510(k) · Cleared
ClearedQT Scanner 2000 Model A
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Qt Imaging, Inc. · IYO System, Imaging, Pulsed Echo, Ultrasonic
Cleared on Aug 31, 2022 as substantially equivalent to K190646 (Qt Ultrasound, LLC, 2019) after a 153-day review. Its family tree reaches back 21 generations to 1995. 1 later device descends from it.
- Decided
- Aug 31, 2022
- Review
- 153 days
- Class
- Class II
- Product code
- IYO
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 21 generations to K935595 (1995). 145 ancestors in all, the oldest K894632 (1989). 1 later device descends from it, 1 citing it directly.
- Root · 21 generations backK935595 Acuson Model 3001Acuson Corp. · 1995
- 17 generations between
- 3 generations backK162372 QT Ultrasound Breast Scanner-1Qt Ultrasound, LLC · 2017
- 2 generations backK182213 QT Ultrasound Breast Scanner - 1Qt Ultrasound, LLC · 2018
- 1 generation backK190646 QT Scanner 2000 Model AQt Ultrasound, LLC · 2019
- This deviceK220933 QT Scanner 2000 Model AQt Imaging, Inc. · 2022
- Descendant · cites it directly · 0 of its ownK253898 QT Scanner 2000 Model AQT Imaging Holdings, Inc. · 2026
Show all 21 generations
- Root · 21 generations backK935595 Acuson Model 3001Acuson Corp. · 1995
- 20 generations backK973767 Harmonic Imaging with ContrastAcuson Corp. · 1997
- 19 generations backK022567 Sequoia Signature II Diagnostic Ultrasound SystemAcuson Corp. · 2002
- 18 generations backK032114 Sequoia 8.0 Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2003
- 17 generations backK041319 Sequoia Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2004
- 16 generations backK042770 Modification to Acuson CV70 Cardiovascular SystemSiemens Medical Solutions USA, Inc. · 2004 · Recalled
- 15 generations backK050240 Modification to Acuson CV70 Cardiovascular SystemSiemens Medical Solutions USA, Inc. · 2005 · Recalled
- 14 generations backK052894 Sonoline G60 S Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2005 · Recalled
- 13 generations backK063138 Modification to Acuson Antares Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2006
- 12 generations backK063803 Acuson Antares Diagnostic Ultrasound SystemSiemens Medical Solutions USA, Inc., Ultrasound DI · 2007 · Recalled
- 11 generations backK072786 Acuson S2000 Ultrasound SystemSiemens Medical Solutions USA, Inc. · 2007
- 10 generations backK083095 Sonixtouch Ultrasound SystemUltrasonix Medical Corporation · 2008
- 9 generations backK092271 GE Logiq E9 BT2010 Diagnostic Ultrasound System, Model 5205000-3…GE Healthcare · 2009 · Recalled
- 8 generations backK110870 Aplio Diagnostic Ultrasound System; Aplio Diagnostic Ultrasound…Toshiba America Medical Systems, In.C · 2011
- 7 generations backK121422 Aplio 500/400/300 Diagnostic Ultrasound SystemToshiba Medical Systems Coporation, Japan · 2012
- 6 generations backK123992 Aplio 500/400/300 V3.0Toshibamedical Systems Corporation · 2013
- 5 generations backK133761 Aplio 500/400/300 Diagnostic Ultrasound System V4.0Toshibamedical Systems Corporation · 2014
- 4 generations backK142517 SoftVueDelphinus Medical Technologies, Inc. · 2014
- 3 generations backK162372 QT Ultrasound Breast Scanner-1Qt Ultrasound, LLC · 2017
- 2 generations backK182213 QT Ultrasound Breast Scanner - 1Qt Ultrasound, LLC · 2018
- 1 generation backK190646 QT Scanner 2000 Model AQt Ultrasound, LLC · 2019
- This deviceK220933 QT Scanner 2000 Model AQt Imaging, Inc. · 2022
Most influential descendants
Showing 1 of 1 · See all- K253898QT Scanner 2000 Model AQT Imaging Holdings, Inc. · 2026 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −21 | K935595 | Acuson Model 3001 | Acuson Corp. | 1995 | — |
| −20 | K973767 | Harmonic Imaging with Contrast | Acuson Corp. | 1997 | — |
| −19 | K022567 | Sequoia Signature II Diagnostic Ultrasound System | Acuson Corp. | 2002 | — |
| −18 | K032114 | Sequoia 8.0 Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2003 | — |
| −17 | K041319 | Sequoia Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc. | 2004 | — |
| −16 | K042770 | Modification to Acuson CV70 Cardiovascular System | Siemens Medical Solutions USA, Inc. | 2004 | 1 |
| −15 | K050240 | Modification to Acuson CV70 Cardiovascular System | Siemens Medical Solutions USA, Inc. | 2005 | 1 |
| −14 | K052894 | Sonoline G60 S Ultrasound System | Siemens Medical Solutions USA, Inc. | 2005 | 1 |
| −13 | K063138 | Modification to Acuson Antares Ultrasound System | Siemens Medical Solutions USA, Inc. | 2006 | — |
| −12 | K063803 | Acuson Antares Diagnostic Ultrasound System | Siemens Medical Solutions USA, Inc., Ultrasound DI | 2007 | 9 |
| −11 | K072786 | Acuson S2000 Ultrasound System | Siemens Medical Solutions USA, Inc. | 2007 | — |
