ASRT Exam #4 Flashcards
The organ at greatest risk when treating the para-aortics is the: Liver. Rectum. Kidney. Bladder.
Kidney
Normal blood pressure in a healthy adult is:
A) systolic values between 60-80 mm Hg, diastolic values between 110-140 mm Hg.
B) systolic values between 110-140 mm Hg, diastolic values between 60-80 mm Hg.
C) systolic values between 60-80 mm Hg, diastolic values between 60-80 mm Hg.
D) systolic values between 80-120 mm Hg, diastolic values between 80-120 mm Hg
B) systolic values between 110-140 mm Hg, diastolic values between 60-80 mm Hg.
Which of the following is a contraindication to iodine based IV contrast?
Patient who has received contrast in the past without incident
Creatinine level <1.0 mg/dL
Middle age
Pregnancy
Pregnancy
Which of the following is an example of noncoplanar beam arrangement? Parallel opposed Four field box Stereotactic radiosurgery Whole brain lateral fields
Stereotactic radiosurgery
Which SI unit is used to measure radiation exposure? Becquerel Coulomb Gray Sievert
Coulomb
Which of the following is an example of a moderate physiologic reaction to contrast media? transient flushing arrhythmia protracted vomiting dizziness
protracted vomiting
Which treatment modality delivers the treatment while dose rates and field sizes change?
Step and shoot intensity modulated radiation therapy (IMRT)
3D
Volumetric modulated arc therapy (VMAT)
Electron beam therapy
Volumetric modulated arc therapy (VMAT)
Which factor used in photon calculation compares the dose at depth in a phantom to the dose at depth in air? Tissue-Maximum Ratio Scatter Air Ratio Tissue Phantom Ratio Tissue Air Ratio
Tissue Air Ratio
Which of the following is NOT a benefit of optically stimulated luminescent (OSL) dosimeters over
thermoluminescent dosimeters (TLDs)?
OSLs are smaller in size.
OSLs contain a unique ID number that minimizes the risk of errors in the tracking result.
OSLs are more sensitive to lower levels of radiation.
There is a shorter period of time before results can be read.
OSLs are smaller in size.
The exterior assembly of a chest tube must always:
remain above the patient’s chest.
remain below the patient’s chest.
be placed on the patient’s lap.
be placed on the treatment table during treatment delivery.
remain below the patient’s chest.
The tonal differences or scales of gray on an image is known as? density contrast spatial resolution magnification
contrast
Which of the following is NOT as common a metastatic route for Acute Lymphocytic Leukemia (ALL)? lung lymph nodes liver testicles
lung
A patient is admitted to the hospital and after the initial assessment, the patient has been determined to be a fall risk. What are some steps that can be taken to ensure the patient’s safety? Please select all that apply.
patient education
using lift devices when transferring the patient
using identification systems to alert staff
have staff assist with transferring the patient as needed
patient education
using identification systems to alert staff
have staff assist with transferring the patient as needed
Temperature, pressure and humidity are corrected for in calibration because they affect the:
Density of the absorption material, such as water, or Lucite.
Density of air in the ionization chamber.
Output of the accelerator.
Activity of the sources used.
Output of the accelerator.
The BEST way to limit patient exposure to ionizing radiation while also delivering the best care clinically is by: Decreasing time. Increasing distance. Increasing shielding. Decreasing examination.
Decreasing time.
