Abstract: A dose planning system, which takes the drug concentration distribution in human organs/tissues as well as the atomic composition distribution of human organs/tissues into consideration, and calculates the neutron/photon dose distribution in human organs/tissues under this drug concentration distribution using the Monte Carlo Method. Thereby the neutron/photon dose distribution in the organs/tissues of the human subject is calculated more accurately.

Abstract: A neutron measuring method is provided. The method includes utilizing the thermoluminescent crystal in the thermoluminescent dosimeter to convert the ionizing radiation emitted by an activated metallic body into scintillation light. The method further includes using a photodetector to measure the intensity of the scintillation light. The method further includes calculating the activity of the metallic body based on the intensity of the scintillation light and the second conversion factor. The method further includes using the second conversion formula to calculate the neutron intensity at the location of the metallic body based on the calculated activity of the metallic body.

Abstract: A patient-positioning system for radiotherapy is provided. The system includes a processing device and a storage device. The processing device loads a program from the storage device to execute a control module, a positioning room module, and a treatment room module. The control module obtains treatment planning data. The positioning room module calculates the second support displacement of the fulcrum through image registration based on the tilt angle, rotation angle, target displacement, original target point cloud, and a reference displacement. The treatment room module drives the mechanical device to move the treatment room table such that the fulcrum is at the second support displacement relative to the beam exit.

Abstract: A dose control system, including a processing device configured to obtain the real drug concentration in plasma of a patient. The processing device is further configured to calculate the corrected dose rate distribution datum based on the real drug concentration in plasma and a set of correction coefficients. The processing device is further configured to calculate the irradiation time based on the corrected dose rate distribution datum and the prescribed dose distribution datum. The processing device is further configured to control the irradiation device to irradiate the patient for the irradiation time.

Abstract: An intermediate is provided herein, and it has the structure shown in the formula (1) as follows: formula (1). In the formula (1), R1 is —Cl, —Br, —I, —OSO2CF3, —B(OH)2, or R2 is —F, —18F, —Cl, —Br, —I, —SnMe3, —SnBu3, —B(OH)2, or and A is a chiral auxiliary.

Abstract: A dose planning system, which takes the drug concentration distribution in human organs/tissues as well as the atomic composition distribution of human organs/tissues into consideration, and calculates the neutron/photon dose distribution in human organs/tissues under this drug concentration distribution using the Monte Carlo Method. Thereby the neutron/photon dose distribution in the organs/tissues of the human subject is calculated more accurately.