Radionuclide Localization > Requirements > Requirements


1. This technique requires a CT scanner with time available for scheduled procedures.

2. Standard conscious sedation as typically provided by nursing staff for other radiologically guided procedures is employed.

3. A 19-guage outer needle and 22-guage (spinal) inner needle are used for CT guided nodule localization using a coaxial technique.

4. Technetium-99m (Tc-99m) macroaggregated albumin (MAA) prepared on the morning of the procedure is the radiotracer used for injection into the nodule.

5. A standard gamma camera is needed for planar scintigraphic imaging of the thorax after nodule injection to confirm intrathoracic presence of tracer in the approximate location of the nodule.

6. A handheld gamma radioprobe which can be covered with a sterile wrap is needed for use by the surgeon thoracoscopically. An endoscopic straight probe can be used but a thoracoscopic 30-degree angled probe provides additional flexibility for thoracoscopic procedures, given the curvature of the thoracic space.

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