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- W2045403917 abstract "Purpose: To investigate whether early-assessed radioresponse of tumors corresponds with late-assessed radioresponse, which is associated with local disease control in radiotherapy (RT) for cervical cancer. Methods and Materials: This prospective study included 12 patients with cervical squamous cell carcinoma treated by RT with or without concurrent cisplatin. Tumor volume was estimated by scheduled magnetic resonance imaging before (preRT), 3 to 4 weeks after (early assessment), and 6 to 7 weeks after (late assessment) RT initiation. Radioresponse was assessed with tumor shrinkage curves based on these volumes. Radioresponse for each tumor was calculated as the slope (day−1) of the shrinkage curve by fitting to an exponential equation. Results: Early-assessed radioresponse ranged from 0.001 to 0.106 day−1 (median, 0.021 day−1) and late-assessed radioresponse from 0.009 to 0.091 day−1 (median, 0.021 day−1), with no significant difference between them (p = 0.1191). The early-assessed radioresponse correlated with the late-assessed radioresponse (R2 = 0.714, p = 0.0005). Conclusions: Correspondence between early- and late-assessed radioresponse in a series of tumors showing a wide range of radioresponse was not particularly close overall. However, early assessment of radioresponsiveness did seem to be useful for characterizing those tumors with high or low radioresponsiveness. Purpose: To investigate whether early-assessed radioresponse of tumors corresponds with late-assessed radioresponse, which is associated with local disease control in radiotherapy (RT) for cervical cancer. Methods and Materials: This prospective study included 12 patients with cervical squamous cell carcinoma treated by RT with or without concurrent cisplatin. Tumor volume was estimated by scheduled magnetic resonance imaging before (preRT), 3 to 4 weeks after (early assessment), and 6 to 7 weeks after (late assessment) RT initiation. Radioresponse was assessed with tumor shrinkage curves based on these volumes. Radioresponse for each tumor was calculated as the slope (day−1) of the shrinkage curve by fitting to an exponential equation. Results: Early-assessed radioresponse ranged from 0.001 to 0.106 day−1 (median, 0.021 day−1) and late-assessed radioresponse from 0.009 to 0.091 day−1 (median, 0.021 day−1), with no significant difference between them (p = 0.1191). The early-assessed radioresponse correlated with the late-assessed radioresponse (R2 = 0.714, p = 0.0005). Conclusions: Correspondence between early- and late-assessed radioresponse in a series of tumors showing a wide range of radioresponse was not particularly close overall. However, early assessment of radioresponsiveness did seem to be useful for characterizing those tumors with high or low radioresponsiveness." @default.
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- W2045403917 date "2006-03-01" @default.
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- W2045403917 title "Early determination of uterine cervical squamous cell carcinoma radioresponse identifies high- and low-response tumors" @default.
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- W2045403917 doi "https://doi.org/10.1016/j.ijrobp.2005.09.022" @default.
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