claudia patricia valdés escobar
... by regulating or adjusting the blood flow, according to the conditions of the body at a given time and the specific needs of an organ, even in case of a disease or any other abnormal situation. According to this, blood flow is an important physiological parameter that constitutes an indicator of the ...
... by regulating or adjusting the blood flow, according to the conditions of the body at a given time and the specific needs of an organ, even in case of a disease or any other abnormal situation. According to this, blood flow is an important physiological parameter that constitutes an indicator of the ...
Parallelized STED fluorescence nanoscopy
... 25. G. Donnert, C. Eggeling, and S. W. Hell, “Major signal increase in fluorescence microscopy through dark-state relaxation,” Nat. Methods 4(1), 81–86 (2007). ...
... 25. G. Donnert, C. Eggeling, and S. W. Hell, “Major signal increase in fluorescence microscopy through dark-state relaxation,” Nat. Methods 4(1), 81–86 (2007). ...
Supernormal vision and high-resolution retinal imaging through
... was evaluated in three ways: by computing the MTF and the point-spread function (PSF) from the wave-front sensor’s measurements of the wave aberration, by measuring the observer’s contrast sensitivity for gratings viewed through the deformable mirror, and by examining the quality of the images of th ...
... was evaluated in three ways: by computing the MTF and the point-spread function (PSF) from the wave-front sensor’s measurements of the wave aberration, by measuring the observer’s contrast sensitivity for gratings viewed through the deformable mirror, and by examining the quality of the images of th ...
development of fourier domain optical coherence
... contributes to the success of studies in developmental biology is the technology that is available for use. Optical coherence tomography (OCT) is one such technology. OCT fills a niche between the high resolution of confocal microscopy and deep imaging penetration of ultrasound. Developmental studie ...
... contributes to the success of studies in developmental biology is the technology that is available for use. Optical coherence tomography (OCT) is one such technology. OCT fills a niche between the high resolution of confocal microscopy and deep imaging penetration of ultrasound. Developmental studie ...
McIntyre, Stuart (2013) Limitations to light microscope resolution in
... Fluorescence imaging has become a vital tool for understanding cardiac cell function. With the advent of calcium-sensitive and fast response voltage-sensitive dyes, it is now possible to gain complex physiological recordings from various cardiac muscle preparations, while simultaneously optically se ...
... Fluorescence imaging has become a vital tool for understanding cardiac cell function. With the advent of calcium-sensitive and fast response voltage-sensitive dyes, it is now possible to gain complex physiological recordings from various cardiac muscle preparations, while simultaneously optically se ...
Enhanced 3D spatial resolution in quantitative phase
... Quantitative phase imaging is commonly used with coherent illumination because it allows a relatively simple interpretation of the measurement, but the drawback is that it also genarates speckle distribution in the images. Only a few techniques can deal with a low temporal coherent source [6,7,9,11, ...
... Quantitative phase imaging is commonly used with coherent illumination because it allows a relatively simple interpretation of the measurement, but the drawback is that it also genarates speckle distribution in the images. Only a few techniques can deal with a low temporal coherent source [6,7,9,11, ...
Absorption and fluorescence spectra of poly
... rather than impurities. Even in the melt, a polymer chain occupies a small portion of the volume it pervades' 3 . In a good solvent, the segment density for a single chain is very low; hence, * The volume expansion of HFIP over the temperature range is ...
... rather than impurities. Even in the melt, a polymer chain occupies a small portion of the volume it pervades' 3 . In a good solvent, the segment density for a single chain is very low; hence, * The volume expansion of HFIP over the temperature range is ...
Measurement and correction of aberrations in light and electron
... rats, the brain has a diameter of many millimeters, while individual functional units such as dendritic spines can have diameters below 100 nm (Harris & Kater, 1994), requiring experimental procedures spanning several orders of magnitude in size. Blood vessels are found throughout the brain, blockin ...
