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The AURORA MRI 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, and sagittal cross-sectional images that display the internal structure of breast tissue, axilla, and chest wall local to the breast. 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. The AURORA is a dedicated breast MRI system intended for breast imaging. - . Anatomical region: Breast tissue, axilla, and chest wall local to the breast - . Nucleus excited: Proton - . Diagnostic uses: 2D, 3D T1-/T2-weighted imaging T1. T2, proton density measurements Image processing - Imaging Capabilities: 2D Spin Echo (SE) . 2D/3D Gradient Echo (GRE) Fat Suppression - . Imaging Processing: Image Subtraction Image Filtering The Aurora MR Spectroscopy Package is intended for use as a noninvasive diagnostic device that provides information based on relative concentration of the Choline metabolite in breast tissues. The localized spectra reflect the NMR properties of proton density, spin-lattice relaxation time (T1), spin-spin relaxation time (T2), and chemical shift. When interpreted by a trained medical practitioner, these spectral data provide information that can be useful in diagnosis determination.

The modified AURORA is identical to the AURORA breast imaging system cleared by the FDA through K032082 except for the addition of the Spectroscopy pulse sequence protocol and its corresponding user interface software.

The AURORA MRI system is an imaging device, and is intended to provide the physician with physiological and clinical information obtained noninvasively and without the use of ionizing radiation. The MR system produces transverse, coronal, sagittal, and oblique cross-sectional images that display the internal structure of the extremities (breast tissue, axilla, and chest wall local to the breast). 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. The AURORA is a dedicated breast MRI system intended to be used as an adjunct to conventional breast screening methods. - . Anatomical region: Breast tissue, axilla, and chest wall local to the breast - . Nucleus excited: Proton - Diagnostic uses: 2D, 3D T1-/T2-weighted imaging . T1, T2, proton density measurements Image processing - . Imaging Capabilities: 2D Spin Echo (SE) 2D/3D Gradient Echo (GRE) Fat Suppression - . Imaging Processing: Image Subtraction Image Filtering

The modified AURORA is identical to the AURORA breast imaging system cleared by the FDA through K032082 except for the addition of the RODEO Spiral 3D pulse sequence.

The AURORA MRI 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, and oblique cross-sectional images that display the internal structure of the extremities (breast tissue, axilla, and chest wall local to the breast). 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. The AURORA is a dedicated breast MRI system intended to be used as an adjunct to conventional breast screening methods.

The modified AURORA is identical to the AURORA breast imaging system cleared by FDA through K032082 except for the addition of the RODEO fat-suppression pulse sequence.

The AURORA MRI 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, and oblique cross-sectional images that display the internal structure of the extremities (breast tissue, axilla, and chest wall local to the breast). 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. The AURORA is a dedicated breast MRI system intended to be used as an adjunct to conventional breast screening methods.

The modified AURORA is identical to the AURORA breast imaging system cleared by FDA through K012154 except that the magnet is ramped to 1.5 T and the RF system and spectrometer have been changed to operate at the higher frequencies required for 1.5 T operation.

The Aurora® MR-Guided Interventional System (the System) is an optional accessory to the Aurora Imaging Technology, Inc., Magnetic Resonance Diagnostic Device. The System is intended to aid in the performance of minimally invasive diagnostic procedures of the lateral or medial side of either breast and adjacent anatomies, which may be facilitated by MR guidance. Such procedures must be performed with MR-compatible devices as selected and evaluated by the clinical user.

The use and operation of the Aurora® MR-Guided Interventional System and other MR-guided biopsy systems is based on the well-known method of target planning to determine the desired placement of an interventional device in three dimensions from an MR image. The basic targeting technique uses a three-dimensional MR-visible crosshair mounted near the needle guide in a fixed and known location. The stage is moved so that the needle guide and, consequently, the marker are moved to the general vicinity of the lesion to be targeted. The Aurora® MR-Guided Interventional System consists of four major subsystems: (1) Base plate system and components, (2) Needle guidance stage and components, (3) Position display unit (PDU), and (4) Target Planning Application (software).

The AURORA 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, and oblique cross-sectional images that display the internal structure of the extremities (breast tissue, axilla, and chest wall local to the breast). 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 (TI), spin-spin relaxation time (12), and flow. When interpreted by a trained physician, these images provide information that can be useful in diagnosis determination. The AURORA is a dedicated breast MRI system intended to be used as an adjunct to conventional breast screening methods.

The AURORA Magnetic Resonance Diagnostic Device is being enhanced by a "forklift upgrade" to increase the clinical utility of the AURORA in the stationary configuration. With the "forklift upgrade," the AURORA is available in a stand-alone configuration, and as an upgrade path to existing AURORA installations. The "forklift upgrade" enhancement is an alternate main MRI magnet, operating at a nominal field strength of 0.5T, and improved RF-chain and gradient-chain subsystems. No changes in software or pulse sequences were necessary to support full functionality of these "forkliff upgrade" enhancements.