Bragger, D., L. Pasquali, et al. (1988). ñComputer-assisted densitometric image analysis in periodontal radiography.î J Clin Periodontol 15: 27-37.
Bragger, U. (1988). ñDigital imaging in periodontal radiography.î J Clin Perio 15: 551-557.
Bragger, U., J. Litch, et al. (1987). ñComputer assisted densitometric image analysis for the quantitation of radiographic alveolar bone changes.î J Periodont Res 22: 227-229.
Bragger, U. and L. Pasquali (1989). ñColor conversion of Alveolar Bone Density Changes in Digital Subtraction Images.î J Clin Perio 16: 209-214.
Bragger, U., L. Pasquali, et al. (1988). ñComputer assisted densitometric image analysis in periodontal radiography. A methodological study.î J Clin Periodontol 15: 27-37.
Bragger, U., L. Pasquali, et al. (1989). ñComputer assisted densitometric image analysis (CADIA) for the assessment of alveolar bone density changes in furcations.î J Clin Perio 16: 42-52.
Duckworth, J., P. Judy, et al. (1983). ñA method for the geometric and densitometric standardization of intraoral radiographs.î J periodontol 54: 435-440.
Grondahl, H., K. Grondahl, et al. (1983). ñA digital subtraction technique for dental radiography.î Oral Surg 55: 96-102.
Grondahl, H.-G. and K. Grondahl (1983). ñSubtraction radiography for the diagnosis of peridontal bone lesions.î Oral Surgery 55: 208-213.
Grondahl, K., H. Grondahl, et al. (1984). ñInfluence of variations in projection geometry on the detectability of peridontal bone lesions A comparision between subtraction radiography and conventional radiographic technique.î J Clin Periodontol 11: 411-420.
Grondahl, K., H.-G. Grondahl, et al. (1983). ñDigital subtraction radiography for diagnosis of periodontal bone lesions with simulated high-speed systems.î Oral Surg Oral Med Oral Pathol 55: 313-318.
Grondahl, K., K. Kullendorff, et al. (1988). ñDetectability of artificial marginal bone lesions as a function of lesion depth A comparision between subtraction radiography and conventional radiographic technique.î J Clin Periodontol 15: 156-162.
Hausmann, E., L. Christersson, et al. (1985). ñUsefulness of subtraction radiography in the evaluation of periodontal therapy.î J Periodontol (Spec iss): 4-8.
Heaven, T., A. Firestone, et al. (1990). ñQuantitative radiographic measurement of dentinal lesions.î J Dent Res 69: 51-54.
Janssen, P. and J. v. Aden (1989). ñProblems around the in vitro and in vivi application of quantitative digital subtraction radiography.î J Clin Periodontol 16: 232-230.
Janssen, P., W. van Palenstein Helderman, et al. (1989). ñThe effect of in-vivo-occuring errors in the reproducibility of radiographs on the use of the subtraction technique.î J Clin Periodontol 16: 53-58.
Jeffcoat, M., R. Jeffcoat, et al. (1984). ñA new method for the comparison of bone loss measurements on nonstandardized radiographs.î J Perio Res 19: 434-440.
Jeffcoat, M., M. Reddy, et al. (1987). ñExtraoral control of geometry for digital subtraction radiography.î J Periodont Res 22: 396-406.
Kassebaum, D. K., W. McDavid, et al. (1989). ñSpatial resolution requirements for digitizing dental radiographs.î Oral Surg Oral Med Oral Pathol 67: 760-769.
Klinger, H. and W. Wiedemann (1985). ñA method for radiographic longitudinal study of mineral content during in vitro de- and remineralization of dental enamel.î Arch Oral Biol 30: 373-375.
Kullendorff, B., K. Grondahl, et al. (1988). ñSubtraction radiography for the diagnosis of periapical bone lesions.î Endod Dent Traumatol 4: 253-259.
Kundel, H. and G. Revesz (1976). ñLesion conspicuity, structured noise, and film reader error.î AJR 126: 1233-1238.
Lurie, A., R. Greenberg, et al. (1983). ñSubtraction radiology demonstrates crestal bone loss in experimentally induced marginal periodontitis.î Oral Surg 55: 537-542.
McHenry, K., E. Hausmann, et al. (1987). ñMethodological aspects and quantitative adjuncts to computerized subtraction radiography.î J Periodont Res 22: 125-132.
Okano, T., T. Mera, et al. (1990). ñDigital subtraction of radiographs in evaluating alveolar bone changes after initial periodontal therapy.î Oral Surg Oral Med Oral Pathol 69: 258-262.
Okano, T., M. Ohki, et al. (1988). ñQuantitative evaluation of proximal bone lesions using digital subtraction radiography.î Dentomaxillofac Radiol 17: 99-103.
Ortman, L., K. Dunford, et al. (1985). ñSubtraction radiography and computer assisted densitometric analysees of standardized radiographs A comparison study with 125 I absorptiometry.î J of Periodon Res 20: 644-651.
Rethman, M., U. Ruttiman, et al. (1985). ñDiagnosis of bone lesions by subtraction radiography.î J Perio Res 56(6): 324-329.
Revesz, B., H. Kundel, et al. (1974). ñThe influence of structured noise on the detection of radiologic abnormalities.î Invest Radiol 9: 479-486.
Rudolph, D. and S. White (1988). ñFilm-holding instruments for intraoral subtraction radiography.î Oral Surg 65(7): 767-772.
Ruttimann, U., H.-G. Grondahl, et al. (1981). ñExposure geometry and film contrast differences as bases for incomplete cancelation of irrelevant structures in dental subtraction radiograpy.î Proc SPIE 314: 372-377.
Ruttimann, U., R. Webber, et al. (1986). ñA robust digital method for film contrast correction in subraction radiography.î J Perio Res 21: 486-495.
Sewerin, I. (1990). ñDevice for serial intraoral radiography with controlled projection angles.î Tandlaegebladet 94: 613-617.
Steffensen, B., L. Pasquali, et al. (1989). ñCorrection of density changes caused by methodological errors in CADIA.î J Periodont Res 24: 402-408.
Tyndall, D., F. Stanley, et al. (1990). ñDigital subtraction radiography for detection of cortical and cancellous bone changes in the periapical region.î J Endodont 16: 173-178.
Vos, M., P. Hanssen, et al. (1986). ñQuantitative measurement of periodontal bone changes by digital subtraction.î J Periodont Res 21: 583-591.
Webber, R., U. Ruttimann, et al. (1982). ñX-ray image subtraction as a basis for assessment of periodontal changes.î J Perio Res 17: 509-511.
Webber, R., U. Ruttimann, et al. (1990). ñCalibration errors in digital subtraction radiography.î J Periodont Res 25: 268-275.
Webber, R., A. Tzukert, et al. (1989). ñThe effects of beam hardening on digital subtraction radiograhy.î J Perio Res 24: 53-58.
Wenzel, A., M. Larsen, et al. (1991). ñDetection of occlusal caries without cavitation by visual inspection, film-, xero-, and digitized radiographs.î Caries Res 25: 369-375.
Wenzel, A. and I. Sewerin (1991). ñSources of noise in digital subtraction radiography.î Oral Surg Oral Med Oral Pathol 71: 503-508.
Wenzel, A., K. Warrer, et al. (1991). ñDigital subtraction radiography in assessing bone changes in periodontal defects following guided tissue regeneration.î J Clin Periodontol in press:
dove@uthscsa.edu