ASRT WRONG
The CT, or Hounsfield, number for fat is:
-100
Which of the following describes CT simulation lasers? Please select all that apply.
-Consist of a single overhead laser that moves to project the sagittal plane. -Are two vertical moving lateral lasers to project coronal plane. -Can be fixed lasers to project the transverse plane.
In the CT scanner, movable lasers are used to do which of the following? Please select all that apply.
-Display field size -Provide isocenter position information
Which of the following are categorized as chemotherapy wastes? Please select all that apply.
-Expired drugs -Aborted dosages -Contaminated personal protective equipment -Material used to clean up a chemotherapy spill
Exposure to low levels of radiation may produce:
-Genetic effects -Neoplastic disease -Diminished life span
What methods are acceptable to use when identifying a patient? Please select all that apply.
-Hospital identification bracelet. -Having the patient spell their last name -Having the patient state their birthdate
When performing a simulation on a patient in CT, contrast may be needed. Which of the following are methods that can be used to administer contrast media? Please select all that apply.
-Intravascularlly -Intrathecally -Intraarteriorly -Orally -Previous
Which of the following is true of a benign tumor? Please select all that apply.
-It is not a malignant cancer. -It does not spread to other parts of the body. -The prognosis, in most cases, is very good.
Cisplatin and carboplatin can produce dose-limiting factors such as __________.
-Myelosuppression -Nephrotoxicity -Vomiting
Treatment billing codes may be based on which of the following? Please select all that apply.
-Number of fields -Complexity of treatment -Photon energy
When checking light field and radiation field agreement, which of the following tools are used? Please select all that apply.
-Ready pack film -Solid water
Tumor staging is used to describe which of the following? Please select all that apply.
-Where the tumor is located in the body. -The size of the tumor. -Whether the cancer has spread to a different part of the body.
Which of the following is a common site of metastasis for esophageal cancer? Please select all that apply.
-liver -brain -bone
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 identification systems to alert staff -have staff assist with transferring the patient as needed
The annual effective dose equivalent limit for the general population is:
1 mSv
For a member of the general public, the maximum exposure of radiation should not exceed ________?
100 mrem/year
Xerostomia occurs after _________ cGy resulting in significant long-term effects.
1000
What is the normal range of platelets in a healthy adult?
150,000 - 450,000 mc/L
Electron beam energy is reduced by _____ MeV per cm in unit density tissue.
2
Erythema typically occurs at:
2,000 - 3,000 cGy.
Permanent azoospermia may occur in men being treated for testicular cancer after what dose?
2-3Gy
Patients will begin to experience epilation after an initial dose of:
2000cGy
Radiation exposure during the gestational period of _________ days usually affects the nervous system.
23 to 37
What is the daily tolerance level of the optical distance indicator (ODI)?
2mm
What is the normal range of white blood cells in a healthy adult?
3,500 to 10,500 cells/mcL
What is the Tolerance Dose for 5% risk at 5 years (TD 5/5) for the whole liver?
30Gy
Under the new standards (NCRP Report No. 91), an effective dose equivalent limit of ____rem/year for occupational exposure is recommended.
5
The annual whole body effective dose limit for an occupational worker recommended by the NCRP is:
5 rem
The American Cancer Society recommends screening for colon cancer in average risk individuals to begin at age:
50
Radioactive sources must be physically inspected every ___ months.
6
The typical radiation dose to the prostate post operatively is:
65 - 70 Gy to 200 cGy/fx
Which of the following is an indication to screen patients for lung cancer with low dose CT scans?
A 30 pack year smoking history
Which of the following treatment aids is considered to be an immobilization device?
Alpha Cradle mold
When preforming time out procedures, patient identity can be confirmed with:
An ID bracelet
5-flurouracil (5-FU) is what type of chemotherapy?
An antimetabolite
When reviewing a transverse slice, what directional terms orient the image?
Anterior/Posterior and Right/Left
Ionic iodine contrast media is referred to:
As radiopaque and has a high osmolality rate.
The most common histology for cancer of the brain is:
Astrocytoma
The concept that patients are treated as individuals and informed about procedures to facilitate appropriate decisions.
Autonomy
Damage to the _________ cells is the earliest appearance of radiation damage to the skin.
Basal
Where do medulloblastomas typically metastasize to?
Bone
According to the American Joint Committee on Cancer staging system, T1b glottic cancer involves:
Both vocal cords
Surgical excision is the first line of treatment for carcinoma of the:
Breast
The cricoid cartilage is at which vertebral level?
C6
The treatment planning volume which encompasses suspected positive lymphnode chains is the:
CTV
Which lymph nodes drain the liver?
Celiac
Which SI unit is used to measure radiation exposure?
Coulomb
______ is considered the critical target because its ionization produces the greatest consequence to the cell.
DNA
The BEST way to limit patient exposure to ionizing radiation while also delivering the best care clinically is by:
Decreasing time
___________ is the ethical theory that bases decisions on individual motives and morals.
Deontology
If a patient experiences urticaria during administration of contrast, how should this acute reaction be managed?
