Slice thickness and contiguity phantom for a magnetic resonance imaging scanner
US4692704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Feb 6, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phantom for evaluating the operating performance of a magnetic resonance imaging scanner system includes a generally tubular body enclosed at its ends and containing a cylindrical stack of a plurality of leaves. Each leaf has one or more wedge-shaped slices or sectors cut out for identification and reference purposes. Leaves having one, two and four slices formed therein are arranged in a predetermined order in the stack with the slices in a predetermined helical pattern approximately eighteen degrees apart. The container is filled with a liquid and is inserted in the magnetic resonance imaging system to obtain images which can be evaluated to determine if the system is in calibration. A typical evaluation determines MRI slice thickness, slice location, and contiguity of the slices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.