Abstract
Objective. The aim of this study was to compare panoramic temporomandibular joint radiography,
unenhanced and color-enhanced digital-subtraction radiography with respect to detectability
of simulated osteophytic lesions of the mandibular condyle. Methods. Three dry human skulls with no obvious temporomandibular joint pathology were selected.
Four sizes of bone chips were placed on the anterior aspect of the condyle at medial,
central, and lateral locations. Panoramic radiographs were made with and without the
chips in place. These paired radiographs were digitized, and unenhanced and color-enhanced
digital-subtraction images of the original panoramic images were obtained. Eight observers
evaluated 72 randomized images of each modality for the presence or absence of simulated
osteophytic lesions of the mandibular condyle, grading the images on a 100-point scale.
Results. Az values for overall diagnostic accuracy of the three imaging modalities were 0.5376
for panoramic radiography, 0.7861 for unenhanced digital subtraction radiography,
and 0.7923 for color-enhanced digital-subtraction radiography. Digital-subtraction
radiography improved the detection accuracy of the original panoramic films. Conclusion. Panoramic radiographs were significantly less accurate in the detection of simulated
osteophytic lesions of the mandibular condyle than the two digital-subtraction techniques.
(Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;93:626-31
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Structure of TMJ as viewed on the pantomograph.J Prosthet Dent. 1982; 48: 332-335
- Practical imaging of TMJ.Tex Dent J. 1995; 112: 45-51
- Oral radiology: principles and interpretation.in: 4th ed. : Mosby, St Louis2000: 205-208
- Digital subtraction arthrography of the temporomandibular joint.AJR Am J Roentgenol. 1987; 148: 344-346
- Digitally subtracted linear tomograms: three techniques for measuring condylar displacement.Oral Surg Oral Med Oral Pathol. 1991; 72: 614-620
- Validity of digital subtraction of transcranial plain films in quantification of positional changes of mandibular condyle.Oral Surg Oral Med Oral Pathol. 1991; 71: 748-755
- Digital subtraction of TMJ tomography.Oral Surg Oral Med Oral Pathol. 1993; 75: 122-134
- Color conversion of alveolar bone density changes in digital subtraction images.J Clin Periodontol. 1989; 16: 209-214
- Contrast enhancement as aid to interpretation in digital subtraction radiography.Oral Surg Oral Med Oral Pathol. 1991; 71: 763-769
- Influence of contrast enhancement and pseudocolor transformation on the diagnosis with digital subtraction images (DSI).J Periodontal Res. 1994; 29: 95-102
- Accuracy in detecting bone lesions in vitro with conventional and subtracted direct digital imaging.Dentomaxillofac Radiol. 1995; 24: 232-237
- Basic principles of ROC analysis.Semin Nucl Med. 1978; 8: 283-298
- Some practical issues of experimental design and data analysis in radiological ROC studies.Invest Radiol. 1989; 24: 234-235
- The use of continuous and discrete confidence judgements in receiver operating characteristic studies of diagnostic imaging techniques.Invest Radiol. 1992; 27: 169-172
- Design and analysis: a researcher's handbook.in: 3rd ed. : Prentice Hall, Englewood Cliffs, NJ1991: 356-361
- Influence of variations in projected geometry on the detectability of periodontal bone lesions. A comparison between subtraction radiography and conventional radiographic technique.J Clin Periodontol. 1984; 11: 411-420
- Analysis of sensitivity and specificity of a new digital subtraction system: an in vitro study.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2000; 89: 771-776
- Analysis of condylar position on digitally subtracted Orthophos P-4 and sectograph zonogram images.Int J Adult Orthodon Orthognath Surg. 1995; 10: 201-209
Article info
Publication history
Accepted:
November 4,
2001
Received in revised form:
May 9,
2001
Received:
January 25,
2001
Footnotes
*Reprint requests: Farah Masood, BDS, MS Assistant Professor & Director of Radiology University of Oklahoma, College of Dentistry Department of Oral Diagnosis & Radiology P. O. Box 26901, Stanton Young Blvd Oklahoma City, OK 73190
Identification
Copyright
© 2002 Mosby, Inc. Published by Elsevier Inc. All rights reserved.
