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Figure 1: Photograph of CIRS intensity-modulated radiation therapy thorax phantom and the removable dosimetry insert: (a) CIRS intensity-modulated radiation therapy thorax phantom, (b) insert for air ionization chamber available from CIRS, and (c) fabricated insert for liquid ionization chamber

Figure 1: Photograph of CIRS intensity-modulated radiation therapy thorax phantom and the removable dosimetry insert: (a) CIRS intensity-modulated radiation therapy thorax phantom, (b) insert for air ionization chamber available from CIRS, and (c) fabricated insert for liquid ionization chamber