TY - JOUR
T1 - An evaluation of the influence of body mass index on radiation dose and image quality in CT pulmonary angiography
AU - Pradhan, Abhimanyu
AU - Kadavigere, Rajagopal
AU - Sukumar, Suresh
AU - Dkhar, Winniecia
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to The Brazilian Society of Biomedical Engineering 2025.
PY - 2025/6
Y1 - 2025/6
N2 - Purpose: Computed tomography angiography (CTA) is a non-invasive procedure to evaluate vascular anomalies. However, the high radiation dose related to the examination is a concern due to its associated cancer risk. Therefore, this study aims to investigate the effect of low tube voltage CT pulmonary angiography (CTPA) on radiation dose and image quality based on body mass index. Methods: Eighty patients were included in this study, where an initial 20 patients were scanned with standard dose protocol, irrespective of BMI. The remaining 60 patients were equally allocated to BMI-based protocol, where high and obese BMI was allocated to 120 kVp protocol, normal BMI to 100 kVp protocol, and low BMI to 80 kVp protocol. Dose data and image quality data were collected after the scan. Results: The result showed a 60% reduction in radiation dose, a 61% increase in vessel attenuation for the 80 kVp protocol, and an improved qualitative image score. Conclusion: In conclusion, tailoring the tube voltage with BMI can be used for CTPA while achieving significant dose reduction without compromising image quality.
AB - Purpose: Computed tomography angiography (CTA) is a non-invasive procedure to evaluate vascular anomalies. However, the high radiation dose related to the examination is a concern due to its associated cancer risk. Therefore, this study aims to investigate the effect of low tube voltage CT pulmonary angiography (CTPA) on radiation dose and image quality based on body mass index. Methods: Eighty patients were included in this study, where an initial 20 patients were scanned with standard dose protocol, irrespective of BMI. The remaining 60 patients were equally allocated to BMI-based protocol, where high and obese BMI was allocated to 120 kVp protocol, normal BMI to 100 kVp protocol, and low BMI to 80 kVp protocol. Dose data and image quality data were collected after the scan. Results: The result showed a 60% reduction in radiation dose, a 61% increase in vessel attenuation for the 80 kVp protocol, and an improved qualitative image score. Conclusion: In conclusion, tailoring the tube voltage with BMI can be used for CTPA while achieving significant dose reduction without compromising image quality.
UR - https://www.scopus.com/pages/publications/105005170670
UR - https://www.scopus.com/pages/publications/105005170670#tab=citedBy
U2 - 10.1007/s42600-025-00414-6
DO - 10.1007/s42600-025-00414-6
M3 - Article
AN - SCOPUS:105005170670
SN - 2446-4732
VL - 41
JO - Research on Biomedical Engineering
JF - Research on Biomedical Engineering
IS - 2
M1 - 35
ER -
