Lossless data compression for short duration 3D frames in positron emission tomography

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI:10.1109/NSSMIC.1993.373609

K. Baker, W.E. Jones, L. Byars, M. Casey, J. Reed

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引用次数: 4

Abstract

H/sub 2/O/sup 15/ 3D bolus studies and other dynamic 3D protocols in positron emission tomography (PET) require frame durations of five seconds or less as the protocol begins, with required frame durations increasing as the study progresses. A goal in PET acquisition is sustained 3D frame duration of ten seconds, with shorter frame durations allowed for a limited time. Transfer of projection arrays to an acquisition hard disk is a major limit of frame duration. Data compression can be used to increase the effective disk throughput and therefore decrease the sustained frame duration. The authors discuss the use of lossless compression hardware in a modern PET 3D acquisition system. The hardware uses an implementation of Lempel-Ziv compression with an estimated sustained throughput of 20 megabytes per second and compression ratios of 3 to 10 for short duration 3D projections arrays. Compression use can decrease the minimum sustainable frame duration to less than 10 seconds for an ECAT EXACT HR.<>

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正电子发射断层成像中短时间三维帧的无损数据压缩

H/sub 2/O/sup 15/ 3D批量研究和其他正电子发射断层扫描(PET)的动态3D方案在方案开始时要求帧持续时间为5秒或更短，随着研究的进行，所需帧持续时间增加。PET采集的目标是持续10秒的3D帧持续时间，在有限的时间内允许更短的帧持续时间。将投影阵列传输到采集硬盘是帧持续时间的主要限制。数据压缩可用于增加有效磁盘吞吐量，从而减少持续帧持续时间。讨论了无损压缩硬件在现代PET三维采集系统中的应用。硬件使用Lempel-Ziv压缩实现，估计持续吞吐量为每秒20兆字节，压缩比为3比10，用于短时间3D投影阵列。压缩使用可以减少最小可持续帧持续时间少于10秒的ECAT EXACT HR. b>

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1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference

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