| Diffusion-Weighted MRI Versus 18F-FDG PET/CT: Performance as Predictors of Tumor Treatment Response and Patient Survival in Patients With Non-Small Cell Lung Cancer Receiving Chemoradiotherapy. | |
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MedLine Citation:
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PMID: 22194481 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to compare the predictive capabilities of diffusion-weighted MRI (DWI) and (18)F-FDG PET/CT for tumor response to therapy and survival in patients with non-small cell lung cancer (NSCLC) receiving chemoradiotherapy. SUBJECTS AND METHODS: The study included 64 patients with NSCLC diagnosed as stage III who underwent pretherapeutic DWI and FDG PET/CT and were treated with chemoradiotherapy. For quantitative prediction, apparent diffusion coefficient (ADC) for DWI and maximum standardized uptake value (SUV(max)) for PET/CT were measured at all targeted lesions and averaged to obtain final values for each patient. To evaluate the predictive capability of either index for distinguishing partial response and nonresponse (stable or progressive disease) groups, receiver operating characteristic analysis was performed, and sensitivity, specificity, and accuracy of the two modalities were compared using the McNemar test. Finally, overall and progression-free survival curves divided by the corresponding threshold value were compared by means of the log-rank test. RESULTS: The area under the curve (A(z)) for ADC (A(z) = 0.84) was significantly larger than that for SUV(max) (A(z) = 0.64, p < 0.05). The application of feasible threshold values resulted in specificity (44.4%) and accuracy (76.6%) of DWI becoming significantly higher than those of PET/CT (specificity, 11.1%; p < 0.05 and accuracy, 67.2%, p < 0.05). In addition, only overall survival and progression-free survival of the two groups divided by ADC at 2.1 × 10(-3) mm(2)/s and SUV(max) at 10 showed a significant difference (p < 0.05). CONCLUSION: DWI may have better potential than FDG PET/CT for prediction of tumor response to therapy in NSCLC patients before chemoradiotherapy. |
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Authors:
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Yoshiharu Ohno; Hisanobu Koyama; Takeshi Yoshikawa; Keiko Matsumoto; Nobukazu Aoyama; Yumiko Onishi; Kazuro Sugimura |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 198 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2011-12-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 75-82 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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