_____________________________________________________________________________________________________ *Corresponding author: Email: huche2006@yahoo.com; British Journal of Medicine & Medical Research 9(9): 1-15, 2015, Article no.BJMMR.15123 ISSN: 2231-0614 SCIENCEDOMAIN international www.sciencedomain.org Increasing Radiation Doses from Computed Tomography versus Diagnostic Reference Levels: How Compliance Are We? Hyacienth Uche Chiegwu 1* , Enweani Ifeoma Bessie 2 , Nzotta Christian Chukwuemeka 1 , Ogbu Sylvester Osita Ike 3 , Onyema Andrew Emejulu 1 and Ugwuanyi Daniel Chimuanya 1 1 Department of Radiography and Radiological Sciences, Nnamdi Azikiwe University, Nnewi Campus, Nnewi, Anambra State, Nigeria. 2 Department of Medical Laboratory Sciences, Nnamdi Azikiwe University, Nnewi Campus, Nnewi, Anambra State, Nigeria. 3 Department of Medical Radiography, University of Nigeria, Enugu Campus, Enugu State, Nigeria. Authors’ contributions This work was carried out in collaboration between all authors. Author HUC conceptualized and designed the study, carried out the data collection and wrote the first draft of the manuscript. Author EIB wrote the protocol and audited the first draft of the manuscript. Author OSOI performed the statistical analysis. Author NCC sourced the TLD chips and provided some other instruments used for the study. Authors OAE and UDC managed the literature searches. All authors read and approved the final manuscript. Article Information DOI: 10.9734/BJMMR/2015/15123 Editor(s): (1) Franciszek Burdan , Experimental Teratology Unit, Human Anatomy Department, Medical University of Lublin, Poland AND Radiology Department, St. John’s Cancer Center, Poland. (2) Mahin Khatami, National Cancer Institute (ret.), The national Institutes of Health, Bethesda, MD, USA. (3) Oswin Grollmuss, Head of Department of Pediatric and Adult Resuscitation Congenital Heart of Centre Chirurgical Marie Lannelongue, University Paris XI, France. Reviewers: (1) Anonymous, USA. (2) Anonymous, Capital Medical University, China. (3) Anonymous, Sao Paulo State University, Brazil. (4) Anonymous, University of Helsinki, Finland. Complete Peer review History: http://sciencedomain.org/review-history/10184 Received 7 th November 2014 Accepted 4 th June 2015 Published 14 th July 2015 ABSTRACT Aim: To assess the radiation dose received in a clinical/real life setting by patients visiting selected radiological centres in Enugu, Enugu State, southeast of Nigeria for diagnostic computed tomography (CT) scans of the heads and thus assess compliance to the diagnostic Original Research Article