... rats, the brain has a diameter of many millimeters, while individual functional units such as dendritic spines can have diameters below 100 nm (Harris & Kater, 1994), requiring experimental procedures spanning several orders of magnitude in size. Blood vessels are found throughout the brain, blockin ...
Scanning Transmission Electron Microscopy
... in diameter. The existence of an objective aperture in the column has two major implications: (1) As with any apertured optical system, there will be a diffraction limit to the smallest probe that can be formed, and this diffraction limit may well be larger than the source image. (2) The current in ...
... in diameter. The existence of an objective aperture in the column has two major implications: (1) As with any apertured optical system, there will be a diffraction limit to the smallest probe that can be formed, and this diffraction limit may well be larger than the source image. (2) The current in ...
amplitude transfer function
... our analysis has been “diffraction–limited” • Aberration effects on the MTF are FoV (field) location–dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒ the concept ...
... our analysis has been “diffraction–limited” • Aberration effects on the MTF are FoV (field) location–dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒ the concept ...
Non-linear Optical Microscopy and Spectroscopy for
... Recently, TPLSM has been reported to be used in the clinics for detecting nonmelanoma skin cancer, although the research is based on preliminary data [17, 18]. The work presented in this thesis shows that a small shift in excitation wavelength makes a great difference to the outcome. This result is o ...
... Recently, TPLSM has been reported to be used in the clinics for detecting nonmelanoma skin cancer, although the research is based on preliminary data [17, 18]. The work presented in this thesis shows that a small shift in excitation wavelength makes a great difference to the outcome. This result is o ...
100 Years of the Radon Transform
... (UPenn), and Vladimir Panin, Harshali Bal and Michael Casey (Siemens Healthcare, Knoxville, TN). Attenuation correction in PET is usually based on information obtained from transmission tomography (CT) or magnetic resonance imaging (MRI). When such a direct measurement of the attenuation coefficient ...
... (UPenn), and Vladimir Panin, Harshali Bal and Michael Casey (Siemens Healthcare, Knoxville, TN). Attenuation correction in PET is usually based on information obtained from transmission tomography (CT) or magnetic resonance imaging (MRI). When such a direct measurement of the attenuation coefficient ...
Wormald Coupland On measuring 3D flow within inkjet droplet
... In essence, the large refractive index change between different phases causes refraction and reflection at fluid interfaces and this can be attributed to the failure of commercial optical diagnostics. For the most part optical metrology has been developed for use in homogenous fluids or for operatio ...
... In essence, the large refractive index change between different phases causes refraction and reflection at fluid interfaces and this can be attributed to the failure of commercial optical diagnostics. For the most part optical metrology has been developed for use in homogenous fluids or for operatio ...
Theory of the transmission properties of an optical far-field superlens
... The shift of transverse wavenumber for the conversion of evanescent into propagating waves is set by the grating wavenumber, ⌳ ⬇ 2.5k0 in this example, where the wavelength is 376 nm and the periodicity is d = 150 nm. This is fundamental for the image-reconstruction processing using Eq. (2) and sets ...
... The shift of transverse wavenumber for the conversion of evanescent into propagating waves is set by the grating wavenumber, ⌳ ⬇ 2.5k0 in this example, where the wavelength is 376 nm and the periodicity is d = 150 nm. This is fundamental for the image-reconstruction processing using Eq. (2) and sets ...
Stabler, Graham (2005) High resolution wide field surface plasmon
... the light to propagate laterally through the film before re-emitting, to allow this to happen the film must form part of a leaky waveguide structure. Conventionally this would mean that the film would be surrounded by cladding of lower refractive index, this again is rather impractical. Looking at t ...
... the light to propagate laterally through the film before re-emitting, to allow this to happen the film must form part of a leaky waveguide structure. Conventionally this would mean that the film would be surrounded by cladding of lower refractive index, this again is rather impractical. Looking at t ...
