Sparsity and low-contrast object detectability
نویسندگان
چکیده
منابع مشابه
Magnetic Resonance in Medicine 67:1022–1032 (2012) Sparsity and Low-Contrast Object Detectability
685. 12. Trzasko JD, Haider CR, Borisch EA, Riederer SJ, Manduca A. Nonconvex Compressive Sensing with Parallel Imaging for Highly Accelerated 4D CE-MRA. In: Proceedings of the 18th Annual Meeting of the ISMRM, Stockholm, Sweden, 2010. Abstract 347. 13. Gamper U, Boesiger P, Kozerke S. Compressed sensing in dynamic MRI. Magn Reson Med 2008;59:365–373. 14. Hu S, Lustig M, Chen AP, Crane J, Kerr ...
متن کاملCompressive Sensing and Low Contrast Detectability
Introduction: Compressive Sensing (CS) is a powerful data acquisition and reconstruction paradigm that has facilitated the substantial acceleration of several MRI applications with little compromise in image quality [1,2]. To date, the most successful applications of CS to MRI have focused on situations where the information of interest is represented by high-contrast features (e.g. contrast-en...
متن کاملHow Different Iterative and Filtered Back Projection Kernels Affect Computed Tomography Numbers and Low Contrast Detectability.
OBJECTIVE The aim of this study was to evaluate how different iterative and filtered back projection kernels affect the computed tomography (CT) numbers and low contrast detectability. METHODS Five different scans were performed at 6 different tube potentials on the same Catphan 600 phantom using approximately the same dose level and otherwise identical settings. The scans were reconstructed ...
متن کاملEvaluation of Low-Contrast Detectability of Iterative Reconstruction Across Multiple Institutions, Manufacturers and Exposure Levels1
Purpose: To compare image resolution using Iterative Reconstruction (IR) with the resolution using Filtered Back Projection (FBP), for low-contrast objects in phantom images across vendors and exposure levels. Materials and Methods: Randomized repeat scans of the Gammex 464 American College of Radiology (ACR) CT Accreditation Phantom (Module 2, Low-contrast) were performed for multiple radiatio...
متن کاملEffect of Low Tube Voltage on Image Quality, Radiation Dose, and Low-Contrast Detectability at Abdominal Multidetector CT: Phantom Study
PURPOSE To investigate the effect of low tube voltage (80 kV) on image quality, radiation dose, and low-contrast detectability (LCD) at abdominal computed tomography (CT). MATERIALS AND METHODS A phantom containing low-contrast objects was scanned with a CT scanner at 80 and 120 kV, with tube current-time product settings at 150-650 mAs. The differences between image noise, contrast-to-noise ...
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: Magnetic Resonance in Medicine
سال: 2011
ISSN: 0740-3194
DOI: 10.1002/mrm.23084