Equivalent dose measurements from digital intra-and extra-oral imaging examinations

Norfariha Che Mohamed, Hapizah Nawawi, Mohd Yusmiaidil Putera Mohd Yusof, Khoo Kok Siong Kok Siong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The aims of this study are to estimate the equivalent dose to the skin, eyes and thyroid in intra-and extra-oral imaging examination and to compare the dose-area product (DAP) derived from the calculation method with Diagnostic Reference Levels (DRL) that has been provided by the Malaysian Ministry of Health (MOH). Dose equivalent is measured by placing Thermoluminescence Dosimeter (TLD-100H) in the anthropomorphic RANDO phantom. Exposure is performed using intra-oral X-ray machine ActeonSatelec X-Mind® and extra-oral X-ray machine InstrumentariumOP300®, and the value is compared to the equivalent dose of the International Commission on Radiological Protection (ICRP) dose limit. DAP value for both examinations was obtained by using formula and comparing them with the DRL from MOH. The average dose equivalent of intra-and extra-oral radiographic examination is lower than the ICRP dose limit. The doses derived from both examinations did not exceed the prescribed levels when compared with DRL. The doses calculated for intra-oral examination of molar maxillary, molar mandibular and interproximal (bitewing) was 0.880 mGy while periapical examination of the anterior maxillary and mandibular was 0.688 mGy and occlusal examination was 1.100 mGy. For the panoramic examination the dose was 0.011 mGy.m2 while lateral cephalometric examination was 0.0054 mGy.m2. The doses obtained from this study were within the dose limit and predetermined level. This shows that a patient receives the minimum dose for both dental radiographic examinations with the optimum level of safety which meets the ALARA concept.

Original languageEnglish
Pages (from-to)251-262
Number of pages12
JournalPertanika Journal of Science and Technology
Volume25
Issue numberS7
Publication statusPublished - 1 Jul 2017

Fingerprint

Oral Diagnosis
mouth
Health
image analysis
Imaging techniques
X rays
Thermoluminescence
Dosimeters
dosage
Cephalometry
X-Rays
Dosimetry
Skin
Health Status
Tooth
Thyroid Gland
Safety
dose
equivalent dose
ALARA (as low as reasonably achievable)

Keywords

  • Dental imaging
  • Diagnostic reference levels
  • Dose-area product
  • Equivalent dose

ASJC Scopus subject areas

  • Computer Science(all)
  • Chemical Engineering(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

Cite this

Equivalent dose measurements from digital intra-and extra-oral imaging examinations. / Mohamed, Norfariha Che; Nawawi, Hapizah; Yusof, Mohd Yusmiaidil Putera Mohd; Kok Siong, Khoo Kok Siong.

In: Pertanika Journal of Science and Technology, Vol. 25, No. S7, 01.07.2017, p. 251-262.

Research output: Contribution to journalArticle

Mohamed, Norfariha Che ; Nawawi, Hapizah ; Yusof, Mohd Yusmiaidil Putera Mohd ; Kok Siong, Khoo Kok Siong. / Equivalent dose measurements from digital intra-and extra-oral imaging examinations. In: Pertanika Journal of Science and Technology. 2017 ; Vol. 25, No. S7. pp. 251-262.
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