Mark M. Abrams

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Three features of a fully three-dimensional treatment planning program are presented: (1) The beam's-eye-view provides the user with an accurate reproduction of anatomic features from the viewpoint of a treatment source. The source can be moved to any feasible position relative to the patient, permitting a choice which allows sensitive organs to be excluded(More)
We discuss the scope of a multi-dimensional treatment program designed to assist in planning radiation therapy. It includes: synthesis of diagnostic information; techniques for the assessment and delineation of anatomy; fully three-dimensional simulation of therapy; calculation and assessment of dose distributions; verification of treatment delivery; and(More)
The popularity of the World Wide Web (Web) has generated so much network traffic that it has increased concerns as to how the Internet will scale to meet future demand. The increased population of users and the large size of files being transmitted have resulted in concerns for different types of Internet users. Server administrators want a manageable load(More)
PURPOSE To retrospectively evaluate the presence and distribution patterns of contrast agent retention in the liver on noncontrast computed tomography (CT) immediately following chemoembolization with drug-eluting beads (DEBs). MATERIALS AND METHODS From 2008 to 2010, 95 patients with 224 liver lesions had chemoembolization performed with DEBs and a(More)
We describe a concept for an imaging spectrograph for a large orbiting observatory such as NASA’s proposed Next Generation Space Telescope (NGST) based on an imaging Fourier transform spectrograph (IFTS). An IFTS has several important advantages which make it an ideal instrument to pursue the scientific objectives of NGST. We review the operation of an IFTS(More)
We describe a concept for an imaging spectrograph for a large orbiting observatory such as NASA’s proposed Next Generation Space Telescope (NGST) based on an imaging Fourier transform spectrograph (IFTS). An IFTS has several important advantages that make it an ideal instrument to pursue the scientific objectives of NGST. We review the operation of an IFTS(More)
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