EP-1511: Radiation Dose from Megavoltage Cone Beam Computed Tomography for IGRT
نویسندگان
چکیده
منابع مشابه
Imaging dose from cone beam computed tomography in radiation therapy.
Imaging dose in radiation therapy has traditionally been ignored due to its low magnitude and frequency in comparison to therapeutic dose used to treat patients. The advent of modern, volumetric, imaging modalities, often as an integral part of linear accelerators, has facilitated the implementation of image-guided radiation therapy (IGRT), which is often accomplished by daily imaging of patien...
متن کاملPatient radiation dose and protection from cone-beam computed tomography
After over one decade development, cone beam computed tomography (CBCT) has been widely accepted for clinical application in almost every field of dentistry. Meanwhile, the radiation dose of CBCT to patient has also caused broad concern. According to the literature, the effective radiation doses of CBCTs in nowadays market fall into a considerably wide range that is from 19 µSv to 1073 µSv and ...
متن کاملCone beam computed tomography radiation dose and image quality assessments.
Diagnostic radiology has undergone profound changes in the last 30 years. New technologies are available to the dental field, cone beam computed tomography (CBCT) as one of the most important. CBCT is a catch-all term for a technology comprising a variety of machines differing in many respects: patient positioning, volume size (FOV), radiation quality, image capturing and reconstruction, image ...
متن کاملMegavoltage cone beam computed tomography: Commissioning and evaluation of patient dose
The improvement in conformal radiotherapy techniques enables us to achieve steep dose gradients around the target which allows the delivery of higher doses to a tumor volume while maintaining the sparing of surrounding normal tissue. One of the reasons for this improvement was the implementation of intensity-modulated radio therapy (IMRT) by using linear accelerators fitted with multi-leaf coll...
متن کاملMeasurement of skin dose from cone-beam computed tomography imaging
OBJECTIVE To measure surface skin dose from various cone-beam computed tomography (CBCT) scanners using point-dosimeters. MATERIALS & METHODS A head anthropomorphic phantom was used with nanoDOT optically stimulated luminescence (OSL) dosimeters (Landauer Corp., Glenwood, IL) attached to various anatomic landmarks. The phantom was scanned using multiple exposure protocols for craniofacial eva...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2017
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(17)31946-1