High-resolution arthrosonography of the temporomandibular joint with video and computer support

Robert Sader; Hans-Florian Uli Zeilhofer; Herbert Deppe; Hans-Henning Horch; Bettina Kling

doi:10.1117/12.209713

24 May 1995 High-resolution arthrosonography of the temporomandibular joint with video and computer support

Robert Sader, Hans-Florian Uli Zeilhofer, Herbert Deppe, Hans-Henning Horch, Bettina Kling

Proceedings Volume 2433, Medical Imaging 1995: Physiology and Function from Multidimensional Images; (1995) https://doi.org/10.1117/12.209713
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

Ultrasound imaging of the temporomandibular joint has been problematic due to the lower frequency of the transducers used up to the present time. Imaging of temporomandibular joint structures being utilizable for diagnosis and therapy was only possible through time-consuming and expensive radiological image yielding procedures (computertomography, magnetic resonance imaging). 84 temporomandibular joints in 42 patients were examined clinically, radiologically, by axiographic tracing, magnetic resonance imaging and ultrasound imaging. An ultrasound unit was used with a high- frequency 13MHz transducer. The temporomandibular joint was examined preauricularily; by this the lateral section of the joint could be represented. The image sequences in functional condylus movements were taped via a video output into a film recorder. Selected ultrasound images from the beginning to the end of the movement could then be digitalized and read into a personal computer to be evaluated. The computer then calculated a line of movement and the angle of the joint's course. By ultrasound imaging the joint space could be represented and measured clearly. Compared with the space measured in the magnetic resonance image the value determined by ultrasonography was a tenth power more exact. The computer-supported image analysis of the condylus movements led to an exact presentation of the condylus course. The sonographically determined condylar guidance corresponded to the value traced by axiography with high significance within a range of 3 degrees. The temporomandibular joint's disc could be localized just as exactly as with the magnetic resonance imaging. The use of a 13MHz transducer offers a new low-cost method of noninvasive dynamic imaging of important temporomandibular joint structures. The possibility of video and computer support enables movement analysis and opens new possibilities in the morphological and functional evaluation of the temporomandibular joint.

Citation Download Citation

Robert Sader, Hans-Florian Uli Zeilhofer, Herbert Deppe, Hans-Henning Horch, and Bettina Kling "High-resolution arthrosonography of the temporomandibular joint with video and computer support", Proc. SPIE 2433, Medical Imaging 1995: Physiology and Function from Multidimensional Images, (24 May 1995); https://doi.org/10.1117/12.209713

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KEYWORDS

Transducers

Ultrasonography

Magnetic resonance imaging

Video

Magnetism

Motion analysis

Mouth

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