A computerized framework for monitoring four-dimensional dose distributions during stereotactic body radiation therapy using a portal dose image-based 2D/3D registration approach

The aim of radiation therapy is to reduce the dose as low as possible to surrounding normal tissues, while concentrating the dose administered to target tumors. High-precision radiation therapies, such as stereotactic body radiation therapy (SBRT), have been employed to achieve this purpose. SBRT has several unique features, such as the delivery of large doses for small irradiation fields within several fractions (e.g. 48Gy/4 fractions), and the use of seven to eight beam directions, including coplanar and non-coplanar beam arrangements for localized small tumors in the lung or liver [1].
Source: Computerized Medical Imaging and Graphics - Category: Radiology Authors: Source Type: research