1
Abraham Naparstek: Correction for polychromatic X-ray distortion in CT images. U S Philips Corporation, Thomas A Briody, William J Streeter, Jack E Haken, August 12, 1980: US04217641 (49 worldwide citation)

A method and apparatus which corrects the polychromatic distortion of CT images which is produced by the non-linear interaction of body constituents with a polychromatic X-ray beam. A CT image is processed to estimate the proportion of the attenuation coefficients of the constituents in each pixel e ...


2
Johannes M Van Eggermond, Russell Whitman II, Abraham Naparstek, Stamatis M Rombotis: Method and apparatus for MR imaging. North American Philips Corporation, Jack E Haken, February 27, 1990: US04903704 (9 worldwide citation)

An MR imaging method and apparatus especially adapted for invivo cardiac MR imaging, rejects data acquired during periods of arrhythmia while maintaining the magnetic fields and pulsing of the RF coils during such periods. Data acquisition is resumed after M cycles of regular period, and after remea ...