Final answer:
Thallium-201 chloride is the radiotracer that exhibits myocardial redistribution, allowing physicians to distinguish between ischemic and infarcted heart tissues during nuclear medicine procedures.
Step-by-step explanation:
The radiotracer that shows myocardial redistribution is Thallium-201 chloride. Technetium-99m (Tc-99m) compounds, such as sestamibi and tetrofosmin, are used to image blood flow to heart tissue but do not demonstrate redistribution. Redistribution is a property unique to Thallium-201, where the tracer washes out of areas with good perfusion and redistributes into areas with initially poor perfusion over time, allowing for the differentiation between ischemic and infarcted tissue.
Thallium-201 becomes concentrated in healthy heart tissue, and its pattern of uptake and redistribution during scanning can provide valuable diagnostic information. Indium-111 octreotide, on the other hand, binds to somatostatin receptors and is typically used in the imaging of neuroendocrine tumors, not for studying heart tissue.