The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1984
Filed:
May. 19, 1981
Applicant:
Inventor:
Godfrey N Hounsfield, Newark, GB;
Assignee:
Picker International Limited, Wembley, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324309 ; 324307 ;
Abstract
In Nuclear Magnetic Resonance (NMR) imaging systems it is known to excite resonance in a slice of a body and to sample the resonance signals in the presence of a field gradient across the slice. The gradient field is pulsed. Where such systems analyse the signal to be for many sets of strips in the slice, each set in a different direction, for analysis by techniques used in computerized tomography (CT) X-ray systems, it is now proposed that the field gradient pulsed should reach a maximum after not more than one third of its total duration to balance the spatial frequency emphasis (FIG. 1e) in the CT processing.