Výsledky vyhledávání - "T. K. Lewellen"

Carbon-11-thymidine and FDG to measure therapy response

Autor: A F, Shields, D A, Mankoff, J M, Link, M M, Graham, J F, Eary, S M, Kozawa, M, Zheng, B, Lewellen, T K, Lewellen, J R, Grierson, K A, Krohn

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 39(10)

This study was performed to determine if PET imaging with 11C-thymidine could measure tumor response to chemotherapy early after the initiation of treatment. Imaging of deoxyriboneucleic acid biosynthesis, quantitated with 11C-thymidine, was compared

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::01aa8295a62190af09016db548a17492
https://pubmed.ncbi.nlm.nih.gov/9776283

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Energy-based scatter corrections for scintillation camera images of iodine-131

Autor: K R, Pollard, T K, Lewellen, M S, Kaplan, D R, Haynor, R S, Miyaoka, J F, Eary, L D, Durack

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 37(12)

The use of high-dose 131I antibody therapy requires accurate measurement of normal tissue uptake to optimize the therapeutic dose. One of the factors limiting the accuracy of such measurements is scatter and collimator septal penetration. This study

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::384238d5f4f2c5ca7f63801033810491
https://pubmed.ncbi.nlm.nih.gov/8970529

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Noninvasive detection of hypoxic myocardium using fluorine-18-fluoromisonidazole and positron emission tomography

Autor: G V, Martin, J H, Caldwell, M M, Graham, J R, Grierson, K, Kroll, M J, Cowan, T K, Lewellen, J S, Rasey, J J, Casciari, K A, Krohn

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 33(12)

Fluoromisonidazole (FMISO) is metabolically trapped in viable cells as a function of reduced cellular pO2. Therefore [18F]-FMISO is potentially useful for evaluating patients with hypoxic but viable myocardium. The goal of this study was to investiga

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2918510ead5ea06364166a4ac6bc0d93
https://pubmed.ncbi.nlm.nih.gov/1460516

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A method for imaging therapeutic doses of iodine-131 with a clinical gamma camera

Autor: K R, Pollard, A N, Bice, J F, Eary, L D, Durack, T K, Lewellen

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 33(5)

Imaging therapeutic doses of 131I-labeled monoclonal antibody would provide valuable biodistribution data for dosimetry, but gamma cameras are unable to accurately handle the corresponding high counting rate. To image patients undergoing radioimmunot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::c670adecc118bcfeca0b4c77c5ef9cad
https://pubmed.ncbi.nlm.nih.gov/1569489

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Performance standards in positron emission tomography

Autor: J S, Karp, M E, Daube-Witherspoon, E J, Hoffman, T K, Lewellen, J M, Links, W H, Wong, R D, Hichwa, M E, Casey, J G, Colsher, R E, Hitchens

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 32(12)

A standard set of performance measurements is proposed for use with positron emission tomographs. This set of measurements has been developed jointly by the Computer and Instrumentation Council of the Society of Nuclear Medicine and the National Elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0f01376ad582b187e498852ddcfca142
https://pubmed.ncbi.nlm.nih.gov/1613593

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The use of importance sampling techniques to improve the efficiency of photon tracking in emission tomography simulations

Autor: D R, Haynor, R L, Harrison, T K, Lewellen

Publikováno v: Medical physics. 18(5)

Monte Carlo simulations are widely used to study the transmission and scattering of gamma rays. Use of this method for simulations of emission tomographs suffers from geometric inefficiency resulting from the low solid angle of acceptance of most tom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::1ed323819cb7c8fb6e566229aa7dd40b
https://pubmed.ncbi.nlm.nih.gov/1961165

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