510(k) · Cleared
ClearedRTapp
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Segana, LLC · LLZ System, Image Processing, Radiological
Cleared on Oct 1, 2019 as substantially equivalent to K173636 (Varian Medical Systems, Inc., 2018) after a 106-day review. Its family tree reaches back 13 generations to 1996. 1 later device descends from it.
- Decided
- Oct 1, 2019
- Review
- 106 days
- Class
- Class II
- Product code
- LLZ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 13 generations to K954874 (1996). 72 ancestors in all, the oldest K871859 (1987). 1 later device descends from it, 1 citing it directly.
- Root · 13 generations backK954874 Spectef ProtocolGE Medical Systems · 1996
- 9 generations between
- 3 generations backK151913 MIM-Thin Client (mobile)Mim Software, Inc. · 2016
- 2 generations backK172218 MIM – Y90 DosimetryMim Software, Inc. · 2017
- 1 generation backK173636 VelocityVarian Medical Systems, Inc. · 2018
- This deviceK191610 RTappSegana, LLC · 2019
- Descendant · cites it directly · 0 of its ownK212887 RTappSegana, Inc. · 2021
Show all 13 generations
- Root · 13 generations backK954874 Spectef ProtocolGE Medical Systems · 1996
- 12 generations backK980914 Emory Cardiac Tool BoxEmory University · 1998
- 11 generations backK992450 Emory Cardiac Toolbox* 2.0 Executing on Nuclear Medicine ComputersEmory University · 1999
- 10 generations backK014033 Emory Cardiac Toolbox 2.1 Executing on Nuclear Medicine ComputersSyntermed, Inc. · 2002
- 9 generations backK040141 Emory Cardiac Toolbox Version 2.6Syntermed, Inc. · 2004
- 8 generations backK052379 Mim 3.5 (Circa)Mimvista Corp. · 2005
- 7 generations backK060816 Mim 4.0 (NeuroMimvista Corp. · 2006 · Recalled
- 6 generations backK062163 MimviewerMimvista Corp. · 2006
- 5 generations backK103785 Mobile MimMim Software, Inc. · 2011
- 4 generations backK112930 Mobile MimMim Software, Inc. · 2011
- 3 generations backK151913 MIM-Thin Client (mobile)Mim Software, Inc. · 2016
- 2 generations backK172218 MIM – Y90 DosimetryMim Software, Inc. · 2017
- 1 generation backK173636 VelocityVarian Medical Systems, Inc. · 2018
- This deviceK191610 RTappSegana, LLC · 2019
Most influential descendants
Showing 1 of 1 · See all- K212887RTappSegana, Inc. · 2021 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −13 | K954874 | Spectef Protocol | GE Medical Systems | 1996 | — |
| −12 | K980914 | Emory Cardiac Tool Box | Emory University | 1998 | — |
| −11 | K992450 | Emory Cardiac Toolbox* 2.0 Executing on Nuclear Medicine Computers | Emory University | 1999 | — |
| −10 | K014033 | Emory Cardiac Toolbox 2.1 Executing on Nuclear Medicine Computers | Syntermed, Inc. | 2002 | — |
| −9 | K040141 | Emory Cardiac Toolbox Version 2.6 | Syntermed, Inc. | 2004 | — |
| −8 | K052379 | Mim 3.5 (Circa) | Mimvista Corp. | 2005 | — |
| −7 | K060816 | Mim 4.0 (Neuro | Mimvista Corp. | 2006 | 1 |
| −6 | K062163 | Mimviewer | Mimvista Corp. | 2006 | — |
| −5 | K103785 | Mobile Mim | Mim Software, Inc. | 2011 | — |
| −4 | K112930 | Mobile Mim | Mim Software, Inc. | 2011 | — |
| −3 | K151913 | MIM-Thin Client (mobile) | Mim Software, Inc. | 2016 | — |
| −2 | K172218 | MIM – Y90 Dosimetry | Mim Software, Inc. | 2017 | — |
| −1 | K173636 | Velocity | Varian Medical Systems, Inc. | 2018 | — |
| 0 (this device) | K191610 | RTapp | Segana, LLC | 2019 | — |
| +1 | K212887 | RTapp | Segana, Inc. | 2021 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1987 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 3 | 0 |
| 2003 | 3 | 0 |
| 2004 | 6 | 0 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2011 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2021 | 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 LLZ? 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 LLZ device
- #1 K230955 syngo Application Softwarescore 21.5 · 11 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 |
|---|---|---|---|
| * | K173636 | VelocitySummary page 4…ber: 21 CFR §892.2050 Regulatory Class: II Product Code: LLZ – System, Image Processing, Radiological III. PREDICATE DEVICE Velocity™ 4.0 (K173636, Varian Medical) This predicate was not subject to a design-related recall. No reference devices were used in this subm… | 2018 |
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 |
|---|---|---|---|
| K212887 | RTapp | 2021 | 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 23 years and passes through 7 companies; a new generation was cleared every 1.6 years on median.
- 18 of the 72 ancestors have a recall of any class.
- Of its descendants, K212887 (Segana, Inc., 2021) has gone furthest, with 0 descendants of its own.
- 3 other devices also cite its predicate K173636.
How does its category compare?
All LLZ devicesLLZ System, Image Processing, Radiological: FDA decisions, review times, recalls and adverse event reports over 20 years. 2019, this device’s year, is highlighted.
FDA decisions per year · LLZ
58in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · LLZ
173in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LLZ
11in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LLZ
116in 2025
MAUDE reports naming product code LLZ, 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 | 76 | 36 | 20 | 152 |
| 2008 | 94 | 52 | 32 | 154 |
| 2009 | 70 | 62 | 21 | 145 |
| 2010 | 51 | 98 | 17 | 145 |
| 2011 | 106 | 79 | 30 | 454 |
| 2012 | 82 | 87 | 12 | 266 |
| 2013 | 95 | 84 | 64 | 1,130 |
| 2014 | 78 | 89 | 6 | 15,631 |
| 2015 | 64 | 90 | 16 | 211 |
| 2016 | 82 | 90 | 12 | 290 |
| 2017 | 78 | 107 | 5 | 104 |
| 2018 | 104 | 105 | 7 | 72 |
| 2019 | 74 | 107 | 2 | 88 |
| 2020 | 81 | 115 | 6 | 82 |
| 2021 | 83 | 116 | 3 | 70 |
| 2022 | 65 | 137 | 4 | 28 |
| 2023 | 87 | 157 | 8 | 26 |
| 2024 | 62 | 131 | 6 | 42 |
| 2025 | 58 | 173 | 11 | 116 |
| 2026 | 45 | 110 | 14 | — |
What is it indicated for?
RTapp™ is a stand-alone software that provides a means for comparison of imaging data that is DICOM compliant. It allows the registration and display of medical images as an aid during use by radiation oncology.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K191610 · printed Nov 6, 2026
Cite this page
510(k) Report. “K191610: RTapp.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K191610
Report an extraction error
Are you the manufacturer?
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