NMTCB CERTIFICATION SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
• What are the 3 phases of Xe-133 ventilation?.
Answer: 1. Single Breath 2. Equilibrium 3. Washout
• SPECT QC.
Answer: Energy Peak 2.uniformity Resolution Linearity Center of Rotation
COR high - count extrinsic flood field uniformity correction Jaszczak
• Center of Rotation COR -.
Answer: NTRADY12 COR reduces spatial resolution & blurring Image
contrast a measure Performed to ensure center field of view of camera detect
or matches computer software
• High count extrensic flood - field uniformity correction.
Answer: Performed directly by manufacturer used to ensure efficiency
photon decfection is constant across an surface of collimated detector .
-30-100 mil . counts defeciency causes ring artifact in SPECT Imaging
• Jaszczak SPECT Phantom test -.
Answer: Jaszczak determines 3D contrast , resolut von , & uniformity of
SPECT camera . - 30mil.counts
• How much blood flow is supplied to lungs from bronchial circulation? A.
10% B. 5% C. 20% D. 50%.
Answer: B. 5%
• What is the min. number of particles to be injected in adults? A. 50,000 B.
60,000 C. 200,000 D. 800,000.
Answer: B. 200,000-700,000 range
• Combined SPECT CT QC.
Answer: Includes all QC + Registration attenuation correction accuracy or
mis registration consequences
,• SPECT QC NMTCB.
Answer: SPECT / CT QC 1. Peak 2. uniformity 3. Resolution 4. Untarity 5.
High Count extrinsic floodfield uniformity Correction B 6 COR Dopamos 7.
Jaszczak 8.Source strength 9.Transmission source mechanics
• What is the particle size of an MAA particle? A. 0.1 - 0.3 um B. 1 - 3 um C.
0.5 - 0.10 um D. 5 - 100 um.
Answer: D. 5 - 100 um
• Energy Peak.
Answer: confirm the camera is counting Photon in the Proper energy
Windows .
• -Transmission source mechanics.
Answer: confirm operation of the source Shutter & translating mechanics ,
& reference blank transmission Scan should be acquired . Weekly (
preferably daily)
• SPECT / CT X - ray based NMTCB QC.
Answer: - all spect / CT QC including CT QC 1.Calibration 2.field
uniformity Calibration CT number inserted Phantom L considerd not
calibrated if error is greater than 5 Hounsfield units Field uniformity ensures
uniform response throughout FOV -
• Biological Half-life of MAA in the lungs? A. 2 -4 hrs B. 4 - 5 hrs C. 6 hrs D.
24 hrs.
Answer: A. 2 - 4 hrs
• Brain Perfusion raphas.
Answer: Rapha Team Exametazine ECD , Dicisate , Cretec HMPAO
• What radiopharmaceutical is used for aerosol? A. 99mTc MAA B. DTPA C.
133- Xe gas D. B and C.
Answer: B. DTPA (99m Tc-diethylenetriamine pentaacetic acid)
• How much aerosol is administered? A. 5 mCi B. 15 mCi C. 25mCi D
40mCi.
, Answer: C. 25 mCi (range: 25-35mCi)
• Brain perfusion dose.
Answer: 10-20mCi
• Brain perfusion Indications.
Answer: 1. cerebrovascular disease - acute stroke transient ische- mic
attacks 2. Dementia - Alzheimer's disease , multi - infarct dementia 3.
Psychiatric disorder - affective disorder ( depre && Von Schizophrenia 4.
Seizure disorder - idenification & location of focal epilepsy sites 5. Head
Trauma ( cerebral brain death )
• What view is used when performing lung scans? A. Posterior B. Anterior C
Anterior & Posterior D. RAO.
Answer: A. Posterior
• What is a fissure sign in a lung scan?.
Answer: linear defects in regions caused by fluid in the fissure of patient
with CHF
• Brain perfusion imaging time.
Answer: 15-20min post injection (preferably @ 45min)
• What is a stripe sign in a lung scan?.
Answer: ~ indication of a low probability of pulmonary embolus ~
associated with atelectasis (Collapsing of the lung)
• Brain cross sections.
Answer: Mans axial Coronal sagital
• PET Oncology rapha.
Answer: F18- FDG
• FDG-F18 dose.
Answer: 5-20mCi intravenously
• Beta Minus Decay.
Answer: Nucleus is neutron rich and adds 1 to the atomic number to gain
more protons (neutron converted to a proton)
QUESTIONS WITH SOLUTIONS GRADED A+
• What are the 3 phases of Xe-133 ventilation?.
