Table 2 Image acquisition and correction methods of FMZ PET and IMZ PECT study
FMZ PET study | IMZ SPECT study | |
|---|---|---|
Tracers | C-11 flumazenil | I-123 iomazenil |
Acquisition system | BGO PET system (Asahi-Siemens ECAT EXACT HR+) | Triple-head gamma camera with low-energy high-resolution fan-beam collimators (Toshiba GCA-9300) |
Scatter correction | Single scatter simulation method | No scattter correction |
Attenuation correction | Measured with transmission scan | Chang’s method |
Reconstruction method | Fourier rebinning algorithm + direct-inversion Fourier transformation | Filtered back projection |
Image acquisition | 60-min dynamic acquisition with 3D mode | Static image (20 to 40 min and 120 to 140 min after the tracer injection) |
FWHM (mm) after reconstruction | 6.4 | 10 |