Abstract
We propose determining the entrance surface air kerma (ESAK) from the kerma area product (P KA) in digital radiology. ESAK values were derived from the X-ray tube outputs and patient exposure factors across five X-ray departments. Using linear regression between ESAK and P KA values, the slope and intercept coefficients were determined for each X-ray equipment and procedure. The method was examined using the data collected from patients who underwent chest PA/LAT, abdomen, pelvic AP, and lumbar spine AP/LAT X-ray examinations. The results showed a highly significant correlation between ESAK and P KA values and correlation coefficients, ranging from 0.77 to 1 with P-value < 0.001 in most studies. This method can be employed by incorporating dose data and related parameters into the X-ray device's software, similar to other dose-displayed information. The online determination of ESAK from P KA could help with quality assurance and patient dose management in digital radiology.
Original language | English |
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Pages (from-to) | 1055-1061 |
Number of pages | 7 |
Journal | Physical and Engineering Sciences in Medicine |
Volume | 45 |
Issue number | 4 |
DOIs | |
Publication status | Published - Dec 2022 |
Externally published | Yes |
Keywords
- Digital Imaging and Communications in Medicine (DICOM)
- Digital radiology
- Dose display
- Patient dose
- Radiation measurements
- Radiography
- Humans
- Radiographic Image Enhancement/methods
- Radiology
- Radiation Dosage
- Fluoroscopy/methods
ASJC Scopus subject areas
- Biotechnology
- Radiological and Ultrasound Technology
- Biophysics
- Biomedical Engineering
- Instrumentation
- Radiology Nuclear Medicine and imaging