CFP last date
20 October 2026
Call for Paper
November Edition
IJCA solicits high quality original research papers for the upcoming November edition of the journal. The last date of research paper submission is 20 October 2026

Submit your paper
Know more
The week's pick
Responsive image
Contextual Sentiment Analysis of Airbnb Customer Reviews in Albania: An Investigation of BERT-based Classification

Blerina Zanaj Serxhio Kurti Elma Zanaj
Random Articles
Reseach Article

Derivation of Dose Conversion Factors by Measurement of Patients’ Organ Size in Computed Tomography Machine

by Oladotun A. Ojo, Matilda A. Ojo, Aishatu Omoragbon
journal cover thumbnail

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 187 - Number 140
Year of Publication: 2026
Authors: Oladotun A. Ojo, Matilda A. Ojo, Aishatu Omoragbon
10.5120/ijca1c8ea1998f8d

Oladotun A. Ojo, Matilda A. Ojo, Aishatu Omoragbon . Derivation of Dose Conversion Factors by Measurement of Patients’ Organ Size in Computed Tomography Machine. International Journal of Computer Applications. 187, 140 ( Sep 2026), 45-50. DOI=10.5120/ijca1c8ea1998f8d

@article{ 10.5120/ijca1c8ea1998f8d,
author = { Oladotun A. Ojo, Matilda A. Ojo, Aishatu Omoragbon },
title = { Derivation of Dose Conversion Factors by Measurement of Patients’ Organ Size in Computed Tomography Machine },
journal = { International Journal of Computer Applications },
issue_date = { Sep 2026 },
volume = { 187 },
number = { 140 },
month = { Sep },
year = { 2026 },
issn = { 0975-8887 },
pages = { 45-50 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume187/number140/derivation-of-dose-conversion-factors-by-measurement-of-patients-organ-size-in-computed-tomography-machine/ },
doi = { 10.5120/ijca1c8ea1998f8d },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2026-09-19T02:57:08.802216+05:30
%A Oladotun A. Ojo
%A Matilda A. Ojo
%A Aishatu Omoragbon
%T Derivation of Dose Conversion Factors by Measurement of Patients’ Organ Size in Computed Tomography Machine
%J International Journal of Computer Applications
%@ 0975-8887
%V 187
%N 140
%P 45-50
%D 2026
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Diagnostic radiology requires an advance form of dosimetry, for its reliable use during exposures in Computed Tomography. Samples of some patient exposure data on Abdominopelvic region of the body was collected from a hospital for use. The organ length or dimension for the Anterior Posterior (AP), Lateral (LAT), Patient Weight and Computed Tomography Dose Index volume (CTDIvol), makes up the data used. The product of the conversion factor f_size^16 or f_size^32 , based on the patient, and the CTDIvol, gives the Size Specific Dose Estimate (SSDE). The CTDIvol mean was 8.85mGy, range 4.02 mGy – 13.68 mGy. AP mean was 5.46 cm, range 1.86 cm – 15.4 cm. LAT mean was 10.46 cm, range 3.3 cm – 18.97 cm. f_size^32 (AP) mean was 1.83, range 0.62 – 5.16. f_size^32 (LAT) mean was 3.47, range 1.09 – 6.28. SSDE (AP) mean was 15.88 mGy, range 5.40 mGy – 50.80 mGy. SSDE (LAT) mean was 30.94 mGy, range 7.63 mGy – 64.03 mGy and Patient Weight mean was 80.6 kg, range 64 kg – 97 kg. The SSDEs (AP or LAT), was seen to vary with the lengths or dimensions of the patients. The amount of absorbed dose on exposure was more for greater lengths. Therefore, there is a need to estimate the dosage before exposure is done for a patient, to minimize any excess of usage of radiation, that can cause an unwanted side effect.

