MEDLINE (Ovid) Search Strategy for RCTs (1950 to August 2010)
| No. | Searches | Results |
| 1 | positron emission tomography | 16,699 |
| 2 | (pet or petscan* or positron).ab,ti. | 47,103 |
| 3 | ((pet* or tracer*) and (deoxy* or de oxy* or fluor* or fdg* or amino*)).ab,ti. | 24,966 |
| 4 | or/1–3 | 60,174 |
| 5 | randomized controlled trial.pt. | 297,967 |
| 6 | (randomized or randomised).ab,ti. | 270,389 |
| 7 | or/5–6 | 405,562 |
| 8 | and/4,7 | 1,046 |