In nuclear magnetic resonance (NMR) imaging, the echo planar method is used for fast scanning. Using conventional reconstruction methods, it requires twice as much data as Cartesian coordinate scanning due to sparse sampling on the edges of the Fourier plane. A noniterative reconstruction method is derived that requires only as much data as the Cartesian case. It operates by exactly interpolating bandlimited echo planar data into Cartesian coordinate data. In order to determine the loss in signal-to-noise ratio (SNR) due to faster operation, simulations are made comparing the new algorithm to a control algorithm that uses the conventional amount of data. It is found that with the new method scanning can be done twice as fast with 46% of the conventional SNR. >
[1]
G. Johnson,et al.
The limitations of NMR recalled-echo imaging techniques
,
1985
.
[2]
P. R. Moran,et al.
A unified description of NMR imaging, data-collection strategies, and reconstruction.
,
1984,
Medical physics.
[3]
Peter Mansfield,et al.
BIOLOGICAL AND MEDICAL IMAGING BY NMR
,
1978
.
[4]
P. R. Locher,et al.
On NMR spin imaging by magnetic field modulation
,
1980
.
[5]
M. M Tropper,et al.
Image reconstruction for the NMR echo-planar technique, and for a proposed adaptation to allow continuous data acquisition
,
1981
.