Submitted: 31 Oct 2020
Accepted: 09 Dec 2020
ePublished: 30 Dec 2020
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Dis Diagn. 2020;9(4): 144-147.
doi: 10.34172/ddj.2020.03
  Abstract View: 59
  PDF Download: 47

Original Article

Assessment of X-Ray Tube Technical Factors: Tube Voltage and Exposure Time in Erbil Medical Imaging Centers

Fatiheea F Hassan 1* ORCID logo

1 Department of Basic Sciences, College of Medicine, Hawler Medical University, Kurdistan Region, Erbil, Iraq.
*Correspondence to Fatiheea Fatihalla Hassan, Assistant Professor in Department of Basic Sciences, Biophysics Unit, College of Medicine, Hawler Medical University (HMU), Kurdistan Region, Erbil, Iraq. Tel: +964-7503148390; Email: fatiheea.fatihalla@ hmu.edu.krd


Background: An evaluation of certain radiographic factors affecting patient exposure during medical imaging was carried out. Factors considered included selection of tube kilovoltage and time exposure combination. An increase in X-ray tube voltage increases the amount of radiation coming out of the X-ray tube, as well as the amount of skin dose in the image. This study aimed to assess the possibility of reducing the voltage and exposure time in medical imaging centers. The study indeed intended to protect patients from the risk of developing cancer with excessive radiation dose.

Materials and Methods: This study was performed in Erbil hospitals, Iraq. NOMEX multimeter (Finland, PTW) was used to measure radiation dose (mGy), total voltage, current (mA), exposure time (s), and total filtration in 150 patients undergoing different X-ray examinations.

Results: The results showed that the highest output was obtained in the age group of 42-70 years (dose range: 52.43–19.46 mGy), followed by the age group of 50-70 years (dose range: 39.9–25.63 mGy) and the age group of 10–40 years (dose range: 30.35–10.55 mGy).

Conclusion: The high voltage (kVp) and high exposure time to be important factors to increase patient doses via increasing the exposure dose. Thus, optimization of exposure time and voltage is recommended for all cancer patients undergoing medical imaging with high voltage and long exposure time.

Keywords: X-ray output, Voltage (Kvp), Exposure time, Radiographic projection

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