Exam 22: Conventional Fluoroscopy-Basedsimulation Procedures

All of the following are considered simple immobilization devices except:

a(n.__________ is a reproduction of an external body shape,usually taken through the transverse plane of the CA of the treatment beam.

The human body is usually imaged in the following body planes: I.coronal II.sagittal III.transverse IV.proximal

According to ICRU Report 62,another term used to describe critical structures that may limit the amount of radiation delivered to the tumor volume is _________________.

As a radiation therapist,you must assess the patient's needs,recognize cultural differences,and respond to nonverbal communication before and during the simulation process.Which of the following would be considered an example(s)of assessment?

Selecting appropriate radiographic exposure techniques is a complex process.If you needed to radiograph a patient with the presence of pneumonia or atelectasis,the pathology would result in a(n)______________ of the absorption of x-rays.

Foaming agents,such as __________________________,have become widely used as an immobilization device.

Before the simulation procedure,the therapist should explain the procedure appropriate to the patient's level of understanding and inform the patient of what will be required of him or her during the procedure.

One of the weakest links in treatment planning is ____________________.

Most treatment planning on the fluoroscopy-based simulator is divided into two types of procedures: SAD and SSD setups.

A patient's separation,also referred to as IFD,is generally obtained during the conventional simulation process using a:

Optical components of the simulator may include: I.the laser system II.optical distance indicator (ODI) III.field light indicator IV.collimator movements

A __________________ is commonly used to treat pelvic malignancies with the patient in the prone position.

A patient's separation (IFD)= 24 cm.If the posterior SSD = 89 cm,what will the anterior SSD measurement be?

Complex immobilization devices are time consuming to construct,but relatively inexpensive to make.

Mechanical components of the simulator include: I.the motions of gantry rotation II.collimator movements III.treatment couch

State regulations may require the use of technique charts,which include guidelines for selecting the _______,_______,and _______ used in deciding radiographic exposure techniques. I.kVp II.mA III.time factors IV.contrast factors

Which body plane displays axial anatomic information obtained from CT and MRI images?

The PTV planning volume will contain margins for geometric uncertainties,such as:

One fluoroscopy-based conventional simulator can serve ___________________ treatment units.