# K091403: MOD1T Compensators for Radiation Beam Therapy

- Pathway: 510(k) (Traditional)
- Applicant: Oncology Tech, LLC
- Decided: Jul 29, 2009 after 78 days
- Product code: IXI (Block, Beam-Shaping, Radiation Therapy)
- Device class: 2
- Regulation: 21 CFR 892.5710
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 4 generations back to K000137 (2000). 8 ancestors in all.
No later device cites it as a predicate yet.
0 of 9 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K062781: MOD1 Compensators for Radiation Beam Therapy, Symtium Corporation (2006) Summary page 1.

## Indications for use
The Oncology Tech precision milled brass/aluminum compensators with tungsten fillings in the compensator walls are used for modulation of beam intensity during radiation therapy.

Source page: https://510kreport.com/device/K091403
Methodology: https://510kreport.com/methodology