X-ray or gamma ray systems or devices – Specific application – Dental panoramic
Patent
1991-12-13
1993-05-25
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Dental panoramic
378 39, 378 40, 378 98, 378 99, 378147, A61B 614
Patent
active
052146863
ABSTRACT:
A panoramic dental radiography system projects multiple vertical, fan-shaped radiation beams through a subject's teeth and onto multiple detectors, with each fan-shaped beam avoiding the subject's spine. The radiographic source and radiographic detectors are rotated about a vertical axis, so that the detected radiation may be tomographically processed to produce a panoramic image of the teeth. The multiple vertical fan-shaped radiation beams are projected on either side of the spine, to reduce the radiographic dosage to the spine and to prevent the spine from blurring the panoramic radiograph. The resulting multiple projections can be tomosynthetically processed to produce a three-dimensional image of tissues of diagnostic interest, free of image artifacts produced by irradiation of the spine.
REFERENCES:
patent: 4188541 (1980-01-01), Hounsfield
patent: 4239971 (1980-12-01), Cushman
patent: 4259582 (1981-03-01), Albert
patent: 4264824 (1981-04-01), Tosswill
patent: 4304999 (1981-12-01), Richey et al.
patent: 4315157 (1982-02-01), Barnes
patent: 4481650 (1984-11-01), Kinanen
patent: 4589122 (1986-05-01), Nieminen
patent: 4709382 (1987-11-01), Sones
patent: 4731807 (1988-03-01), Plessis et al.
patent: 4741007 (1988-04-01), Virta et al.
patent: 4750196 (1988-06-01), Harding
patent: 4783793 (1988-11-01), Virta et al.
patent: 4788699 (1988-11-01), Dobert et al.
patent: 4817119 (1989-03-01), Ledley et al.
patent: 4847881 (1989-07-01), Heubeck
patent: 4878234 (1989-10-01), Pfeiffer et al.
patent: 4907251 (1990-03-01), Mork et al.
patent: 4991190 (1991-02-01), Mori
patent: 5018177 (1991-05-01), McDavid et al.
patent: 5093852 (1992-03-01), Nishikawa et al.
Tomosynthesis: A Three-Dimensional Radiographic Imaging Technique, D. G. Grant, IEEE Transactions on Bio-Medical Engineering, vol. BME-19, No. 1, Jan., 1972, pp. 20-28.
Computerized Tomosynthesis of Dental Tissues, A. J. Groenhuis et al., Dental Radiology, Oral Surg., vol. 56, No. 2, Aug., 1983, pp. 206-214.
A Prototype Digital Tomographic X-Ray System for Dental Applications, R. A. J. Groenhuis et al., IEEE International Symposium on Medical Images and Icons, Jul. 24-27, 1984, Arlington, Va., pp. 218-221.
Restoration of Digital Multiplane Tomosynthesis by a Constrained Iteration Method, U. E. Ruttimann et al., IEEE Transactions on Medical Imaging, vol. MI-3, No. 3, Sep. 1984, pp. 141-148.
Synthesis of Arbitrary X-Ray Projections from a Finite Number of Existing Projections, SPIE vol. 535-application of Optical Instrumentation in Medicine in XIII (1985) pp. 84-90.
Medical Image Reconstruction: Multiangular Sectional Roentgenography by Computer, R. M. Perry et al., NCAR Technical Note, NCAR-TN/STR-108, Aug., 1975, pp. 1-147.
Chu Kim-Kwok
Porta David P.
Wake Forest University
LandOfFree
Three-dimensional panoramic dental radiography method and appara does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-dimensional panoramic dental radiography method and appara, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-dimensional panoramic dental radiography method and appara will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-903856