Table 2.
Summary of characteristics and performances of small gamma cameras.
| Gamma camera | Detector | FOV | Size detector head | Energy (KeV) | Energy resolution (FWHM) | 99mTc sensitivity |
|---|---|---|---|---|---|---|
| CarollReS (56–58) | Gd2SiO5 (Ce) PS-PMT | 50 × 50 mm | 78 × 78 × 275 mm | 45%, 57Co | 1,000 cps/MBq (theoretical) | |
| eZ-SCOPE® (59) | CdZnTe | 32 × 32 mm | 60 × 60 × 220 mm | 71–364 | 8.6%, 99mTc | 184 cps/MBq |
| GE camera (60, 61) | CdZnTe | 40 × 40 mm | Height 150 mm | 40–200 | 8%, 99mTc | 100 cps/MBq |
| Imaging probe (62) | CsI (Tl) PS-PMT | 49 × 49 mm | 20%, 99mTc | 210 cps/MBq | ||
| LumaGEM® (63) | CsI (Na) PS-PMT | 20 × 20 mm | 30–300 | >20%, 99mTc | ||
| MediProbe (64, 65) | CdTe | 14.08 × 14.08 mm | 200 × 70 × 30 mm | 6.5–33 cps/MBq (5 cm source-to-aperture distance) | ||
| Minicam® | CdTe | 49 × 49 mm | Φ 95 mm height 150 mm | 20–200 | ||
| Minicamll® | CdTe | 40 × 40 mm | 70 × 170 × 250 mm | 30–300 | 5–7%, 99mTc | |
| POCI (66) | YAP (Ce), IPSD | Φ 24 mm | Tc-99m, I-125, In-111 | 38%, 57Co | 200 cps/MBq | |
| Second POCI (67) | CsI (Na) IPSD | Φ 40 mm | Φ 95 mm height 90 mm | 105–175 | 32%, 99mTc | 290 cps/MBq |
| Sentinella 102® (68) | CsI (Na) PS-PMT | 40 × 40 mm | 8 × 9 × 15 mm | 50–200 | 15.9%, 99mTc | 90–900 cps/MBq (1 cm source-to-aperture distance) 27–72 cps/MBq (10 cm source-to-aperture distance) |
| SSGC clinical-type (69) | CdTe | 44.8 × 44.8 mm | 82 × 86 × 205 mm | Max 550 | 6.9%, 99mTc | 150 cps/MBq (high-resolution collimator) ramya1,600 cps/MBq (high-sensitivity collimator) |
| SSGC proto-type (70, 71) | CdTe | 44.8 × 44.8 mm | 152 × 166 × 65 mm | Max 550 | 7.8%, 99mTc | 300 cps/MBq |
FOV, field of view; FWHM, full-width half maximum of the 99mTc (140 KeV) or 57Co (122 KeV) photopeak; SSGC, Small CdTe Gamma Camera; Gd2SiO5 (Ce) PS-PMT, Gadolinium oxyorthsilicate doped with cerium coupled with position sensitive photomultiplier tube; CdZnTe, cadmium zinc telluride; CsI (Tl) PS-PMT, Thallium doped cesium iodide coupled with coupled with position sensitive photomultiplier tube; CsI (Na) PS-PMT, sodium-doped cesium iodide coupled with position sensitive photomultiplier tube; CdTe, cadmium telluride; YAP (Ce), IPSD, Cerium doped Yttrium Aluminium Perovskite coupled with intensified position-sensitive diode; cps, counts per second.