References
  1. International Atomic Energy Agency (IAEA), Dose reduction in CT while maintaining diagnostic confidence: a feasibility / demonstration study, IAEA – TECDOC-1621, 2009, pp. 1 – 5.
  2. International Atomic Energy Agency (IAEA))., Status of Computed tomography: dosimetry for wide cone beam scanners, 2011, IAEA – Human Health Reports No. 5, pp. 1 – 3.
  3. Goldman, L.W., Principles of CT: radiation dose and image quality, J Nucl Med Technol, vol. 35, 2007, pp. 213 – 225.
  4. Castellano, I., Geleijns, J., Computed tomography, in physics for medical imaging applications, edited by Lemoigne, Y., Caner, A., Ranal, G., Springer, 2007, pp. 1 – 2.
  5. Seram, E., Computed tomography: physical principles, clinical application and quality control, W.B. Saunders company, 2001, pp. 1 – 11.
  6. Linton, O. W., Mettler, F.A.Jr., National conference on dose reduction in CT, with an emphasis an emphasis on pediatric patients. AJR Am J Roentgenol, vol. 181, 2003, pp. 321 – 329.
  7. Mettler, F. A., Jr., Wiest, P. W., Locken, J.A., Kelsey, C.A., CT scanning: Patterns of use and dose, J Radiol Prot vol. 20, 2000, pp. 353 – 359.
  8. CDC, ALARA – As Low As Reasonably Achievable [Internet], Centers for Disease control and prevention, 2015 [ cited 2019 Apr 29], available from: https: //www.cdc.gov/nceh/radiation/alara.html.
  9. Rajaraman, V., Ponnusamy, M., Halanaik, D., Size specific dose estimate (SSDE) for estimating patient dose from CT use in myocardial perfusion SPECT / CT, Asia Ocean J. Nucl. Med. Biol., vol. 8(1), 2020, pp. 58 – 63, doi: 10.22038 / aojnmb.2019.40863.1276.
  10. Abuhaimed, A., Dosimetry of CT Advanced Technology, 2017, pp. 34 – 35, The National Center for Applied Physics, KACST, Riyadh, Saudi Arabia.
  11. Shope, T., Gagne, R., Johnson, G.A., A method for describing the doses delivered by transmission x – ray computed tomography, Med Phys., vol.8, 1981, pp. 481 – 495.
  12. Dixon, R.L., A new look at CT dose measurement: Beyond CTDI. Med Phys., vol. 30(1), 2003, pp. 1272 – 1280.
  13. Boone, J.M., The trouble with CTDI100, Med Phys. Vol. 34(4), 2007, pp. 1364 – 1371.
  14. McCollough, C. H., CT dose: how to measure, how to reduce, Health Phys, vol 95(5), 2008, pp. 508 – 517.
  15. Mc – Nitt – Gray, M.F., AAPM / RSNA Physics Tutorial for Residents: Topics in CT, Radiation dose in CT, Radiographics, vol. 22(6), 2002, pp. 1541 – 1553. Review.
  16. American Association of Physicists in Medicine (AAPM), The measurement, Reporting and Management of Radiation Dose in CT (Report #96), 2008, AAPM Task Group 23 of the Diagnostic Imaging Council CT Committee, College Park, MD, pp. 1 – 10.
  17. International Electrotechnical Commission (IEC), Medical Electrical Equipment, Part 2 – 44: Particular requirements for the safe of x – ray equipment for computed tomography. IEC publication No 60601 – 2 – 44, 2002, Ed.2.1, International Electrotechnical Commission (IEC) Central Office: Geneva Switzerland, pp. 1 – 3.
  18. America Association of Physicists in Medicine (AAPM), Size Specific Dose Estimate (SSDE) in Pediatric and Adult Body CT Examinations. AAPM Report No. 204, American Association of Physicists in Medicine (AAPM);2011, pp. 5 – 6.
  19. McCollough, C. H., Leng, S., Yu, L., Boone, J. M., McNitt - Gray, M. F., CT dose index and patient dose: they are not the same thing, Radiology, vol. 259, 2011, pp. 259 – 316 (Editorial).
  20. Seibert, J.A., Boone, J.M., Wootton – Gorges, S.L., Lamba, R., Dose is not always what it seems: Where very misleading values can result from volume CT dose index and dose length product, American College of Radiology, vol. 11 no 3., 2014, pp.233.
Index Terms

Computer Science
Information Sciences

Keywords

Dosimetry exposure estimate organ dimension absorbed dose radiation

Powered by PhDFocusTM