Simultaneous multilayer arthrotomography of the temporomandibular joint using photostimulable phosphor computed radiography.
作者信息
Honda E, Ohbayashi N, Sasaki T, Kino K
机构信息
Department of Dental Radiology and Radiation Research, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
出版信息
Dentomaxillofac Radiol. 1997 Sep;26(5):304-11. doi: 10.1038/sj.dmfr.4600263.
OBJECTIVE
To compare the image quality of photostimulable phosphor computed radiography (CR) with that of a conventional screen-film system for simultaneous multilayer arthrotomography of the temporomandibular joint (TMJ).
METHODS
X-ray attenuation, resolution and granularity was compared. Simultaneous multilayer tomography of TMJ was performed using a skull phantom and diagnostic quality of bone structures estimated. The clinical outcome is demonstrated in two typical cases.
RESULTS
X-ray attenuation was larger with CR. Granularity was more prominent in edge-enhanced CR images and was associated with inferior diagnostic quality. However, it was improved by using a higher tube voltage. Clinical CR without edge enhancement showed a similar resolution to the conventional system but this decreased with enhancement. In an enhanced arthrotomogram, the boundary between contrast medium, bone and soft tissue were clearly defined and a fibrous adhesion also easily seen.
CONCLUSION
Photostimulable phosphor CR is an acceptable alternative for simultaneous multilayer arthrotomography of the TMJ.
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