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Title: Compact X-ray collimator

Abstract: An X-ray collimator comprising an X-ray shielded enclosure having aligned entrance and exit apertures for permitting passage of an X-ray beam, the exit aperture having a generally rectangular configuration defined by edges of two orthogonally disposed pairs of opposing rotatable exit shutter elements. Each of the exit shutter elements has a generally semi-cylindrical configuration and is concentrically disposed about a respective axis of rotation. Each pair of semi-cylindrical exit shutter elements is mounted for opposing rotatable movement within the other pair of semi-cylindrical exit shutter elements. The entrace aperture of the housing may be defined by two orthogonally disposed pairs of opposing shutter plates, one pair thereof being directly linked to an associated pair of semi-cylindrical exit shutter elements for corresponding movement therewith.


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Inventors: Cutter, James W. (Hollister, CA)

Application Number: 06/161108
Filing Date: 1980-06-19
Publication_date: 1983-04-19
Assignee: MACHLETT LAB INC

Primary Class(es): 378/153 976/DIG.430
Other Classes: A61B6/06; G21K1/04; G21K1/02; A61B6/06
US Patent Ref:
2332339October, 1943Pratt49/324Valance or the like
2542196February, 1951Haupt250/511X-ray apparatus
3452964July, 1969Bibeault49/324PORTABLE LIFTING AND/OR SPRING WINDING DEVICE
3829701August, 1974HuraRADIATION COLLIMATOR
3936647February, 1976Fekete250/511X-ray collimator for controlling the emission of secondary radiation
3947690March, 1976PeyserRadiation limiting means
4128767December, 1978Stodberg250/513X-ray primary radiation diaphragm assembly
4246488January, 1981Hura250/511Radiation collimator

Other Refs: GB1083402
September, 1967
Other References: James et al., Mathematics Dictionary, Digest Press, Van Nuys Calif., 1946, pp. 62-63.

Primary Examiner: Smith, Alfred E.
Assistant Examiner: Grigsby; T. N.
Attorney: Meaney, John T.
Pannone, Joseph D.
Sharkansky, Richard M.
Claims