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MI-400 Final Exam Study Guide Questions

Terms in this set (82)

Which of the following is NOT a way that we administer a radioactive tracer?
Intramuscular injection
Which of the following is NOT part of the ALARA concept?
Monitoring
A technologist typically measures a dose in this prior to administering it to the patient?
Dose Calibrator
The time it takes to eliminate radioactive material from the body by combination of the biological elimination and radioactive half life?
Effective half life
A Nuclear Medicine camera is called?
Gamma Camera
In a Nuclear Medicine department this is where radoopharmaceuticals are received and stored?
Hot Lab
These are nuclides that have the same total number of neutrons and protons but are different elements?
Isobars
The instability of this is the basis for radioactive decay
Nuclide
During this type of picture the camera and the patient stays in one position until the image is done being acquired
Static
A technologist would use this instrument to assay the department at the end of the day to look for contamination
Survey Meter
Isotopes are nuclides of the same element with the same number of protons but a different number of neutrons
TRUE
Occupational radiation exposure is measured in rems
TRUE
Radio-pharmacies are where radio-pharmaceuticals are compounded and are located within every hospital
FALSE
When disposing radioactive materials, once you have waited 10 times the half life you can dispose of the waste as regular trash
FALSE
Nuclear chemistry deals with changes in the _______
NUCLEUS
Too many ____ or ______ may cause a Nuclear to become _____ and break apart
PROTONS, NEUTRONS, UNSTABLE
The nucleus contains _____ and _______
PROTONS, NEUTRONS
Dose rate
mR/hr
Exposure
Roentgen
Dose Equivalent
Rem or Sv
Absorbed Dose
Rad or Gy
Measurement of Radioactivity
Curie
_____ is the measurement of how fast a radiation dose is being received
DOSE RATE
_____ is the amount of radiation absorbed by any object
ABSORBED DOSE
_______ is the measurement of the relative harm or risk caused by a given dose of radiation when compared to air
DOSE EQUIVALENT
_____ is the strength of a radiation field at some point in air
EXPOSURE
____ is the amount of ionizing radiation released by a material
MEASURING RADIOACTIVITY
Radiation levels outside a room are such that an individual could receive .30 rem in 1 hour. According to the NRC, the technologist should?
Post a High Radiation Area Sign
It is determined that a healthcare worker could receive 300 mrem per year. According to NRC regulations this worker
Does not need to be issued a personnel dosimeter
A right handed Nuclear Medicine Technologist puts on a ring badge before work. The ring should probably be worn
On the right hand with the thermoluminescent dosimeter TLD chip facing the palm of the hand
A technologist declares her pregnancy. Her exposure should?
Not exceed 500 mrem to the fetus during gestation
A package with a Transportation Index (TI) of 3 would indicate to the technologist that the package
Will read 3mrem at 1m
A package arrives with a surface reading of 10 mrem/hr the label should be?
Yellow II
The federal agency that is responsible for the regulation of the uses of byproduct material is the
NRC
Which of the following is not a common type of personnel monitoring?
Geiger Mueller Meter
This type of personnel monitoring uses a thin slice of aluminum oxide that is inserted into a light proof envelope containing different filters to monitor radiation exposure for up to 3 months
Optically stimulated luminescence dosimeters
What is a Radiation Safety Program responsible for?
Radiation safety for everyone in the hospital, Radiation training for staff, posting and labeling radiation areas. (ALL OF THESE)
Which of the following radioisotopes is not produced by a generator
N-13
What does the image below represent
Linear Accelerator
In every hospital radio-pharmaceuticals are received and stored in the ___
HOT LAB
Radio-pharmaceuticals are compounded and dispensed in a _____ (not every hospital has one)
RADIOPHARMACY
All _____ used in Nuclear Medicine are produced by artificial means
RADIONUCLIDES
External radiation and surface contamination must be verified within _____ hours of delivery
3 hours
NRC
Nuclear Regulatory Commission
FDA
Food and Drug Administration
RSO
Radiation Safety Officer
DOT
Department of Transportation
Which survey meter is appropriate to use when measuring high levels of radiation
Ionization chamber
According to the NRC, survey meters must be calibrated
Annually
The 360 degree orbit is most often used in SPECT studies except for scans of?
Cardiac
This uses a thallium activated sodium iodide crystal to detect very low activities, such as wipe tests
Well counter
Temperature changes can affect which of the following parts of a gamma camera
PMT and crystal
During this type of image acquisition the camera moves over the patient creating one long image
Whole Body
Which of the following collimator would have the longest bore length
MEGP
You are setting up the camera for a dynamic image for a gallbladder study. The camera parameters are 60 seconds per frame for 45 frames. The patient asks how long the images will take. What would you tell them
45 minutes
The process of converting 2D projections into a 3D image is called?
Image reconstruction
When a positron interacts with the electron and their masses are the same it creates?
The annihilation process
What type of image acquisition is displayed below? (Shows spots on rib cage)
Static "spot"
This machine is used to calculate thyroid uptake
Well counter
Which of the following is not part of a gamma camera?
Dose calibrator
Which of the following would not be a shape of a photomultiplier tube?
Triangle
This is a sensitive instrument with a long response time which makes it best for measuring high doses. It also gives an accurate exposure rate
Portable ionization chamber
_____ records how the radiopharmaceutical administered to the patient changes over time
Dynamic imaging
In a gamma camera this is used to select energies that will be used for the image
Pulse Height Analyzer
PET is different from traditional nuclear medicine because it uses short lived ________ forms of common organic elements tagged to tracers to image
Positron emitting
In the evaluation of a primary bone neoplasms, bone scans
Are used to detect disease elsewhere
The main determinant of the rate of liquid gastric emptying is
Composition
Visualization of the kidneys on a 99mTc-MDP scan is considered
Normal, because 99mTc-MDP is excreted via the urinary tract
A patient is entering the osseous phase of a routine three-phase bone scan. The technologist should
Begin to take 2- to 3- hour delayed images
The most frequent indication of the V/Q scan is
Pulmonary Embolism
For lung imaging, pulmonary blood flow in a person sitting in a upright position will be
More abundant in the base of the lungs
The radionuclide image (V/Q) of the lung, provides a map of lung
Perfusion & Ventilation
Which of the following is not an indication for a gastric emptying study
Osteomyelitis
All of the following are major roles of the stomach EXCEPT
Secretes bile which aids in digestion
Patient preparation for gastric emptying studies is very important. Which of the following is part of the patient prep
Patient should be NPO 4-12 hours prior to the exam
Why does a solid meal for a gastric emptying study consist of eggs, toast, jelly, and water?
To replicate a typical meal with protein, carbs, liquid, and sugar
During this type of image acquisition the camera moves over the patient creating one long image
Whole Body
Interpretation of the chest radiograph, ventilation scan, and perfusion images for a typical finding of pulmonary embolism would most likely be found in?
Segmental perfusion defects, normal ventilation, normal chest x-ray
If the results of a gastric emptying show 4% of the ingested meal left at 4 hours, the impression of the study would be abnormal
FALSE
The organ receiving the greatest radiation dose during a bone scan would be
BLADDER
The best type of lung imagine to visualize COPD would be
AEROSOL VENTILATION USING 99mTc-DTPA
A liquid gastric emptying study would have a _____ emptying rate compared to a solid gastric emptying study
FASTER
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