Nuclear Medicine Technology Certification
Practice Exam, NMTCB / ARRT, 2026/2027 –
Question Insider Test Bank with Complete
Q&A and Verified Answers
What is Pertechenate commonly used for? - ANSWERS-Meckels diverticulum,
thyroid scans, salivary glands, gastric emptying
What is the annual dose limit for the lens of the eye for an occupational
worker? - ANSWERS-50 mSv (5 rem)
Uniformity Test: - ANSWERS-- checks for uniform distrubution of counts
- ensures the camera does not have cold/hot spots
- uses flood source
Linearity Test: - ANSWERS-- checks if the camera accuratley portrays
distances/shapes without distortion
- ensures the camera's spatial response is linear
- uses bar pattern or line source
Spatial Resoulution - ANSWERS-- asses camera's ability to resolve small
objects or fine details
- done with pinhole collimator
Sensitivty Test: - ANSWERS-- measures how well the gamma camera
detects/responds to radiation
- a sealed source is placed distance from a camera to measure DPM
,Cutie Pie (Ionization Chamber) - ANSWERS-- used for surveying sources and
therapy areas
- measures high radiation levels
Geiger-Muller (GM) Counter - ANSWERS-- checks for contamination
- measures radiation levels (alpha, beta, gamma)
Purpose of Collimators: - ANSWERS-- used in SPECT/PET gamma camera to
focus/filter the gamma photons
Purpose of Bar Phantom: - ANSWERS-- evaluates spatial resolution
What scans are commonly done with converging collimator? - ANSWERS--
brain scans
- thyroid/parathyroid
- eye, ear, specific regions of the brain
Pulse Height Analyzer: - ANSWERS-- filters out unwanted radiation by
analyzing the energy of the incoming gamma rays
Star Artifact - ANSWERS-- bright central point with radiating lines
- pinhole collimators
- excessive RP activity in one area
What is the shelf-life and energy of Tc99? - ANSWERS-shelf-life: 6 hours
energy: 140 kev
What is the shelf-life and energy of I-123? - ANSWERS-shelf-life: 13.3 hours
, energy: 159 kev
What is the shelf-life and energy of Ga-67? - ANSWERS-shelf-life: 78 hours
energy: 93, 184, 300, 394 kev
What is the shelf-life and energy of In-111? - ANSWERS-shelf-life: 2.8 days
energy: 171, 245 kev
What is the shelf-life and energy of Tl-201? - ANSWERS-shelf-life: 73 hours
energy: 81 kev
What is the shelf-life and energy of F-18? - ANSWERS-shelf-life: 110 minutes
energy: 511 kev
What is the shelf-life and energy of Ga-68? - ANSWERS-shelf-life: 68 minutes
energy: 511 kev
Which RP is used for thyroid imaging in evaluating for thyroid structure and
function? - ANSWERS-Tc99-Pertechenate
Which RP is used for thyroid imaging in evaluating (cancer, nodules,
hyperthyroidism, hypothyroidism)? - ANSWERS-I-123
What is the annual dose limit for a pregnant worker? - ANSWERS-5 mSv
(0.5rem) entire pregnancy
What is the annual radiation exposure for member of the general public? -
ANSWERS-1 mSv = 0.1 rem = 100 mrem
Practice Exam, NMTCB / ARRT, 2026/2027 –
Question Insider Test Bank with Complete
Q&A and Verified Answers
What is Pertechenate commonly used for? - ANSWERS-Meckels diverticulum,
thyroid scans, salivary glands, gastric emptying
What is the annual dose limit for the lens of the eye for an occupational
worker? - ANSWERS-50 mSv (5 rem)
Uniformity Test: - ANSWERS-- checks for uniform distrubution of counts
- ensures the camera does not have cold/hot spots
- uses flood source
Linearity Test: - ANSWERS-- checks if the camera accuratley portrays
distances/shapes without distortion
- ensures the camera's spatial response is linear
- uses bar pattern or line source
Spatial Resoulution - ANSWERS-- asses camera's ability to resolve small
objects or fine details
- done with pinhole collimator
Sensitivty Test: - ANSWERS-- measures how well the gamma camera
detects/responds to radiation
- a sealed source is placed distance from a camera to measure DPM
,Cutie Pie (Ionization Chamber) - ANSWERS-- used for surveying sources and
therapy areas
- measures high radiation levels
Geiger-Muller (GM) Counter - ANSWERS-- checks for contamination
- measures radiation levels (alpha, beta, gamma)
Purpose of Collimators: - ANSWERS-- used in SPECT/PET gamma camera to
focus/filter the gamma photons
Purpose of Bar Phantom: - ANSWERS-- evaluates spatial resolution
What scans are commonly done with converging collimator? - ANSWERS--
brain scans
- thyroid/parathyroid
- eye, ear, specific regions of the brain
Pulse Height Analyzer: - ANSWERS-- filters out unwanted radiation by
analyzing the energy of the incoming gamma rays
Star Artifact - ANSWERS-- bright central point with radiating lines
- pinhole collimators
- excessive RP activity in one area
What is the shelf-life and energy of Tc99? - ANSWERS-shelf-life: 6 hours
energy: 140 kev
What is the shelf-life and energy of I-123? - ANSWERS-shelf-life: 13.3 hours
, energy: 159 kev
What is the shelf-life and energy of Ga-67? - ANSWERS-shelf-life: 78 hours
energy: 93, 184, 300, 394 kev
What is the shelf-life and energy of In-111? - ANSWERS-shelf-life: 2.8 days
energy: 171, 245 kev
What is the shelf-life and energy of Tl-201? - ANSWERS-shelf-life: 73 hours
energy: 81 kev
What is the shelf-life and energy of F-18? - ANSWERS-shelf-life: 110 minutes
energy: 511 kev
What is the shelf-life and energy of Ga-68? - ANSWERS-shelf-life: 68 minutes
energy: 511 kev
Which RP is used for thyroid imaging in evaluating for thyroid structure and
function? - ANSWERS-Tc99-Pertechenate
Which RP is used for thyroid imaging in evaluating (cancer, nodules,
hyperthyroidism, hypothyroidism)? - ANSWERS-I-123
What is the annual dose limit for a pregnant worker? - ANSWERS-5 mSv
(0.5rem) entire pregnancy
What is the annual radiation exposure for member of the general public? -
ANSWERS-1 mSv = 0.1 rem = 100 mrem
