Patents Assigned to Nova R&D, Inc.
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Publication number: 20130044248Abstract: New sensors and different embodiments of multi-channel integrated circuit are provided. The new high energy and spatial resolution sensors use both solid state and scintillator detectors. Each channel of the readout chip employs low noise charge sensitive preamplifier(s) at its input followed by other circuitry. The different embodiments of the sensors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for widely different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses all these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: ApplicationFiled: January 7, 2011Publication date: February 21, 2013Applicant: NOVA R & D, INC.Inventors: Tumay O. Tumer, Martin Clajus, Robert F. Calderwood, Gerard Visser
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Patent number: 8120683Abstract: An integrated application specific integrated circuit having a detection layer, a time delayed integration capability, data acquisition electronics, and a readout function is provided for detecting breast cancer in women. The detection layer receives x-ray radiation and converts the received energy to electron pairs, one of which is received by pixels. The time delay integration is on the chip and a part of the readout architecture. The detector may be a hybrid silicon detector (SiPD), a CdZnTe detector, or a GaAs detector.Type: GrantFiled: April 6, 2000Date of Patent: February 21, 2012Assignee: Nova R & D, Inc.Inventors: Tumay O Tumer, Shi Yin, Dale G. Maeding, James Asbrock, Martin Yaffe, Gordon Mawdsley, James Mainprize
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Publication number: 20110248765Abstract: A readout electronics scheme is under development for high resolution, compact PET (positron emission tomography) imagers based on LSO (lutetium ortho-oxysilicate, Lu2SiO5) scintillator and avalanche photodiode (APD) arrays. The key is to obtain sufficient timing and energy resolution at a low power level, less than about 30 mW per channel, including all required functions. To this end, a simple leading edge level crossing discriminator is used, in combination with a transimpedance preamplifier. The APD used has a gain of order 1,000, and an output noise current of several pA/?Hz, allowing bipolar technology to be used instead of CMOS, for increased speed and power efficiency. A prototype of the preamplifier and discriminator has been constructed, achieving timing resolution of 1.5 ns FWHM, 2.7 ns full width at one tenth maximum, relative to an LSO/PMT detector, and an energy resolution of 13.6% FWHM at 511 keV, while operating at a power level of 22 mW per channel.Type: ApplicationFiled: October 8, 2010Publication date: October 13, 2011Applicant: NOVA R&D, INC.Inventors: Tumay O. Tumer, Martin Clajus, Gerard Visser
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Publication number: 20110218432Abstract: SPECT pixel detectors could be mounted onto moving subjects, such as small rats, to allow live scanning and/or imaging of moving subjects in their natural environment. Solid state monolithic pixel detectors are used for compactness and portability. The pixel detector is designed to be directly read out by integrated circuits and could be flip-chip mounted on the integrated circuit. The detector systems can also wirelessly transmit image data to save space and for ease of portability.Type: ApplicationFiled: February 7, 2011Publication date: September 8, 2011Applicant: NOVA R&D, INC.Inventor: Tumay O. Tumer
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Patent number: 7868665Abstract: New sensors and different embodiments of multi-channel integrated circuit are provided. The new high energy and spatial resolution sensors use both solid state and scintillator detectors. Each channel of the readout chip employs low noise charge sensitive preamplifier(s) at its input followed by other circuitry. The different embodiments of the sensors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for widely different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses all these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: GrantFiled: March 5, 2003Date of Patent: January 11, 2011Assignee: Nova R&D, Inc.Inventors: Tumay O Tumer, Martin Clajus, Robert F Calderwood, Gerard Visser
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Patent number: 7818047Abstract: A readout electronics scheme is under development for high resolution, compact PET (positron emission tomography) imagers based on LSO (lutetium ortho-oxysilicate, Lu2SiO5) scintillator and avalanche photodiode (APD) arrays. The key is to obtain sufficient timing and energy resolution at a low power level, less than about 30 mW per channel, including all required functions. To this end, a simple leading edge level crossing discriminator is used, in combination with a transimpedance preamplifier. The APD used has a gain of order 1,000, and an output noise current of several pA/?Hz, allowing bipolar technology to be used instead of CMOS, for increased speed and power efficiency. A prototype of the preamplifier and discriminator has been constructed, achieving timing resolution of 1.5 ns FWHM, 2.7 ns full width at one tenth maximum, relative to an LSO/PMT detector, and an energy resolution of 13.6% FWHM at 511 keV, while operating at a power level of 22 mW per channel.Type: GrantFiled: November 8, 2002Date of Patent: October 19, 2010Assignee: Nova R&D, Inc.Inventors: Tumay O Tumer, Martin Clajus, Gerard Visser
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Publication number: 20100116999Abstract: New sensors, pixel detectors and different embodiments of multi-channel integrated circuit are disclosed. The new high energy and spatial resolution sensors use solid state detectors. Each channel or pixel of the readout chip employs low noise preamplifier at its input followed by other circuitry. The different embodiments of the sensors, detectors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: ApplicationFiled: December 14, 2009Publication date: May 13, 2010Applicant: NOVA R&D, INC.Inventors: Tümay Tümer, Martin Clajus
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Patent number: 7634061Abstract: New sensors, pixel detectors and different embodiments of multi-channel integrated circuit are disclosed. The new high energy and spatial resolution sensors use solid state detectors. Each channel or pixel of the readout chip employs low noise preamplifier at its input followed by other circuitry. The different embodiments of the sensors, detectors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: GrantFiled: March 28, 2005Date of Patent: December 15, 2009Assignee: Nova R & D, Inc.Inventors: Tümay O. Tümer, Martin Clajus
