510(k) · Cleared

Cleared

Field Effects Mri System

K983902510(k) TraditionalCleared Jan 7, 199965-day reviewClass II21 CFR 892.1000

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

Intermagnetics General Corp. · LNH System, Nuclear Magnetic Resonance Imaging

Cleared on Jan 7, 1999 as substantially equivalent to K963953 (Imig-Mri Systems, LLC, 1996) and 1 other predicate after a 65-day review. Its family tree reaches back 1 generation to 1994.

Decided: Jan 7, 1999
Review: 65 days
Class: Class II
Product code: LNH
Recalls: None
Predicates: 2

Its longest line of descent runs back 1 generation to K943799 (1994). 2 ancestors in all. No later device cites it as a predicate yet.

By dateBy generation

Root · 1 generation backK943799 Version 5 Operating System SoftwareHitachi Medical Systems America, Inc. · 1994
This deviceK983902 Field Effects Mri SystemIntermagnetics General Corp. · 1999

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
−1	K943799	Version 5 Operating System Software	Hitachi Medical Systems America, Inc.	1994	—
0 (this device)	K983902	Field Effects Mri System	Intermagnetics General Corp.	1999	—

Other ancestors by year cleared

Year cleared	Devices	With a Class I recall
1996	1	0

FIG. 1 — Lineage of K983902, 1994–1999Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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 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 K213693 MAGNETOM Vida with syngo MR XA50Ascore 23.0 · 18 generations · no Class I recall
#2 Held for the reportin the report
#3 Held for the reportin the report

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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	Applicant	Decided	Recalls
*	K963953	Imig-Mri Summary page 2 …vice Product Nomenclature: System, Nuclear Magnetic Resonance Imaging Product Code(s): QOLNH Trade/Proprietary Name: Field Effects MRI Predicate Device(s): IMIG-MRI. K963953 Hitachi MRP-5000 with Version 5.0 Operatfing System Software, K943799 DEVICE DESCRIPTION: FUNCTION Identical to the IMIG-MRI 51…	Imig-Mri Systems, LLC	1996	—
*	K943799	Version 5 Operating System Software Summary page 2 …g Product Code(s): QOLNH Trade/Proprietary Name: Field Effects MRI Predicate Device(s): IMIG-MRI. K963953 Hitachi MRP-5000 with Version 5.0 Operatfing System Software, K943799 DEVICE DESCRIPTION: FUNCTION Identical to the IMIG-MRI 510(k) K963953. The original IMIG-MRI system was renamed as TREX MRl in…	Hitachi Medical Systems America, Inc.	1994	—

Also cleared against K963953: 1 other device →

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?

None of the 2 ancestors has a recall.
1 other device also cites its predicate K963953.

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

2007high 32 (2020) · low 12 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · LNH

122in 2025

2007high 140 (2015) · low 35 (2007)2026

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

Recalls per year · LNH

8in 2025

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

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

Year	Decisions	Median 510(k) review, days	Recalls (Class I)	MAUDE reports
2007	12	35	25	114
2008	19	53	12	167
2009	17	70	7	194
2010	12	94	17	165
2011	16	81	11	182
2012	22	89	5	170
2013	19	108	2	107
2014	17	108	13	119
2015	19	140	12 (2)	113
2016	20	108	1	135
2017	18	98	0	121
2018	29	128	71	158
2019	26	62	5	158
2020	32	121	4	98
2021	27	87	41	84
2022	30	74	13	138
2023	30	124	10 (1)	159
2024	26	104	4	281
2025	26	122	8 (5)	1,263
2026	24	126	43	—

What is it indicated for?

The Field Effects MRI system produces cross-sectional images: Anatomical Region: General body anatomy, including head, spine, forso, and extremities Nucleus excited: 1H nuclei (Proton) Diagnostic uses: Images correspond to the distribution of 1H nuclei exhibiting nuclear magnetic resonance, with image intensity dependent upon NMR parameters, including - spin-lattice relaxation time (T1) - spin-spin relaxation time (12) - density of nuclei (p) - flow…

Read the full statement (142 words)

The Field Effects MRI system produces cross-sectional images:

Anatomical Region: General body anatomy, including head, spine, forso, and extremities

Nucleus excited: 1H nuclei (Proton)

Diagnostic uses: Images correspond to the distribution of 1H nuclei exhibiting nuclear magnetic resonance, with image intensity dependent upon NMR parameters, including

- spin-lattice relaxation time (T1)

- spin-spin relaxation time (12)

- density of nuclei (p)

- flow velocity

- chemical shift (3)

Clinical use: Images may be interpreted by a trained physician to yield information that can be useful in the determination of a diagnosis.

RF Coils:

Head - quadrature

Cervical Spine - quadrature

Lumbar Spine, Thoracic Spine, and Abdomen - quadrature

Knee - linear

Image Acquisition

Spin Echo

Gradient Echo (GE,RGE)

Fast Spin Echo (FSE)

Fast Dual Echo (FDE)

3D Fast Gradient Echo (3DGE, 3DRGE)

Inversion Recovery with Fast Spin Echo (FSE STIR, FSE FLAIR)

Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.

https://510kreport.com/device/K983902 · printed Nov 5, 2026

Cite this page

510(k) Report. “K983902: Field Effects Mri System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K983902

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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