292. Development of the CT scanner using radiation therapy megavoltage photon beam (megavoltage CT)
نویسندگان
چکیده
منابع مشابه
Peripheral dose from megavoltage cone‐beam CT imaging for nasopharyngeal carcinoma image‐guided radiation therapy
The growing use of cone-beam computed tomography (CBCT) for IGRT has increased concerns over the additional radiation dose to patients. The in-field dose of IGRT and the peripheral dose (PD) from kilovoltage CBCT (KV-CBCT) imaging have been well quantified. The purpose of this work is to evaluate the peripheral dose from megavoltage CBCT (MV-CBCT) imaging for nasopharyngeal carcinoma IGRT, to d...
متن کاملMegavoltage cone-beam CT: system description and clinical applications.
In this article, we describe a clinical mega-voltage cone-beam computed tomography (MV CBCT) system, present the image acquisition and patient setup procedure, discuss the positioning accuracy and image quality, and illustrate its potential use for image-guided radiation therapy (IGRT) through selected clinical examples. The MV CBCT system consists of a standard linear accelerator equipped with...
متن کاملMonte Carlo calculation of shielding properties of newly developed heavy concretes for megavoltage photon beam spectra used in radiation therapy
Introduction: Globally, the need for radiotherapy as a part of cancer management increases every year. Thus, the shielding for megavoltage radiotherapy rooms is of great importance. Materials and Methods: In the present study, 14 types of developed high-density concrete with densities ranging from 2.45 to 5.11 were simulated by using Monte Carlo method. The linear attenuation coefficient and t...
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Recommended Citation Chen, Mingqing. "Development of a diaphragm tracking algorithm for megavoltage cone beam CT projection data. ACKNOWLEDGMENTS First of all, I would like to express my sincere gratitude to my adviser Dr. Siochi. He has established the software framework and had the overall idea about the project before I came here. He guided me into the field of image guided radiation therapy...
متن کاملLow-dose megavoltage cone-beam CT imaging using thick, segmented scintillators.
Megavoltage, cone-beam computed tomography (MV CBCT) employing an electronic portal imaging device (EPID) is a highly promising technique for providing soft-tissue visualization in image-guided radiotherapy. However, current EPIDs based on active matrix flat-panel imagers (AMFPIs), which are regarded as the gold standard for portal imaging and referred to as conventional MV AMFPIs, require high...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1992
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003500688