Shenyang Neusoft Medical Systems Co., Ltd.

Donghui Han

Nan Li

Jian Zhao

Guodong Liang

Baowei Xu

Guocheng Wu

Changqing Fu

Guotao Zhao

Peng Zhou

Shenghui Tian

Xinzhi Tian

An RT-CT integrated device comprising an RT system and a CT system is disclosed. The radiation-therapy centerline of the RT system and the scanning centerline of the CT system are on a same axis, and the RT system and the CT system are located at a same end of a treatment table.

RT-CT integrated device

An accelerator system is provided. According to an example, the accelerator system includes a ray source, a multi-leaf collimator including leaves, a multi-leaf collimator controller and a leaf position determining device. The multi-leaf collimator controller is configured to control each of the leaves to move according to a predetermined position. The leaf position determining device is configured to obtain a three-dimensional image of the multi-leaf collimator, determine a sub-field shape and a sub-field size of the multi-leaf collimator according to the three-dimensional image, determine an actual position of each of the leaves according to the sub-field shape and the sub-field size and obtain an error value for each of the leaves by comparing the actual position with the predetermined position for each of the leaves. In this way, the error value for each of the leaves may be used to control operation of the accelerator system.

Controlling accelerator system

Methods and devices for calibrating a gain of a scintillator detector are disclosed, where a scintillation crystal of the scintillator detector includes two or more energy regions. In an example, the scintillation crystal of the scintillator detector is adopted as a radiation source for calibrating. Electric signals outputted from a rear end of the scintillator detector are collected, and actual counts of the electric signals from each of at least two energy regions of the scintillation crystal at a specified position are obtained, respectively. Then, a gain of the scintillator detector may be adjusted according to the obtained actual counts of the electric signals from the at least two energy regions.

Calibrating gain of scintillator detector

Growing community of inventors

Shenyang, China

Donghui Han