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Radiation Therapy Board Exam - Seal Exams Missed Questions and Answers
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  • Radiation therapy
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  • Radiation Therapy

Cataracts can occur after radiation doses of ________ cGy to the whole organ. - Answer-1,000 cGy Damage to the _________ cells is the earliest appearance of radiation damage to the skin. - Answer-Basal What size will a 6 cm tumor be on an image if the isocenter is set in the tumor and the ima...

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  • October 7, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • radiation therapy board exam seal exams missed q
  • cataracts can occur after radiation doses of

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Radiation Therapy Board Exam - Seal
Exams Missed Questions and Answers
Cataracts can occur after radiation doses of ________ cGy to the whole organ. -
Answer-1,000 cGy

Damage to the _________ cells is the earliest appearance of radiation damage to the
skin. - Answer-Basal

What size will a 6 cm tumor be on an image if the isocenter is set in the tumor and the
imager is at 140 cm, provided the machine isocenter distance is 100 cm? - Answer-8.4
(Imager distance/object distance) and multiply the magnification factor by the object
size.
140/100x6

The intensity of the radiation beam at 1m was 100 mR/hr. What would the exposure be
at 2m? - Answer-25 mR/hr
1/(2) squared x 100 mR/hr = 1/4 x 100 = 25

The treatment planning volume which encompasses suspected positive lymph node
chains is the: - Answer-CTV

The term used the describe table movement per rotation divided by slice thickness is: -
Answer-Pitch

Damage by ionization of a biologic macromolecule is caused by ______ action. -
Answer-Direct

Identifying with the feelings, thoughts, or experiences of another person: - Answer-
Empathy

When treating multiple fields, what is true regarding beam weighting? - Answer-Beam
weighting is useful when treating through a sensitive structure.

For a member of the general public, the maximum exposure of radiation should not
exceed ______ mrem/year? - Answer-100 mrem/year

The small bowel joins which component of the large intestine? - Answer-Cecum

Where do medulloblastomas typically metastasize to? - Answer-Bone

The base of the tongue first spreads to what lymph node or lymph group? - Answer-
Jugulodigastric

, Regarding the cell survival curve, ____________ is determined by the final portion of
the curve. It is an expression of radiosensitivity of the cell. - Answer-D0

Radiation exposure during the gestational period of _____________ days usually
affects the nervous system. - Answer-23 - 37 days

What is a contraindication to iodine based IV contrast? - Answer-Pregnancy

Temperature, pressure, and humidity are corrected for in calibration because they affect
the: - Answer-Output of the accelerator

Which factor used in photon calculation compares the dose at depth in a phantom to the
dose at depth in air? - Answer-Tissue Air Ratio

Codes used for billing professional and technical aspects of care are: - Answer-Current
Procedural Terminology Codes

Which treatment modality delivers the treatment while dose rates and field sizes
change? - Answer-VMAT

Oxygen: - Answer-Is considered a drug, and is typically prescribed at the minimum dose
needed.

The test that will check the uniformity of dose from one side of the field to the other is
called: - Answer-Beam symmetry

Thoracostomy tubes: - Answer-are used to drain the intrapleural space and the
mediastinum.

The tonal differences or scales of gray on an image is known as? - Answer-Contrast

Choosing to scan only what is required for patient imaging is an example of which
principle of ALARA? - Answer-Time

The BEST way to limit patient exposure to ionizing radiation while also delivering the
best care clinically is by: - Answer-Decreasing time

The plane which divides the body into anterior and posterior portions is: - Answer-The
coronal plane

Ipsilateral means: - Answer-Same side of the body

As the field size increases, the PDD curve: - Answer-Increases

The most common method for sterilization is: - Answer-Heat

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