Abstract
We proposed a new method of performance evaluation for X-ray CT using visible scintillation light and examined its usefulness in this study. When we scanned a plastic scintillator disk in a gantry opening of the X-ray CT, we could observe visible scintillation light. The rotation of the light-emitting area of the disk corresponded to that of the X-ray tube. We were able to record the scintillation light by digital video camera. By analyzing the area of visible scintillation light, the rotation speed of the X-ray tube, angular spread of the X-ray beam, uniformity of the incident X-rays, and change in X-ray energy were measured. No other method is available to obtain the above parameters of X-ray CT during a single CT scan. In the measurements of the uniformity of incident X-rays and change of X-ray energy, our method showed good accuracy in detecting the attenuation caused by the couch between the X-ray tube and the plastic scintillator disc. The proposed method is inexpensive and easy-to-use. We conclude that the method is a useful tool for performance evaluation as well as a maintenance tool for X-ray CT.
| Original language | English |
|---|---|
| Pages (from-to) | 1429-1436 |
| Number of pages | 8 |
| Journal | Nippon Hoshasen Gijutsu Gakkai zasshi |
| Volume | 60 |
| Issue number | 10 |
| Publication status | Published - 2004 |
| Externally published | Yes |
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Performance evaluation of X-ray CT using visible scintillation light. / Kodama, Kiyoyuki; Hamada, Minoru; Suzuki, Tamotsu; Hashimoto, Masatoshi; Hanada, Takashi; Ide, Tatsuya; Maruyama, Koichi.
In: Nippon Hoshasen Gijutsu Gakkai zasshi, Vol. 60, No. 10, 2004, p. 1429-1436.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performance evaluation of X-ray CT using visible scintillation light
AU - Kodama, Kiyoyuki
AU - Hamada, Minoru
AU - Suzuki, Tamotsu
AU - Hashimoto, Masatoshi
AU - Hanada, Takashi
AU - Ide, Tatsuya
AU - Maruyama, Koichi
PY - 2004
Y1 - 2004
N2 - We proposed a new method of performance evaluation for X-ray CT using visible scintillation light and examined its usefulness in this study. When we scanned a plastic scintillator disk in a gantry opening of the X-ray CT, we could observe visible scintillation light. The rotation of the light-emitting area of the disk corresponded to that of the X-ray tube. We were able to record the scintillation light by digital video camera. By analyzing the area of visible scintillation light, the rotation speed of the X-ray tube, angular spread of the X-ray beam, uniformity of the incident X-rays, and change in X-ray energy were measured. No other method is available to obtain the above parameters of X-ray CT during a single CT scan. In the measurements of the uniformity of incident X-rays and change of X-ray energy, our method showed good accuracy in detecting the attenuation caused by the couch between the X-ray tube and the plastic scintillator disc. The proposed method is inexpensive and easy-to-use. We conclude that the method is a useful tool for performance evaluation as well as a maintenance tool for X-ray CT.
AB - We proposed a new method of performance evaluation for X-ray CT using visible scintillation light and examined its usefulness in this study. When we scanned a plastic scintillator disk in a gantry opening of the X-ray CT, we could observe visible scintillation light. The rotation of the light-emitting area of the disk corresponded to that of the X-ray tube. We were able to record the scintillation light by digital video camera. By analyzing the area of visible scintillation light, the rotation speed of the X-ray tube, angular spread of the X-ray beam, uniformity of the incident X-rays, and change in X-ray energy were measured. No other method is available to obtain the above parameters of X-ray CT during a single CT scan. In the measurements of the uniformity of incident X-rays and change of X-ray energy, our method showed good accuracy in detecting the attenuation caused by the couch between the X-ray tube and the plastic scintillator disc. The proposed method is inexpensive and easy-to-use. We conclude that the method is a useful tool for performance evaluation as well as a maintenance tool for X-ray CT.
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UR - http://www.scopus.com/inward/citedby.url?scp=16544368288&partnerID=8YFLogxK
M3 - Article
C2 - 15565012
AN - SCOPUS:16544368288
VL - 60
SP - 1429
EP - 1436
JO - Nippon Hoshasen Gijutsu Gakkai zasshi
JF - Nippon Hoshasen Gijutsu Gakkai zasshi
SN - 0369-4305
IS - 10
ER -