access icon openaccess Study on the performance of X-ray machines used in K-fluorescent devices

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 12/10/2018, Accepted 09/01/2019, Published 25/03/2019

Since Roentgen discovered X-rays, X-rays have been widely used in medical diagnosis and industrial non-destructive testing. With the improvement of the performance of aviation technology and instrumentation, higher requirements have been set for the calibration of detectors. X-ray machine performance is very important for calibration. Tube voltage, tube current, and inherent filtration are important parameters of the X-ray machine and directly affect the image imaging quality and radiation dose. Here, the voltage performance of the X-ray machine was measured using HPGe detector. Measure the tube voltage of the X-ray machine using the end of the spectrum method, it is shown that the performance of the X-ray machine shows the tube voltage within ±2%. Measurement of the linearity of the X-ray tube current and current stability using the PTW30013 ionisation chamber. The relative deviation of the actual measured tube current is 0.08%. The inherent filtration of the X-ray machine was measured by the half-value layer method, and the inherent filtration was 0.058 mm Al. The inherent filtration of the K-fluorescent device was measured to be 1.487 mm Al.

Inspec keywords: dosimetry; ionisation chambers; calibration; germanium radiation detectors; diagnostic radiography; X-ray tubes

Other keywords: inherent filtration; X-ray tube current; tube voltage; X-ray machine performance; medical diagnosis; HPGe detector; K-fluorescent devices; PTW30013 ionisation chamber

Subjects: X-rays and particle beams (medical uses); X-ray techniques: radiography and computed tomography (biomedical imaging/measurement); Ionisation chambers; X-ray and gamma-ray equipment; Radiation dosimetry in medical physics; Patient diagnostic methods and instrumentation; Radiation protection and dosimetry; X-ray, gamma-ray instruments and techniques; Particle and radiation detection and measurement

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