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KMID : 1038720150260040229
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Progress in Medical Physics
2015 Volume.26 No. 4 p.229 ~ p.233
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Response Evaluation after Stereotactic Ablative Radiotherapy for Lung Cancer
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Choi Ji-Hoon
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Abstract
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We retrospectively reviewed lung cancer patients who were treated with stereotactic ablative radiotherapy (SABR). We investigated the value of response evaluation after treatment by measuring the volume change of tumors on serial chest computed tomography (CT) examinations. The study included 11 consecutive patients with early-stage (T1-T2aN0M0) non-small cell lung cancer (NSCLC) who were treated with SABR. The median dose of SABR was 6,000 cGy (range 5,000~6,400) in five fractions. Sequential follow-up was performed with chest CT scans. Median follow-up time was 28 months. Radiologic measurement was performed on 51 CT scans with a median of 3 CT scans per patient. The median time to partial response (TPR) was 3 months and median time to complete remission (TCR) was 5 months. Overall response rate was 90.9% (10/11). Five patients had complete remission, five had partial response, and one patient developed progressive disease without response. On follow-up, three patients (27.2%) developed progressive disease after treatment. We evaluated the the response after SABR. Our data also showed the timing of response after SABR.
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KEYWORD
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Lung cancer, Stereotactic ablative radiotherapy, SABR, SBRT
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