Nuclear medicine camera gantry system with vertically stored collimators
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United States of America Patent
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-
Mar 17, 1992
Grant Date -
N/A
app pub date -
Nov 21, 1990
filing date -
Nov 21, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An outer gantry (20) is movably mounted on wheels to move along tracks (22). An inner gantry (30) rotatably mounted on the outer gantry includes at least a pair of guide rods (56, 58) on which detector heads (32, 34) are slidably mounted. Motors (92, 102) selectively translate the detector heads along the guide rods. A chain and sprocket arrangement (116, 114; 128, 126) constrains the heads against canting and maintains opposite sides of the detector heads in alignment as the detector heads move and as the inner gantry rotates. Each detector head includes a roller bearing track or channel portion (140) on which a horizontal track portion (142) of a collimator (144) is hung vertically. A collimator connecting assembly (150) connects a bottom portion of the collimator to the detector head and secures it against further horizontal movement. A collimator cart (200) includes an analogous roller track portion (202) for supporting the collimators by the collimator guide track portion as collimators are moved between the detector head and like track portion ( 192) of a detector storage rack (190).
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