Alternative lossless compression algorithms in X-ray cardiac images
D.R. Santos, C.M.A. Costa, A.J. Silva, J.L. Oliveira, A.J.R. Neves · 2026
Over the last decade, the use of digital medical imaging systems has increased greatly in healthcare institutions. Today, Picture Archiving and Communication System (PACS) is one of the most valuable tools supporting medical profession in both decision making and treatment procedures. It reduced the costs associated with the storage and management of image data and also increased both the intra and inter-institutional portability of data. One of the most important benefits of the digital medical image is that it allows the widespread sharing and remote access to medical data by outside institutions. PACS presents an opportunity to improve cooperative workgroups taking place either within or with other healthcare institutions. Storage and transmissions costs are continuously decreasing, but, as individual digital medical studies become significantly larger, further improvements on transmission performance and on storage efficiency are critical. Image compression algorithms offer the means to reduce storage cost and to increase transmission speed. Following previous methodologies [1] , this paper provides a comparison about the application of DICOM (Digital Imaging and Communications in Medicine) lossless compression standards on Angiography cine acquisition images. A new lossless compression approach that exploits time redundancy between successive frames is also presented. Finally, the standards codecs values are compared with results obtained with the proposed method and with video lossless codecs.