Patent US4434963A successfully refreshed from Google Patents.
EP0133722A2
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Phantom for NMR apparatus
Assignee: Koninklijke Philips NV
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Filing: 1984-07-30
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Granted: —
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Expires: 2004-07-30
Abstract
Abstract A phantom for NMR apparatus comprises a structure of holes which are to be filled with a contrast medium so that when the phantom is imaged in NMR apparatus, imaging qualities such as resolution, sensitivity, linearity etc. can be read directly or measurements can be performed for this purpose.
Inventors
- 👤 Albertus Cornelis Meyer
- 👤 Hans Hermanus Tuithof
- 👤 Jacobus Mulder
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:54
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/48; G01R33/58
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
A phantom for NMR imaging apparatus, comprising a plastics body which is provided with holes which are to be filled with a constrast medium for NMR measurements, characterized in that the shape, the size and the mutual orientation of the holes 3 exhibit a structure which is adapted to those imaging properties of the apparatus which are to be measured.
Claim 2
Dependent Claim
60 words
A phantom for NMR imaging apparatus, comprising a plastics body which is provided with holes which are to be filled with a constrast medium for NMR measurements, characterized in that the shape, the size and the mutual orientation of the holes 3 exhibit a structure which is adapted to those imaging properties of the apparatus which are to be measured.
Claim 3
Dependent Claim
72 words
A phantom as claimed in Claim 1, characterized in that it is composed of a cylindrical block 1 which is divided into a plurality of segments A-F, and each of the segments is provided with a pattern of holes, at least one pattern sequence of holes being distributed along a straight line 7 in each of the segments, and the transverse dimension and spacing of the holes being different for each segment.
Claim 4
Dependent Claim
29 words
A phantom as claimed in Claim 1, characterized in that it comproses an orthogonal system 11 of grooves (13, 15) which are to be filled with a contrast medium.
Claim 5
Dependent Claim
21 words
A phantom as claimed in Claim 2, characterized in that the thickness of the segments varies according to an arithmetical progression.
Claim 6
Dependent Claim
21 words
A phantom as claimed in Claim 1, characterized in that it comprises two semi-circular segments with a predetermined difference in thickness.
Claim 7
Dependent Claim
23 words
A phantom as claimed in Claim 1 or 3, characterized in that it comprises a series of identified sections 31 of equal thickness.
Claim 8
Dependent Claim
66 words
A phantom as claimed in Claim 1, characterized in that it comprises holes which are situated along, for example from 6 to 18 radial lines, the transverse dimensions of said holes increasing as from the centre, the depth of the holes increasing in steps of, for example from 0.1 to 0.5 mm according to an arithmetical progression from one radial line to the next radial line.
Claim 9
Dependent Claim
25 words
A phantom as claimed in Claim 1, characterized in that it comprises tubes each filled with an adapted liquid and in a liquid filled vessel.
References Cited (Backward Citations)
No citation records indexed.
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