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Congress: ECR25
Poster Number: C-18800
Type: Poster: EPOS Radiologist (educational)
Authorblock: T. Kimpe, E. De Brauwer, L. De Paepe, O. De Wel, A. Xthona; Kortrijk/BE
Disclosures:
Tom Kimpe: Employee: Barco NV
Elie De Brauwer: Employee: Barco NV
Lode De Paepe: Employee: Barco NV
Ofelie De Wel: Employee: Barco NV
Albert Xthona: Employee: Barco NV
Keywords: Breast, Computer applications, eHealth, Image manipulation / Reconstruction, PACS, Teleradiology, Computer Applications-Teleradiology, Image compression, Teleradiology, Image verification
Learning objectives Radiology viewing solutions increasingly are making use of streaming technology, where images are rendered on a server and then sent over a network to a client to visualize these images. In such a configuration, applications such as the EMR or PACS viewer are (mostly) running on the server side, while on the client side the primary functionality is to decode the image stream, visualize images on the client display, and to feedback user interaction such as mouse and keyboard to...
Read more Background A setup was created for controlled testing of image quality in a streaming context. A key functionality of the setup was the possibility to enforce network settings between server and client. This made it possible to test streaming solutions with controlled network bandwidth, packet loss, latency and jitter.Technical and clinical test patterns were used to evaluate perceived quality. [fig 1] These test patterns included greyscale and color test images including some AAPM TG18 test patterns, as well as relevant clinical images.Quality of...
Read more Findings and procedure details There is significant fluctuation of the image quality during a reading session, even if network characteristics are kept stable. This is because streaming visualization typically uses image compression, and some images can be compressed better without visual artifacts than other images.Also the achieved framerate is fluctuating significantly during a reading session. User actions such as pan-zoom, scrolling and window-level operations have strong influence on achieved framerate. [fig 2] Type of image (modality, test pattern) also has a strong effect. Technical test patterns are...
Read more Conclusion Radiology viewing solutions increasingly are making use of VDI and streaming technology. This has important advantages such as increased security, smaller size and lower cost client devices, and reduced IT and maintenance costs.However, image quality of streaming solutions strongly depends on network characteristics. Network bandwidth, latency and packet loss are typically fluctuating over time and can result into unpredictable image quality. And even in case of perfectly stable network performance, image quality will depend on the image contents (modality) that...
Read more References Samei, Ehsan & Badano, Aldo & Chakraborty, Dev & Compton, Ken & Cornelius, Craig & Corrigan, Kevin & Flynn, Michael & Hemminger, Bradley & Hangiandreou, Nick & Johnson, Jeffrey & Stevens, Donna & Pavlicek, William & Roehrig, Hans & Rutz, Lois & Shepard, Jeffrey & Uzenoff, Robert & Wang, Jihong & Willis, Charles. (2005). Assessment of display performance for medical imaging systems: Executive summary of AAPM TG18 report. Medical physics. 32. 1205-25. 10.1118/1.1861159.  
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