Year :
2024
| Month :
May
| Volume :
18
| Issue :
5
| Page :
TC01 - TC04
Full Version
Comparison of Radiation Doses of Computed Tomography Brain and Pulmonary Angiography with International Commission on Radiological Protection Guidelines: A Descriptive Study
Published: May 1, 2024 | DOI: https://doi.org/10.7860/JCDR/2024/69156.19417
AF Fidha, George Arattu Alphy, Amita Digambar Dabholkar
1. Assistant Professor, Department of Medical Imaging Technology, Yenepoya School of Allied and Healthcare Professionals, Bangalore, Karnataka, India.
2. Assistant Professor, Department of Medical Imaging Technology, Yenepoya School of Allied Health Sciences, Mangaluru, Karnataka, India.
3. Assistant Professor, Department of Medical Imaging Technology, Yenepoya School of Allied Health Sciences, Mangaluru, Karnataka, India.
Correspondence Address :
Miss. Amita Digambar Dabholkar,
Assistant Professor, Department of Medical Imaging technology, Yenepoya School
of Allied Health Sciences, Yenepoya (Deemed to be University), Mangaluru-575018, Karnataka, India.
E-mail: dabholkaramita99@gmail.com
Abstract
Introduction: Computed Tomography Angiography (CTA) is useful for evaluating and diagnosing conditions related to blood vessels, such as aneurysms, stenosis (narrowing of vessels), vascular malformations, and blockages. It provides valuable information for planning and guiding interventions or surgeries. It is also important to measure patient doses during CTA operations to evaluate and optimise the technique and balance the benefits compared to radiation hazards.
Aim: To calculate the CT Dose Index (CTDI), Dose Length Product (DLP), and effective dose for CT brain angiography and CT pulmonary angiography, and also to compare whether the measured values are within the International Commission on Radiological Protection (ICRP) recommended levels.
Materials and Methods: A retrospective descriptive study was conducted in the Department of Radiodiagnosis at Yenepoya Medical College Hospital Mangaluru, Karnataka, India, from September 2022 to September 2023. A total of 52 data points were collected for CT brain and CT pulmonary angiography examinations, which were acquired before October 2022. Information on CTDI and DLP was collected, and the effective dose was calculated using the conversion factor. The values were then compared with the ICRP reference level. Descriptive statistics, mean, and standard deviation for continuous variables, and frequency and percentage for categorical variables were used.
Results: There was a significantly lower value of CTDI, DLP, and effective dose for CT brain angiography and CT pulmonary angiography compared to the ICRP recommended reference levels. The mean CTDI and DLP for CT brain angiography were 111.56 mGy and 1153.31 mGy·cm, and the mean CTDI and DLP for CT pulmonary angiography were 24.56 mGy and 713.74 mGy·cm, respectively. The mean effective dose for CT brain and CT pulmonary angiography was 2.46 mSv and 9.94 mSv, respectively.
Conclusion: The measured values were within the recommended values of ICRP regulations. It is recommended that CT brain angiography and CT pulmonary angiography examinations are safer for diagnostic purposes. Optimising scanning protocols, utilising low-dose techniques, and implementing dose monitoring and control are important clinical aspects. Compliance with the guidelines helps to enhance patient care and reduce the risk of radiation-related complications.
Keywords
Brain angiography, Computed tomography dose index, Dose-length-product, Effective dose
DOI: 10.7860/JCDR/2024/69156.19417
Date of Submission: Dec 18, 2023
Date of Peer Review: Feb 03, 2024
Date of Acceptance: Mar 12, 2024
Date of Publishing: May 01, 2024
AUTHOR DECLARATION:
• Financial or Other Competing Interests: None
• Was Ethics Committee Approval obtained for this study? Yes
• Was informed consent obtained from the subjects involved in the study? No
• For any images presented appropriate consent has been obtained from the subjects. NA
PLAGIARISM CHECKING METHODS:
• Plagiarism X-checker: Dec 18, 2023
• Manual Googling: Mar 05, 2024
• iThenticate Software: Mar 09, 2024 (12%)
ETYMOLOGY: Author Origin
EMENDATIONS: 7
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