Devices descending from K974256

3 later devices reach Ecat Pet Scanners through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K981027	E.Cam Lso 311 Pet/Spect System	Cti Pet Systems, Inc.	1998	2	—
+2	K040933	Ecat HRRT	Cti Pet Systems, Inc.	2004	0	—
+2	K021633	Ecat Vision Pet Scanner, Models 3000 & 5000	Cti Pet Systems, Inc.	2002	0	—