A Dynamic Image Quality Evaluation of Videofluoroscopy Images: Considerations for Telepractice Applications

Burns, Clare L., Keir, Benjamin, Ward, Elizabeth C., Hill, Anne J., Farrell, Anna, Phillips, Nick and Porter, Linda (2015) A Dynamic Image Quality Evaluation of Videofluoroscopy Images: Considerations for Telepractice Applications. Dysphagia, 30 4: 473-481. doi:10.1007/s00455-015-9626-1


Author Burns, Clare L.
Keir, Benjamin
Ward, Elizabeth C.
Hill, Anne J.
Farrell, Anna
Phillips, Nick
Porter, Linda
Title A Dynamic Image Quality Evaluation of Videofluoroscopy Images: Considerations for Telepractice Applications
Journal name Dysphagia   Check publisher's open access policy
ISSN 1432-0460
0179-051X
Publication date 2015-05-27
Sub-type Article (original research)
DOI 10.1007/s00455-015-9626-1
Volume 30
Issue 4
Start page 473
End page 481
Total pages 9
Place of publication New York, NY, United States
Publisher Springer New York
Collection year 2016
Language eng
Abstract High-quality fluoroscopy images are required for accurate interpretation of videofluoroscopic swallow studies (VFSS) by speech pathologists and radiologists. Consequently, integral to developing any system to conduct VFSS remotely via telepractice is ensuring that the quality of the VFSS images transferred via the telepractice system is optimized. This study evaluates the extent of change observed in image quality when videofluoroscopic images are transmitted from a digital fluoroscopy system to (a) current clinical equipment (KayPentax Digital Swallowing Workstation, and b) four different telepractice system configurations. The telepractice system configurations consisted of either a local C20 or C60 Cisco TelePresence System (codec unit) connected to the digital fluoroscopy system and linked to a second remote C20 or C60 Cisco TelePresence System via a network running at speeds of either 2, 4 or 6 megabits per second (Mbit/s). Image quality was tested using the NEMA XR 21 Phantom, and results demonstrated some loss in spatial resolution, low contrast detectability and temporal resolution for all transferred images when compared to the fluoroscopy source. When using higher capacity codec units and/or the highest bandwidths to support data transmission, image quality transmitted through the telepractice system was found to be comparable if not better than the current clinical system. This study confirms that telepractice systems can be designed to support fluoroscopy image transfer and highlights important considerations when developing telepractice systems for VFSS analysis to ensure high-quality radiological image reproduction.
Keyword Deglutition
Deglutition disorders
Dysphagia
Image quality
Telepractice
Videofluoroscopy swallow study
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Health and Rehabilitation Sciences Publications
 
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