Schulz R J, Verhey L J, Huq M S, Venkataramanan N
Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT.
Phys Med Biol. 1992 Apr;37(4):947-53. doi: 10.1088/0031-9155/37/4/009.
The absorbed dose to water from a 160 MeV proton beam as determined by a flexible, temperature regulated, sealed glass core, water calorimeter was compared to that determined from ionization chambers used in accordance with AAPM Report 16. The ratios of these doses as obtained from two experiments done over four months apart, are 0.992 +/- 0.004 and 0.990 +/- 0.004. As there are no radiation dependent parameters required for the water calorimeter, these data add to the growing body of evidence which supports the use of the calorimeter as a reliable absorbed dose standard. They also support the use of 60Co-calibrated ionization chambers used in accordance with AAPM Report 16 for the dosimetry of proton beams.
通过一个灵活的、温度可控的、密封玻璃芯体水热计测定的160兆电子伏特质子束对水的吸收剂量，与根据美国医学物理师协会（AAPM）第16号报告使用的电离室测定的吸收剂量进行了比较。在相隔四个月进行的两项实验中获得的这些剂量的比值分别为0.992±0.004和0.990±0.004。由于水热计不需要依赖辐射的参数，这些数据进一步增加了支持将热计用作可靠吸收剂量标准的证据。它们还支持根据AAPM第16号报告使用经60钴校准的电离室进行质子束剂量测定。
