Deriving Patient-Specific Radiation Dose Prescription Map Using ADC for Dose Painting of Pancreatic Cancer
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Patient-Specific Radiation Dose and Cancer Risk in Computed Tomography Examinations in Ondo, Nigeria
Introduction: The dose in computed tomography (CT) often approach or exceed the optimum levels, thereby increasing the probability of cancer induction. With wide application of this diagnostic test, it is expedient to determine the effective dose (ED) for each patient to estimate their cancer risk. This study was conducted to investigate the patient-specific dose (PSD) and cancer risk in CT exa...
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Millions of women are screened each year using mammography and/or tomosynthesis in order to detect breast cancer at an early stage. Although the radiation doses used are relatively low [1], the breast is one of the most radiation-sensitive organs so constant vigilance is necessary to ensure that the radiation dose is as low as reasonably achievable (the ALARA principle). Despite this vigilance ...
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The purpose of this study was to increase the potential of dose redistribution by incorporating estimates of oxygen heterogeneity within imaging voxels for optimal dose determination. Cellular oxygen tension (pO(2)) distributions were estimated for imaging-size-based voxels by solving oxygen diffusion-consumption equations around capillaries placed at random locations. The linear-quadratic mode...
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Objective(s): Size specific dose estimate (SSDE) is a new parameter that includes patient size factor in its calculation. Recent studies have produced mixed results on the utility of SSDE, especially when automatic exposure control (AEC) was used. The objective of the study was to find out if there is a relationship between patient size and each of the parameters, SSDE...
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ژورنال
عنوان ژورنال: International Journal of Radiation Oncology*Biology*Physics
سال: 2016
ISSN: 0360-3016
DOI: 10.1016/j.ijrobp.2016.06.2376