# K112776: Tomotherapy Treatment System Fast Optimizer

- Pathway: 510(k) (Traditional)
- Applicant: Tomotherapy Incorporated
- Decided: Dec 22, 2011 after 87 days
- Product code: MUJ (System, Planning, Radiation Therapy Treatment)
- Device class: 2
- Regulation: 21 CFR 892.5050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 9 generations back to K914698 (1992). 25 ancestors in all.
11 later devices descend from it; 1 cites it directly.
0 of 37 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K082005: Modification to HI-Art Treatment System, Tomotherapy Incorporated (2008) Summary page 1.

## Most influential descendants
- K121934: Tomotherapy Treatment System (2012), 10 descendants of its own
- K161146: Radixact Treatment Delivery System (2016), 3 descendants of its own
- K161136: Precision Treatment Planning System (2016), 2 descendants of its own
- K202412: ClearRT Helical kVCT for the Radixact Treatment Delivery System (2020), 1 descendant of its own
- K171086: Accuray Precision Treatment Planning System (2017), 1 descendant of its own

## Indications for use
The TomoTherapy Treatment System is intended to be used as an integrated system for the planning and precise delivery of radiation therapy, stereotactic radiotherapy, or stereotactic radiosurgery to tumors or other targeted tissues while minimizing the delivery of radiation to vital healthy tissue. The megavoltage x-ray radiation is delivered in a rotational, non-rotational, modulated (IMRT), or non-modulated (non-IMRT/three dimensional conformal) format in accordance with the physician prescribed and approved plan.

Source page: https://510kreport.com/device/K112776
Methodology: https://510kreport.com/methodology