US7388534B2
Expired / Lapsed
US
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Adaptive data acquisition for an imaging system
Assignee: GE Precision Healthcare LLC
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Filing: 2006-07-20
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Granted: 2008-06-17
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Expires: 2026-07-20
Abstract
Abstract An adaptive data acquisition circuit ( 26 ) includes an amplifier ( 14 ) for amplifying electrical pulses generated by a detector ( 12 ) responsive to energy incident at the detector. The adaptive data acquisition circuit also includes a counting circuit ( 28 ) for counting amplified electrical pulses generated by the amplifier. In addition, the adaptive data acquisition circuit includes a digital logic circuit ( 30 ) for determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses and for generating a control signal ( 34 ) responsive to the pulse parameter for controlling an operating parameter of the data acquisition circuit.
Inventors
- 👤 Oliver Richard Astley
- 👤 John Eric Tkaczyk
- 👤 Naresh Kesavan Rao
- 👤 James Walter LeBlanc
- 👤 Wen Li
- 👤 Yanfeng Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:05
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/17
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
109 words
An adaptive data acquisition circuit comprising: an amplifier for amplifying electrical pulses generated by a detector responsive to energy incident at the detector, a counting circuit for counting amplified electrical pulses generated by the amplifier; a digital logic circuit for determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses and for generating a control signal responsive to the pulse parameter for controlling an operating parameter of the data acquisition circuit; and a pulse shaper receiving the amplified electrical pulses and generating shaped pulses, wherein the control signal is configured for controlling a shaping time of the pulse shaper.
Claim 2
Dependent Claim
109 words
An adaptive data acquisition circuit comprising: an amplifier for amplifying electrical pulses generated by a detector responsive to energy incident at the detector, a counting circuit for counting amplified electrical pulses generated by the amplifier; a digital logic circuit for determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses and for generating a control signal responsive to the pulse parameter for controlling an operating parameter of the data acquisition circuit; and a pulse shaper receiving the amplified electrical pulses and generating shaped pulses, wherein the control signal is configured for controlling a shaping time of the pulse shaper.
Claim 3
Dependent Claim
23 words
The adaptive data acquisition circuit of claim 1 , wherein the control signal is configured for controlling an amplification parameter of the amplifier.
Claim 4
Dependent Claim
54 words
The adaptive data acquisition circuit of claim 2 , wherein the amplifier comprises a feedback resistor and reset switch, wherein the control signal is configured for controlling a resistance of the feedback resistor and a reset frequency of the amplifier by controlling an operation of the reset switch to selectively short the feedback resistor.
Claim 5
Dependent Claim
30 words
The adaptive data acquisition circuit of claim 2 , wherein the amplifier comprises a feedback capacitor, wherein the control signal is configured for controlling a capacitance of the feedback capacitor.
Claim 6
Dependent Claim
37 words
The adaptive data acquisition circuit of claim 1 , wherein when a level of the pulse parameter is relatively low, the control signal is configured for controlling the pulse shaper to produce a relatively longer shaping time.
Claim 7
Dependent Claim
37 words
The adaptive data acquisition circuit of claim 1 , wherein when a level of the pulse parameter is relatively high, the control signal is configured for continuing the pulse shaper to produce a relatively shorter shaping time.
Claim 8
Dependent Claim
34 words
The adaptive data acquisition circuit of claim 1 , further comprising a discriminator receiving shaped pulses from the pulse shaper, wherein the control signal is configured for adjusting a discrimination threshold of the discriminator.
Claim 9
Dependent Claim
44 words
The adaptive data acquisition circuit of claim 1 , further comprising a switch between the detector and the amplifier, wherein the control signal is configured for operating the switch to selectively couple and decouple the amplifier from a plurality of subprxels of the detector.
Claim 10
Dependent Claim
26 words
The adaptive data acquisition circuit of claim 1 , wherein the digital logic circuit is further configured for generating a control signal responsive to predictive information.
Claim 11
Dependent Claim
18 words
The adaptive data acquisition circuit of claim 1 , wherein the predictive information comprises a predicted pulse parameter.
Claim 12
Dependent Claim
32 words
The adaptive data acquisition circuit of claim 1 , wherein the digital logic circuit is further configured for generating a control signal responsive to a pulse count generated by the counting circuit.
Claim 13
Dependent Claim
13 words
An imaging system comprising the adaptive data acquisition circuit of claim 1 .
Claim 14
Dependent Claim
24 words
The imaging system of claim 12 , wherein the control signal represents an integration signal used for controlling an operation of the imaging system.
Claim 15
Dependent Claim
22 words
The imaging system of claim 13 , wherein a counting circuit output is used for controlling an operation of the imaging system.