Answer: 1. Single Breath 2. Equilibrium 3. Washout
• SPECT QC.
Answer: Energy Peak 2.uniformity Resolution Linearity Center of Rotation
COR high - count extrinsic flood field uniformity correction Jaszczak
• Center of Rotation COR -.
Answer: NTRADY12 COR reduces spatial resolution & blurring Image
contrast a measure Performed to ensure center field of view of camera detect
or matches computer software
• High count extrensic flood - field uniformity correction.
Answer: Performed directly by manufacturer used to ensure efficiency
photon decfection is constant across an surface of collimated detector .
-30-100 mil . counts defeciency causes ring artifact in SPECT Imaging
• Jaszczak SPECT Phantom test -.
Answer: Jaszczak determines 3D contrast , resolut von , & uniformity of
SPECT camera . - 30mil.counts
• How much blood flow is supplied to lungs from bronchial circulation? A.
10% B. 5% C. 20% D. 50%.
Answer: B. 5%
• What is the min. number of particles to be injected in adults? A. 50,000 B.
60,000 C. 200,000 D. 800,000.
Answer: B. 200,000-700,000 range
• Combined SPECT CT QC.
Answer: Includes all QC + Registration attenuation correction accuracy or
mis registration consequences
,• SPECT QC NMTCB.
Answer: SPECT / CT QC 1. Peak 2. uniformity 3. Resolution 4. Untarity 5.
High Count extrinsic floodfield uniformity Correction B 6 COR Dopamos 7.
Jaszczak 8.Source strength 9.Transmission source mechanics
• What is the particle size of an MAA particle? A. 0.1 - 0.3 um B. 1 - 3 um C.
0.5 - 0.10 um D. 5 - 100 um.
Answer: D. 5 - 100 um
• Energy Peak.
Answer: confirm the camera is counting Photon in the Proper energy
Windows .
• -Transmission source mechanics.
Answer: confirm operation of the source Shutter & translating mechanics ,
& reference blank transmission Scan should be acquired . Weekly (
preferably daily)
• SPECT / CT X - ray based NMTCB QC.
Answer: - all spect / CT QC including CT QC 1.Calibration 2.field
uniformity Calibration CT number inserted Phantom L considerd not
calibrated if error is greater than 5 Hounsfield units Field uniformity ensures
uniform response throughout FOV -
• Biological Half-life of MAA in the lungs? A. 2 -4 hrs B. 4 - 5 hrs C. 6 hrs D.
24 hrs.
Answer: A. 2 - 4 hrs
• Brain Perfusion raphas.
Answer: Rapha Team Exametazine ECD , Dicisate , Cretec HMPAO
• What radiopharmaceutical is used for aerosol? A. 99mTc MAA B. DTPA C.
133- Xe gas D. B and C.
Answer: B. DTPA (99m Tc-diethylenetriamine pentaacetic acid)
• How much aerosol is administered? A. 5 mCi B. 15 mCi C. 25mCi D
40mCi.
, Answer: C. 25 mCi (range: 25-35mCi)
• Brain perfusion dose.
Answer: 10-20mCi
• Brain perfusion Indications.
Answer: 1. cerebrovascular disease - acute stroke transient ische- mic
attacks 2. Dementia - Alzheimer's disease , multi - infarct dementia 3.
Psychiatric disorder - affective disorder ( depre && Von Schizophrenia 4.
Seizure disorder - idenification & location of focal epilepsy sites 5. Head
Trauma ( cerebral brain death )
• What view is used when performing lung scans? A. Posterior B. Anterior C
Anterior & Posterior D. RAO.
Answer: A. Posterior
• What is a fissure sign in a lung scan?.
Answer: linear defects in regions caused by fluid in the fissure of patient
with CHF
• Brain perfusion imaging time.
Answer: 15-20min post injection (preferably @ 45min)
• What is a stripe sign in a lung scan?.
Answer: ~ indication of a low probability of pulmonary embolus ~
associated with atelectasis (Collapsing of the lung)
• Brain cross sections.
Answer: Mans axial Coronal sagital
• PET Oncology rapha.
Answer: F18- FDG
• FDG-F18 dose.
Answer: 5-20mCi intravenously
• Beta Minus Decay.
Answer: Nucleus is neutron rich and adds 1 to the atomic number to gain
more protons (neutron converted to a proton)
