نتایج جستجو برای: relative displacement

تعداد نتایج: 440002  

Journal: :Oil & Gas Science and Technology – Revue de l’Institut Français du Pétrole 2009

Journal: :Radiation Oncology (London, England) 2008
Judit Boda-Heggemann Frederick Marc Köhler Hansjörg Wertz Michael Ehmann Brigitte Hermann Nadja Riesenacker Beate Küpper Frank Lohr Frederik Wenz

BACKGROUND Image-guidance systems allow accurate interfractional repositioning of IMRT treatments, however, these may require up to 15 minutes. Therefore intrafraction motion might have an impact on treatment precision. 3D geometric data regarding intrafraction prostate motion are rare; we therefore assessed its magnitude with pre- and post-treatment fiducial-based imaging with cone-beam-CT (CB...

2014
Pan Ma Wei Xiong Baosheng Tan Wei Geng Jiaqiang Liu Weihong Li Dehua Li

This study investigated the influence of thread pitch, helix angle, and compactness on micromotion in immediately loaded implants in bone of varying density (D2, D3, and D4). Five models of the three-dimensional finite element (0.8 mm pitch, 1.6 mm pitch, 2.4 mm pitch, double-threaded, and triple-threaded implants) in three types of bone were created using Pro/E, Hypermesh, and ABAQUS software....

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