SIFT-based dense pixel tracking on 0.35 T cine-MR images acquired during image-guided radiation therapy with application to gating optimization

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作   者：

Mazur, Thomas R.;  Fischer-Valuck, Benjamin W.;  Wang, Yuhe;  Yang, Deshan;  Mutic, Sasa;  Li, H. Harold; 

作者机构：

Washington Univ;  MO 63110;  Campus Box 8224;  Dept Radiat Oncol;  Sch Med;  4921 Parkview Pl;  St Louis; 

关键词：

cine-MR acquisitions;  respiratory gating;  image-guided radiation therapy;  intrafractional motion; 

期刊名称：

Medical Physics

i s s n：

0094-2405

年卷期：

2016 年 43 卷 1 期

页   码：

279-293

页   码：

摘   要：

Purpose: To first demonstrate the viability of applying an image processing technique for tracking regions on low-contrast cine-MR images acquired during image-guided radiation therapy, and then outline a scheme that uses tracking data for optimizing gating results in a patient-specific manner.