Search Results - "Wells, R Glenn"

Dose reduction is good but it is image quality that matters by Wells, R. Glenn

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Measuring SPECT myocardial blood flow at the University of Ottawa Heart Institute by Wells, R. Glenn, Marvin, Brian

“…The introduction of new cardiac SPECT cameras has made it practical to do dynamic SPECT imaging and opened the door to performing myocardial blood flow (MBF)…”
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Single Photon Emission Computed Tomography (SPECT) Myocardial Perfusion Imaging Guidelines: Instrumentation, Acquisition, Processing, and Interpretation by Dorbala, Sharmila, Ananthasubramaniam, Karthik, Armstrong, Ian S., Chareonthaitawee, Panithaya, DePuey, E. Gordon, Einstein, Andrew J., Gropler, Robert J., Holly, Thomas A., Mahmarian, John J., Park, Mi-Ae, Polk, Donna M., Russell, Raymond, Slomka, Piotr J., Thompson, Randall C., Wells, R. Glenn

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Dynamic phantoms: Making the right tool for the job by Wells, R. Glenn, Klein, Ran

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Dynamic SPECT measurement of absolute myocardial blood flow in a porcine model by Wells, R Glenn, Timmins, Rachel, Klein, Ran, Lockwood, Julia, Marvin, Brian, deKemp, Robert A, Wei, Lihui, Ruddy, Terrence D

“…Absolute myocardial blood flow (MBF) and myocardial flow reserve (MFR) provide incremental diagnostic and prognostic information over relative perfusion alone…”
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Cardiac myocardial perfusion imaging with new SPECT cameras: Comparing apples and oranges by Wells, R. Glenn, Ruddy, Terrence D.

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Reduced acquisition times for measurement of myocardial blood flow with 99mTc-tetrofosmin and solid-state detector SPECT by Do, Jeffrey, Ruddy, Terrence D., Wells, R. Glenn

“…Measurement of myocardial blood flow (MBF) is feasible using SPECT imaging but the acquisition requires more time than usual. Our study assessed the impact of…”
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Noise heterogeneity in attenuation-corrected cardiac SPECT images increases perfusion value uncertainty near the base of the heart by Cuddy-Walsh, Sarah G., Wells, R. Glenn

“…Dedicated cardiac SPECT cameras which employ multi-pinhole detectors have variable photon sensitivity within the camera’s field-of-view such that a lower…”
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Exponential dosing to standardize myocardial perfusion image quality with rubidium-82 PET by Tavoosi, Anahita, Khetarpal, Ritika, Wells, R. Glenn, Beanlands, Rob S.B., deKemp, Robert A.

“…82Rb PET is commonly performed using the same injected activity in all patients, resulting in lower image quality in larger patients. This study compared 82Rb…”
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Patient-specific SPECT imaging protocols to standardize image noise by Cuddy-Walsh, Sarah G., Clackdoyle, Duncan C., Renaud, Jennifer M., Wells, R. Glenn

“…In addition to acquired photon counts, image noise depends on the image reconstruction algorithm. This work develops patient-specific activity or acquisition…”
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Scatter correction improves concordance in SPECT MPI with a dedicated cardiac SPECT solid-state camera by Pourmoghaddas, Amir, Vanderwerf, Karen, Ruddy, Terrence D., Glenn Wells, R.

“…Correction for photon attenuation and scatter improves image quality with conventional NaI-based gamma cameras but evaluation of these corrections for novel…”
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A modified TEW approach to scatter correction for In-111 and Tc-99m dual-isotope small-animal SPECT by Prior, Paul, Timmins, Rachel, Petryk, Julia, Strydhorst, Jared, Duan, Yin, Wei, Lihui, Glenn Wells, R.

“…Purpose: In dual-isotope (Tc-99m/In-111) small-animal single-photon emission computed tomography (SPECT), quantitative accuracy of Tc-99m activity measurements…”
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Correction to: Patient-specific SPECT imaging protocols to standardize image noise by Cuddy-Walsh, Sarah G., Clackdoyle, Duncan C., Renaud, Jennifer M., Wells, R. Glenn

“…The originally published version of this article contained typographical errors in the units of photon sensitivity. The units of counts · MBq-1 · min-1 and…”
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New SPECT and PET Radiopharmaceuticals for Imaging Cardiovascular Disease by Pelletier-Galarneau, Matthieu, Sogbein, Oyebola O., Schindler, Thomas H., Wei, Lihui, Wells, R. Glenn, Ruddy, Terrence D.

“…Nuclear cardiology has experienced exponential growth within the past four decades with converging capacity to diagnose and influence management of a variety…”
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Adopting new gamma cameras and reconstruction algorithms: Do we need to re-establish normal reference values? by Miao, Timothy L., Kansal, Vinay, Glenn Wells, R., Ali, Iftikhar, Ruddy, Terrence D., Chow, Benjamin J.W.

“…The impact of adopting new single photon emission computed tomography (SPECT) cameras and new reconstruction algorithms on left ventricular (LV) volumes has…”
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Effects of CT‐based attenuation correction of rat microSPECT images on relative myocardial perfusion and quantitative tracer uptake by Strydhorst, Jared H., Ruddy, Terrence D., Wells, R. Glenn

“…Purpose: Our goal in this work was to investigate the impact of CT‐based attenuation correction on measurements of rat myocardial perfusion with 99mTc and…”
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Quantification of Myocardial Blood Flow with CZT SPECT Imaging: Is It Ready for Clinical Use? by Erthal, Fernanda, Lima, Ronaldo, Glenn Wells, R, Ruddy, Terrence D.

“…Purpose of Review Myocardial blood flow (MBF) quantification with positron emission tomography (PET) is well validated and has established diagnostic and…”
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Respiratory motion resulting in a pseudo-ischemia pattern on stress PET–CT imaging by Arasaratnam, Punitha, Al-Zahrani, Atif, Glenn Wells, R., Beanlands, Rob S.B., deKemp, Robert A.

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Feasibility of attenuation map alignment in pinhole cardiac SPECT using exponential data consistency conditions by Wells, R Glenn, Clackdoyle, Rolf

“…Purpose Dedicated cardiac SPECT systems do not typically include an integrated CT scanner and thus attenuation correction requires registration of separately…”
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Optimization of SPECT Measurement of Myocardial Blood Flow with Corrections for Attenuation, Motion, and Blood Binding Compared with PET by Wells, R Glenn, Marvin, Brian, Poirier, Marlie, Renaud, Jennifer, deKemp, Robert A, Ruddy, Terrence D

“…Myocardial blood flow (MBF) and myocardial flow reserve (MFR) measured with PET have clinical value. SPECT cameras with solid-state detectors can obtain…”
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