Evaluation of Computed Tomography doses in three medical diagnostic centres in Kano

Emmanuel Peter Anzaku, Tijjani Saleh Bichi, Turado Surajo Abubakar, Sani Garba Durumin Iya, Mustapha Hikima Shuaibu

Abstract


Computed tomography (CT), is an X-ray procedure that generates high quality cross-sectional images of the body, and by comparison to other radiological diagnosis, the use of CT in medical diagnosis delivers radiation doses to patients that are higher than those from other radiological procedures. Lack of optimized protocols could be an additional source of increased dose in developing countries. The aim of this study is to conduct radiation doses survey for head, chest and abdomen CT examinations of patients in three selected CT Diagnostics centers in Kano city. Detailed were obtained for 144 CT examinations for adults patients only. The results from the three Diagnostics centers (hospitals) were compared within each other as well as with the IAEA guidance level for this particular investigation.  Survey of radiation doses were carried out by calculating Volume dose index (CTDIvol), and dose length product (DLP) using the SPSS software program. The study showed that the mean DLP of the one Diagnostics centers (hospital) is 1522.6 mGy.cm which is far much higher than the two other diagnostic centers Mohammed Abdullahi Wase which stands at 661.0 mGy.cm, Providian medical diagnostic center which stand at1121.3 mGy.cm as well as higher than the IAEA level which is 527 mGy.cm.

The study showed that the mean CTDIvol for patients in AKTH is 38.6 mGy which again is higher than the two other diagnostic centers Mohammed Addullahi Wase which is 9.5 mGy, Providian medical diagnostic center is 9.6 mGy though, it is less than the IAEA level which is 47.0 mGy.

This study showed that there is an urgent need for optimizing patient doses in Kano city CT examinations. This can be ensured by providing training and retraining for workers and conducting quality control measurements and preventive maintenance regularly so as to detect any unnecessary outflow of ionization radiation early enough before they negatively affect the image which may necessitate re-imaging and then increase patients’ dose.


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References


American Association of Physicist in Medicine Report No 96(2008). Measurement, Reporting and Management of Radiation Dose in CT produced by task group 23. Available at:

http://www.aapm/pubs/reports/rpt96

Australian Radiation Protection (2008). CT Radiation Dose Optimization Program

Abdulkadir, M. K., Cyril standoff and Francis Hasford (2016). Determination of Computed Tomography Diagnostic Reference Level in North Central Nigeria

Abdullah, A. (2009) Establishing Dose Reference Level for CT Examination in Malaysia.

Thesis submitted in partial fulfillment of the requirement for Masters of Science Degree University of Sains Malaysia. Available at http://www.eprints.usm.my

Ali, M.H. (2005) Trends in CT Abdominal Doses In Malaysian Practices. Research thesis Submitted as part of the requirements for the award of the degree of doctor of Health Sciences in the University of Sidney. Available at http://www.ses.library.usyd.edu.au

American Association of Physicists in Medicine website.

aapm.org/pubs/CTProtocols/ documents/ NotificationsAlertsSlides. April 16, 2014. Accessed September 2, 2015

American College of Radiology website. Dose index registry. www.acr.org/Quality-Safety/ National-Radiology-Data-Registry/Dose-Index- Registry. Accessed August 21, 2015

American Association of Physicists in Medicine website. The Alliance for Quality Computed Tomography: available protocols. www.aapm.org/pubs/CTProtocols/. Accessed September 2, 2015

Bourguignon, M.H (2009). Refresher Course 7medical Application Of Diagnostic Reference Levels in Medical practice,2-6.

Brenner, D.J.,& Hall, E.J. (2007) Computed Tomography – An Increasing Source Of Radiation Exposure. The New England journal of medicine 357(22), 2277-2284. Available at :

http://doi.org/10.1056/NEJMra072149

Dogo, D., T. Yawa, A. W Hassan and B Tahir, (2000). Pattern of Abdominal Trauma in North Eastern Nigeria

European Commission (1999). Guidance on Diagnostic Reference Levels (DRLS) for medical Exposures. Radiation protection, 5, 1-26. Retrieved from http://scolar.google.com

Erondu, O. F., Okoro C.R., Aniemeke, J.I.& Ugwu A. C. (2011). Pattern of CT Referrals Among Physiscians In The South South Region Of Nigeria . American journal of scientific and industrial research, 2(4):482-487

European guidelines (2014). Quality criteria for computed tomography.

Elameen,S.E.A(2010). Techniques and Radiation Doses in CT Examination Of Adult Patients. Master’s thesis submitted to the department of Medical Physics , University of Sudan.

European Union (2014). Radiation protection no 180 Diagnostic Reference Levels in Thirty Six European Countries, 73.

