Improving image quality in fast, time-resolved micro-CT by weighted back projection
نویسندگان
چکیده
منابع مشابه
Improving image resolution by adaptive back-projection correction techniques
— The paper describes a back-projection based algorithm, improved by adaptive techniques, able to reconstruct a high-resolution image from multiple low-resolution frames. The proposed approach is mainly based on a specific metric, the uncertainty degree, used in pixel reconstruction and on a local Auto-iterative approach for error correction. Using uncertainty the amount of computation is sensi...
متن کاملImplementing Fast Hierarchical Back Projection
– Filtered back projection (FBP) is a commonly used image reconstruction scheme for parallel beam tomography. The algorithm implemented in this project, called fast hierarchical back projection (FHBP), was proposed in [1] as a fast approximation to the direct FBP technique. Through derivation, implementation and simulation results, I will show a complete picture on this novel algorithm for a cl...
متن کاملIterative reconstruction in head CT: image quality of routine and low-dose protocols in comparison with standard filtered back-projection.
BACKGROUND AND PURPOSE IR has recently demonstrated its capacity to reduce noise and permit dose reduction in abdominal and thoracic CT applications. The purpose of our study was to assess the potential benefit of IR in head CT by comparing objective and subjective image quality with standard FBP at various dose levels. MATERIALS AND METHODS Ninety consecutive patients were randomly assigned ...
متن کاملPatient dose and image quality in low-dose abdominal CT: a comparison between iterative reconstruction and filtered back projection.
BACKGROUND In computed tomography (CT), there is increasing concern for potential CT radiation hazards. Several raw-data-based iterative reconstruction techniques attempt to facilitate low-dose imaging without compromising image quality, which raises the question whether these techniques may allow further dose reduction. PURPOSE To compare image quality of iterative reconstruction and filtere...
متن کاملImage quality characterization in Time-Resolved 3D CE-MRA
TARGET AUDIENCE: Accelerated imaging and reconstruction techniques. PURPOSE: Time-resolved 3D contrast-enhanced MR angiography (CE-MRA) often requires highly accelerated imaging to achieve clinically required temporal and spatial resolutions. Recently developed non-linear reconstruction schemes, e.g. compressed sensing (CS) and HYPR, offer substantially greater acceleration than past methods bu...
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: Scientific Reports
سال: 2020
ISSN: 2045-2322
DOI: 10.1038/s41598-020-74827-x