Skip to main content
Fig. 6 | Radiation Oncology

Fig. 6

From: Helium ion beam imaging for image guided ion radiotherapy

Fig. 6

Evaluation of the spatial resolution of helium ion radiography for a measured radiograph depicting an air inhomogeneity 1 mm thick (in the beam direction) in an otherwise homogeneous PMMA phantom of 161 mm thickness. The inhomogeneity was positioned in the middle of the phantom, where the lowest theoretical resolution is expected. The panels a) to f) show the data after single data processing steps. Panel e) shows the radiograph after the complete data processing at the dose level of 1.44 mGy, while panel f) shows the image quality at the dose level of diagnostic X-ray radiographies (350 uGy). The pixel size is 220 μm × 220 μm

Back to article page