期刊
CLINICAL IMAGING
卷 47, 期 -, 页码 9-13出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.clinimag.2017.08.003
关键词
Osteosarcoma; Ewing sarcoma; Bone tumor; Quantitative diffusion-weighted imaging; Chemotherapy response; Magnetic resonance imaging
Objective: Assessment of tumor response to chemotherapy is essential in managing malignant pediatric bone tumors prior to resection. Subjects and methods: Pre-chemotherapy and post-chemotherapy osteosarcoma and Ewing sarcoma cases (n = 18) were analyzed with apparent diffusion coefficient (ADC) values measured by two readers. Results: Treated tumors demonstrated significantly greater ADC values compared to untreated tumors (p < 0.001). Intraclass correlation coefficients ranged between 0.858 and 0.935. No significant tumor volume differences were observed. Regression analysis demonstrated average ADC as the best predictor of treatment. Conclusions: Our study suggests that ADC values may be useful for evaluating chemotherapeutic response of malignant pediatric bone tumors. (C) 2017 Elsevier Inc. All rights reserved.
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