Article 2 clinical article 2 human 2 image reconstruction 2 selective internal radiation therapy 2 single photon emission computed tomography 2 yttrium 90 Activity concentration 1 Austria 1 Bremsstrahlung imaging 1 Dosimetry 1 Humans 1 Kernel method 1 Liver phantom 1 Metrological quality 1 Monte Carlo Method 1 Monte Carlo method 1 Phantoms, Imaging 1 Reproducibility of Results 1 SIRT 1 SPECT quantification 1 SPECT-CT 1 Synergistic image reconstruction 1 Tomographic image reconstruction 1 Tomography, Emission-Computed, Single-Photon 1 Tomography, X-Ray Computed 1 adult 1 brems radiation 1 contrast to noise ratio 1 controlled study 1