Phantom system, use of the system, and imaging configuration having a phantom system
A phantom system has a housing ( 2 ) with a lower part ( 3 ) having an opening in the z-direction and a cover part ( 4 ) for closing the opening of the housing ( 2 ). A first plate-shaped insert element ( 10 a ) has at least one depression ( 11 a ) for receiving a liquid substance. The lower part ( 3 ) and the cover part ( 4 ) delimit a cavity ( 5 ) with an insert area ( 8 ), which is constituted to receive the first insert element ( 10 a ). A first sealing element ( 14 a ) seals the first insert element ( 10 a ) against the cavity ( 5 ) and a fixing facility fixes the first insert element ( 10 a ) in the cavity ( 4 ) of the housing ( 2 ) in an operating state of the MPI phantom. The phantom permits good contrast in MPI, MRI, or μCT using liquid contrast media.
1. A phantom system for calibration and/or characterization of an imaging configuration, the phantom system comprising:
a housing, said housing comprising a lower part having an opening in a z-direction and a cover part for closing said opening of said housing, wherein said lower part and said cover part delimit a cavity having an insert area;
a first plate-shaped insert element having at least one depression for receiving a liquid substance, said first plate-shaped insert element structured for placement within said cavity;
a sealing facility having a first sealing element for liquid-tight sealing of said first plate-shaped insert element with respect to said cavity; and
a fixing facility for fixing said first plate-shaped insert element in said cavity, wherein said first plate-shaped insert element is fixed and sealed in said cavity of said housing in an operating state of the phantom, wherein said fixing facility comprises a closing plate and detachable fastening means.
2. The phantom system of claim 1 , wherein said first insert element or said at least one depression of said first insert element is disposed centrally with respect to a central plane of said housing.
3. The phantom system of claim 2 , further comprising a compensation element, which is constituted in such a way as to position said first insert element in the z-direction inside said housing.
4. The phantom system of claim 1 , further comprising a second plate-shaped insert element having at least one depression for receiving a liquid or powder substance, wherein, in said operating state, said second plate-shaped insert element is fixed and sealed in said cavity of the housing, said sealing facility further comprising a second sealing element for liquid-tight sealing of said second insert element against said cavity.
5. The phantom system of claim 4 , wherein, in said operating state, said first and said second insert elements or depressions in said first and said second insert elements are disposed symmetrically with respect to a central plane of said housing.
6. The phantom system of claim 1 , wherein the phantom system comprises a positioning device for reproducible positioning of said first insert element relative to said housing.
7. The phantom system of claim 1 , wherein edges of said housing are chamfered.
8. The phantom system of claim 1 , wherein said first insert element is at least partially made of Polytetrafluoroethylene.
9. The phantom system of claim 1 , wherein the phantom system is suitable for characterization and/or calibration of an MPI configuration and at least one of an MRI configuration, a PET configuration and a μCT configuration.
10. The phantom system of claim 9 , wherein said cavity has a reservoir area and said sealing facility has a further sealing element, wherein, in said operating state, said further sealing element seals said reservoir area against said insert area.
11. The phantom system of claim 1 , further comprising an external seal, wherein, in said operating state, said external seal is disposed between said cover part and said lower part of said housing.
12. A method for imaging, the method comprising the step of calibrating and/or characterizing an MPI configuration and at least one of an MRI configuration, a PET configuration and a μCT configuration using the phantom system of claim 1 .
13. A configuration or an MPI configuration for an imaging method, the configuration comprising the phantom system of claim 1 , wherein said housing and said first insert element are disposed, structured and dimensioned such that at least one depression is positioned in a FOV in each orientation of the phantom system in a measuring position within an imaging configuration.