EP-1315: Deformable versus rigid registration of PET/CT to planning CT for target volumes of esophageal cancer
نویسندگان
چکیده
منابع مشابه
Comparative evaluation of target volumes defined by deformable and rigid registration of diagnostic PET/CT to planning CT in primary esophageal cancer
BACKGROUND To evaluate the geometrical differences of target volumes propagated by deformable image registration (DIR) and rigid image registration (RIR) to assist target volume delineation between diagnostic Positron emission tomography/computed tomography (PET/CT) and planning CT for primary esophageal cancer (EC). METHODS Twenty-five patients with EC sequentially underwent a diagnostic F-f...
متن کاملDeformable versus rigid registration of PET/CT images for radiation treatment planning of head and neck and lung cancer patients: a retrospective dosimetric comparison
BACKGROUND The purpose of this study is to evaluate the clinical impact of using deformable registration in tumor volume definition between separately acquired PET/CT and planning CT images. METHODS Ten lung and 10 head and neck cancer patients were retrospectively selected. PET/CT images were registered with planning CT scans using commercially available software. Radiation oncologists defin...
متن کاملComparative evaluation of CT-based and PET/4DCT-based planning target volumes in the radiation of primary esophageal cancer.
PURPOSE To compare planning target volume (PTV) defined by PET combined with 4DCT to 3DCT and 4DCT. METHODS Eighteen (18/30) esophageal cancer patients who underwent 3DCT, 4DCT and (18)F-FDG PET-CT thoracic simulation with SUVmax≥2.0 of the primary volume were enrolled. CTV3D was formed on 3DCT by adding a margin of 30 mm in cranial-caudal direction and 5 mm in transversal direction. PTV3D wa...
متن کاملComparison of planning target volumes based on three-dimensional and four-dimensional CT imaging of thoracic esophageal cancer
BACKGROUND AND PURPOSE To investigate the definition of planning target volumes (PTVs) based on four-dimensional computed tomography (4DCT) compared with conventional PTV definition and PTV definition using asymmetrical margins for thoracic primary esophageal cancer. MATERIALS AND METHODS Forty-three patients with esophageal cancer underwent 3DCT and 4DCT simulation scans during free breathin...
متن کاملEvaluation of Deformable Image Registration-Based Contour Propagation From Planning CT to Cone-Beam CT
PURPOSE We evaluated the performance of organ contour propagation from a planning computed tomography to cone-beam computed tomography with deformable image registration by comparing contours to manual contouring. MATERIALS AND METHODS Sixteen patients were retrospectively identified based on showing considerable physical change throughout the course of treatment. Multiple organs in the 3 reg...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2015
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(15)41307-6