Radiation exposure system

Details Radiation exposure system Radiation exposure system

1996-10-02

1998-03-31

Porta, David P.

X-ray or gamma ray systems or devices

Photographic detector support

Sheet film cassette

378158, 378159, G21K 300

Patent

active

057346933

ABSTRACT:
A system of radiography includes the provision of a cassette which is to be subjected to exposure from radiation beam. The cassette includes a screen layer and a filter layer having regions of different optical density and an imaging film. The filter acts to reduce the exposure of the film to the effect of radiation. The cassette is useful for dental images, particularly of the temporamandibular joint.

REFERENCES:
patent: 2506342 (1950-05-01), Burke
patent: 3499150 (1970-03-01), Tajima et al.
patent: 4082957 (1978-04-01), Morlan
patent: 4641336 (1987-02-01), Gastrin
patent: 4772803 (1988-09-01), Horiuchi et al.
patent: 5282254 (1994-01-01), Chiu et al.
Product Information Sheet from Dr. Goos-Suprema, "X-Ray Intensifying Screens" no date.
Achieving improved visualization of the temporomandibular joint condyle and fossa in the sagittal cephalogram and a pilot study of their relationships in habital occlusion, "Stanley Braun, DDS, MME, American Journal of Orthodontics and Dentofacial Orthopedics," Jun. 1996 pp. 635-638.
"A dual sensitivity screen system for TMJ image enhancement in cephalometric radiography: Sensitometric evaluation," Wakoh, et al.: Angle Orthod, dated Dec. 6, 1993.

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