Investigation on reconstruction methods applied to 3D terahertz computed tomography
نویسندگان
چکیده
منابع مشابه
Investigation on reconstruction methods applied to 3D terahertz computed tomography.
3D terahertz computed tomography has been performed using a monochromatic millimeter wave imaging system coupled with an infrared temperature sensor. Three different reconstruction methods (standard back-projection algorithm and two iterative analysis) have been compared in order to reconstruct large size 3D objects. The quality (intensity, contrast and geometric preservation) of reconstructed ...
متن کاملMethods to evaluate the performance of kilovoltage cone-beam computed tomography in the three-dimensional reconstruction space
Background: Cone-beam computed tomography (CBCT) scanners for image-guided radiotherapy are in clinical use today, but there has been no consensus on uniform acceptance to verify the CBCT image quality yet. The present work proposed new methods to fully evaluate the performance of CBCT in its three-dimensional (3D) reconstruction space. Materials and Methods: Compared to the traditional methods...
متن کاملDose Reduction Methods in Chest Computed Tomography
Introduction: Computed tomography is one of the most powerful tools for investigating thorax disease, because it shows progression of lung disease much clearer than chest radiography. Technical advances in CT scanners have led to some abilities for CT scanners such as coverage of larger volume, lower noise and ability for acquiring image in one respiratory phase. However, this will be accompani...
متن کامل3D reconstruction of lumbar vertebrae from computed tomography images
INTRODUCTION: Accurate 3D reconstruction of bony structures is essential for many clinical applications, such as evaluation of bone deformation, surgical planning and clinical follow-up of patients. Computed tomography (CT) is a widely used medical imaging technique in clinical routine, especially for bones which provide high contrast. However accurate bone segmentation still remains challengin...
متن کامل3D ROI Image Reconstruction from Truncated Computed Tomography
This paper introduces a novel method for accurate region-of-interest (ROI) reconstruction from 3D computed tomography (CT), consisting of a wavelet-based regularized iterative reconstruction procedure which is guaranteed to converge to an exact or highly accurate solution within the ROI. ROI tomography is motivated by the goal to reduce the overall radiation exposure when primarily the reconstr...
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: Optics Express
سال: 2011
ISSN: 1094-4087
DOI: 10.1364/oe.19.005105