510(k) Report

510(k) · Cleared

Recalled · 2004

MRT-50GP

K933018510(k) TraditionalCleared Feb 18, 1994241-day reviewClass II21 CFR 892.1000Recalls 2

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Toshiba America Mri, Inc. · LNH System, Nuclear Magnetic Resonance Imaging

Cleared on Feb 18, 1994 after a 241-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 9 later devices descend from it. It has been recalled 2 times.

Decided
Feb 18, 1994
Review
241 days
Class
Class II
Product code
LNH
Recalls
2
Predicates
0

9 later devices descend from it, 5 citing it directly.

Descendants, by year cleared 1996: 3 descendants cleared1997: 2 descendants cleared2000: 1 descendant cleared1999: 1 descendant cleared2002: 1 descendant cleared2008: 1 descendant cleared1990200020102020
  1. This deviceK933018 MRT-50GPToshiba America Mri, Inc. · 1994
  2. Descendant · cites it directly · 5 of its ownK962138 Flexart V3.1 SoftwareToshiba America Mri, Inc. · 1996
  3. Descendant · 2 generations on · 4 of its ownK970573 Flexart V3.5 SoftwareToshiba America Mri, Inc. · 1997
  4. Descendant · 2 generations on · 2 of its ownK983110 Flexart,Flexart/Hyper, Visart, Visart/HyperToshiba America Mri, Inc. · 1999
  5. Descendant · cites it directly · 1 of its ownK993574 Opart/Prodiga, Opart/Protenza, Opart/ParagonToshiba America Mri, Inc. · 2000
  6. Descendant · 3 generations on · 0 of its ownK080119 ClearscanEsi, Inc. · 2008

Showing 5 of 9 descendants. See all descendants

Descendants cleared per year

1996: 31997: 21999: 12000: 12002: 12008: 1
1996high 3 (1996) · low 0 (1998)2026

Most influential descendants

Showing 5 of 9 · See all
  • K962138Flexart V3.1 SoftwareToshiba America Mri, Inc. · 1996 · cites it directly5descendants
  • K970573Flexart V3.5 SoftwareToshiba America Mri, Inc. · 1997 · 2 generations on4descendants
  • K983110Flexart,Flexart/Hyper, Visart, Visart/HyperToshiba America Mri, Inc. · 1999 · 2 generations on2descendants
  • K993574Opart/Prodiga, Opart/Protenza, Opart/ParagonToshiba America Mri, Inc. · 2000 · cites it directly1descendant
  • K080119ClearscanEsi, Inc. · 2008 · 3 generations on0descendants
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
0 (this device)K933018MRT-50GPToshiba America Mri, Inc.1994—
+1K962138Flexart V3.1 SoftwareToshiba America Mri, Inc.1996—
+2K970573Flexart V3.5 SoftwareToshiba America Mri, Inc.1997—
+2K983110Flexart,Flexart/Hyper, Visart, Visart/HyperToshiba America Mri, Inc.1999—
+1K993574Opart/Prodiga, Opart/Protenza, Opart/ParagonToshiba America Mri, Inc.2000—
+3K080119ClearscanEsi, Inc.2008—

Descendants by year cleared

Year clearedDevicesWith a Class I recall
199630
199720
199910
200010
200210
200810
FIG. 1 — Lineage of K933018, 1994–2008Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in LNH? 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 LNH device

  1. #1 K213693 MAGNETOM Vida with syngo MR XA50Ascore 23.0 · 18 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
Get a 510(k) Report

What was it cleared against?

FDA has not posted a summary or statement for it, so its predicates are not known.

What descends from it? (9)

5 later devices cite it directly; ranked here by how many devices descend from each in turn.

NumberDeviceApplicantDecidedDescendants
K962138Flexart V3.1 SoftwareToshiba America Mri, Inc.19965
K993574Opart/Prodiga, Opart/Protenza, Opart/ParagonToshiba America Mri, Inc.20001
K964608MRT-35A V9.0Toshiba America Mri, Inc.19970
K961624Flexart TMJ CoilToshiba America Mri, Inc.19960
K961391Flexart QD Head/Neck CoilToshiba America Mri, Inc.19960

Has anything in its family been recalled? (0 Class I)

Recalls of this device

DateClassRecallRoot causeReason
May 6, 2004Not classifiedZ-0937-04OtherSoftware anomaly.
Jan 27, 2004Not classifiedZ-0546-04OtherSoftware anomally causes image slices to be in incorrect order.

No ancestor or descendant has a Class I recall.

What does this lineage say?

  • Of its descendants, K962138 (Toshiba America Mri, Inc., 1996) has gone furthest, with 5 descendants of its own.

How does its category compare?

All LNH devices

LNH System, Nuclear Magnetic Resonance Imaging: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · LNH

26in 2025

2007: 122008: 192009: 172010: 122011: 162012: 222013: 192014: 172015: 192016: 202017: 182018: 292019: 262020: 322021: 272022: 302023: 302024: 262025: 262026 (partial year): 24
2007high 32 (2020) · low 12 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · LNH

122in 2025

2007: 35 days median2008: 53 days median2009: 70 days median2010: 94 days median2011: 81 days median2012: 89 days median2013: 108 days median2014: 108 days median2015: 140 days median2016: 108 days median2017: 98 days median2018: 128 days median2019: 62 days median2020: 121 days median2021: 87 days median2022: 74 days median2023: 124 days median2024: 104 days median2025: 122 days median2026 (partial year): 126 days median
2007high 140 (2015) · low 35 (2007)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · LNH

8in 2025

2007: 252008: 122009: 72010: 172011: 112012: 52013: 22014: 132015: 12, 2 Class I2016: 12018: 712019: 52020: 42021: 412022: 132023: 10, 1 Class I2024: 42025: 8, 5 Class I2026 (partial year): 43
2007high 71 (2018) · low 0 (2017)2026

Class I (8 since 2007) Class II/III not classified

Adverse event reports per year · LNH

1,263in 2025

2007: 1142008: 1672009: 1942010: 1652011: 1822012: 1702013: 1072014: 1192015: 1132016: 1352017: 1212018: 1582019: 1582020: 982021: 842022: 1382023: 1592024: 2812025: 1,263
2007high 1,263 (2025) · low 84 (2021)2025

MAUDE reports naming product code LNH, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
2007123525114
2008195312167
200917707194
2010129417165
2011168111182
201222895170
2013191082107
20141710813119
20151914012 (2)113
2016201081135
201718980121
20182912871158
201926625158
202032121498
202127874184
2022307413138
20233012410 (1)159
2024261044281
2025261228 (5)1,263
20262412643—

More from Toshiba America Mri, Inc.

68 FDA decisions under this applicant name. See the company

  • K002531Excelart with Pianissimo, Model MRT-1501/P3Toshiba America Mri, Inc. · 20004 recalls
  • K002522Opart, Model MRT-600Toshiba America Mri, Inc. · 2000
  • K000549Opart, Model MRT-600Toshiba America Mri, Inc. · 2000
  • K993803Excelart with PianissimoToshiba America Mri, Inc. · 20003 recalls
  • K993574Opart/Prodiga, Opart/Protenza, Opart/ParagonToshiba America Mri, Inc. · 2000

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The LNH category page

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https://510kreport.com/device/K933018 · printed Nov 5, 2026

Cite this page

510(k) Report. “K933018: MRT-50GP.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K933018

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Record history
  • FDA decision record loaded May 2, 2026
  • Lineage and recalls computed Nov 3, 2026
  • Page last updated Nov 3, 2026