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Rad 370 Exam 1 Latest Questions With Verified Solutions
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  • Rad 370
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  • Rad 370

Radiopaque Marker - ️️material with high atomic number, lead, copper or solder wire, used on the surface of a patient or placed in a body cavity. Used to mark or outline specific parts or points of a patient Quality Assurance (QA) - ️️All planned or systemic actions needed to provide co...

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  • October 19, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
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Rad 370 Exam 1
Radiopaque Marker - ✔️✔️material with high atomic number, lead, copper or solder
wire, used on the surface of a patient or placed in a body cavity. Used to mark or outline
specific parts or points of a patient

Quality Assurance (QA) - ✔️✔️All planned or systemic actions needed to provide
confidence that a service will satisfy requirements for quality

Quality Control - ✔️✔️Techniques and activities used to fulfill requirements of quality
(Tests to be performed)

Quality Indicators - ✔️✔️Measurable elements of quality (Ex: 2%, 2mm, 1 degree)

Quality Assessment - ✔️✔️Collection and review of Quality Assurance data

Homogenuity - ✔️✔️Must be within 5 Hounsfield units

Percent of all cancer patients that will receive radiation therapy - ✔️✔️60%

Percent of patients cured through radiation therapy - ✔️✔️50-60%

Fixed Isocenter Distance - ✔️✔️100 cm

Varian scale begins with x degree at the top - ✔️✔️180

IEC scale begins with x degree at the top - ✔️✔️0

Projects the number field on the patient to accurately measure SSD - ✔️✔️ODI (Optical
Distance Indicator)


Separation - ✔️✔️the thickness of a patient along the CA or at any point within the the
irradiated volume; helps calculate the amount of tissue in front of, behind, or around a
tumor

Quality - ✔️✔️Features and characteristics that bear on its ability to satisfy patient
needs

DRR - ✔️✔️2D image reconstructed from CT data that shows a beam's eye view
(BEV) of the treatment field

, Fudicial Plate - ✔️✔️measurement device with little lead pieces which represent 1 cm;
helpful when taking port films

Accessory Holder - ✔️✔️Holds blocks and the electron applicator

Port Film - ✔️✔️2D image taken at least once a week to help verify the treatment setup

Ideal DRR slice - ✔️✔️3x3 mm

Aperture size of a CT - ✔️✔️80-90 cm

Translation - ✔️✔️Patient moving into the CT aperture

2 Main functions of CT Sim - ✔️✔️1. Target Localization: locate exactly what needs to
be treated and mark the patient
2. Create DRRs

PET CT Fusion - ✔️✔️PET shows physiology, CT shows anatomy; detect hot areas
and better represent the disease

CT MRI Fusion - ✔️✔️Anatomy of soft tissue; useful for brain tumors

Treatment failure - ✔️✔️10% or greater reduction in dose can be the difference in cure
or relapse; missing the tumor once or twice in the treatment series

Patient Position Aids - ✔️✔️Help the patient feel comfortable and reduce motion but
does not ensure the patient will not move
Ex: head holder, sponges, sandbags, prone pillow, arm board

Simple Immobilization Devices - ✔️✔️Require the patient to hold still; supplemental aid
Ex: arm stretcher, bite block

Complex Immobilization Devices - ✔️✔️Restrict movement and ensure reproducibility;
unique to patient anatomy
Ex: Alpha Cradle, Vac Bag, Aquaplast Mask

Separation - ✔️✔️Measurement of patient thickness from the point of beam entry to the
point of beam exit

PET - ✔️✔️Best modality to image lymphnodes

Posterior/Dorsal Body Cavity - ✔️✔️Cranial and spinal cavity

Anterior/Ventral Body Cavity - ✔️✔️Thoracic cavity and abdominopelvic cavity

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