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FAST MRI
Given sufficient signal-to-noise (SNR), the length of time required for producing an MR image is limited by the time it takes to encode the spatial information. Recently, a new field of MR has arisen–parallel MRI (SENSE and SMASH). An N-channel parallel receiver system and a phased array RF coil are used to collect MRI k-space data that is purposely undersampled, thus creating N-wrapped images to achieve a faster data acquisition. If the elements of the phased array coil are sufficiently distinct in their spatial signal sensitivities, then this sensitivity information can be used to produce an unwrapped, fully encoded image in a fraction of the normal MR imaging time.
The MR Technology groups are researching new methods for spatial encoding using knowledge of the transmit, receive, and even noise properties of RF coil arrays, as well as other RF methods, such as using combinations of sculpted RF pulses and gradients (Hadamard or wavelet encoding). In addition, optimized k-t space data acquisition is being developed to maximize temporal efficiency for even faster MR imaging.
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Read more about FAST MRI:
- Gradient Coils
- Gradient Free MRI
- MR Research
- MR Technology Development
- MRI Console Development
- MRI Imaging Methods
- MRI Systems
- Multi Transmitter Arrays
- RF Coils
