Results 271 to 280 of about 1,035,910 (309)
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Journal of Geophysical Research: Solid Earth, 2019
In this study, a nano‐focus X‐ray computed tomography (X‐CT) is used to observe the formation of methane hydrate in sands on pore scale and to quantify hydrate saturation, pore structure parameters, and permeability of hydrate‐bearing sands.
Chengfeng Li +6 more
semanticscholar +1 more source
In this study, a nano‐focus X‐ray computed tomography (X‐CT) is used to observe the formation of methane hydrate in sands on pore scale and to quantify hydrate saturation, pore structure parameters, and permeability of hydrate‐bearing sands.
Chengfeng Li +6 more
semanticscholar +1 more source
2017
This chapter provides an overview of the use of x-ray and computed tomography (CT)-based imaging for brachytherapy. Treatment planning in brachytherapy requires accurate imaging of both the implanted materials and the surrounding anatomy. Ultrasound (US) and magnetic resonance imaging (MRI), which can provide excellent soft-tissue contrast for ...
Michael J. Zelefsky, Martin T. King
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This chapter provides an overview of the use of x-ray and computed tomography (CT)-based imaging for brachytherapy. Treatment planning in brachytherapy requires accurate imaging of both the implanted materials and the surrounding anatomy. Ultrasound (US) and magnetic resonance imaging (MRI), which can provide excellent soft-tissue contrast for ...
Michael J. Zelefsky, Martin T. King
openaire +2 more sources
X-ray computed tomography for additive manufacturing: a review
, 2016In this review, the use of x-ray computed tomography (XCT) is examined, identifying the requirement for volumetric dimensional measurements in industrial verification of additively manufactured (AM) parts.
A. Thompson, I. Maskery, R. Leach
semanticscholar +1 more source
1980
Matter is made of elementary particles consisting of a nucleus composed of protons and neutrons surrounded by electrons. The protons are hydrogen nuclei with a positive charge and their number determines the atomic number. The neutrons, which have no electric charge, form with the protons the nucleons which determine the atomic mass.
J. Saudinos, G. Salamon
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Matter is made of elementary particles consisting of a nucleus composed of protons and neutrons surrounded by electrons. The protons are hydrogen nuclei with a positive charge and their number determines the atomic number. The neutrons, which have no electric charge, form with the protons the nucleons which determine the atomic mass.
J. Saudinos, G. Salamon
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Dose in x-ray computed tomography
Physics in Medicine and Biology, 2014Radiation dose in x-ray computed tomography (CT) has become a topic of high interest due to the increasing numbers of CT examinations performed worldwide. This review aims to present an overview of current concepts for both scanner output metrics and for patient dosimetry and will comment on their strengths and weaknesses.
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Applied X-ray computed tomography
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1995Abstract The application of X-ray computed tomography (CT) for aircraft and aerospace structures and ancillary equipment has been investigated in the Advanced Development of X-Ray Computed Tomography Applications demonstration (CTAD) program sponsored by the NDE Branch of the Materials Directorate at the Air Force Wright Laboratory.
C.F. Buynak, R.H. Bossi
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, 2018
The development of the advanced imaging probe holds the key to the achievement of target imaging and metastasis tracing. The bismuth based nanoprobe has been regarded as the most promising X-ray computed tomography probe due to its largest X-ray ...
Huiting Bi +9 more
semanticscholar +1 more source
The development of the advanced imaging probe holds the key to the achievement of target imaging and metastasis tracing. The bismuth based nanoprobe has been regarded as the most promising X-ray computed tomography probe due to its largest X-ray ...
Huiting Bi +9 more
semanticscholar +1 more source
X-Ray Angiography in the Computed Tomography [PDF]
, 1996 X-ray angiography had once been considered as the sole method to evaluate blood vessels, and also is an important examination for intracranial neoplasms. As computed tomography (CT) and magnetic resonance imaging (MRI) is used more extensively, the number of X-ray angiography has been reduced dramatically.
Zhu Mingwang, Dai Jian-ping
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Accelerating X-ray fluorescence computed tomography
2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009This paper presents new approaches to accelerating X-ray fluorescence tomography (XFCT) that are grounded in both novel image acquisition strategies that improve the quality of the data acquired and in image reconstruction strategies that reduce the amount of data acquired.
Phillip Vargas +3 more
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X-Ray Imaging and Computed Tomography
2020Synopsis: In this chapter, the reader is introduced to the basic physics of x-rays and their implementation in planar and computed tomography (CT) imaging.
John A. Kennedy +3 more
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