Clinical Study
99mTc-Sestamibi/123I Subtraction SPECT/CT in Parathyroid Scintigraphy: Is Additional Pinhole Imaging Useful?
Table 1
Acquisition parameters for SPECT/CT and pinhole imaging.
| | Acquisition parameter | SPECT/CT | Pinhole |
| | Detector configuration | 180° | — | | Orbit | Body-contour | — | | Distance from the patient skin | — | 10 cm | | Collimators | LEHR | Pinhole, 5 mm opening | | Matrix | matrix | | | Zoom | 1 | 2,19 | | Pixel size | 4.8 mm | | | Acquisition mode | Step-and-Shoot | Static | | Views over 360° | 96 (3,75° per projection) | — | | Time per projection or frame | 33 s | 10 min | | Energy windows | 140 keV 10% | 140 keV 10% | | 167 keV 10% | 167 keV 10% | | Voltage | 130 kVp | — | | Collimation | 2 × 2.5 mm | — | | Rotation time | 0.8 s, | — | | Pitch | 1,5 | — | | Dose modulation | CARE Dose AEC + DOM | — | | Reference exposure | 80 mAs | — |
|
|
