# K052344: Color LCD Monitor, Model Radioforce R31 & R31-C

- Pathway: 510(k) (Special)
- Applicant: Eizo Nanao Corporation
- Decided: Sep 14, 2005 after 19 days
- Product code: LLZ (System, Image Processing, Radiological)
- Device class: 2
- Regulation: 21 CFR 892.2050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K033466 (2004). 1 ancestor in all.
45 later devices descend from it; 4 cite it directly.
0 of 47 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K033466: Color LCD Display, Model Radiforce R22, Eizo Nanao Corporation (2004) Summary page 1.

## Most influential descendants
- K090045: Color LCD Monitor, Radiforce RX320 (2009), 35 descendants of its own
- K113562: 3MP Color LCD Monitor, Radiforce RX340 (2012), 34 descendants of its own
- K153354: 3MP Color LCD Monitor, RadiForce RX350 (2016), 17 descendants of its own
- K134002: 6MP Color LCD Monitor, Radiforce RX650 (2014), 14 descendants of its own
- K182591: RadiForce RX360, RX360-AR (2018), 7 descendants of its own

## Indications for use
RadiForce R31 is intended to be used in displaying and viewing digital images for diagnosis of X-ray or MRI, etc. by trained medical practitioners. These devices must not be used for digital mammography system.

Source page: https://510kreport.com/device/K052344
Methodology: https://510kreport.com/methodology