Figure 2 | Scientific Reports

Figure 2

From: Patient positioning during pediatric cardiothoracic computed tomography using a high-resilience pad system and pre-scan measurement of chest thickness

Figure 2

Definition of patient isocenter. (a) Axial image binarized with the CT value threshold to extract the patient isocenter, defined as the middle point (yellow dotted line) between the highest and lowest point (white dotted lines) of the extracted skin surface. All images were reconstructed so that the center of the image coincides with the isocenter of the gantry (blue cross). (b) Sagittal image showing the grand truth vertical center of patients, calculated using the averaged center values of each image along the scan length (yellow line). The patient was positioned below the isocenter of the gantry (blue line).

Back to article page