Publications by authors named "T E Warfel"
Objective: The purpose of our study was to assess relative intra- and interobserver agreement in detecting pulmonary nodules when interpreting low-dose chest CT screening examinations.
Materials And Methods: Two hundred ninety-three selected low-dose CT examinations of the lung were independently interpreted by three radiologists to detect and classify pulmonary nodules. The data set selected was enriched with examinations depicting pulmonary nodules.
Article Synopsis
- Five years ago, our department switched from using film to a computer system called PACS for patient imaging.
- We realized that using paper forms to track patient information was slowing us down.
- We are now mostly paperless and are working on improving how we use integrated dictation to make things even better in the future.
Purpose: To measure observer performance at various levels of prevalence.
Materials And Methods: A multiobserver multiabnormality receiver operating characteristic (ROC) study to assess the effect of prevalence on observer performance was conducted. Fourteen observers, including eight faculty members, two fellows, and four residents, interpreted 1,632 posteroanterior chest images with five prevalence levels by using a nested study design.
Parallel data resampling and Fourier inversion by the scan-line method.
IEEE Trans Med Imaging
October 2012
Fourier inversion is an efficient method for image reconstruction in a variety of applications, for example, in computed tomography and magnetic resonance imaging. Fourier inversion normally consists of two steps, interpolation of data onto a rectilinear grid, if necessary, and inverse Fourier transformation. Here, the authors present interpolation by the scan-line method, in which the interpolation algorithm is implemented in a form consisting only of row operations and data transposes.
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