Search Results - "Hasegawa, B.H."

Evaluation of a EMCCD Detector for Emission-Transmission Computed Tomography by Teo, B.K., Shestakova, I., Sun, M., Barber, W.C., Nagarkar, V.V., Hasegawa, B.H.

“…A prototype electron multiplying charged coupled device (EMCCD) based gamma camera is evaluated for emission-transmission computed tomography. The detector has…”
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Investigation of a continuous crystal PSAPD-based gamma camera by Despres, P., Barber, W.C., Funk, T., McClish, M., Shah, K.S., Hasegawa, B.H.

“…Position-sensitive avalanche photodiodes (PSAPDs) have recently been proposed as optical light detectors in scintillation based gamma cameras. They are compact…”
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Simulation and Validation of Point Spread Functions in Pinhole SPECT Imaging by Funk, T., Kirch, D.L., Mingshan Sun, Izaguirre, E.W., Koss, J.E., Prevrhal, S., Hasegawa, B.H.

“…Modeling and assessment of point spread functions (PSFs) of pinhole collimators is essential for the design of small animal single photon emission computed…”
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Attenuation correction of SPECT using X-ray CT on an emission-transmission CT system: myocardial perfusion assessment by Blankespoor, S.C., Xu, X., Kaiki, K., Brown, J.K., Tang, H.R., Cann, C.E., Hasegawa, B.H.

“…The authors present experimental results for attenuation correction of emission tomography through use of an attenuation map derived from X-ray CT data. The…”
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ECG-gated pinhole SPECT in mice with millimeter spatial resolution by Wu, M.C., Tang, H.R., Gao, D.W., Ido, A., O'Connell, J.W., Hasegawa, B.H., Dae, M.W.

“…The authors have developed a single photon emission computed tomography (SPECT) technique for high resolution radiotracer imaging of mice where the object is…”
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Improved prostate cancer imaging with SPECT/CT and MRI/MRSI by Youngho Seo, Kurhanewicz, J., Franc, B.L., Hawkins, R.A., Hasegawa, B.H.

“…We propose a combined imaging technique for prostate cancer using /sup 111/In-ProstaScint SPECT/CT and MRI/MRSI. When used alone, either SPECT/CT or MRI/MRSI…”
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Investigation of the use of X-ray CT images for attenuation compensation in SPECT by LaCroix, K.J., Tsui, B.M.W., Hasegawa, B.H., Brown, J.K.

“…This study investigates the general use of single-beam X-ray computed tomography (CT) images for generating attenuation maps for compensation of photon…”
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Absolute in vivo quantitation of myocardial activity by Da Silva, A.J., Tang, H.R., Wong, K.H., Wu, M.C., Dae, M.W., Hasegawa, B.H.

“…Quantitation of myocardial SPECT images corrected for attenuation underestimates the true radionuclide content due to partial volume errors. To measure…”
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1.07 by Funk, T., Aparici, C. Mari, Hasegawa, B.H.

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1.07: Advances in Multipinhole Cardiac SPECT by Funk, T., Aparici, C. Mari, Hasegawa, B.H.

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Attenuation correction of small animal SPECT images acquired with 125I-iodorotenone by Hwang, A.B, Taylor, C.C, VanBrocklin, H.F, Dae, M.W, Hasegawa, B.H

“…A uniform phantom (3.8 cm diameter) imaged without attenuation correction has a decrease in image intensity at its center of approximately 25%, but…”
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Attenuation correction of small animal SPECT images acquired with /sup 125/I-iodorotenone by Hwang, A.B., Taylor, C.C., VanBrocklin, H.F., Dae, M.W., Hasegawa, B.H.

“…Iodine-125 is an inexpensive and widely available radioisotope that is used frequently in biological experiments. It is also possible to perform small animal…”
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2.12: Initial performance evaluation of an ultra-fast cardiac SPECT camera — a phantom study by Volokh, L., Lahat, C., Beilin, L., Hugg, J., Blevis, I., Jansen, F.P., Shai, E., Hasegawa, B.H.

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Modeling and Correction of Spatial Distortion in Position-Sensitive Avalanche Photodiodes by Despres, P., Barber, W.C., Funk, T., McClish, M., Shah, K.S., Hasegawa, B.H.

“…Position-sensitive avalanche photodiodes (PSAPDs) are a promising alternative to photomultiplier tubes for the development of a new generation of gamma…”
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Feasibility study of multipinhole collimators for high resolution small animal imaging by Izaguirre, E.W., Mingshan Sun, Carver, J., Hasegawa, B.H.

“…Multipinhole SPECT has the potential to overcome the inherent low efficiency of single pinhole gamma cameras typically used in small animal radionuclide…”
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Numerical simulation of pixellated CdZnTe detector for medical radionuclide imaging application by Iwata, K., Hasegawa, B.H.

“…The recent development of CdZnTe detectors has made it possible to produce CdZnTe based clinical radionuclide imagers. We therefore investigate the pixellation…”
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Comparison of Position-Sensitive versus Discrete Avalanche Photodiodes in a Continuous Crystal Gamma Camera by Despres, P., Funk, T., Barber, W.C., Shah, K.S., Hasegawa, B.H.

“…Position-sensitive avalanche photodiodes (PSAPDs) have been proposed as an alternative to photomultiplier tubes (PMTs) for nuclear medicine applications. These…”
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Reducing the Distortion in Resistive Layer Positioning Devices: A Simulation Study by Despres, P., Funk, T., Barber, W.C., Shah, K.S., Hasegawa, B.H.

“…Position sensing in some radiation detectors can be achieved by using a resistive layer to divide the charge between multiple readout elements. This was…”
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Implementation of a combined X-ray CT-scintillation camera imaging system for localizing and measuring radionuclide uptake: experiments in phantoms and patients by Tang, H.R., Brown, J.K., Da Silva, A.J., Matthay, K.K., Price, D.C., Huberty, J.P., Hawkins, R.A., Hasegawa, B.H.

“…We have developed and demonstrated an imaging system that couples an X-ray CT scanner to a scintillation camera for the localization and absolute measurement…”
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Evaluation of a EMCCD detector for emission-transmission computed tomography by Teo, B.K., Shestakova, I., Sun, M., Barber, W.C., Hasegawa, B.H., Nagarkar, V.V.

“…A prototype electron multiplying charged coupled device (EMCCD) based gamma camera is evaluated for emission-transmission computed tomography. The detector has…”
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