Exam 22: Conventional Fluoroscopy-Basedsimulation Procedures

_________________complex immobilization devices,such as thermoplastic immobilization devices and foaming agent devices,to the treatment couch will provide for "tighter" tolerance settings.

_______________________ contours are the most accurate of all transverse contouring methods.

Conventional simulation,also referred to as_______________________,implies the use of a piece of x-ray equipment capable of the same mechanical movements of a treatment unit.

Effective immobilization techniques accomplish the following: I.aid in daily treatment setup and reproducibility II.provide immobilization of the patient or treatment area with minimal discomfort to the patient III.support the conditions prescribed in the treatment plan IV.increase precision and accuracy of treatment

A patient's separation (IFD)= 14.5 cm.If the posterior SSD = 94 cm,what will the anterior SSD measurement be?

Generally,which term would describe the largest volume of tissue in the patient planning process according to ICRU Report 50?

Evidence of collimation,by reducing the diaphragm opening on the radiograph,should appear as a clear ___- to ___-cm border on the processed film.

Orthogonal images are two images taken at right angles to one another and are usually included as part of the fluoroscopy-based simulation procedure.

Presimulation planning includes the localization of disease using radiography and fluoroscopy.

For which of the following key staff functions in the radiation therapy process would the radiation therapist be a primary participant? I.diagnosis II.target volume localization III.simulation and treatment planning IV.fabrication of treatment aids