Inhance Suite includes:
Inhance Inflow IR 2.0, a non-contrast-enhanced MR angiography technique that has been developed to image arteries with ability to suppress static background tissue and venous flow. This sequence is based on 3D FIESTA, which provides excellent signal-to-noise ratio (SNR) and produces bright blood images. Selective inversion pulses are applied over the region of interest to invert arterial, venous, and static tissue. At the null point of the background tissue, an excitation pulse is applied to generate signal. The net result is an angiographic image with excellent background suppression and free of venous contamination. Uniform fat suppression is achieved by using a spectrally selective chemical saturation (SPECIAL) technique, while respiratory gating compatibility reduces respiratory motion artifacts during free-breathing renal exams.
Inhance 3D Velocity, designed to acquire angiographic images in brain and renal arteries with excellent background suppression in a short scan time. By combining a volumetric 3D phase contrast acquisition with parallel imaging, efficient k-space sampling, and pulse sequence optimization, Inhance 3D Velocity is capable of obtaining the whole neurovascular anatomy in approximately five to six minutes. Furthermore, background suppression is improved by the optimized pulse sequence design, resulting in better visualization of small distal vessels. Respiratory triggering is also compatible with Inhance 3D Velocity to enable abdominal angiography, specifically renal arteries. The results are excellent productivity and image quality.
Inhance 3D Deltaflow, a 3D, non-contrast-enhanced MRA application for peripheral arterial imaging. It is based on cardiac-gated, 3D, fast-spin echo and acquires two echoes, one in diastole and the other in systole. Slow arterial flow during diastole results in bright arteries in the diastole images, while faster arterial flow during systole results in dark arteries in the systole images. A subtraction of the systole images from diastole images provides arterial-only images with excellent suppression of venous and background signal. Interleaved acquisition and parallel imaging (ASSET) with optimized k-space trajectory helps reduce motion misregistration and improve vessel visualization respectively. In addition, the use of partial Fourier and coronal plane acquisition allows for considerably reduced scan time.
Inhance 2D Inflow, a pulse sequence designed to acquire angiographic images of arteries that follow almost a straight path (i.e. femoral, popliteal, and carotid arteries). Arterial blood flow is faster during the systolic phase and slows down during the diastolic phase. Therefore, Inhance 2D Inflow is designed to acquire data during the systolic phase. It features an optimized spatial saturation gap to improve fat suppression and background suppression. Peripheral Gating is deployed to minimize the pulsatile artifacts. Inhance 2D Inflow is compatible with ASSET acceleration to reduce scan time
"Inhance Inflow IR provides exquisite images of renal vasculature, reliably showing even more distal, small accessory vessels that are not possible to see with CE MRA. This is the MRA technique we have been waiting for."
Robert Lookstein, MD
Associate Professor Interventional Radiology and Cardiovascular Imaging
Mount Sinai Medical Center, New York, NY