X-ray or gamma ray systems or devices – Photographic detector support – Dental
Patent
1990-01-18
1990-09-11
Arnold, Bruce Y.
X-ray or gamma ray systems or devices
Photographic detector support
Dental
350 38, 378 36, G03H 110
Patent
active
049559745
ABSTRACT:
Apparatus for x-ray microholography of living biological materials. A Fourier transform holographic configuration is described as being most suitable for the 3-dimensional recording of the physical characteristics of biological specimens. The use of a spherical scatterer as a reference and a charge-coupled device two-dimensional detector array placed in the forward direction relative to the incident x-radiation for viewing electromagnetic radiation simultaneously scattered from both the specimen and the reference scatterer permits the ready reconstruction of the details of the specimen from the fringe pattern detected by the charge-coupled device. For example, by using a nickel reference scatter at 4.5 nm, sufficient reference illumination is provided over a wide enough angle to allow similar resolution in both transverse and longitudinal directions. Both laser and synchrotron radiation sources are feasible for generating microholographs. Operation in the water window (2.4 to 4.5 nm) should provide maximum contrast for features of the specimen and spatial resolution on the order of the wavelength of x-radiation should be possible in all three dimensions, which is sufficient for the visualization of many biological features. It is anticipated that the present apparatus will find utility in other areas as well where microscopic physical details of a specimen are important. A computational procedure which enables the holographic data collected by the detector to be used to correct for misalignments introduced by inexact knowledge of the relative positions of the spherical reference scatterer and the sample under investigation has been developed. If the correction is performed prior to reconstruction, full compensation can be achieved and a faithfully reconstructed image produced.
REFERENCES:
patent: 4536883 (1985-08-01), Chapline Jr.
Boyer Keith
Haddad Waleed S.
Rhodes Charles K.
Solem Johndale C.
Arnold Bruce Y.
Freund Samuel M.
MCR Technology Corporation
Ryan J.
LandOfFree
Apparatus for generating x-ray holograms does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for generating x-ray holograms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for generating x-ray holograms will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1182255