Contrast media-assisted visualization of brain metastases by kilovoltage cone-beam CT
نویسندگان
چکیده
منابع مشابه
A comprehensive study on decreasing the kilovoltage cone‐beam CT dose by reducing the projection number
The objective of this study was to evaluate the effect of kilovoltage cone-beam computed tomography (CBCT) on registration accuracy and image qualities with a reduced number of planar projections used in volumetric imaging reconstruction. The ultimate goal is to evaluate the possibility of reducing the patient dose while maintaining registration accuracy under different projection-number scheme...
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The pharmacokinetic behavior of iodine contrast agents makes it difficult to achieve significant enhancement during contrast-enhanced cone-beam CT (CE-CBCT). This study modeled this dynamic behavior to optimize CE-CBCT and improve the localization of liver lesions for SBRT. We developed a model that allows for controlled study of changing iodine concentrations using static phantoms. A projectio...
متن کاملFeasibility study on effect and stability of adaptive radiotherapy on kilovoltage cone beam CT
BACKGROUND We have analyzed the stability of CT to density curve of kilovoltage cone-beam computerized tomography (kV CBCT) imaging modality over the period of six months. We also, investigated the viability of using image value to density table (IVDT) generated at different time, for adaptive radiotherapy treatment planning. The consequences of target volume change and the efficacy of kV CBCT ...
متن کاملInclusion of the dose from kilovoltage cone beam CT in the radiation therapy treatment plans.
PURPOSE Cone beam CT is increasingly being used for daily patient positioning verification during radiation therapy treatments. The daily use of CBCT could lead to accumulated patient doses higher than the older technique of weekly portal imaging. There have been several studies focusing on measurement or calculation of the patient dose from CBCT recently. METHODS This study investigates the ...
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ژورنال
عنوان ژورنال: Acta Oncologica
سال: 2009
ISSN: 0284-186X,1651-226X
DOI: 10.1080/02841860802310983