# K173821: LungQ Software

- Pathway: 510(k) (Traditional)
- Applicant: Thirona Corporation
- Decided: Jun 5, 2018 after 169 days
- Product code: JAK (System, X-Ray, Tomography, Computed)
- Device class: 2
- Regulation: 21 CFR 892.1750
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 7 generations back to K954355 (1995). 11 ancestors in all.
3 later devices descend from it; 2 cite it directly.
0 of 15 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K083227: Vida Pulmonary Workstation 2 (PW2), Vida Diagnostics, Inc. (2008) Summary page 5.

## Most influential descendants
- K232412: LungQ v3.0.0 (2024), 1 descendant of its own
- K250766: LungQ 4 (2025), 0 descendants of its own
- K212494: Lung Image Analysis (2021), 0 descendants of its own

## Indications for use
The Thirona LungQ software provides CT values for pulmonary tissue which is essential for providing quantitative support for diagnosis and follow up examination. The LungQ software can be used to support physician in the diagnosis and documentation of pulmonary tissues images (e.g., abnormalities) from CT thoracic datasets. Three-D segmentation and isolation of sub-compartments, volumetric analysis, density evaluations, fissure evaluation, and reporting tools are provided.

Source page: https://510kreport.com/device/K173821
Methodology: https://510kreport.com/methodology