为开展放射治疗剂量核查提供新手段，研究GD-301型玻璃剂量计的辐射剂量学特性。
To study the dosimetric properties of GD-301 glass dosimeter to provide a new measure for dose auditing in radiotherapy.
新的更为复杂的放射治疗技术要求辐射剂量计能够准确的测量三维剂量分布，提供高的空间分辨率。
New, complex radiotherapy delivery system techniques require dosimeters that are able to measure three-dimensional dose distributions accurately and with good spatial resolution.
提高肺癌放射治疗的剂量计算精度和解决肺肿瘤运动问题是提高肺癌放疗效果的重要物理因素。
It is an important physical factor for improving radiothery effect to advance precision of calculating dose and solve motility of lung cancer in radiotherapy.
在低水平放射性测量中，建议采用负二项式分布代替泊松分布来描述真实测量计数的几率分布。
In the measurement of low-level radioactivity, instead of Poisson distribution, a negative binomial distribution is proposed to denote the probability distribution of actual counts.
该文针对放射性同位素测吸水剖面存在的问题，探讨了用流量计直接测试注水井层段吸水量的方法。
It is discussed that a method of testing layered water absorbing capacity of water injector by flowmeter directly based on the problems in testing input profile by radioisotope.
目的研究调强放射治疗(IMRT)剂量计算与射野权重优化方法。
Objective To study the method for dose calculation and beam weight optimization of intensity-modulated radiation therapy (IMRT).
研究压电泵振动放射噪声，提出两种由振动量计算压电泵合成声压的理论模型。
Contributes to a research on the vibration radiation noise of piezoelectric pump. Two theory models are introduced, which calculate the synthetic sound pressure according to the vibration quantity.
研究压电泵振动放射噪声，提出两种由振动量计算压电泵合成声压的理论模型。
Contributes to a research on the vibration radiation noise of piezoelectric pump. Two theory models are introduced, which calculate the synthetic sound pressure according to the vibration quantity.
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