European Commission (1996). Guidelines on Quality Criteria for Diagnostic Radiographic Images. EUR16261EN. Available at: http://www.bookshop.europa.eu

Foley, S. J., McEntee, M., & Rainford L. (2012. Establishment of CT Diagnostic Reference Levels in Ireland . The British Journal of Radiology, 85(1018), 1390-1397. Available at :

http://doi.org/10.1259/bjr/15839549

GE Medical System (2001). Dose in Computed Tomography Basics, Challenges and Solutions. Technical Report,71113-BE france. Available at: http://www.gemedicalsystemseurope.com

Google Map (2015) Map of Kano State available at : http://www.maps.google.com

Garba I (2014). Computer Tomography Dose index for head CT in Northern Nigeria Hidjat, N., Wolf, M., Nunnemann, A., liersch, p., Gebauer, B., & Schro, R. J. (1999). Medical Physics Survey Of Conventional and Spiral CT doses 1 index Terms,395-401

IAEA (2007). Dosimetry in Diagnostic Radiology an International Code of Practice. Technical Report Series no 457 International Atomic Energy Agency available at:

http://www.pub,iaea,org

IAEA (2011) Radiation Protection and Safety of Radiation Source: International Basic Safety Standards. General safety requirements part 3 NoGSR part 3 (interim) available at

http://www.pub.iaea.org./p153 interim web.

ICRP (1991). Publication 60, 1990 Recommendation of the International Commission on Radiological Protection. Annuals, 21:1-3

IAEA (2011) Status of CT Dosimetry for wide cone beam scanners, International Atomic Energy Agency

IAEA TECDOC (2009). Dose Reduction in CT While Maintaining Diagnostic Confidence: A feasibility/ demonstration study, Radiation Safety and Monitoring Section IAEA Vienna international centre, 1400 vienna Austria. Available at: http://www.pub,iaea,org/mtcd

Lewis, M. A. & Edyvean, S. (2005). Patient Dose Reduction in CT. The British journal of Radiology, 78: 880-883

Lifeng yu, Xin Liu, Shau Leng, James M kofler , Juan C Ramirez Giraldo , mingliang Qu, Jodie christner , joel g feltcher and Cynthia H McCollough (2009). Radiation dose reduction in computed tomography: Techniques and future perspective.

Mundi, A., Hammed, S., Dlama, J., Abdul-, A., Peter, E., Itopa, R., & Goriya, K. (2015).

Diagnostic reference level for adult brain computed tomography scans: A case study of a Tertiary Health Care Centre in Nigeria, 14(1), 66-75. Available at: http://doi.org/10.9790/0853-14176675

M. K. A Karim, S. Hashim, A Sabarudin, D.A. Bradley &N.A. Bahruddin (2016). Evaluating organ dose and radiation risk of routine ct examination in Johor, Malaysia. Available http://www.eprints.usm.my

Morin, R. L., Gerber, T. C., & McCollough (2003). Radiation dose in computed tomography of the Heart. circulation, 107:917-922 available at http://www.circ.ahajournals.org/cgi/content/full/107/6/917

Luxembourg (2001). Radiation protection 109: guidelines on diagnostic reference levels for medical exposure. Office for official publications of the European community, on euro web server: http://europa.eu.int

Punch, K. F. (2006). Developing Effective Research Proposal. 2nd ed. London: sage Publications ltd

Shrimpton, PC, Hillier MC, M. S. & G.S (2014) Public health England –doses from Computed Tomography (CT) Examinations In The UK 2011 Review Seeram, C,(2009) physical principles, clinical applications and quality control. 3rd Ed. Westline industrial drive st Louis, Missouri: sounders Elsevier.

Tongco, D. C. (2007) purposive sampling as a tool for informant selection. A journal of Ethnobatany Research And Applications 5:147-158

Van der Molen, A. J., Schilham, A., Stoop, P., Prokop, M., & Geleijns, J (2013). A national Survey on radiation dose in CT in the Netherlands. Insights into imaging, 4(3), 383-390.

Available at: http://doi.org/10.9790/0853-14176675

Willis, J. (2004). Data Analysis and presentation skills: An Introduction for the Life and medical sciences. West Sussex: John Wiley and Sons’ Ltd

Wall, B. F. (2000) implementation of diagnostic reference levels for x-ray examinations in the

UK b.f. Wall National Radiological Protection Board, Chilton, Didcot, United Kingdom

Zarb F., McEntee, M. & Rainford L. (2012). Maltese ct doses for commonly performed examinations demonstrate alignment with published DRLs across Europe. Radiation protection dosimetry, 150(2), 198-206. Available at http://doi.org/10.1093/rpd/ncr393


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