
Vol 8 (2) ◽  
pp. 223-231
Author(s):  
Haytham Al Ewaidat ◽  
Xiaoming Zheng ◽  
Yousef Khader ◽  
Mostafa Abdelrahman Theeb ◽  
Mostafa Khaled Mustafa Alhasan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Radiation Dose ◽  
Computed Tomography Scans

scholarly journals Tomographical Findings in Adult Patients Undergoing Endoscopic Sinus Surgery Revision

2017 ◽  
Vol 22 (01) ◽  
pp. 073-080
Author(s):  
Jan Socher ◽  
Jonas Mello ◽  
Barbara Baltha
Keyword(s):  
Computed Tomography ◽  
Endoscopic Sinus Surgery ◽  
Middle Turbinate ◽  
Adult Patients ◽  
Sinus Surgery ◽  
Primary Surgery ◽  
Computed Tomography Scans ◽  
Revision Sinus Surgery ◽  
The City ◽  
Mucosal Thickening

Introduction Many patients undergoing functional endoscopic sinus surgery still have an uncontrolled clinical disease in the late post-operative period. Up to 11.4% of the patients will require a revision surgery. Findings such as the residual uncinated process and the lateralization of the middle turbinate were considered by some studies as being responsible for failure in the primary surgery. Objectives To describe the tomographical findings in adult patients undergoing revision endoscopic sinus surgery, the profile of those patients, and verify the mucosal thickening level of the paranasal sinus. Methods Data were collected from medical records and computed tomography reports of 28 patients undergoing revision sinus surgery on a private service in the city of Blumenau between 2007 and 2014. The score of Lund-Mackay was used to verify the mucosal thickening level. Results Among the 28 patients, 23 were reoperated once, 3 were reoperated twice, and 2 were reoperated 3 times. The most relevant findings were mucosal thickening of the maxillary sinus (89.28%), deviated septum (75%), thickening of the ethmoid (50%) and sphenoidal sinuses (39.28%), and pneumatization of the middle turbinate (39.28%). The average obtained in the Lund-Mackay score was 5.71, with most patients classified in the lower range of punctuation. Conclusion The analysis of the computed tomography scans showed persistent structures that may be responsible for the failure of the primary surgery. Computed tomography is a useful tool to plan the surgery and quantify the post-operative success.

scholarly journals Radiation dose levels in chest computed tomography scans of coronavirus disease 2019 pneumonia

Medicine ◽  
2021 ◽  
Vol 100 (31) ◽  
pp. e26692
Author(s):  
Yang Zhou ◽  
Yineng Zheng ◽  
Yun Wen ◽  
Xin Dai ◽  
Wengang Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Chest Computed Tomography ◽  
Computed Tomography Scans ◽  
Dose Levels

scholarly journals Prevalence of Protective Shielding Utilization for Radiation Dose Reduction in Adult Patients Undergoing Body Scanning Using Computed Tomography

2017 ◽  
Vol 31 (10) ◽  
pp. 985-990 ◽  
Author(s):  
Shoaib Safiullah ◽  
Roshan Patel ◽  
Brittany Uribe ◽  
Kyle Spradling ◽  
Chandana Lall ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Dose Reduction ◽  
Radiation Dose Reduction ◽  
Adult Patients ◽  
Body Scanning

scholarly journals Changes seen on computed tomography of the chest in mildly symptomatic adult patients with sickle cell disease

2016 ◽  
Vol 49 (4) ◽  
pp. 214-219 ◽  
Author(s):  
Ursula David Alves ◽  
Agnaldo José Lopes ◽  
Maria Christina Paixão Maioli ◽  
Andrea Ribeiro Soares ◽  
Pedro Lopes de Melo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sickle Cell Disease ◽  
Sickle Cell ◽  
Pulmonary Arteries ◽  
Group Versus ◽  
Adult Patients ◽  
Architectural Distortion ◽  
Cell Disease ◽  
Computed Tomography Scans ◽  
A Prospective Study

Abstract Objective: To describe and quantify the main changes seen on computed tomography of the chest in mildly symptomatic adult patients with sickle cell disease, as well as to evaluate the radiologist accuracy in determining the type of hemoglobinopathy. Materials and Methods: A prospective study involving 44 adult patients with sickle cell disease who underwent inspiration and expiration computed tomography of the chest. The frequency of tomography findings and the extent of involvement are reported. We also calculated radiologist accuracy in determining the type of hemoglobinopathy by analyzing the pulmonary alterations and morphology of the spleen. Results: The changes found on computed tomography scans, in descending order of frequency, were as follows: fibrotic opacities (81.8%); mosaic attenuation (56.8%); architectural distortion (31.8%); cardiomegaly (25.0%); lobar volume reduction (18.2%); and increased caliber of peripheral pulmonary arteries (9.1%). For most of the findings, the involvement was considered mild, five or fewer lung segments being affected. The accuracy in determining the type of hemoglobinopathy (HbSS group versus not HbSS group) was 72.7%. Conclusion: In adult patients with sickle cell disease, the main tomography findings reflect fibrotic changes. In addition, computed tomography can be helpful in differentiating among hemoglobinopathies.

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