Compression and storage of projection data in a rotatable part of a computed tomography system
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United States of America Patent
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Apr 3, 2012
Grant Date -
May 27, 2010
app pub date -
Jan 12, 2009
filing date -
Nov 26, 2008
priority date (Note) -
Expired
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Abstract
A method and apparatus compress projection data and store the compressed projection data in a rotatable part that is mounted for rotation within a stationary part. The data acquisition source, compressor and storage device are connected to the rotatable part. The compressor compresses projection data samples provided by the data acquisition source to form compressed packets. The compressed packets are stored in the storage device, for example one or more solid state drives mounted on the rotatable part. A data access array contains information related to the location of the stored compressed packets. Compressed packets are retrieved and transferred across the interface to the stationary part. A decompressor at the stationary part decompresses the received compressed packets to form decompressed samples of the corresponding projection data. This abstract does not limit the scope of the invention as described in the claims.
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