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Fig. 3 | Radiation Oncology

Fig. 3

From: Development of a PMMA phantom as a practical alternative for quality control of gamma knife® dosimetry

Fig. 3

Reconstructed coronal computed tomography images of the PMMA phantom with different inner phantoms. In each figure, the crossing point of the dashed lines is the PPS calibration center of a GK. a The effective point of the PTW TN31010 ionization chamber is 0.2 mm off in the x-direction (right-left). b The xy-plane film position is well matched with the xy-plane. c The xz-plane film position is well matched with the xz-plane

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Radiation Oncology

ISSN: 1748-717X

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