Table 3 Advantages and disadvantages of the sCT generators investigated in this study
From: Comparison of four synthetic CT generators for brain and prostate MR-only workflow in radiotherapy
Advantages | Disadvantages | Others | |
|---|---|---|---|
Syngo_BD | Brain: HU underestimation for the skull Brain: overall worst dosimetric results (Dmean ME and gamma analysis) Pelvis: unrealistic femur reconstruction (see [10]) Brain and pelvis: requires an additional registration between MR sequences | Pelvis: discrete HU values Brain: max 1000 HU on the sCT image | |
Spectronic | Pelvis: sCT generated from the delineation MR sequence Brain: overall smallest Dmean ME Brain and pelvis: overall best gamma analysis | Brain: requires an additional registration between MR sequences | Pelvis: the generator automatically fills the rectum to avoid taking into account unreproducible gas when preparing the treatment plan Brain: the generator does not generate a sCT if high density materials like dental appliance artefact the MR image |
Syngo_AI | Brain: overall smallest Dmean ME | Brain and pelvis: requires an additional registration between MR sequences | |
Therapanacea | Brain and pelvis: sCT generated from the delineation MR sequence | No CT calibration curve provided Pelvis: only sCT to overestimate the HU of the femoral heads |