DocumentCode :
2091537
Title :
AREA: An augmented reality system for epidural anaesthesia
Author :
Ashab, H.A. ; Lessoway, V.A. ; Khallaghi, S. ; Cheng, Andrew ; Rohling, Robert ; Abolmaesumi, P.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of British Columbia, Vancouver, BC, Canada
fYear :
2012
fDate :
Aug. 28 2012-Sept. 1 2012
Firstpage :
2659
Lastpage :
2663
Abstract :
Purpose: Spinal needle injection procedures are used for anesthesia and analgesia, such as lumbar epidurals. These procedures require careful placement of a needle, both to ensure effective therapy delivery and to avoid damaging sensitive tissue such as the spinal cord. An important step in such procedures is the accurate identification of the vertebral levels, which is currently performed using manual palpation with a reported 30% success rate for correct identification. Methods: An augmented reality system was developed to help identify the lumbar vertebral levels. The system consists of an ultrasound transducer tracked in real time by a trinocular camera system, an automatic ultrasound panorama generation module that provides an extended view of the lumbar vertebrae, an image processing technique that automatically identifies the vertebral levels in the panorama image, and a graphical interface that overlays the identified levels on a live camera view of the patient´s back. Results: Validation was performed on ultrasound data obtained from 10 subjects with different spine arching. The average success rate for segmentation of the vertebrae was 85%. The automatic level identification had an average accuracy of 6.6 mm. Conclusion: The prototype system demonstrates better accuracy for identifying the vertebrae than traditional manual methods.
Keywords :
augmented reality; biomedical transducers; graphical user interfaces; image segmentation; medical image processing; patient care; ultrasonic transducers; AREA; Augmented Reality System for Epidural Anaesthesia; analgesia; anesthesia; automatic ultrasound panorama generation module; graphical interface; image processing technique; lumbar epidurals; lumbar vertebrae extended view; panorama image; spinal needle injection procedures; trinocular camera system; ultrasound transducer; vertebra level; vertebrae segmentation; vertebral level identification; Accuracy; Anesthesia; Back; Image segmentation; Needles; Transducers; Ultrasonic imaging; augmented reality; image guided intervention; interventional ultrasound; panorama ultrasound; Anesthesia, Epidural; Anesthesia, Spinal; Diagnostic Imaging; Humans; Image Processing, Computer-Assisted; Lumbar Vertebrae;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
ISSN :
1557-170X
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/EMBC.2012.6346511
Filename :
6346511
Link To Document :
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