top of page
Asian Institute of Research, Journal Publication, Journal Academics, Education Journal, Asian Institute
Asian Institute of Research, Journal Publication, Journal Academics, Education Journal, Asian Institute

Journal of Health and Medical Sciences

ISSN 2622-7258

Screen Shot 2018-08-12 at 1.24.09 AM.png
Screen Shot 2018-08-12 at 1.24.02 AM.png
Screen Shot 2018-08-12 at 1.23.57 AM.png
Screen Shot 2018-08-12 at 1.23.52 AM.png
open access

Published: 19 August 2022

Radiation Dose to Breast During Head Computed Tomography Scan Among Nigerian Population: A Cross-Sectional Study

Chidimma Perpetua Ihefobi, Christian Chukwuemeka Nzotta, Michael Promise Ogolodom,
Ebube Mmelie Eze

Nnamdi Azikiwe University, Nigeria

journal of social and political sciences
pdf download

Download Full-Text Pdf



Pages: 36-42

Keywords: Computed Tomography, Dose, Radiation


Background: The extent of the dose received by the breast during head CT, needs quantification to effectively predict the risk of carcinoma and gene mutation. Objective: The study aimed to evaluate the radiation dose to the breast during a head CT scan in Enugu State. Methods: This cross-sectional study which involved 52 adults women selected purposively, described the radiation doses received by shielded and unshielded breasts during head CT examinations. The relationship between the anthropo-technical parameters Age, height, weight, BMI, breast circumferences, and distance from the External Auditory Meateus (EAM) to the TLD, kVp, mA, and the DLP was determined using Pearsons’ Correlation. Results: The mean of CTDIvol, DLP, and breast circumferences (left shielded and right unshielded) are 29.43±40.0mGy, 540.8±107.03mGy, and left shielded breast (4.71±2.45mGy) and right unshielded breast (5.0±2.32mGy). There were positive correlations but not statistically significance between breast absorbed dose and BMI (r =0.152, p= 0.291), linear distance from EAM to TLD (r= 0.032, p = 0.828) and mAs (r= 0.100, p = 0.492), while there was negative correlation but not statistically significance exist with subjects’ age (r= -0.112, p = 0.439). Conclusion: There was a significant difference in the amount of radiation doses received by shielded and unshielded breasts during head CT, with low radiation doses received by shielded breasts. Shielding of the breast greatly reduces the radiation dose received by the breast during head CT. Therefore, we recommend that shielding of the breasts during head CT should form a standard protocol in our setting.


  1. Abuzaid, M.M., Elshani, W., Hancef, C., Alyafei, S. (2017). Thyroid shield during brain CT scan: dose reduction and image quality evaluation. Imaging in medicine. 9(3)

  2. Beaconsfeld, T., Nicholson, R., Thornton, A., & Al-Kutoubi, A. (1998). Would thyroid and breast shielding be beneficial in CT of the head? Eur Radiol. 8: 664-7

  3. Brnic, Z., Vekic, B., Hebrang, A., & Anic, P. (2003) Efficacy of breast shielding during CT of the head. EurRadiol.13(11),2436 – 2440

  4. AdeJoh, T., & Nzotta, C. C. (2016). Head Computed Tomography: Dose output and relationship with anthropotechnical parameters. West African journal of Radiology. 23(2), 113-117.

  5. Yamane, T. (1967). Statistics: An Introductory Analysis. 2nd Ed. Harper and Rao, New York. p.886.

  6. Hohl,C., Muhlenbruch, G., Wildberger, J.E., Leidecker, C., Suss, C., Schmidt, T., Gunther, R.W., & Mahaken AH.(2006). Estimation of radiation exposure in low-dose multislice computed tomography of the heart and comparison with a calculation program. Eur Radiol. 16:1841–1846 DOI: 10.1007/s00330-005-0124-y 

  7. Parker, M.S., Kelleher, N.M., Hoots, J.A., Chung, J.K., Fatouros, P.P., Benedict, S.H. (2008). Absorbed radiation dose of the female breast during diagnostic multidetector chest CT and dose reduction with a tungsten-antimony composite breast: preliminary results. ClinRadiol. 63(3),278-288.

  8. Gunn, M.L., Kanal, K.M., Kolokythas, O., & Anzal, Y. (2009). Radiation dose to the thyroid gland and breast from mutidetector computed tomography of the cervical spine: does bismuth shielding with and without a cervical collar reduce dose? J Comput Assist Tomogr. 33(6),987 -990

bottom of page