Title :
Application of gallium arsenide detectors in digital mammography apparatus
Author :
Nam, I. ; Lelekov, M. ; Mokeev, D.
Author_Institution :
Tomsk Polytech. Univ., Russia
fDate :
26 June-2 July 2005
Abstract :
A success in early breast cancer diagnostic depends on technical characteristics of detecting module. The most important is detector resolution. In this paper we represent quantum-sensitive detectors of X-rays based on GaAs for digital mammography systems. Electron/hole pairs created by radiation, which interact with the GaAs detectors, result current pulse at the detector output and specialist can see image immediately. Progress in development and investigation of a semiconductor material capable to provide reliable registration of single quanta of roentgen radiation. It is supposed to reduce patient radiation doze. At the same time, the system delivers high-quality images with resolution, contrast and clarity equal to film X-rays, or better. Main advantages which can be achieved by using these detectors are analyzed.
Keywords :
III-V semiconductors; X-ray detection; X-ray imaging; biomedical imaging; cancer; electron-hole recombination; gallium arsenide; image resolution; mammography; GaAs; GaAs detectors; X-rays; breast cancer diagnosis; detector resolution; digital mammography apparatus; electron-hole pairs; gallium arsenide detectors; image clarity; image contrast; image resolution; patient radiation doze; quantum-sensitive detectors; roentgen radiation; semiconductor material; Breast cancer; Cancer detection; Charge carrier processes; Gallium arsenide; Mammography; Radiation detectors; Semiconductor materials; Semiconductor radiation detectors; X-ray detection; X-ray detectors;
Conference_Titel :
Science and Technology, 2005. KORUS 2005. Proceedings. The 9th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8943-3
DOI :
10.1109/KORUS.2005.1507700