By J. Daniel Bourland
Image-Guided Radiation Therapy offers key image-guided radiation therapy (IGRT) applied sciences for exterior beam radiotherapy. The ebook explores the decades-long technological advancements that experience happened within the realm of image-guided conformal, custom-made radiation remedy.
Expert authors, all of whom have actively participated within the improvement or implementation of IGRT, imaging, and allowing applied sciences, percentage their first-hand stories at the technological know-how, scientific makes use of, and effect of those applied sciences. They describe kilovoltage and megavoltage imaging in addition to radiological, ultrasound, and optical applied sciences for opting for and validating goal and sufferer positioning. The ebook examines how anatomical and organic imaging utilizing CT and puppy has contributed to the certainty of goal quantity obstacles and organic habit. It additionally explores such ideas as 4D PET/CT and electronic tomosynthesis.
Advancing sufferer care, this publication specializes in a wealth of hybrid IGRT applied sciences and units for coupled imaging and therapy contained in the radiation consultation room. It completely covers the modalities, software program instruments, and imaging therapy geometries that represent IGRT.
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Extra resources for Image-Guided Radiation Therapy
9). These contours are used to determine patient repositioning parameters. Within this context, one must consider that the target and OARs are typically contoured for the purpose of dosimetric treatment planning. Asymmetric planning target volume (PTV) margins are often applied around the clinical target volume (CTV) to yield rectal or bladder sparing. For example, the posterior PTV margin surrounding the prostate CTV is often 3 mm, whereas the PTV margin in the other directions is 5–10 mm. , closer to the posterior contour boundary).
Tome, Quality assurance of ultrasoundguided radiotherapy: AAPM Task Group 154, Med Phys 38(2), 857–871 (2011). T. S. Berrang, P. T. Truong, C. Popescu, L. Drever, H. A. Kader, M. L. Hilts, T. Mitchell, S. Y. Soh, L. Sands, S. Silver, and I. A. Olivotto, 3D ultrasound can contribute to planning CT to define the target for partial breast radiotherapy, Int J Radiat Oncol Biol Phys 73, 375–83 (2009). R. P. Petersen, P. T. Truong, H. A. Kader, E. Berthelet, J. C. Lee, M. L. Hilts, A. S. Kader, W. A.
The complex anatomy within the region requires users with specific confidence in abdominal US. However, CT-derived contours that are presented during the US guidance process can aid in structure recognition. Mechanistically, the procedures for abdominal US image guidance do not vary significantly from those used for prostate localization. The process includes initial CT simulation and contouring of the target, avoidance, and matching structures. These structures are exported to the US guidance system and used for daily alignment.