A temporally and spatially nonscanning imaging spectrometer is described in terms of computedtomography concepts, specifically the central-slice theorem. A sequence of three transmission sinusoidalphase gratings rotated in 60° increments achieves dispersion in multiple directions and into multiple orders. The dispersed images of the system's field stop are interpreted as two-dimensional project...

Monte Carlo (MC) methods are increasingly being utilized to support several aspects of commissioning and clinical operation of ion beam therapy facilities. In this contribution two emerging areas of MC applications are outlined. The value of MC modeling to promote accurate treatment planning is addressed via examples of application of the FLUKA code to proton and carbon ion therapy at the Heide...

This paper describes a totally new way to process Xray data in order to reconstruct the external and internal boundaries of objects, which do not involve Computed Tomography (CT). We show that the segmentation can be performed directly with the raw data, the sinogram produced with the scanner, and that those segmented shapes can be geometrically transformed into reconstructed shapes in the usua...

Wereport a patient with KL-6-producing invasive thymoma.A 58-year-old man was admitted complaining of dyspnea and fatigability. Computedtomography of the chest revealed interstitial pneumoniaand an anterior mediastinal tumor. The tumor was surgically extirpated and diagnosed as invasive thymoma. Serum KL-6 levels later increased further and another tumor was found in the liver. That liver tumor...

We develop a novel interactive segmentation and 3-D visualization system for cone-beam computedtomography (CBCT) data in a personal computer environment. Its design includes both a new user interface to ease the interactive manual segmentation of the volume rendered and artifact-suppressing algorithms to improve the quality of CBCT images. Four pipelines of noise removal were carried out by app...