Devices descending from K913174

3 later devices reach Varian Clinac 600SR through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K023636	Blocking Tray	Southeastern Radiation Products, Inc.	2002	0	—
+1	K984563	The Cyberknife System for Stereotactic Radiosurgery/Radiotherapy	Accuray, Inc.	1999	1	—
+2	K143560	CygneX I System	Accuthera, Inc.	2015	0	—