| 摘要 |
A gamma radiation imaging apparatus, in particular a gamma radiation breast imaging apparatus, comprising an object positioning device (10), defining an imaging space for the object to be imaged (v), and a gamma camera positioned to image a volume in said imaging space, wherein the object positioning device comprises a frame having at least two plates (12), with the imaging space there between, wherein at least one of the plates is movably mounted to said frame in a direction substantially towards another plate of the at least two plates, and wherein the plates are arranged to contact the object (30) when positioned between said plates, and wherein the gamma camera comprises a collimator (21) with at least one pinhole, and a gamma sensitive detector arranged to receive images from the collimator, wherein the collimator is positioned in a plane substantially parallel to one of the plates and is movable in said plane, and wherein the apparatus further comprises a collimator mover means (26) arranged to controllably move the collimator in said plane. |
