نتایج جستجو برای: target mean ratio
تعداد نتایج: 1390520 فیلتر نتایج به سال:
PURPOSE To investigate the correlations in target volumes based on 18F-FDG PET/CT and four-dimensional CT (4DCT) to detect the feasibility of implementing PET in determining gross target volumes (GTV) for tumor motion for primary thoracic esophageal cancer (EC). METHODS Thirty-three patients with EC sequentially underwent contrast-enhanced 3DCT, 4DCT, and 18F-FDG PET-CT thoracic simulation. T...
When the objective is quick detection both small and large shifts in the process mean with normal distribution, the generalized likelihood ratio (GLR) control charts have better performance as compared to other control charts. Only the fixed parameters are used in Reynolds and Lou’s presented charts. According to the studies, using variable parameters, detect process shifts faster than fixed pa...
In [ 11, it was asserted that a spectral line tracker basedupon the maximum entropy spectral estimator provides a “significantimprovement in tracking performance” over a line tracker basedon theFourier transform spectral estimator. It is shown that the poor perfor-mance of the Fourier transform tracker wasdue in part to the particularimplementation of the tracker. In...
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