Devices descending from K971980

2 later devices reach MCD-AC through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K991565	Tac-2, Transmission Attenuation Correction and DST, DST-XL Gamma Cameras and Vision…	Smv America	1999	0	—
+1	K991535	Convergence CDR for Hitachi Spectradigital V250DSP Gamma Cameras	Hitachi Medical Corp. of America	1999	0	—