A method for the inter-calibration of a matrix of sensors

被引：10
|
作者：
Donetti, M
Garelli, E
Marchetto, F
Boriano, A
Bourhaleb, F
Cirio, R
Cornelius, I
Giordanengo, S
La Rosa, A
Nastasi, U
Peroni, C
机构：
[1] Fdn CNAO, I-20123 Milan, Italy
[2] Ist Nazl Fis Nucl, I-10125 Turin, Italy
[3] ASP, Turin, Italy
[4] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy
[5] Fdn TERA, I-28100 Novara, Italy
[6] AO Giovanni AS, I-10123 Turin, Italy
来源：
PHYSICS IN MEDICINE AND BIOLOGY | 2006年 / 51卷 / 03期
关键词：
D O I：
10.1088/0031-9155/51/3/002
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We present a quick and easy method for the calibration of a matrix of sensors. The algorithm is based on a three-step irradiation procedure which relies only on the constancy of the delivered fluence at each step. With this method the gain of each sensor is derived relative to a reference detector. The algorithm has been applied to a matrix of (32 x 32) ionization chambers. After the calibration coefficients have been applied, by comparing the response of the matrix of chambers to a reference detector over a large field, we determined that the fluence measurement of individual chambers is better than 0.7%. The algorithm solves the cumbersome problem of the relative gain calibration of a matrix of a large number of sensors.
引用
收藏
页码：485 / 495
页数：11
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