(22 days)
The 8 Channel Cardiac Phased Array Coil is a receive-only RF Coil designed for use with 1.5T MRI systems manufactured by GE Healthcare. The indications for use include imaging of the heart, mediastinum, and pelvis regions for 2D and 3D Magnetic Resonance imaging. The nucleus excited is hydrogen.
The 8 Channel Cardiac Phased Array Coil is a surface coil used for Magnetic Resonance Imaging. It is tuned to image Proton nuclei in a receive-only configuration. It is comprised of individual Phased Array coil elements each utilizing an integrated preamplifier to improve image quality. The geometry is optimized for use with parallel imaging techniques.
The provided text is a 510(k) Premarket Notification Submission for a medical device: "8 Channel Cardiac Phased Array Coil." This type of submission focuses on demonstrating substantial equivalence to a legally marketed predicate device, rather than proving that the device meets specific acceptance criteria through a study with detailed performance metrics.
Therefore, much of the requested information (acceptance criteria table, sample sizes, expert qualifications, adjudication methods, MRMC studies, standalone performance, training set details) will not be present in this document as it pertains to a different type of regulatory submission (e.g., PMA, or specific performance testing for novel devices).
Here's a breakdown based on the available information:
1. A table of acceptance criteria and the reported device performance
This document does not provide a table of acceptance criteria or specific performance metrics as it's a 510(k) submission. A 510(k) aims to demonstrate substantial equivalence to an existing predicate device rather than meeting predefined, numerical performance criteria. The device is considered to have comparable indications for use, safety, and effectiveness to its predicate devices.
2. Sample sized used for the test set and the data provenance (e.g. country of origin of the data, retrospective or prospective)
Not applicable. The document does not describe a "test set" in the context of performance evaluation with a defined sample size for a study. This is a regulatory submission for device clearance based on equivalence.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)
Not applicable. No ground truth establishment for a test set is described.
4. Adjudication method (e.g. 2+1, 3+1, none) for the test set
Not applicable. No adjudication method for a test set is described.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance
Not applicable. This device is a hardware component (an MRI coil), not an AI-powered diagnostic tool. Therefore, MRMC studies comparing human readers with and without AI assistance are irrelevant and not described.
6. If a standalone (i.e. algorithm only without human-in-the loop performance) was done
Not applicable. This device is an MRI coil, a hardware component for imaging, not an algorithm.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)
Not applicable. Ground truth, in the context of diagnostic performance, is not discussed for this device. The evaluation is based on demonstrating equivalence in terms of safety and technical specifications for an MRI coil.
8. The sample size for the training set
Not applicable. There is no training set mentioned as this is not an algorithm being developed.
9. How the ground truth for the training set was established
Not applicable. No training set is mentioned.
Summary of the Study/Submission:
This document is a 510(k) Premarket Notification for the 8 Channel Cardiac Phased Array Coil. The "study" described is a regulatory comparison against predicate devices to demonstrate substantial equivalence.
- Device Description: The 8 Channel Cardiac Phased Array Coil is a receive-only RF coil for Magnetic Resonance Imaging (MRI), tuned to image Proton nuclei. It consists of individual phased array coil elements with integrated preamplifiers to improve image quality, and its geometry is optimized for parallel imaging techniques.
- Intended Use: For use with 1.5T MRI systems manufactured by GE Healthcare to image the heart, mediastinum, and pelvis regions for 2D and 3D MRI, exciting hydrogen nuclei.
- Predicate Devices:
- Basis for Substantial Equivalence:
- The 8 Channel Cardiac Phased Array Coil is essentially the same device as the predicate K032045, with no modifications to accommodate new anatomical regions (the initial submission for K032045 likely covered only cardiac, and this submission seeks to expand to mediastinum and pelvis).
- Comparison with the 1.5T 12 Channel Body Array Coil (K052584) establishes that the 8 Channel Cardiac Phased Array Coil (an existing device) will now have similar indications for use, particularly for the mediastinum and pelvis, as are covered by the body array coil.
- Conclusion: GE Healthcare considers the 8 Channel Cardiac Phased Array Coil to be as safe, as effective, and its performance substantially equivalent to the predicate devices. The FDA confirmed this finding of substantial equivalence.
In essence, the "study" is a regulatory review illustrating that a specific MRI coil is technologically and functionally equivalent to previously cleared devices for imaging the specified anatomical regions, thus not requiring new, extensive clinical performance studies.
§ 892.1000 Magnetic resonance diagnostic device.
(a)
Identification. A magnetic resonance diagnostic device is intended for general diagnostic use to present images which reflect the spatial distribution and/or magnetic resonance spectra which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).(b)
Classification. Class II (special controls). A magnetic resonance imaging disposable kit intended for use with a magnetic resonance diagnostic device only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.