510(k) · Cleared
ClearedImbio PHA (4.0.0)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Imbio, Inc. · QIH Automated Radiological Image Processing Software
Cleared on Aug 30, 2024 as substantially equivalent to K203256 (Imbio, LLC, 2021) after a 65-day review. Its family tree reaches back 8 generations to 1995.
- Decided
- Aug 30, 2024
- Review
- 65 days
- Class
- Class II
- Product code
- QIH
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 8 generations to K945512 (1995). 17 ancestors in all, the oldest K945428 (1995). No later device cites it as a predicate yet.
- Root · 8 generations backK945512 HRSW Option for CT Twin FlashElscint, Inc. · 1995
- 7 generations backK970980 Cardiac Scoring for CT ScannersElscint, Inc. · 1997
- 6 generations backK982004 CT Coronary Artery Calcification Scoring (Cacs) Option for Advantage…General Electric Co. · 1998
- 5 generations backK020929 Smartscore 3.5; Smartscore 4.0; Smartscore 4.5GE Medical Systems · 2002
- 4 generations backK072737 CSCS-001A Calcium Scoring PackageToshiba America Medical Systems, In.C · 2007
- 3 generations backK083446 Cardiac Function Analysis, Calcium ScoringZiosoft, Inc. · 2009
- 2 generations backK111373 CT42 Cardiac Computed Tomography (CT) SoftwareCircle Cardiovascular Imaging, Inc. · 2011
- 1 generation backK203256 Imbio RV/LV SoftwareImbio, LLC · 2021
- This deviceK241847 Imbio PHA (4.0.0)Imbio, Inc. · 2024
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −8 | K945512 | HRSW Option for CT Twin Flash | Elscint, Inc. | 1995 | — |
| −7 | K970980 | Cardiac Scoring for CT Scanners | Elscint, Inc. | 1997 | — |
| −6 | K982004 | CT Coronary Artery Calcification Scoring (Cacs) Option for Advantage Windows | General Electric Co. | 1998 | — |
| −5 | K020929 | Smartscore 3.5; Smartscore 4.0; Smartscore 4.5 | GE Medical Systems | 2002 | — |
| −4 | K072737 | CSCS-001A Calcium Scoring Package | Toshiba America Medical Systems, In.C | 2007 | — |
| −3 | K083446 | Cardiac Function Analysis, Calcium Scoring | Ziosoft, Inc. | 2009 | — |
| −2 | K111373 | CT42 Cardiac Computed Tomography (CT) Software | Circle Cardiovascular Imaging, Inc. | 2011 | — |
| −1 | K203256 | Imbio RV/LV Software | Imbio, LLC | 2021 | — |
| 0 (this device) | K241847 | Imbio PHA (4.0.0) | Imbio, Inc. | 2024 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in QIH? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new QIH device
- #1 K213998 cvi42 Auto Imaging Software Applicationscore 23.5 · 7 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K203256 | Imbio RV/LV SoftwareSummary page 4…892.2050 Product Code(s) QIH I Legally Marketed Predicate Devices 21 CFR 807.92(a)(3) Predicate # Predicate Trade Name (Primary Predicate is listed first) Product Code K203256 Imbio RV/LV QIH I Device Description Summary 21 CFR 807.92(a)(4) Imbio's PHA Software is a set of medical image… | 2021 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 29 years and passes through 8 companies; a new generation was cleared every 3.5 years on median.
- None of the 17 ancestors has a recall.
- 5 other devices also cite its predicate K203256.
How does its category compare?
All QIH devicesQIH Automated Radiological Image Processing Software: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, this device’s year, is highlighted.
FDA decisions per year · QIH
94in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · QIH
150in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · QIH
1so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · QIH
4in 2025
MAUDE reports naming product code QIH, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 0 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 2 | — | 0 | 0 |
| 2020 | 11 | 145 | 0 | 0 |
| 2021 | 19 | 125 | 0 | 0 |
| 2022 | 25 | 134 | 0 | 0 |
| 2023 | 45 | 151 | 0 | 0 |
| 2024 | 64 | 141 | 0 | 2 |
| 2025 | 94 | 150 | 0 | 4 |
| 2026 | 78 | 130 | 1 | — |
What is it indicated for?
The Imbio PHA Software device is designed to measure the maximal diameters of the right and left ventricles of the heart, the main pulmonary artery, and the ascending aorta from a volumetric CTPA acquisition and report the RV/LV and Pa/Ao ratios. PHA analyzes cases using an artificial intelligence algorithm to identify the location and measurements of the anatomy. The PHA software provides the user with annotated images showing measurements. Its results are not intended to be used on a stand-alone basis for clinical decision-making or otherwise preclude clinical assessment of CTPA cases.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K241847 · printed Nov 6, 2026
Cite this page
510(k) Report. “K241847: Imbio PHA (4.0.0).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K241847
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026