Radiology Key

Fig. 5.1 Definitions of target volumes This chapter introduces the automated segmentation approaches for the GTV, the basics of CTV-to-PTV margins, and computational determination of the CTV-to-PTV margin based on…

Fig. 10.1 Illustration of the applications of surface-imaging systems in radiation therapy in the estimation of (a) inter-fractional and (b) intra-fractional setup errors The main advantages of surface-imaging systems are…

Fig. 7.1 Dose distribution with passive scattering carbon-ion radiotherapy (CIRT) (upper panel) and IMRT (lower panel). Yellow arrows show beam fields (With permission from Tsujii et al. 2014) In this…

Fig. 9.1 IGRT workflow. Treatment planning CT; the structures and fiducial point of the treatment planning are included in a reference set of the image registration for in-room imaging. After…

Fig. 13.1 Characteristic of dose distributions in the depth direction in proton therapy and common X-ray therapy Fig. 13.2 Proton therapy system in National Cancer Center Hospital East Japan Proton…

(12.1) where r is the three-dimensional (3D) position vector, D is the dose, T is the total energy released per unit mass (TERMA), and K is the dose deposition kernel…

Fig. 6.1 Conceptual scheme of similar-case-based radiotherapy treatment planning 6.5 Similar-Case-Based Beam Angle Optimization The accuracy and efficiency of beam arrangement determinations could potentially be improved by combining similar-case-based treatment…

Fig. 2.1 Flowchart for a generic CADe scheme for detection of lesions in medical images 2.2.2 Enhancement of Lesions in CADe Among the steps in CADe schemes, thresholding-based methods such…