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Characteristics of the 2 tracers commonly used in clinical practice.
| Advantages | Radioactive Tracer | Disadvantages |
|---|---|---|
| More available Less expensive Faster Shorter half-life |
99mTc
(ev) |
Not organified Low quality Higher radiation dose (50-250 µCi/kg) |
| Higher contrast Organization process Perchlorate test Low radiation dose (3-10 µCi/kg) |
123I
(os) |
Less available More expensive Slow Long half-life |
Tc-99, 99m-Technetium; I-123, Iodine-123.