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Publication number: 20090290680Abstract: New sensors, pixel detectors and different embodiments of multi-channel integrated circuit are disclosed. The new high energy and spatial resolution sensors use solid state detectors. Each channel or pixel of the readout chip employs low noise preamplifier at its input followed by other circuitry. The different embodiments of the sensors, detectors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: ApplicationFiled: March 28, 2005Publication date: November 26, 2009Applicant: NOVA R & D, INC.Inventors: Tumay O. Tumer, Martin Clajus
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Patent number: 7417472Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: GrantFiled: September 15, 2006Date of Patent: August 26, 2008Assignee: Nova R&D, Inc.Inventors: Tümay O. Tümer, Gerard Visser
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Publication number: 20070057699Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: ApplicationFiled: September 15, 2006Publication date: March 15, 2007Applicant: NOVA R & D, INC.Inventors: Tumay Tumer, Gerard Visser
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Patent number: 7126386Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: GrantFiled: February 18, 2004Date of Patent: October 24, 2006Assignee: Nova R&D, Inc.Inventors: Tümay O. Tümer, Gerard Visser
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Publication number: 20040239377Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: ApplicationFiled: February 18, 2004Publication date: December 2, 2004Applicant: NOVA R & D, INC.Inventors: Tumay O. Tumer, Gerard Visser
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Patent number: 6720812Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: GrantFiled: October 24, 2002Date of Patent: April 13, 2004Assignee: Nova R&D, Inc.Inventors: Tumay O Tumer, Gerard Visser
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Publication number: 20040017224Abstract: New sensors and different embodiments of multi-channel integrated circuit are provided. The new high energy and spatial resolution sensors use both solid state and scintillator detectors. Each channel of the readout chip employs low noise charge sensitive preamplifier(s) at its input followed by other circuitry. The different embodiments of the sensors and the integrated circuit are designed to produce high energy and/or spatial resolution two-dimensional and three-dimensional imaging for widely different applications. Some of these applications may require fast data acquisition, some others may need ultra high energy resolution, and a separate portion may require very high contrast. The embodiments described herein addresses all these issues and also other issues that may be useful in two and three dimensional medical and industrial imaging.Type: ApplicationFiled: March 5, 2003Publication date: January 29, 2004Applicant: NOVA R & D, INC.Inventors: Tumay O. Tumer, Martin Clajus, Robert F. Calderwood, Gerard Visser
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Publication number: 20030141906Abstract: A multi-channel integrated circuit is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge sensitive amplifier at its input followed by other circuitry such as shaper, pole-zero, peak hold, different comparators, buffers and digital control and readout. Each channel produces a self-trigger and a fast timing output. Channel-to-channel time differences are also recorded. Integrated circuit also provides a large dynamic range to facilitate large range of applications. The trigger threshold can be adjusted to provide energy discrimination. The chip has different, externally selectable, operational modes including a sparse readout mode in which only the channels which have received signals greater than a preselected threshold value are read out. The sparse readout mode results in increased data throughput, thus providing fast data acquisition capabilities.Type: ApplicationFiled: October 24, 2002Publication date: July 31, 2003Applicant: NOVA R&D, INC.Inventors: Tumay O. Tumer, Gerard Visser
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Publication number: 20030105397Abstract: A readout electronics scheme is under development for high resolution, compact PET (positron emission tomography) imagers based on LSO (lutetium ortho-oxysilicate, Lu2SiO5) scintillator and avalanche photodiode (APD) arrays. The key is to obtain sufficient timing and energy resolution at a low power level, less than about 30 mW per channel, including all required functions. To this end, a simple leading edge level crossing discriminator is used, in combination with a transimpedance preamplifier. The APD used has a gain of order 1,000, and an output noise current of several pA/{square root}Hz, allowing bipolar technology to be used instead of CMOS, for increased speed and power efficiency. A prototype of the preamplifier and discriminator has been constructed, achieving timing resolution of 1.5 ns FWHM, 2.7 ns full width at one tenth maximum, relative to an LSO/PMT detector, and an energy resolution of 13.6% FWHM at 511 keV, while operating at a power level of 22 mW per channel.Type: ApplicationFiled: November 8, 2002Publication date: June 5, 2003Applicant: NOVA R&D, Inc.Inventors: Tumay O. Tumer, Martin Clajus, Gerard Visser
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Patent number: 5943388Abstract: A CdZnTe solid state detector application specific integrated circuit is used for detection of radiation. The chip and circuitry is under control of a main computer which provides control signals to a solid state detector chip module which provides threshold level and count information to the computer for processing into an image. The processed image may be a tomographic image and/or a multispectral image wherein image colors represent different energy bands of received x-rays. The information used from different energy band images is used to identify different materials contained in an object being scanned.Type: GrantFiled: July 24, 1997Date of Patent: August 24, 1999Assignee: Nova R & D, Inc.Inventor: Tumay O. Tumer
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Patent number: 5696458Abstract: A multi-channel readout chip is provided in which each channel has an analog section and a digital section. Each channel of the readout chip employs low noise charge amplifiers with self trigger and calibration capabilities to provide timing information with better than 20 nanosecond precision. The trigger threshold can be adjusted to provide energy discrimination. The chip has a sparse readout function in which only the channels which have received signals greater than a preselected threshold value are readout, thus providing fast data acquisition capabilities.Type: GrantFiled: June 2, 1995Date of Patent: December 9, 1997Assignee: Nova R&D, Inc.Inventors: Tumay O. Tumer, Bo Pi, Frank L. Augustine