Magnetic Resonance Fingerprinting Exams With Optimized Sound

摘要

Apparatus, methods, and other embodiments associated with optimizing sounds produced during nuclear magnetic resonance (NMR) fingerprinting are described. One example NMR apparatus includes an NMR logic to repetitively and variably sample a (k, t, E) space associated with a patient to acquire a set of NMR signals. Members of the set of NMR signals are associated with different points in the (k, t, E) space. Sampling is performed with t and/or E varying in a non-constant way. The varying parameters may include flip angle, echo time, RF amplitude, and other parameters. The parameters are varied in different acquisition blocks to facilitate matching sounds produced in response to the acquisition blocks to a desired set of sounds. The desired set of sounds may be a musical piece.

主权项

1. A method for controlling a magnetic resonance (MR) apparatus performing a magnetic resonance fingerprinting (MRF) procedure on a patient, the method comprising:
configuring an MRF acquisition block as a function of a desired acoustic waveform; and producing a desired sound in the MR apparatus by causing the MR apparatus to apply one or more gradients and one or more radio frequency (RF) pulses according to the MRF acquisition block as part of the MRF procedure, where the desired sound is audible to the patient, where the MRF acquisition block includes one or more excitation phases, one or more readout phases, and one or more waiting phases, where the MRF acquisition block is one of a series of variable MRF acquisition blocks that are part of the MRF procedure, and where at least one member of the series of variable MRF acquisition blocks differs from at least one other member of the series of variable MRF acquisition blocks in one or more sequence block parameters.