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- Number of terms: 14663
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Varian Medical Systems, Inc., headquartered globally in Palo Alto, California, is the world's leading manufacturer of medical devices and software for treating cancer and other medical conditions with radiotherapy, radiosurgery, proton therapy, and brachytherapy. The company supplies informatics ...
Deviation of particles (photons, electrons, neutrons) from a straight trajectory caused by interaction with matter. This results in radiation outside the actual field aperture.
Industry:Medical devices
A filter placed in the treatment beam to modify the dose distribution to account for the contour, composition, and orientation of the patient's body with respect to the radiation field.
Industry:Medical devices
A high-precision radiotherapy technique, based on the three-dimensional volumetric definition of the tumor and the anatomy of critical organs. A complex process, 3D-CRT begins with creation of individualized, 3D digital data sets of patient tumors and normal adjacent anatomy. These data sets are then used to generate 3D computer images and develop complex plans to deliver highly “conformed” (focused) radiation while sparing normal adjacent tissue. Because higher doses of radiation can be delivered to cancer cells while significantly reducing the amount of radiation received by surrounding healthy tissues, the technique should increase the rate of tumor control while decreasing side effects. 3DCRT is used to treat tumors that in the past might have been considered too close to vital organs and structures for radiation therapy, such as tumors in the head and neck that are close to the spinal cord, optic nerve, salivary glands, and other important structures.
Industry:Medical devices
The type of clinical treatment or imaging procedure, to include Fixed Gantry, Arc, Total Body, HDTSE (high-density total skin electrons), Setup, KV Image, MV Image, Port Film, Fluoroscopy, and Cone Beam CT. See also individual treatments and imaging procedures.
Industry:Medical devices
Consists of the four distinct networks in HET: data network, workstation Ethernet network, imaging network, and subsystem network. Communications between the parts of the system are provided by Ethernet and controller area networks (CAN).
Industry:Medical devices
The process of calibrating each axis to a system-coordinate reference frame. As long as an axis is axis-calibrated, it is unnecessary to perform system calibration a second time. An authorized user, typically a service or manufacturing technician, performs the calibration process as needed. See axis calibration, calibration.
Industry:Medical devices
System Administrator or sysadmin maintains and operates a computer system or network. Usually has all the access rights.
Industry:Medical devices
Timekeeping that requires the coordination of events to operate a system in unison. Also called sync.
Industry:Medical devices
