# K984278: Magnetic Resonance Diagnostic Device, Airis II

- Pathway: 510(k) (Traditional)
- Applicant: Hitachi Medical Systems America, Inc.
- Decided: Dec 11, 1998 after 11 days
- Product code: MOS (Coil, Magnetic Resonance, Specialty)
- Device class: 2
- Regulation: 21 CFR 892.1000
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K974212 (1998). 1 ancestor in all.
8 later devices descend from it; 1 cites it directly.
0 of 10 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K974212: Airis II, Hitachi Medical Systems America, Inc. (1998) Summary page 2.

## Most influential descendants
- K992650: Airis, Airis II (1999), 7 descendants of its own
- K013854: Mark 5000 Quadrature Shoulder Coil (2002), 5 descendants of its own
- K033753: Pelvic Array Coil (2003), 4 descendants of its own
- K061715: Mrgfus General Purpose and Breast Coil (2006), 2 descendants of its own
- K083434: TT1 General Purpose Coil (2008), 1 descendant of its own

## Indications for use
The QD Shoulder Coil provides imaging of the shoulder articular anatomy and other large joints. The MR system is an imaging device, and is intended to provide the physician with physiological and clinical information, obtained non-invasively and without the use of ionizing radiation. The MR system produces transverse, coronal, sagittal, oblique, and curved cross-sectional images that display the internal structure of the head, body, or extremities. The images produced by the MR system reflect the spatial distribution of protons (hydrogen nuclei) exhibiting magnetic resonance. The NMR properties that determine the image appearance are proton density, spin-lattice relaxation time (T1), spin-spin relaxation time (T2), and flow. When interpreted by a trained physician, these images provide information that can be useful in diagnosis determination. Head, Body, Spine, Extremities Proton 2D T1-/T2-weighted imaging T1, T2, proton density measurements MR Angiography image processing 2D Spin Echo (SE); also with rephase 2D Gradient Field Echo (GE); also with rephase (2D GR) 2D Steady state acquisition with rewinded GE (SARGE); also with RF spoiling, rephasing 2D Inversion Recovery (IR) 2D Fast Spin Echo (FSE); also with rephase 2D Fast Inversion Recovery (FIR) 2D Dual Slice acquisition (SEDS) 3D Spin Echo (SE) 3D Gradient Field Echo (GE) 3D Steady state acquisition with rewinded GE (SARGE); also with RF spoiling, rephasing MR Angiography (2D TOF, 3D TOF, half echo, high resolution/high definition, sloped slab profile, magnetization transfer contrast) MR Fluoroscopy RF Coil Uniformity Adaptive Image post-processing ACR/NEMA/DICOM 3 compliant

Source page: https://510kreport.com/device/K984278
Methodology: https://510kreport.com/methodology