Integrated dose sensing in Flat Detectors allows a during pulse control of the X-ray illumination without the need for external dose sensing devices. Standard designs of Flat Detectors do not allow during pulse dose sensing since the information is collected from the pixels only in the read-out phase after the X-ray illumination. This paper introduces a special detector plate design for obtaining dose sensing information directly from the X-ray detector while the X-ray pulse is being applied. This dose sensing information is read at a lower spatial resolution than the actual X-ray image but with a sub-millisecond temporal resolution. The dose sensing operates without any additional radiation burden on the patient and without attenuation of the image information. Experimental results from a small area (4x4 cm(2)) detector are presented, including an analysis of noise, linearity and cross-talk.
Flat detector with integrated dose sensing / M., Overdick; R. A., Ford; A. R., Franklin; Nascetti, Augusto; M. J., Powell; W., Rutten; M., Simon. - 5030:(2003), pp. 246-255. (Intervento presentato al convegno Medical Imaging 2003 Conference tenutosi a SAN DIEGO, CA nel FEB 17-20, 2003) [10.1117/12.479997].
Flat detector with integrated dose sensing
NASCETTI, Augusto;
2003
Abstract
Integrated dose sensing in Flat Detectors allows a during pulse control of the X-ray illumination without the need for external dose sensing devices. Standard designs of Flat Detectors do not allow during pulse dose sensing since the information is collected from the pixels only in the read-out phase after the X-ray illumination. This paper introduces a special detector plate design for obtaining dose sensing information directly from the X-ray detector while the X-ray pulse is being applied. This dose sensing information is read at a lower spatial resolution than the actual X-ray image but with a sub-millisecond temporal resolution. The dose sensing operates without any additional radiation burden on the patient and without attenuation of the image information. Experimental results from a small area (4x4 cm(2)) detector are presented, including an analysis of noise, linearity and cross-talk.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
