# K972451: Coregistration Function

- Pathway: 510(k) (Traditional)
- Applicant: Nomos Corp.
- Decided: Jan 22, 1998 after 206 days
- Product code: IYE (Accelerator, Linear, Medical)
- 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: 2 generations back to K884261 (1989). 5 ancestors in all.
5 later devices descend from it; 1 cites it directly.
0 of 11 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K960071: Imagefusion, Radionics Software Applications, Inc. (1996) Summary page 1.
- K940663: Peacock Plan, Nomos Corp. (1996) Summary page 1.

## Most influential descendants
- K032209: Nomos Corvus 5.0M (2003), 4 descendants of its own
- K100092: Corvus Radiation Therapy Planning System (2010), 3 descendants of its own
- K151469: CORVUS Radiation Therapy Planning System (2015), 2 descendants of its own
- K201350: Corvus (2020), 1 descendant of its own
- K211034: Corvus Radiation Therapy Planning System (2021), 0 descendants of its own

## Indications for use
The Coregistration function is intended for use as part of an RT planning system (such as CORVUS) in procedures which could benefit from the ability to correlate between multiple image sets regardless of the modality used for scanning. In addition this function may be used to coregister earlier patient scans without a localization system. The Coregistration function enables the use of complementary image data while maintaining the geometric accuracy and tissue density information from the CT.

Source page: https://510kreport.com/device/K972451
Methodology: https://510kreport.com/methodology