Design of Low-Pass Filter of X-Ray Energy to Improve the Quality of Medical Imaging
محورهای موضوعی : مهندسی هوشمند برقSasan Soudi 1 , Bahareh Khaksar Jalali 2 , Hossein Eshghifard 3
1 - Department of Medical Engineering, Faculty of Health and Medical Engineering, Tehran Medical Sciences Islamic Azad University, Tehran, Iran
2 - Laser and Biophotonics in Biotechnologies Research Center, Isfahan (Khorasgan) branch, Islamic Azad University, Isfahan, Iran
3 - Independent Researcher, Tehran, Iran
کلید واژه: Artifact, Beam hardening, Medical imaging, Monte Carlo N-particle radiation transport computer code (MCNP4C), X-ray filters,
چکیده مقاله :
Using narrow-spectrum energy bandwidth can be effective on image quality. Because while increasing the possibility of processing the attenuation coefficient, it also provides a reduction in the beam hardening artifact. For this purpose, in this paper, energy absorption filters are used by planning absorption and attenuation curves and sudden changes in attenuation in the interaction of the beam on the edges, as well as considering the operating conditions of existing imaging devices and the best energy required for imaging a specific part of the body. Then, their images were compared with the recorded images without filters and were approved by clinical experts. The samples, on the other hand, were designed with Monte Carlo N-particle radiation transport computer code (MCNP4C), which showed an acceptable agreement with the computational cases.
