Apparatus and associated methodology for improving timing...

Details Apparatus and associated methodology for improving timing... Apparatus and associated methodology for improving timing...

2009-12-29

2011-12-20

Porta, David (Department: 2884)

Radiant energy

Calibration or standardization methods

Reexamination Certificate

active

08080780

ABSTRACT:
An apparatus and associated method for gamma ray detection that improves the timing resolution is provided. A crystal of interaction in a scintillation crystal array emits scintillation light in response to interaction with a gamma ray. The scintillation light is detected by one or more photomultiplier tubes. Each photomultiplier tube that detects the scintillation light detects the light at a different time. The apparatus determines the location of the gamma ray interaction and uses the location of the interaction to generate correction times for each waveform generated by the photomultiplier tubes. The waveforms are corrected with the correction timings and combined to extract a time of arrival estimate for the gamma ray. Noise thresholding is also used to select waveforms having low noise for combination to extract the time of arrival estimate.

REFERENCES:
patent: 7342231 (2008-03-01), Warburton et al.
patent: 2010/0084560 (2010-04-01), Aykac et al.
Petrick et al., “Least squares arrival time estimators for photons detected using a photomultiplier tube,” 1991, IEEE Nuclear Science Symposium and Medical Imaing Conference, vol. 1, pp. 201-204.
J.-D. Leroux et al., Time Determination of BGO-APD Detectors by Digital Signal Processing for Positron Emission Tomography, 2004 IEEE, pp. 1723-1727.
R. I. Wiener et al., “An Investigation of Waveform Sampling for Improved Signal Processing in TOF PET”, Nov. 14, 2008, IEEE, 5 pages.
H. Kim et al., “A multi-threshold sampling method for TOF-PET signal processing”, Jan. 2009, Nucl. Instr. and Meth. A (2009) 4 pages.
W.W. Moses, “Time of Flight in PET Revisited”, IEEE Transaction on Nuclear Science, vol. 50, No. 5, Oct. 2003, pp. 1325-1330.
Michael D. Haselman et al., “Simulation of Algorithms for Pulse Timing in FPGAs”, IEEE Nucl Sci Symp Conf Rec (1997). 2007, pp. 1-14.
Abdelkader Bousselham et al., “Sampling Pulses for Optimal Timing”, IEEE Transactions on Nuclear Science, vol. 54, No. 2, Apr. 2007, pp. 320-326.
Peter D. Olcott et al., “A high speed fully digital data acquisition system for Positron Emission Tomography”, 2006 IEEE Nuclear Science Symposium Conference Record, pp. 1909-1911.
Suleman Surti et al., “Performance of Philips Gemini TF PET/CT Scanner with Special Consideration for Its Time-of-Flight Imaging Capabilities”, J Nucl Med 2007, pp. 471-480.
P. Stenström, et al. “A New Scalable Modular Data Acquisition System for SPECT (PET)” IEEE Transactions on Nuclear Science, vol. 45, No. 3, Jun. 1998, pp. 1117-1121.

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