Results 21 to 30 of about 1,009,330 (345)
Current Directions in Biomedical Engineering, 2017 Multimodal imaging is gaining in importance in the field of personalized medicine and can be described as a current trend in medical imaging diagnostics. The segmentation, classification and analysis of tissue structures is essential.
Stich Manuel +3 more
doaj +1 more source
Applied Optics, 1981 The European X-ray Observatory, EXOSAT, to be launched in 1981 will carry two Wolter I x-ray telescopes, each having a geometric area of ~100 cm(2). A qualification model of the Wolter I optics has been manufactured and extensively tested in optical and x-ray beams. The influence of manufacturing tolerances on the resolution of the optics is discussed,
Korte, P.A.J. de +6 more
openaire +4 more sources
Ten recommendations for scanning foraminifera by X-ray computed tomography [PDF]
Journal of MicropalaeontologyMarine sediment cores uniquely provide a temporally high-resolution and well-preserved archive of foraminifera fossils, which are essential for understanding environmental, ecological, and evolutionary dynamics over geological timescales.
A. Searle-Barnes +7 more
doaj +1 more source
Zeitschrift für Medizinische Physik, 2022 Photon-counting (PC) detectors for clinical computed tomography (CT) may offer improved imaging capabilities compared to conventional energy-integrating (EI) detectors, e.g. superior spatial resolution and detective efficiency.
Jaime A. Peña +8 more
doaj +1 more source
Echocardiography–X-Ray Image Fusion
JACC: Cardiovascular Imaging, 2016 An echocardiography X-ray fusion allows for superimposing of 2-dimensional (2D)/3-dimensional (3D) transesophageal echocardiography (TEE) images on a fluoroscopic screen. This approach aligns 2D/3D TEE images into an x-ray fluoroscopic coordinate system.
Faletra, Francesco F +5 more
openaire +2 more sources
A Compact X-ray Source and Possible X-ray Jets within the Planetary Nebula Menzel 3 [PDF]
, 2003 We report the discovery, by the Chandra X-ray Observatory, of X-ray emission from the bipolar planetary nebula Menzel 3. In Chandra CCD imaging, Mz 3 displays hot (3-6x10^6 K) gas within its twin, coaxial bubbles of optical nebulosity, as well as a ...
Adam Frank +10 more
core +3 more sources
, 2018 In this chapter, the physical principles of X-rays are introduced. We start with a general definition of X-rays compared to other well known rays, e. g., the visible light. In Sec. 7.2, we will learn how X-rays can be generated and how they can be characterized with respect to their energy.
Martin Berger, Qiao Yang, Andreas Maier
openaire +1 more source
Mitigation of DMM-induced stripe patterns in synchrotron X-ray radiography through dynamic tilting
Journal of Synchrotron RadiationIn synchrotron X-ray radiography, achieving high image resolution and an optimal signal-to-noise ratio (SNR) is crucial for the subsequent accurate image analysis.
Mustapha Eddah +5 more
doaj +1 more source
Coherent lensless X-ray imaging [PDF]
Nature Photonics, 2010 Very high resolution X-ray imaging has been the subject of considerable research over the past few decades. However, the spatial resolution of these methods is limited by the manufacturing quality of the X-ray optics. More recently, lensless X-ray imaging has emerged as a powerful approach that is able to circumvent this limitation. A number of classes
Chapman, H. N., Nugent, K. A.
openaire +2 more sources
Optical Constraints on an X-ray Transient Source in M31
, 2005 We have detected a transient X-ray source in the M31 bulge through a continuing monitoring campaign with the Chandra ACIS-I camera. The source was detected at R.A.=00:42:33.428 +/- 0.11'', Dec.=+41:17:03.37 +/- 0.11'' in only a single observation taken ...
Benjamin F. Williams +9 more
core +1 more source