Claim 16
Dependent Claim
156 words
An adaptive data acquisition circuit comprising: an amplifier for receiving current purses from an energy detector coupled to an amplifier input and for generating corresponding amplified pulses at an amplifier output a counting circuit coupled to the amplifier output for counting amplified electrical pulses generated by the amplifier; a threshold detector coupled to the amplifier output for generating a threshold exceeded signal when an amplified electrical pulse exceeds a predetermined threshold; a folding circuit coupled to the threshold detector for applying a folding charge to the amplifier input responsive to the threshold exceeded signal; a fold counter coupled to the folding circuit for generating a fold count responsive to a number of times the folding charge is applied to the input of the amplifier; and a controller coupled to the fold counter for generating a control signal responsive to the fold count for use in controlling at least one operating parameter of the data acquisition circuit.
Claim 17
Dependent Claim
156 words
An adaptive data acquisition circuit comprising: an amplifier for receiving current purses from an energy detector coupled to an amplifier input and for generating corresponding amplified pulses at an amplifier output a counting circuit coupled to the amplifier output for counting amplified electrical pulses generated by the amplifier; a threshold detector coupled to the amplifier output for generating a threshold exceeded signal when an amplified electrical pulse exceeds a predetermined threshold; a folding circuit coupled to the threshold detector for applying a folding charge to the amplifier input responsive to the threshold exceeded signal; a fold counter coupled to the folding circuit for generating a fold count responsive to a number of times the folding charge is applied to the input of the amplifier; and a controller coupled to the fold counter for generating a control signal responsive to the fold count for use in controlling at least one operating parameter of the data acquisition circuit.
Claim 18
Dependent Claim
35 words
The system of claim 15 , further comprising a residue quantizer for generating a residue signal responsive to a residue of an amplified pulse remaining at the amplifier output after application of the folding current.
Claim 19
Dependent Claim
30 words
The system of claim 16 , further comprising a low pass filter coupled between the amplifier output and the threshold detector and the residue quantizer for filtering the amplified pulses.
Claim 20
Dependent Claim
45 words
The system of claim 16 , wherein the controller is coupled to the residue quantizer and is further configured for generating the control signal responsive to the residual signal for use in controlling the at least one operating parameter of the adaptive data acquisition circuit.
Claim 21
Dependent Claim
109 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an operating parameter of the data acquisition circuit includes controlling a shaping time of a pulse shaper.
Claim 22
Dependent Claim
109 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an operating parameter of the data acquisition circuit includes controlling a shaping time of a pulse shaper.
Claim 23
Dependent Claim
19 words
The method of claim 19 , wherein controlling an operating parameter comprises controlling an amplification parameter of the amplifier.
Claim 24
Dependent Claim
31 words
The method of claim 19 , wherein controlling an amplification parameter of the amplifier comprises controlling a resistance of a feedback resistor of the amplifier and shorting of the feedback resistor.
Claim 25
Dependent Claim
25 words
The method of claim 19 , wherein controlling an amplification parameter of the amplifier comprises controlling a capacitance of a feedback capacitor of the amplifier.
Claim 26
Dependent Claim
37 words
The method of claim 19 , wherein when a level of the pulse parameter is relatively low, controlling a shaping time of the pulse shaper comprises controlling the pulse shaper to produce a relatively longer shaping time.
Claim 27
Dependent Claim
37 words
The method of claim 19 , wherein when a level of the pulse parameter is relatively high, controlling a shaping time of the pulse shaper comprises controlling the pulse shaper to produce a relatively shorter shaping time.
Claim 28
Dependent Claim
41 words
The method of claim 19 , wherein the imaging data acquisition circuit further comprises a discriminator receiving shaped pulses from the pulse shaper, wherein controlling an operating parameter of the data acquisition circuit comprises adjusting a discrimination threshold of the discriminator.
Claim 29
Dependent Claim
46 words
The method of claim 19 , wherein the imaging data acquisition circuit further comprises a switch between the detector and the amplifier, wherein controlling an operating parameter of the data acquisition circuit comprises operating the switch to selectively couple and decouple the amplifier from the detector.
Claim 30
Dependent Claim
16 words
The method of claim 19 , further comprising generating the control signal responsive to predictive information.
Claim 31
Dependent Claim
15 words
The method of claim 27 , wherein the predictive information comprises a predicted pulse parameter.
Claim 32
Dependent Claim
22 words
The method of claim 19 , further comprising generating a control signal responsive to a pulse rate count of amplified electrical pulses.
