Application of a spring-dashpot system to clinical lung tumor motion data
نویسندگان
چکیده
منابع مشابه
A Spring-Dashpot System for Modelling Lung Tumour Motion in Radiotherapy
A 3D system of springs and dashpots is presented to model the motion of a lung tumour during respiration. The main guiding factor in configuring the system is the spatial relationship between abdominal and lung tumour motion. A coupled, non-dimensional triple of ordinary differential equations models the tumour motion when driven by a 3D breathing signal. Asymptotic analysis is used to reduce t...
متن کاملPeriodic Motion of a Mass-Spring System
The equations of planar motion of a mass attached to two anchored massless springs form a symmetric Hamiltonian system. The system has a single dimensionless parameter L, corresponding to the spacing between the anchors. For L > 1, there is a stable equilibrium at which the springs are in tension and lie on a line, but for L < 1, this equilibrium has both springs in compression, and is unstable...
متن کاملA quantitative investigation on lung tumor site on its motion tracking in radiotherapy with external surrogates
Introduction: In external beam radiotherapy each effort is done to deliver 3D dose distribution onto the tumor volume uniformly, while minimizing the dose to healthy organs at the same time. Radiation treatment of tumors located at thorax region such as lung and liver has a challenging issue during target localization since these tumors move mainly due to respiration. There are...
متن کاملSolitary Fibrous Tumor of the Lung: A Case Report
Solitary fibrous tumor (SFT) is a rare mesenchymal tumor of the pleura, which arises from visceral pleura and projects into the pleural cavity. This tumor is not related to asbestos exposure or cigarette smoking (1). We report a rare case of SFT of the lung. In this case report, we present the case of a giant SFT in a 76-year-old woman who presented with the complaint of chest pain on the left...
متن کاملDynamic MLC Tracking Using 4D Lung Tumor Motion Modelling and EPID Feedback
Background: Respiratory motion causes thoracic movement and reduces targeting accuracy in radiotherapy. Objective: This study proposes an approach to generate a model to track lung tumor motion by controlling dynamic multi-leaf collimators. Material and Methods: All slices which contained tumor were contoured in the 4D-CT images for...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Medical Physics
سال: 2013
ISSN: 0094-2405
DOI: 10.1118/1.4788643