510(k) · Cleared
ClearedAcroDTI Visualizer
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Acroviz, Inc. · LLZ System, Image Processing, Radiological
Cleared on Sep 9, 2020 as substantially equivalent to K163294 (Siemens Medical Solutions USA, Inc., 2017) and 1 other predicate after a 58-day review. Its family tree reaches back 14 generations to 1997. 5 of the 201 devices in its family, counting itself, have a Class I recall.
- Decided
- Sep 9, 2020
- Review
- 58 days
- Class
- Class II
- Product code
- LLZ
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 14 generations to K971684 (1997). 200 ancestors in all, the oldest K837107 (1983). No later device cites it as a predicate yet. 5 of the 201 devices in this family, counting this one, have a Class I recall.
- Root · 14 generations backK971684 Magnetom Project 047 System (Numaris 3.5 Software)Siemens Medical Solutions USA, Inc. · 1997 · Recalled
- 10 generations between
- 3 generations backK133401 Syno MR Neurology, Syngo MR Oncology, Syngo. MR Brevis, Syngo MMR…Siemens Medical Solutions USA, Inc. · 2014
- 2 generations backK151353 syngo.MR Neurology, syngo.MR OncologySiemens Medical Solutions USA, Inc. · 2015
- 1 generation backK163294 syngo.MR General, syngo.MR Cardiology, syngo.MR NeurologySiemens Medical Solutions USA, Inc. · 2017
- This deviceK201948 AcroDTI VisualizerAcroviz, Inc. · 2020
Show all 14 generations
- Root · 14 generations backK971684 Magnetom Project 047 System (Numaris 3.5 Software)Siemens Medical Solutions USA, Inc. · 1997 · Recalled
- 13 generations backK032428 Magnetom Avanto MR SystemSiemens Medical Solutions USA, Inc. · 2003 · Recalled
- 12 generations backK041112 Magnetom Espree SystemSiemens Medical Solutions USA, Inc. · 2004 · Recalled
- 11 generations backK052164 Magnetom Systems with Software Syngo MR 2006ASiemens Medical Solutions USA, Inc. · 2005
- 10 generations backK062454 Magnetom Systems - I-Class and T-Class ReleasesSiemens Medi Cal Solutions, Inc. · 2006
- 9 generations backK072237 Magnetom VerioSiemens Medical Solutions USA, Inc. · 2007 · Recalled (Class I)
- 8 generations backK082427 Syngo MR B17Siemens Medical Solutions USA, Inc. · 2008
- 7 generations backK101347 Magnetom Aera; Magnetom SkyraSiemens Medical Solutions USA, Inc. · 2010 · Recalled (Class I)
- 6 generations backK111242 Magnetom Aera and Magnetom SkyraSiemens Medical Solutions USA, Inc. · 2011 · Recalled
- 5 generations backK121434 Software Syngo MR D13A for the Magnetom Systems…Siemens Medi Cal Solutions, Inc. · 2012 · Recalled (Class I)
- 4 generations backK130749 Syngo.MR General; Syngo.MR Cardiology; Syngo.MR VascularSiemens Medical Solutions USA, Inc. · 2013
- 3 generations backK133401 Syno MR Neurology, Syngo MR Oncology, Syngo. MR Brevis, Syngo MMR…Siemens Medical Solutions USA, Inc. · 2014
- 2 generations backK151353 syngo.MR Neurology, syngo.MR OncologySiemens Medical Solutions USA, Inc. · 2015
- 1 generation backK163294 syngo.MR General, syngo.MR Cardiology, syngo.MR NeurologySiemens Medical Solutions USA, Inc. · 2017
- This deviceK201948 AcroDTI VisualizerAcroviz, Inc. · 2020
Class I recalls in this family
- K153343 MAGNETOM Aera, MAGNETOM Skyra, MAGNETOM Prisma…2 generations back · 2016
- K151579 MAGNETOM Aera (24-channel), MAGNETOM Avanto fit…3 generations back · 2015
- K121434 Software Syngo MR D13A for the Magnetom Systems…3 generations back · 2012
- K101347 Magnetom Aera; Magnetom Skyra5 generations back · 2010
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −14 | K971684 | Magnetom Project 047 System (Numaris 3.5 Software) | Siemens Medical Solutions USA, Inc. | 1997 | 4 |
| −13 | K032428 | Magnetom Avanto MR System | Siemens Medical Solutions USA, Inc. | 2003 | 4 |
| −12 | K041112 | Magnetom Espree System | Siemens Medical Solutions USA, Inc. | 2004 | 4 |
| −11 | K052164 | Magnetom Systems with Software Syngo MR 2006A | Siemens Medical Solutions USA, Inc. | 2005 | — |
| −10 | K062454 | Magnetom Systems - I-Class and T-Class Releases | Siemens Medi Cal Solutions, Inc. | 2006 | — |
| −9 | K072237 | Magnetom Verio | Siemens Medical Solutions USA, Inc. | 2007 | Class I |
