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Patient treatment in a medical linear accelerator is characterized by many angular and translational movements of the gantry and couch. The direction and orientation of each treatment beam is specified by a set of gantry, turntable, and collimator angles. It is possible that some selected treatment field configurations will result in gantry/couch or(More)
BACKGROUND In human, a reduction in estrogen has been proposed as one of the key contributing factors for postmenopausal osteoporosis. Rodents are conventional models for studying postmenopausal osteoporosis, but the major limitation is that ovariectomy is needed to mimic the estrogen decline after menopause. Interestingly, in medaka fish (Oryzias latipes),(More)
In the color image, based on the characteristics of the HIS (hue-saturation-intensity) color space, there is most of the white blood cell information in the H component of the HIS color space, and there is most of the white blood cell nucleus's structure information in the S component, we develop an improved method, iterative GGM (gray level and gradient(More)
According to the characteristics of targeted block and near-color background interference in dynamic scene, this paper describes an improved model of CamShift (Continuous Adaptative Mean-Shift) for object detection and tracking. This improve Cam-Shift technique is predominantly based on weakening the color histogram information about target and the(More)
In the recent years, Voice over Internet Protocol (VoIP) is the most popular technology and becomes a kind of killer application, and 802.11-based wireless Local Area network (WLAN) has been set up in many public places. People who use VoIP over WLAN can be more convenient. In the common WLANs, IEEE 802.11e WLAN can support VoIP with better Quality of(More)
According to our previous study on the dose distribution around a shielded vaginal cylinder with a high-intensity 192 Ir source by using EGS4 code, the more detailed 3D-simulation model was established in this work. The results obtained by the 3D-simulation model were compared with those measured by i o n c hamber in previous work and evaluated by the(More)
The thermal stability and degradation kinetic of TV set housing plastic were investigated by the means of thermo gravimetric analyzer, the experiments of separating bromine were carried with a bench-scale pyrolysis reactor. The study results showed that the weight loss curve of TV housing plastic was divided into two different stages, the thermal(More)
When we use radiation to treat cancer patients, the irradiated volume usually encloses the detectable tumor and any metastatic areas that are thought to be at risk. Usually, in three-dimensional (3D) radiation therapy, we need to define the clinical target volume (CTV), which identifies the areas suspected of containing microscopic metastasis. We can use a(More)
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