Coherent-scatter computed tomography

Details Coherent-scatter computed tomography Coherent-scatter computed tomography

2004-10-05

2009-08-25

Glick, Edward J (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S004000, C378S019000, C378S087000, C378S901000

Reexamination Certificate

active

07580499

ABSTRACT:
Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.

REFERENCES:
patent: 475172 (1892-05-01), Airey et al.
patent: 6470067 (2002-10-01), Harding
patent: 6529575 (2003-03-01), Hsieh
Van Stevendaal et al., Filtered Back-Projection Reconstruction Technique for Coherent-Scatter Computed Tomography, May 15, 2003, Medical Imaging 2003: Image Processing, SPIE vol. 5032, pp. 1810-1819.
Defrise et al., Improved 2D rebinning of helical cone-beam CT data using John's Equation, Nov. 2002, 2002 IEEE Nuclear Science Symposium Conference Record, vol. 3, pp. 1463-1469.
Van Stevendaal et al., A reconstruction algorithm for coherent scatter computed tomography based on filtered back-projection, Aug. 22, 2003, Medical Physics, vol. 30, No. 9, pp. 2465-2474.
Schlomka et al., Coherent Scatter Computed Tomography—A Novel Medical Imaging Technique, Jun. 5, 2003, Medical Imaging 2003: Physics of Medical Imaging, SPIE vol. 5030, pp. 256-265.

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