| −10 | K083095 | Sonixtouch Ultrasound System | Ultrasonix Medical Corporation | 2008 | — |
| −9 | K092271 | GE Logiq E9 BT2010 Diagnostic Ultrasound System, Model 5205000-3, 5205000-4 | GE Healthcare | 2009 | 1 |
| −8 | K110870 | Aplio Diagnostic Ultrasound System; Aplio Diagnostic Ultrasound System; Aplio… | Toshiba America Medical Systems, In.C | 2011 | — |
| −7 | K121422 | Aplio 500/400/300 Diagnostic Ultrasound System | Toshiba Medical Systems Coporation, Japan | 2012 | — |
| −6 | K123992 | Aplio 500/400/300 V3.0 | Toshibamedical Systems Corporation | 2013 | — |
| −5 | K133761 | Aplio 500/400/300 Diagnostic Ultrasound System V4.0 | Toshibamedical Systems Corporation | 2014 | — |
| −4 | K142517 | SoftVue | Delphinus Medical Technologies, Inc. | 2014 | — |
| −3 | K162372 | QT Ultrasound Breast Scanner-1 | Qt Ultrasound, LLC | 2017 | — |
| −2 | K182213 | QT Ultrasound Breast Scanner - 1 | Qt Ultrasound, LLC | 2018 | — |
| −1 | K190646 | QT Scanner 2000 Model A | Qt Ultrasound, LLC | 2019 | — |
| 0 (this device) | K220933 | QT Scanner 2000 Model A | Qt Imaging, Inc. | 2022 | — |
| +1 | K253898 | QT Scanner 2000 Model A | QT Imaging Holdings, Inc. | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1989 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 0 |
| 2002 | 8 | 0 |
| 2003 | 12 | 0 |
| 2004 | 12 | 0 |
| 2005 | 10 | 0 |
| 2006 | 9 | 0 |
| 2007 | 3 | 0 |
| 2008 | 8 | 0 |
| 2009 | 1 | 0 |
| 2011 | 1 | 0 |
| 2013 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2026 | 1 | 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 IYO? 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 IYO device
- #1 K243937 Accuro 3Sscore 20.5 · 18 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 |
|---|---|---|---|
| * | K190646 | QT Scanner 2000 Model ASummary page 5…rocessing System Product Code: IYO, ITX, QIH 510(k) SUMMARY PREDICATE DEVICES [807.92(a)(3)] Primary predicate device: QT Ultrasound Breast Scanner-1 (K190646) Reference device: syngo.via MI Workflows (K211459) DEVICE DESCRIPTION [807.92(a)(4)] The QT Scanner 2000 Model A (“QT Scanner”)… | 2019 |
| † | K211459 | syngo.via MI WorkFlows, Scenium, syngo MBF | 2021 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K253898 | QT Scanner 2000 Model A | 2026 | 0 |
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 27 years and passes through 11 companies; a new generation was cleared every 12 months on median.
- 30 of the 145 ancestors have a recall of any class.
- Of its descendants, K253898 (QT Imaging Holdings, Inc., 2026) has gone furthest, with 0 descendants of its own.
How does its category compare?
All IYO devicesIYO System, Imaging, Pulsed Echo, Ultrasonic: FDA decisions, review times, recalls and adverse event reports over 20 years. 2022, this device’s year, is highlighted.
FDA decisions per year · IYO
7in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · IYO
171in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · IYO
1in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · IYO
485in 2025
MAUDE reports naming product code IYO, 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 | 20 | 17 | 4 | 39 |
| 2008 | 14 | 36 | 5 | 20 |
| 2009 | 13 | 79 | 9 | 27 |
| 2010 | 15 | 113 | 8 | 20 |
| 2011 | 11 | 69 | 0 | 58 |
| 2012 | 15 | 68 | 2 | 78 |
| 2013 | 17 | 50 | 3 | 436 |
| 2014 | 14 | 63 | 2 | 304 |
| 2015 | 19 | 46 | 1 | 268 |
| 2016 | 10 | 36 | 0 | 254 |
| 2017 | 19 | 72 | 0 | 238 |
| 2018 | 14 | 56 | 1 | 368 |
| 2019 | 13 | 59 | 1 | 537 |
| 2020 | 11 | 57 | 0 | 498 |
| 2021 | 15 | 64 | 11 | 617 |
| 2022 | 5 | 190 | 1 | 511 |
| 2023 | 11 | 177 | 0 | 527 |
| 2024 | 10 | 220 | 0 | 640 |
| 2025 | 7 | 171 | 0 | 485 |
| 2026 | 10 | 139 | 1 | — |
What is it indicated for?
The QT Scanner 2000 Model A is for use as an ultrasonic imaging system to provide reflection-mode and transmission-mode images of a patient's breast. The QT Scanner 2000 Model A software also calculates the breast fibroglandular tissue volume (FGV) value and the ratio of FGV to total breast volume (TBV) value as determined from reflection-mode and transmission-mode ultrasound images of a patient's breast. The device is not intended to be used as a replacement for screening mammography.
The QT Scanner 2000 Model A is indicated for use by trained healthcare professionals in environments where healthcare is provided to enable breast imaging in adult patients.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K220933 · printed Nov 4, 2026
Cite this page
510(k) Report. “K220933: QT Scanner 2000 Model A.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K220933
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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