Discontinue injection and give the patient a histamine
Tissue-to-air ratio (TAR) is independent of:
Distance
A highly reactive species with an unpaired valence or outer shell electron is known as a(n)?
Free radical
The most anterior lobe of the cerebrum is the:
Frontal lobe
Effects on __________ cells may have a clinical impact.
Germ
This term includes home, respite, inpatient hospital care and support during bereavement.
Hospice care
As source to surface distance (SSD) increases, the percent depth dose:
Increases
Which best explains the relationship between distance and dose rate?
Increasing the distance by two-fold results in a four times decrease in dose rate.
The base of the tongue first spreads to what lymph node or lymph group?
Jugulodigastric
The spinal cord is about 25 cm shorter than the vertebral column, usually ending near the level of:
L1-2
Radiation therapy is the first line of treatment for which of the following cancers?
Larynx
Chemotherapy is indicated for which of the following?
Locally advanced invasive breast carcinoma
Which of the following is NOT as common a metastatic route for Acute Lymphocytic Leukemia (ALL)?
Lung
Chemotherapy is administered concurrently with radiation therapy in the treatment of:
Lung carcinoma
Which is NOT used to achieve a uniform dose by compensating for missing or curved tissue?
MLC
The penetration of x-ray through tissue is primarily a function of:
Milliampere-second (mAs).
A contrast media reaction that consists of chest and/or abdominal pain, chills, severe vomiting, dyspnea and excessive urticaria of the face and/or larynx would be classified as a/an:
Moderate reaction
In an isodose distribution, the point where the dose is set at 100% is called the:
Normalization point.
Which of the following is NOT a benefit of optically stimulated luminescent (OSL) dosimeters over thermoluminescent dosimeters (TLDs)?
OSLs are smaller in size.
If a patient experiences a mild reaction from contrast media, which of the following would be the MOST appropriate intervention?
Observation is required
The primary lymphatic drainage of the testicle is the _______.
Periaortic nodes
Which advanced couch motion controls the head/feet tilt?
Pitch
Which of the following is a contraindication to iodine based IV contrast?
Pregnancy
Which of the following tumor sites is MOST OFTEN treated with Intensity Modulated Radiation Therapy (IMRT)?
Prostate
Average tissue-to-air ratio (TAR) is used when calculating monitor units for which type of treatment fields?
Rotational fields
Percentage depth dose curve (PDD) is dependent on all of the following factors except for:
SAD
The imaging size of a CT scanner is most dependent on:
Scanned field of view.
When assisting a patient from a wheelchair to the treatment table, the patient's ________ should be closer to the side of movement.
Stronger
Which vertebral body is adjacent to the base of the heart?
T4
_________ is an external landmark often used when setting up whole brain treatments.
The external acoustic meatus
A seizure can be described as:
The uncontrolled movement of muscles.
A surgical report that indicates the presence of positive margins means that:
There is disease remaining
All of the following are contraindications for chemotherapy, EXCEPT:
Third trimester pregnancy
In the radiation treatment of a Wilms tumor, why would the field extend over to the other side of the spine opposite the kidney affected?
To allow for symmetrical growth in the spine
Which of the following is TRUE regarding multileaf collimator (MLC) leaves?
Transmission is less than that through a cerrobend block
Which area of a treatment room is considered a secondary barrier?
Treatment couch
Universal Precautions requires:
Treatment of all patients as if they were contagious.
Shock caused by sepsis, deep anesthesia, or administration of contrast media is:
Vasogenic shock
Which condition would only require standard precautions?
Virus
Which treatment modality delivers the treatment while dose rates and field sizes change?
Volumetric modulated arc therapy (VMAT)
What is a normal systolic blood pressure reading?
below 120 mm Hg
The instrument of choice, the _______ is used when determining exposure rates from patients with therapeutic doses of radioactive materials.
cutie pie
Damage by ionization of a biologic macromolecule is caused by _______ action.
direct
The _________ is a small coil of wire made of thoriated tungsten, this is the source of _________.
filament, electrons
Oxygen:
is considered a drug, and is typically prescribed at the minimum dose needed.
Chromosome aberrations and chromatid aberrations are two types of anomalies that are observed at _________.
metaphase
The prostate can be located by the:
neck of the femur
The most radiosentive cell during female germ development is the ___________.
ooctye
The interaction between an incident photon and an inner shell electron which transfers all the energy of the photon to the electron is called:
photoelectric effect
Whole body exposure to a radiation dose of 1 Gyt results in the _________ period producing acute clinical symptoms that occur within hours.
prodromal
Which of the following is an example of a moderate physiologic reaction to contrast media?
protracted vomiting
The doctrine of ________________ describes how a person is injured through no fault of his/her own.
res ipsa loquitur
Electronic systems used to identify patients must have at least _____ methods for independent confirmation.
two
Level II axillary lymph nodes lie:
under the pectoralis muscle