TABLE 1.

BrainPET scanner characteristics

	Characteristic	Value
Scintillator	Crystal material	LSO
	Crystal size (mm3)	2.5×2.5×20
	Crystals per detector block	12×12
Photon detector	Hamamatsu APD	8664-55
	Size (mm2)	5×5
	APDs per detector block	3×3
System	No. of detector blocks	192
	No. of crystals	27,648
	Axial FOV (cm)	19.25
	Transaxial FOV (cm)	32
	Gantry inner diameter (cm)	36
	Gantry outer diameter (cm)	60
Dataset	No. of LORs	226,934,784
	No. of sinograms (3D)	1,399
	Axial compression:
	span	9
	maximum ring difference	67
	Sinogram size	256×192
	Image size	256×256
	No. of imaging planes	153
	Recon. voxel size (mm3)	1.25×1.25×1.25