C. Treatment setup Flashcards
» Wing boards, breast boards, head and neck boards, u-frame head holders, etc. can lock into the
index bar or directly into the table
head holders, sponge pillows, foam cushions, and neck rolls. are examples of
postioning aids
The sagittal laser is located on the wall ____the gantry
opposite
Lasers are checked daily and have a tolerance of
2 mm
_______: Technology that uses an optical surface scanning system to track a patient’s 3-D surface in real-time
Surface guided radiation therapy (SGRT)
______: A breathing technique that is used during radiation treatments » Uses a device to monitor breathing cycle in real-time
Respiratory gating
______ A specific belt or device used around the area of the diaphragm to limit the movement of the chest and abdomen during treatment
Abdominal compression
Abdominal compression: force the patient to
take shallow breaths
The secondary collimators are moveable and can create
asymmetric rectangular fields
Collimators are typically made of
tungsten
Less than _____ Of the beam is allowed to be transmitted through the collimator jaws
0.5 percent
Collimator and MLCs ____the treatment field
delineate
____ is also known as the “range finder”. it Displays a light with a scale in centimeters on the patient’s surface to specify the SSD Located on or near the collimator
Optical distance indicator (ODI)
The ODI has a ____ tolerance and is checked daily before treatments
± 2 mm
The term “____” is used when the gantry is parallel to the patient’s skin or contour
en face
