Table 1 Comparison of PET/MRI and other conventional image-base modality in radiotherapy
| Â | CT | MRI | PET/CT | PET/MRI |
|---|---|---|---|---|
Radiotherapy planning | Fused with other images for target delineation Providing tissue electron density information directly for dose calculation | Fused with other images for target delineation Co-registration with CT images or synthesis of pseudo-CT images for dose calculation | BTV provided by PET assist in GTV delineation Providing tissue electron density information directly for dose calculation | BTV provided by PET assist in GTV delineation Co-registration with CT images or synthesis of pseudo-CT images for dose calculation |
Treatment evaluation | Assessing the treatment effect from tumor morphology Not available for pregnant women or children | Assessing the treatment effect from tumor morphology and parameter changes Not available for patients with metal implants, ferromagnetic objects | Assessing the treatment effect from anatomical and functional information Not available for pregnant women or children | Assessing the treatment effect from anatomical, functional information and parameter changes Not available for patients with metal implants, ferromagnetic objects |
Patient surveillance | Having ionizing radiation Acquisition quickly | No-ionizing radiation Long acquisition | Having ionizing radiation Long acquisition | No-ionizing radiation Long acquisition |