1
Edward J Seppi, John M Pavkovich, Edward G Shapiro: X-ray scanner with a source emitting plurality of fan beams. August 2, 1994: US05335255 (85 worldwide citation)

A slow scanning CT Scanner providing slice data simultaneously for a plurality of slices so as to avoid blurring between adjacent slices due to patient movement.


2
Edward J Seppi, Edward G Shapiro, Robert L Anderson: Computer tomography apparatus using image intensifier detector. Varian Associates, December 2, 1997: US05692507 (80 worldwide citation)

Disclosed is a low cost computer tomographic (CT) scanner system specifically designed for radiation therapy treatment planning. A 512-channel photo-diode array with digitizing electronics converts image intensifier optical projection data directly into digital signals and has a dynamic range on the ...


3
Edward J Seppi, Edward G Shapiro, John M Pavkovich: Method for improving the dynamic range of an imaging system. Varian Associates, Peter J Sgarbossa, December 1, 1992: US05168532 (62 worldwide citation)

Disclosed is a method for improving the dynamic resolution of an imaging system. The method employs a dual sampling or exposure technique which samples light from an image intensifier over a long and a short sample interval. When the resulting measurement for the long sample interval exceeds a thres ...


4
Edward J Seppi, Edward G Shapiro, John M Pavkovich: Electronically enhanced X-ray detector apparatus. Varian Associates, Peter J Sgarbossa, May 26, 1992: US05117445 (52 worldwide citation)

The detector of the present invention is suitable for use in a radiation therapy simulator machine. The detector comprises an X-ray image intensifier tube to convert X-rays into photons, a linear array of photodiodes to convert the photons to electrical signals, optical means for coupling the photon ...


5
Edward J Seppi, Edward G Shapiro, John M Pavkovich: Method for increasing the accuracy of a radiation therapy apparatus. Varian Associates, Limbach Limbach & Sutton, March 24, 1992: US05099505 (51 worldwide citation)

Disclosed is a method for increasing the accuracy of images obtained in radiation therapy apparatus, such as a computed tomography simulator which employs an image intensifier and a photodiode detector for converting light from the image intensifier to electrical signals for further processing. The ...


6
Edward G Shapiro, Edward J Seppi, John M Pavkovich, Peter Munro, Stanley W Johnsen, Richard E Colbeth: Multi-mode cone beam CT radiotherapy simulator and treatment machine with a flat panel imager. Varian Medical Systems, Blakely Sokoloff Taylor & Zafman, May 17, 2011: US07945021 (32 worldwide citation)

A multi-mode cone beam computed tomography radiotherapy simulator and treatment machine is disclosed. The radiotherapy simulator and treatment machine both include a rotatable gantry on which is positioned a cone-beam radiation source and a flat panel imager. The flat panel imager captures x-ray ima ...


7
Richard E Colbeth, John M Pavkovich, Edward J Seppi, Edward G Shapiro: Multiple mode digital X-ray imaging system. Varian Medical Systems, Hunter L Auyang, October 19, 1999: US05970115 (31 worldwide citation)

A multiple mode digital X-ray imaging system providing for preprocessing "binning" of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previo ...


8
Edward G Shapiro, Edward J Seppi, John M Pavkovich, Peter Munro, Stanley W Johnsen, Richard E Colbeth: Multi-mode cone beam CT radiotherapy simulator and treatment machine with a flat panel imager. Varian Medical Systems, Blakely Sokoloff Taylor & Zafman, February 14, 2012: US08116430 (29 worldwide citation)

A multi-mode cone beam computed tomography radiotherapy simulator and treatment machine is disclosed. The radiotherapy simulator and treatment machine both include a rotatable gantry on which is positioned a cone-beam radiation source and a flat panel imager. The flat panel imager captures x-ray ima ...


9
Richard E Colbeth, John M Pavkovich, Edward J Seppi, Edward G Shapiro: Multiple mode digital X-ray imaging system. Varian Medical Systems, Mark A Dalla Valle, Wildman Harrold Allen & Dixon, July 23, 2002: US06424750 (22 worldwide citation)

A multiple mode digital X-ray imaging system providing for preprocessing “binning” of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previo ...


10
Richard E Colbeth, John M Pavkovich, Edward J Seppi, Edward G Shapiro: Multiple mode digital X-ray imaging system. Varian Medical Systems Technologies, Vedder Price Kaufman & Kammholz P C, June 1, 2004: US06744912 (11 worldwide citation)

A multiple mode digital X-ray imaging system providing for preprocessing “binning” of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previo ...