Table 1.

Comparison between standard PET scanner and upright imagers.

Imager	General Feature	Geometry	Motion Friendly	Spatial Resolution	Sensitivity %	Axial Coverage	Support Mechanics
WB PET scanner	Standard of Care	Horizontal Supine or Prone	No	4–5 mm	1	Whole brain	Bed
Helmet_PET	Wearable Feasibility Prototype	Upright	Yes	2–4 mm	0.5	~5 cm	Passive Vertical Weight Support
AMPET First Generation	Dissemination Prototype	Upright	Yes	2–5 mm	3–5	Whole brain	Passive Weight Support
AMPET Next Generation	Dissemination Prototype	Upright	Yes	2–3 mm	5–10	Whole brain	Active Weight Support