摘要:
A technique for Intensity-modulated radiation therapy (IMRT), an advanced form of external beam irradiation that is commonly referred as three-dimensional conformal radiation therapy (3DCRT), uses an array of radiation sources disposed within cells of a two-dimensional (2D) grid of radiation blocking walls. The intensity of radiation applied to a patient from any individual source is modulated dependent on local properties of a target, such as characteristics or dimensions of that portion of a tumor subject to radiation from a given source at a given time. In particular, each source is individually moved toward or away from the patient depending on the local (i.e., local to that source) properties of the target.
摘要:
A system and method for reducing intrafractional motion of a subject The system includes a subject user device, whereby the user device includes an image acquisition device configured to receive location marker information of the subject to provide location marking data of the subject. The system may also include a digital processor configured to: receive the location marking data and determine movement of the subject relative to the location marker information; and communicate feedback of the movement to the subject to help the subject reduce intrafractional motion.
摘要:
Disclosed are a robot cleaner and a self testing method thereof. The robot cleaner performs a self test when being initially operated or when required by a user. This may prevent malfunctions or breakdowns of the robot cleaner. Furthermore, the robot cleaner senses states of components and sensors mounted therein, and performs a self test based on characteristics, output values, etc. of the components and the sensors. This may prevent accidents or errors which may occur as the robot cleaner operates.
摘要:
Disclosed are a robot cleaner and a self testing method thereof. The robot cleaner performs a self test when being initially operated or when required by a user. This may prevent malfunctions or breakdowns of the robot cleaner. Furthermore, the robot cleaner senses a state of an operation sensing unit provided at a body, based on a sensing signal of the operation sensing unit. This may prevent accidents or errors which may occur as the robot cleaner operates.
摘要:
A system and method for reducing intrafractional motion of a subject The system includes a subject user device, whereby the user device includes an image acquisition device configured to receive location marker information of the subject to provide location marking data of the subject. The system may also include a digital processor configured to: receive the location marking data and determine movement of the subject relative to the location marker information; and communicate feedback of the movement to the subject to help the subject reduce intrafractional motion.
摘要:
A motion compensation system includes a plurality of RF transmitters, a plurality of direction of arrival sensors, and a positioning table which together are usable to compensate for intrafraction motion of a patient during a medical procedure. The positioning table may be a secondary table arranged next to or above a primary table such as a radiotherapy couch, allowing for repositioning of part of patient such as the head and neck relative to a remainder of the body. The motion compensation system employs a direction of arrival sensor that includes rotating antenna elements in a configuration that improves the ease and accuracy of signal processing and analysis to identify the position of an RF transmitter affixed to a patient. The repositioning table has six degrees of freedom and is safe for use in imaging and radiation intensive environments.
摘要:
Disclosed are a robot cleaner and a self testing method thereof. The robot cleaner performs a self test when being initially operated or when required by a user. This may prevent malfunctions or breakdowns of the robot cleaner. Furthermore, the robot cleaner senses a state of an operation sensing unit provided at a body, based on a sensing signal of the operation sensing unit. This may prevent accidents or errors which may occur as the robot cleaner operates.
摘要:
Disclosed are a robot cleaner and a self testing method thereof. The robot cleaner performs a self test when being initially operated or when required by a user. This may prevent malfunctions or breakdowns of the robot cleaner. Furthermore, the robot cleaner senses states of components and sensors mounted therein, and performs a self test based on characteristics, output values, etc. of the components and the sensors. This may prevent accidents or errors which may occur as the robot cleaner operates.
摘要:
A computed tomography (CT) system (300) includes a table (304) for holding a patient (302), a first gantry (311) for holding a radiation source (310) which emits penetrating radiation, and a second gantry (313) spaced apart from the first gantry holding a penetrating radiation detector (312) for receiving the penetrating radiation after passing through the patient. The penetrating radiation from the radiation source is angled at a non-perpendicular angle with respect to a longitudinal axis (322) of the table. A third gantry (320) is spaced apart from the first and second gantry including at least one radiation therapy source (321) or other (non-CT) imaging system, wherein the third gantry is located between the first gantry and the second gantry. The CT system thus permits computed tomography to occur simultaneously or substantially simultaneously with other procedures, such as various other radiation therapy systems, imaging modality or surgical procedures.
摘要:
A computed tomography (CT) system (300) includes a table (304) for holding a patient (302), a first gantry (311) for holding a radiation source (310) which emits penetrating radiation, and a second gantry (313) spaced apart from the first gantry holding a penetrating radiation detector (312) for receiving the penetrating radiation after passing through the patient. The penetrating radiation from the radiation source is angled at a non-perpendicular angle with respect to a longitudinal axis (322) of the table. A third gantry (320) is spaced apart from the first and second gantry including at least one radiation therapy source (321) or other (non-CT) imaging system, wherein the third gantry is located between the first gantry and the second gantry. The CT system thus permits computed tomography to occur simultaneously or substantially simultaneously with other procedures, such as various other radiation therapy systems, imaging modality or surgical procedures.