NMTCB Anatomy & Physiology for Nuclear Medicine 2

Question 1

During a parathyroid scan with Tc-99m sestamibi, a parathyroid adenoma is most commonly found in which anatomical location?

Accepted Answer

Inferior parathyroid glands (near inferior thyroid poles)

Answer

Parathyroid adenomas most commonly arise from the inferior parathyroid glands located near the inferior thyroid poles, where persistent sestamibi uptake differentiates them from thyroid tissue.

Question 2

A gastric emptying study uses a radiolabeled solid meal. Which part of the stomach is primarily responsible for trituration and propulsion of solids toward the pylorus?

Accepted Answer

Antrum

Answer

The antrum grinds solid food into small particles (trituration) and propels them through the pylorus; antral dysfunction leads to delayed gastric emptying.

Question 3

In a sentinel lymph node mapping procedure for breast cancer, the primary lymph node basin targeted is located in which anatomical region?

Accepted Answer

Axilla

Answer

Breast lymphatics drain predominantly to the axillary lymph nodes, which are the primary sentinel node basin mapped in breast cancer procedures.

Question 4

Which anatomical structure separates the right and left lobes of the liver and is used as a landmark in hepatic imaging?

Accepted Answer

Falciform ligament

Answer

The falciform ligament is the key anatomical landmark separating the right and left hepatic lobes and is visible as a photopenic line on liver-spleen scans.

Question 5

In brain perfusion SPECT imaging, which anatomical structure shows characteristically low perfusion in Alzheimer's disease on a Tc-99m HMPAO scan?

Accepted Answer

Temporoparietal cortex

Answer

Alzheimer's disease classically shows bilateral temporoparietal hypoperfusion on brain SPECT, reflecting the distribution of neurofibrillary tangle pathology.

(NMTCB) Nuclear Medicine Technology Certification Board Practice Test

(NMTCB) Nuclear Medicine Technology Certification Board Practice Test

NMTCB Anatomy & Physiology for Nuclear Medicine 2