Technique for obtaining sub-pixel spatial resolution and correct

Details Technique for obtaining sub-pixel spatial resolution and correct Technique for obtaining sub-pixel spatial resolution and correct

1997-12-17

1999-12-14

Bruce, David Vernon

X-ray or gamma ray systems or devices

Specific application

Absorption

25037001, 25037009, 2503701, G01N 2304, G01T 124

Patent

active

06002741&

ABSTRACT:
A method and apparatus for obtaining the planar location with sub-pixel resolution and corrected energy of a gamma or X-ray photon interacting with a room temperature solid state detector of given thickness. The detector comprises two electrodes of negative and positive polarities. One of the electrodes is common, and the other is segmented being formed with segmented readout elements. Each of the readout elements defines a pixel size. Depending on that the negative or positive electrode is segmented, respectively, negative-induces charge signals are induced on the readout elements or both a positive-induced charge signal is induced on a central readout element and negative-induced charge signals are induced on adjacent readout elements. Accordingly, respective induced-charge signals are simultaneously measured and statistically correlated on the respective readout elements with detector response templates so as to obtain a best fit template, thereby determining the photon's energy, location and depth of interaction.

REFERENCES:
patent: 5365069 (1994-11-01), Eisen et al.
patent: 5440130 (1995-08-01), Cox et al.
patent: 5528043 (1996-06-01), Spivey et al.
patent: 5693947 (1997-12-01), Morton
patent: 5825033 (1998-10-01), Barrett et al.
patent: 5887049 (1999-03-01), Fossum
"Current state-of-the-art industrial and research applications using room-temperature CdTe and CdZnTe solid state detectors", Y. Eisen; Nuclear Instruments and Methods in Physics Research; 380, (1996), pp. 431-439.
"Correction of incomplete charge collection in CdTe detectors"; Eisen et al., Nuclear Instruments & Methods in Physics Research, 353, (1994), pp. 60-66.
"Single-polarity charge sensing in ionization detectors using coplanar electrodes", P. N. Luke, Nov., 1994. Appl. Phys. Lett. 65.
"A new 2-dimensional high resolution Si detector for B-and .gamma.-radiograpy", A. Czemak et al., Nuclear Instruments and Methods in Physics Research, 360, (1995), pp. 290-296.
"Some New Developments in the Field of High Atomic Number Materials", M. Cuzin, Nuclear Instruments and Methods in Physics Research 253 (1987) pp. 407-417.
"Cd.sub.1-x Zn.sub.x Te Gamma Ray Detectors", J. Butler et al., IEEE Transactions on Nuclear Science, vol. 39, No. 4, 1992 pp. 605-609.
"Charge Transport in Arrays of Semiconductor Gamma-Ray Detectors", H. Barrett et al., The American Physical Society, vol. 75, No. 1, Jul. 3, 1995, pp. 156-159.

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