A method and device for detecting X-ray absorbed dose of a patient during radiotherapy
A technology of absorbed dose and X-ray, which is applied in the field of determination of absorbed dose of X-rays, and can solve the problem that there is no detection and evaluation method and device for the absorbed dose of cancer patients
Active Publication Date: 2018-11-09
INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, there is no effective detection and evaluation method and device for the actual absorbed dose of cancer patients
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] A method and device for detecting X-ray absorbed dose of a patient during radiotherapy according to the present invention will be described in detail below with reference to the embodiments and accompanying drawings.
[0036] A method and device for detecting X-ray absorbed dose of a patient during radiotherapy of the present invention is to reflect the absorbed dose of a tumor patient to X-ray by detecting the sound wave signal excited by the X-ray pulse.
[0037] X-ray excited photoacoustic imaging technology detects X-ray absorbed dose of tumor patients during radiotherapy. The photoelectron collisions of the photons reach a thermal balance, which increases the temperature of the tumor tissue, thereby generating a pressure wave, that is, an image of the X-ray absorbed dose distribution excited by X-rays that carries the X-ray absorbed dose information of the lesion tissue. Calculate the absorbed dose of X-rays for tumor patients through the X-ray absorbed dose calcul...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and device for detecting the X-ray absorbed dosage of a patient in the radiation treatment process. A sound transducer for receiving focus tissue X-ray absorbed dosage information is attached to the skin surface close to a focus tissue portion; a medical linear accelerator transmits X ray to tumor patient focus tissue, after the focus tissue absorbs X-ray energy, the local temperature is increased, and sound waves carrying the X-ray absorbed dosage information are excited; the sound transducer receives sound waves carrying the focus tissue X-ray absorbed dosage information; the sound transducer sends the received sound waves to a prefilter to be filtered, and filtered signals are fed into an amplifier to be amplified; the signal amplified by the amplifier is collected by a collection card, and data is recorded by a computer; by means of an image reconstruction algorithm, the wave sound data collected and recorded by the computer is used for rebuilding a two-dimensional sound wave signal distribution image; the X-ray absorbed dosage is obtained through an X-ray absorbed dosage calculation formula. In the radiation treatment process, data is provided for the ray absorbed dosage.
Description
technical field [0001] The invention relates to the determination of X-ray absorbed dose. In particular, it relates to a method and device for detecting X-ray absorbed dose of a patient during radiotherapy Background technique [0002] Radiation therapy is a conventional means of treating malignant tumors. About 70% of cancer patients require radiation therapy at various stages of treatment. In the process of radiotherapy, the calculation and control of dose is the key technology to ensure the effect of radiotherapy. At present, the dose control in the radiotherapy process is to calculate the treatment time and dose according to specific dosimetry standards, and then program and control the X-ray machine to implement the treatment. However, there are no effective detection and evaluation methods and devices for the actual absorbed dose of cancer patients. [0003] Recent studies have shown that X-ray pulses can effectively stimulate the generation of acoustic wave signal...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10A61B5/00
CPCA61B5/0093A61B5/72A61N5/1048A61N5/1071
Inventor 刘志朋张伟曹爽殷涛
Owner INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI