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Spatially resolved regression analysis of pre-treatment FDG, FLT and Cu-ATSM PET from post-treatment FDG PET : An exploratory studyBowen, Stephen R. ...Materials and methods Ten canine sinonasal cancer patients underwent PET/CT scans of [18F]FDG (FDGpre), [18F]FLT (FLTpre), and [61Cu]Cu-ATSM (Cu-ATSMpre). Following radiotherapy regimens of 50 Gy in ... 10 fractions, veterinary patients underwent FDG PET/CT scans at 3 months (FDGpost). Regression of standardized uptake values in baseline FDGpre, FLTpre and Cu-ATSMpre tumour voxels to those in FDGpost images was performed for linear, log-linear, generalized-linear and mixed-fit linear models. Goodness-of-fit in regression coefficients was assessed by R2. Hypothesis testing of coefficients over the patient population was performed. Results Multivariate linear model fits of FDGpre to FDGpost were significantly positive over the population (FDGpost 0.17FDGpre, p = 0.03), and classified slopes of RECIST non-responders and responders to be different (0.37 vs. 0.07, p = 0.01). Generalized-linear model fits related FDGpre to FDGpost by a linear power law (FDGpostFDGpre0.93,p<0.001). Univariate mixture model fits of FDGpre improved R2 from 0.17 to 0.52. Neither baseline FLT PET nor Cu-ATSM PET uptake contributed statistically significant multivariate regression coefficients. Conclusions Spatially resolved regression analysis indicates that pre-treatment FDG PET uptake is most strongly associated with three-month post-treatment FDG PET uptake in this patient population, though associations are histopathology-dependent.Source: Radiotherapy and oncology. - ISSN 0167-8140 (No. 1, Vol. 105, 2012, str. 41-48)Type of material - article, component partPublish date - 2012Language - englishCOBISS.SI-ID - 26679847
Author
Bowen, Stephen R. |
Chappell, R. J. |
Bentzen, S. |
Deveau, M. |
Forrest, Lisa J. |
Jeraj, Robert
Topics
onkologija |
radioterapija |
obsevanje
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Database name | Field | Year |
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Bowen, Stephen R. | ![]() |
Chappell, R. J. | ![]() |
Bentzen, S. | ![]() |
Deveau, M. | ![]() |
Forrest, Lisa J. | ![]() |
Jeraj, Robert | 15737 |
Source: Personal bibliographies
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