title: Dynamic CT perfusion image data compression for efficient parallel processing.
abstract: The increasing size of medical imaging data, in particular time series such as CT perfusion (CTP), requires new and fast approaches to deliver timely results for acute care. Cloud architectures based on graphics processing units (GPUs) can provide the processing capacity required for delivering fast results. However, the size of CTP datasets makes transfers to cloud infrastructures time-consuming and therefore not suitable in acute situations. To reduce this transfer time, this work proposes a fast and lossless compression algorithm for CTP data. The algorithm exploits redundancies in the temporal dimension and keeps random read-only access to the image elements directly from the compressed data on the GPU. To the best of our knowledge, this is the first work to present a GPU-ready method for medical image compression with random access to the image elements from the compressed data.
authors.affiliation: Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Location L0, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands. r.salesbarros@amc.uva.nl.|Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. r.salesbarros@amc.uva.nl.
authors.forename: Renan Sales
authors.initials: RS
authors.lastname: Barros
authors.affiliation: Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Silvia Delgado
authors.initials: SD
authors.lastname: Olabarriaga
authors.affiliation: Department of Radiology, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Jordi
authors.initials: J
authors.lastname: Borst
authors.affiliation: Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
authors.forename: Marianne A A
authors.initials: MA
authors.lastname: van Walderveen
authors.affiliation: Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Location L0, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Jorrit S
authors.initials: JS
authors.lastname: Posthuma
authors.affiliation: Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Location L0, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands.|Department of Radiology, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Geert J
authors.initials: GJ
authors.lastname: Streekstra
authors.affiliation: Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Location L0, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands.|Department of Radiation Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
authors.forename: Marcel
authors.initials: M
authors.lastname: van Herk
authors.affiliation: Department of Radiology, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Charles B L M
authors.initials: CB
authors.lastname: Majoie
authors.affiliation: Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Location L0, Meibergdreef 15, 1105 AZ, Amsterdam, The Netherlands.|Department of Radiology, Academic Medical Center, University of Amsterdam, Location B0, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
authors.forename: Henk A
authors.initials: HA
authors.lastname: Marquering
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D044962:Data Compression / Q000379:methods*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D010477:Perfusion; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: Acute care; CT perfusion; GPU; Lossless compression; Parallel processing