NMTCB Certified Nuclear Medicine Technologist

Which radionuclide is most commonly used for myocardial perfusion imaging?

• ATc-99m
• BI-131
• CGa-67
• DIn-111

What is the primary function of a collimator on a gamma camera?

• ATo amplify the gamma ray signal
• BTo convert gamma rays into visible light
• CTo define the direction of accepted gamma rays for image formation
• DTo shield the patient from scatter radiation

A nuclear medicine technologist is preparing a dose of Tc-99m MDP. What type of procedure is this radiopharmaceutical used for?

• AThyroid imaging
• BBone scintigraphy
• CRenal function study
• DLung ventilation scan

What is the maximum permissible annual whole-body dose for a radiation worker according to NRC regulations?

• A1 rem (10 mSv)
• B5 rem (50 mSv)
• C10 rem (100 mSv)
• D25 rem (250 mSv)

Before administering a radiopharmaceutical, the technologist should verify which of the following patient information?

• AOnly the patient's name
• BName and date of birth
• CName, date of birth, and allergies only
• DName, date of birth, pregnancy status, and relevant medication history

Which crystal material is used in most conventional gamma camera detectors?

• ABismuth germanate (BGO)
• BCadmium zinc telluride (CZT)
• CSodium iodide doped with thallium (NaI(Tl))
• DLutetium oxyorthosilicate (LSO)

What is the half-life of Tc-99m?

• A2 hours
• B6 hours
• C12 hours
• D24 hours

A patient undergoing a nuclear medicine study asks about the risk. What is the typical effective dose from a Tc-99m bone scan?

• A0.1-0.5 mSv
• B1-3 mSv
• C4-7 mSv
• D15-20 mSv

Which organ receives the highest radiation dose from an I-131 therapy for thyroid cancer?

• ALiver
• BBone marrow
• CThyroid remnant tissue
• DKidneys

What is the purpose of a Mo-99/Tc-99m generator in nuclear medicine?

• ATo produce PET radiopharmaceuticals
• BTo provide a continuous on-site supply of Tc-99m
• CTo dispose of radioactive waste
• DTo calibrate dose calibrators

What is the purpose of performing a daily chi-square test on a gamma camera?

• ATo verify energy resolution
• BTo assess the uniformity of the detector response
• CTo check the linearity of the detector
• DTo measure the sensitivity of the collimator

During a hepatobiliary (HIDA) scan, what radiopharmaceutical is typically used?

• ATc-99m sulfur colloid
• BTc-99m mebrofenin (Choletec)
• CTc-99m DTPA
• DTc-99m MAA

In PET imaging, what physical process produces the two 511 keV photons detected by the scanner?

• ACompton scattering
• BPhotoelectric absorption
• CPositron-electron annihilation
• DBremsstrahlung radiation

What is the recommended fasting period before an F-18 FDG PET scan?

• ANo fasting required
• B2 hours
• C4-6 hours
• D12 hours

What does the term ALARA stand for in radiation protection?

• AAs Low As Reasonably Achievable
• BAlways Limit And Restrict Activities
• CAs Little As Routinely Applied
• DApplied Limits And Radiation Assessment

Which radiopharmaceutical is used for sentinel lymph node mapping?

• ATc-99m pertechnetate
• BTc-99m sulfur colloid (filtered)
• CI-131 sodium iodide
• DGa-67 citrate

A patient who is breastfeeding presents for a nuclear medicine study. What is the MOST appropriate initial action?

• ARefuse to perform the study
• BProceed without any special precautions
• CConsult the nuclear medicine physician regarding the specific radiopharmaceutical and ces…
• DAsk the patient to pump and discard milk for 24 hours regardless of the agent

What is the standard energy window setting for Tc-99m imaging on a gamma camera?

• A70 keV ± 10%
• B140 keV ± 10%
• C140 keV ± 20%
• D364 keV ± 20%

Which of the following best describes a 'hot spot' on a bone scan?

• AAn area of decreased radiopharmaceutical uptake
• BAn area of increased radiopharmaceutical uptake indicating increased osteoblastic activity
• CA normal variant that requires no further evaluation
• DAn artifact caused by patient motion

What instrument is used to measure the activity of a radiopharmaceutical dose before administration?

• AGeiger-Müller counter
• BDose calibrator
• CWell counter
• DScintillation probe

A lung perfusion scan uses which radiopharmaceutical?

• ATc-99m DTPA aerosol
• BTc-99m MAA
• CXe-133 gas
• DTc-99m sulfur colloid

During SPECT acquisition, what does the gamma camera do that distinguishes it from planar imaging?

• AUses a higher energy collimator
• BRotates around the patient to acquire projections from multiple angles
• CUses two different radionuclides simultaneously
• DAcquires images at a faster frame rate

What is the purpose of a thyroid uptake measurement using I-123?

• ATo image thyroid nodules
• BTo measure the percentage of administered iodine concentrated by the thyroid
• CTo treat thyroid cancer
• DTo evaluate parathyroid adenomas