510(k) · Cleared
ClearedMicsi-RMT
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Microstructure Imaging, Inc. · LLZ System, Image Processing, Radiological
Cleared on Jul 17, 2024 as substantially equivalent to K191688 (Subtle Medical, Inc., 2019) after an 85-day review. Its family tree reaches back 5 generations to 1992.
- Decided
- Jul 17, 2024
- Review
- 85 days
- Class
- Class II
- Product code
- LLZ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 5 generations to K922470 (1992). No later device cites it as a predicate yet.
- Root · 5 generations backK922470 Ies, Image Enhancement SystemOpen Mri, Inc. · 1992
- 4 generations backK993802 Sharpview Image Enhancement SystemContext Vision AB · 2000
- 3 generations backK024028 Sharp View Image Enhancement SystemContext Vision AB · 2003
- 2 generations backK172768 ZOOMZetta Medical Technologies, LLC · 2018
- 1 generation backK191688 SubtleMRSubtle Medical, Inc. · 2019
- This deviceK241121 Micsi-RMTMicrostructure Imaging, Inc. · 2024
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −5 | K922470 | Ies, Image Enhancement System | Open Mri, Inc. | 1992 | — |
| −4 | K993802 | Sharpview Image Enhancement System | Context Vision AB | 2000 | — |
| −3 | K024028 | Sharp View Image Enhancement System | Context Vision AB | 2003 | — |
| −2 | K172768 | ZOOM | Zetta Medical Technologies, LLC | 2018 | — |
| −1 | K191688 | SubtleMR | Subtle Medical, Inc. | 2019 | — |
| 0 (this device) | K241121 | Micsi-RMT | Microstructure Imaging, Inc. | 2024 | — |
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 |
|---|---|---|---|
| * | K191688 | SubtleMRSummary page 4…y Marketed Predicate Device 21 CFR 807.92(a)(3) Predicate # Predicate Trade Name Product Code K191688 SubtleMR LLZ Device Description Summary… | 2019 |
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 32 years and passes through 5 companies; a new generation was cleared every 4.8 years on median.
- None of the 5 ancestors has a recall.
- 3 other devices also cite its predicate K191688.
How does its category compare?
All LLZ devicesLLZ System, Image Processing, Radiological: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, 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?
MICSI-RMT is an image processing software that can be used for image enhancement in MRI images. It can be used to reduce image noise for head MRI.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K241121 · printed Nov 6, 2026
Cite this page
510(k) Report. “K241121: Micsi-RMT.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K241121
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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