Frederiek M. Lever

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PURPOSE To investigate the potential of diffusion weighted MRI for esophageal cancer imaging for treatment volume definition, and to determine the need for geometrical correction of DWI images. METHODS Three patients with esophageal cancer were included in this study. A heavily diffusion weighted free-breathing DWI scan (b=800 s/mm2) with echo-planar(More)
To outline the current role and future potential of magnetic resonance imaging (MRI) in the management of oesophageal cancer regarding T-staging, N-staging, tumour delineation for radiotherapy (RT) and treatment response assessment. PubMed, Embase and the Cochrane library were searched identifying all articles related to the use of MRI in oesophageal(More)
This paper reporting on techniques for esophageal evaluation and imaging and drugs for esophageal disease includes commentaries on endoscopy techniques including dye-based high-resolution and dye-less high-definition endoscopy; the shift from CT to MRI guidance in tumor delineation for radiation therapy; the role of functional lumen imaging in measuring(More)
For radiotherapy, oesophageal cancer is located in a difficult area. Spatial control of the dose distribution is difficult to achieve with current CT-based radiation techniques, as on CT, soft-tissue contrast is too low. Furthermore, the oesophagus moves and organs at risk (e.g. lung, heart, liver, spinal cord) are in close proximity. An 1.5 T(More)
PURPOSE To quantify the movement of esophageal tumors noninvasively on cine-magnetic resonance imaging (MRI) by use of a semiautomatic method to visualize tumor movement directly throughout multiple breathing cycles. METHODS AND MATERIALS Thirty-six patients with esophageal tumors underwent MRI. Tumors were located in the upper (8), middle (7), and lower(More)
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