Method for the acquisition and evaluation of data in a nuclear m

Details Method for the acquisition and evaluation of data in a nuclear m Method for the acquisition and evaluation of data in a nuclear m

1996-10-24

1998-05-19

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01N 2408

Patent

active

057540462

ABSTRACT:
In a method for the acquisition and evaluation of data obtained in a nuclear magnetic resonance tomography apparatus, only data for a constant sub-region of an overall dataset, that was obtained from a preceding measurement, are updated by new measured data in subsequent successive measurements (keyhole method). In order to sharply reproduce measurement subjects in the visual display which move from measurement to measurement while only slightly lengthening the registration time in comparison to a standard keyhole measurement sequence, data for difficult sub-regions of the overall dataset are additionally updated from measurement to measurement, and these sub-regions are varied in a predetermined sequence from measurement to measurement.

REFERENCES:
patent: 4830012 (1989-05-01), Riederer
patent: 5109854 (1992-05-01), Provost
patent: 5168226 (1992-12-01), Hinks
patent: 5276397 (1994-01-01), Kawasaki
patent: 5304928 (1994-04-01), Takeda
"Composite k-Space Windows (Keyhole Techniques) To Improve Temporal Resolution in a Dynamic Series of Images Following Contrast Administration," Brummer et al., Book of Abstracts, Society of Magnetic Resonance in Medicine, 1992.
"Patent Abstracts of Japan," Japanese Published Application 4-246327 Sep. 1992.
"Keyhole Imaging Offers Shortcut To Fast MR Scans," Diagnostic Imaging, Feb. 1983, p. 36.

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