Housing for shielding a sensor from a radiofrequency field and an imaiging system including the same

An MR-PET imaging system, comprising:

• a magnet assembly, configured to generate a static magnetic field, wherein the magnet assembly forms a first hollow cylinder providing a first inner space;
• an RF coil assembly, configured to generate a radio frequency (RF) field for MR imaging;
• a supporting component inside the first inner space;
• and
• a plurality of PET detection modules supported on the supporting component, each of the plurality of PET detection modules including:
• at least one PET detection unit;
• and
• a housing configured to shield the at least one PET detection unit from the RF field, wherein the housing includes a plurality of walls forming at least a part of a cavity for accommodating the at least one PET detection unit, and at least one of the plurality of wall includes:
• a substrate;
• and
• a multi-layered structure disposed on the substrate, the multi-layered structure including a plurality of metallic layers, wherein:
• at least one pair of adjacent layers of the plurality of metallic layers include slits, and
• the slits of the at least one pair of adjacent layers are staggered.

A method for manufacturing a housing, the housing comprising a plurality of slit walls forming at least a part of a cavity for accommodating a sensor, wherein the method comprising:

• for each of the plurality of slit walls:
• providing a substrate of the slit wall;
• and
• forming a multi-layered structure on the substrate, the multi-layered structure including a plurality of metallic layers, wherein the forming a multi-layered structure includes:
• disposing a first metallic layer on the substrate;
• forming a first plurality of slits on the first metallic layer;
• disposing a first electric insulation layer on the first metallic layer;
• disposing a second metallic layer on the first electric insulation layer;
• and
• forming a second plurality of slits on the second metallic layer, wherein the second plurality of slits and the first plurality of slits are staggered.