Claim 33
Dependent Claim
138 words
In an imaging data acquisition circuit comprising a detector generating current pulses responsive to energy incident at the detector, an amplifier receiving the electrical pulses from the detector at an amplifier input and generating amplified electrical pulses at an ampiifier output, and a folding circuit subtracting a charge from the amplifier input responsive to the amplified electrical pulses generated at the amplifier output, a method for acquiring imaging data comprising: counting a number of times a current is subtracted from an amplifier input during a pulse amplification period to generate a fold count; measuring a residue of an amplified pulse remaining at the amplifier output after subtracting the folding current; and generating a control signal responsive to the fold count and the measured residual signal for use in controlling an operating parameter of the imaging data acquisition circuit.
Claim 34
Dependent Claim
138 words
In an imaging data acquisition circuit comprising a detector generating current pulses responsive to energy incident at the detector, an amplifier receiving the electrical pulses from the detector at an amplifier input and generating amplified electrical pulses at an ampiifier output, and a folding circuit subtracting a charge from the amplifier input responsive to the amplified electrical pulses generated at the amplifier output, a method for acquiring imaging data comprising: counting a number of times a current is subtracted from an amplifier input during a pulse amplification period to generate a fold count; measuring a residue of an amplified pulse remaining at the amplifier output after subtracting the folding current; and generating a control signal responsive to the fold count and the measured residual signal for use in controlling an operating parameter of the imaging data acquisition circuit.
Claim 35
Dependent Claim
168 words
An adaptive data acquisition circuit comprising: an amplifier for amplifying electrical pulses generated by a detector responsive to energy incident at the detector, wherein the amplifier comprises a feedback resistor and reset switch, wherein the control signal is configured for controlling a resistance of the feedback resistor and a reset frequency of the amplifier by controlling an operation of the reset switch to selectively short the feedback resistor; a counting circuit for counting amplified electrical pulses generated by the amplifier; a digital logic circuit for determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses and for generating a control signal responsive to the pulse parameter for controlling an operating parameter of the data acquisition circuit, wherein the control signal is configured for controlling an amplification parameter of the amplifier; and a pulse shaper receiving the amplified electrical pulses and generating shaped pulses, wherein the control signal is configured for controlling a shaping time of the pulse shaper.
Claim 36
Dependent Claim
168 words
An adaptive data acquisition circuit comprising: an amplifier for amplifying electrical pulses generated by a detector responsive to energy incident at the detector, wherein the amplifier comprises a feedback resistor and reset switch, wherein the control signal is configured for controlling a resistance of the feedback resistor and a reset frequency of the amplifier by controlling an operation of the reset switch to selectively short the feedback resistor; a counting circuit for counting amplified electrical pulses generated by the amplifier; a digital logic circuit for determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses and for generating a control signal responsive to the pulse parameter for controlling an operating parameter of the data acquisition circuit, wherein the control signal is configured for controlling an amplification parameter of the amplifier; and a pulse shaper receiving the amplified electrical pulses and generating shaped pulses, wherein the control signal is configured for controlling a shaping time of the pulse shaper.
Claim 37
Dependent Claim
115 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an amplification parameter of the amplifier comprises controlling a resistance of a feedback resistor of the amplifier and shorting of the feedback resistor.
Claim 38
Dependent Claim
115 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an amplification parameter of the amplifier comprises controlling a resistance of a feedback resistor of the amplifier and shorting of the feedback resistor.
Claim 39
Dependent Claim
130 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, wherein the imaging data acquisition circuit further comprises a switch between the detector and the amplifier, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an operating parameter of the data acquisition circuit comprises operating the switch to selectively couple and decouple the amplifier from the detector.
Claim 40
Dependent Claim
130 words
In an imaging data acquisition circuit comprising a detector generating electrical pulses responsive to energy incident at the detector and an amplifier receiving the electrical pulses from the detector and generating amplified electrical pulses, wherein the imaging data acquisition circuit further comprises a switch between the detector and the amplifier, a method for acquiring imaging data comprising: counting amplified electrical pulses received from an amplifier of an imaging data acquisition circuit; determining a pulse parameter indicative of a pulse rate and an amount of energy present in the amplified electrical pulses; and controlling an operating parameter of the data acquisition circuit responsive to the pulse parameter, wherein controlling an operating parameter of the data acquisition circuit comprises operating the switch to selectively couple and decouple the amplifier from the detector.
References Cited (Backward Citations)
US4591984A
Cited
US4528450A
Cited
US4968898A
Cited
US5748134A
Cited
US6175323B1
Cited
US6498335B2
Cited
US6278395B1
Cited
US20010048383A1
Cited
US6366231B1
Cited
US20020093447A1
Cited
US20020196172A1
Cited
US6759658B2
Cited
US20030053587A1
Cited
US20040113678A1
Cited
US7095354B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2011-06-17 | 2011-12-17 | 2012-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-06-17 | 2015-12-17 | 2016-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-06-17 | 2019-12-17 | 2020-06-17 | $7700.00 | Window Closed / Lapsed |