Question

15 multiple choice 1 point

in pet scanning

x-ray images reveal all three planes of the body
a radioactive tracer is used
a nuclear physician performs the ultrasound procedure
gadolinium is used for contrast.

Explanation:

Define PET scanning

Positron Emission Tomography (PET) is a nuclear medicine imaging technique. It detects gamma rays emitted indirectly by a positron-emitting radionuclide (radioactive tracer) introduced into the body.

Evaluate the options

• Option 1: "X-ray images reveal all three planes of the body" describes CT (Computed Tomography) or MRI, not PET.
• Option 2: "a radioactive tracer is used" is correct, as PET scans rely on biologically active radioactive tracers (like FDG).
• Option 3: "a nuclear physician performs the ultrasound procedure" is incorrect because ultrasound uses sound waves, not nuclear imaging.
• Option 4: "gadolinium is used for contrast" is incorrect because gadolinium is a contrast agent primarily used in MRI.

Select the correct option

The correct statement is that a radioactive tracer is used.

Answer:

• (A) X-ray images reveal all three planes of the body
• (B) a radioactive tracer is used (Correct answer)
• (C) a nuclear physician performs the ultrasound procedure
• (D) gadolinium is used for contrast.