| −8 | K082427 | Syngo MR B17 | Siemens Medical Solutions USA, Inc. | 2008 | — |
| −7 | K101347 | Magnetom Aera; Magnetom Skyra | Siemens Medical Solutions USA, Inc. | 2010 | Class I |
| −6 | K111242 | Magnetom Aera and Magnetom Skyra | Siemens Medical Solutions USA, Inc. | 2011 | 3 |
| −5 | K121434 | Software Syngo MR D13A for the Magnetom Systems Aera/Skyra/Avanto/Verio | Siemens Medi Cal Solutions, Inc. | 2012 | Class I |
| −4 | K130749 | Syngo.MR General; Syngo.MR Cardiology; Syngo.MR Vascular | Siemens Medical Solutions USA, Inc. | 2013 | — |
| −3 | K133401 | Syno MR Neurology, Syngo MR Oncology, Syngo. MR Brevis, Syngo MMR General | Siemens Medical Solutions USA, Inc. | 2014 | — |
| −2 | K151353 | syngo.MR Neurology, syngo.MR Oncology | Siemens Medical Solutions USA, Inc. | 2015 | — |
| −1 | K163294 | syngo.MR General, syngo.MR Cardiology, syngo.MR Neurology | Siemens Medical Solutions USA, Inc. | 2017 | — |
| 0 (this device) | K201948 | AcroDTI Visualizer | Acroviz, Inc. | 2020 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1983 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 19 | 0 |
| 2002 | 15 | 0 |
| 2003 | 8 | 0 |
| 2004 | 15 | 0 |
| 2005 | 10 | 0 |
| 2006 | 10 | 0 |
| 2007 | 9 | 0 |
| 2008 | 4 | 0 |
| 2009 | 6 | 0 |
| 2010 | 2 | 0 |
| 2011 | 4 | 0 |
| 2012 | 3 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 2 | 1 |
| 2017 | 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.
5 devices in this family have a Class I recall. 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? (2)
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 |
|---|---|---|---|
| * | K163294 | syngo.MR General, syngo.MR Cardiology, syngo.MR NeurologySummary page 5…r syngo.MR General; Software Siemens Medical syngo.MR Cardiology; syngo.MR Solutions USA, K163294 syngo.MR Neurology VB20 Inc. Carestream Vue Carestr… | 2017 |
| * | K170580 | Carestream Vue PACSSummary page 5…Inc. Carestream Vue Carestream Carestream K170580 PACS Vue PACS Health, Inc. Performance Data The following performance d… | 2017 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (5 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K153343MAGNETOM Aera, MAGNETOM Skyra, MAGNETOM Prisma, MAGNETOM Prisma fitSiemens Medi Cal Solutions, Inc. · 2016 · 2 generations back · ◆ in the 2016 ancestors bar of FIG. 11 Class I recall
- K151579MAGNETOM Aera (24-channel), MAGNETOM Avanto fit, MAGNETOM Skyra fit, MAGNETOM Prisma, MAGNETOM Prisma fitSiemens Medical Solutions USA, Inc. · 2015 · 3 generations back · ◆ in the 2015 ancestors bar of FIG. 12 Class I recalls
- K121434Software Syngo MR D13A for the Magnetom Systems Aera/Skyra/Avanto/VerioSiemens Medi Cal Solutions, Inc. · 2012 · 3 generations back · ◆ on the line of descent in FIG. 12 Class I recalls
- K101347Magnetom Aera; Magnetom SkyraSiemens Medical Solutions USA, Inc. · 2010 · 5 generations back · ◆ on the line of descent in FIG. 12 Class I recalls
- K072237Magnetom VerioSiemens Medical Solutions USA, Inc. · 2007 · 5 generations back · ◆ on the line of descent in FIG. 11 Class I recall
What does this lineage say?
- The line of descent spans 23 years and passes through 3 companies; a new generation was cleared every 1.1 years on median.
- 48 of the 200 ancestors have a recall of any class; 5 have a Class I recall.
- 1 other device also cites its predicate K163294.
How does its category compare?
All LLZ devicesLLZ System, Image Processing, Radiological: FDA decisions, review times, recalls and adverse event reports over 20 years. 2020, 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?
AcroDTI Visualizer is an image processing software that allows the user to calculate and display DTI from diffusion MRI (dMRl) data. This software is intended to be utilized by trained physicians to visually evaluate the DTI index maps.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K201948 · printed Nov 6, 2026
Cite this page
510(k) Report. “K201948: AcroDTI Visualizer.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K201948
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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