Bi Imaging - MicroscopyU
... color combinations. The software should allow for independent threshold (i.e., below desired signal) selection and subtraction from each image before reading out the coefficients. With some programs, a fluorogram can be generated from either the entire image or a selected part of the image (Figure 1 ...
... color combinations. The software should allow for independent threshold (i.e., below desired signal) selection and subtraction from each image before reading out the coefficients. With some programs, a fluorogram can be generated from either the entire image or a selected part of the image (Figure 1 ...
Estimation of longitudinal resolution in optical coherence
... layers and evaluate whether either one of these formulas can be used consistently to predict resolution. A. ...
... layers and evaluate whether either one of these formulas can be used consistently to predict resolution. A. ...
Selective plane illumination microscopy techniques in
... technical constraints of the imaging apparatus. In vivo imaging can potentially capture quantitative data at singlecell resolution. When this imaging is performed noninvasively on intact, fully functioning organisms, time-lapse microscopy allows the study of development over time. Ultimately, one go ...
... technical constraints of the imaging apparatus. In vivo imaging can potentially capture quantitative data at singlecell resolution. When this imaging is performed noninvasively on intact, fully functioning organisms, time-lapse microscopy allows the study of development over time. Ultimately, one go ...
Mid Infrared digital holography and Terahertz imaging
... by reducing the hologram aperture [47]. Real objects never act as ideal reflectors and thus, in practice, one can always think of being in a case, more or less marked, of scattering object; what changes is just the percentage of scattered radiation that ends up in the recording device. The object be ...
... by reducing the hologram aperture [47]. Real objects never act as ideal reflectors and thus, in practice, one can always think of being in a case, more or less marked, of scattering object; what changes is just the percentage of scattered radiation that ends up in the recording device. The object be ...
All-angle negative refraction and imaging in a visible region
... dielectric matrix. When the separation between the nanowires is much smaller than the incident wavelength, these structures can be characterized as indefinite media, whose effective permittivities perpendicular and parallel to the wires are opposite in signs. Under this condition, the dispersion dia ...
... dielectric matrix. When the separation between the nanowires is much smaller than the incident wavelength, these structures can be characterized as indefinite media, whose effective permittivities perpendicular and parallel to the wires are opposite in signs. Under this condition, the dispersion dia ...
BME Syllabus - Biomedical Engineering
... Introduction to electric circuit: laws and theorems for DC circuit; AC circuit: circuit analysis techniques with phasors for single phase sinusoidal circuits (RL, RC and RLC), transient response of capacitor and inductor circuits, sinusoidal-steady-state response, resonance, fourwire system of gener ...
... Introduction to electric circuit: laws and theorems for DC circuit; AC circuit: circuit analysis techniques with phasors for single phase sinusoidal circuits (RL, RC and RLC), transient response of capacitor and inductor circuits, sinusoidal-steady-state response, resonance, fourwire system of gener ...
Ultra–large field-of-view two-photon microscopy
... back aperture that does not exceed 25 mm. The singular choice is a 4-times magnification (f = 45 mm), 0.28 NA air-immersion objective by Olympus (XL Fluor 4X/340) with a 25-mm diameter back aperture and a 29-mm working distance. In addition, we require line-scan rates of ~ 100 Hz for measurements of ...
... back aperture that does not exceed 25 mm. The singular choice is a 4-times magnification (f = 45 mm), 0.28 NA air-immersion objective by Olympus (XL Fluor 4X/340) with a 25-mm diameter back aperture and a 29-mm working distance. In addition, we require line-scan rates of ~ 100 Hz for measurements of ...
Measuring Human Chromosomes using Confocal microscopy
... concluded yet and the arrangement of DNA and histones inside the fibre is still debated.[2] Unlike transmission electron microscopy(TEM) whose penetration depth is smaller than the size of the chromosome, scanning electron microscopy(SEM), one of the most commonly used method in observing fine stru ...
... concluded yet and the arrangement of DNA and histones inside the fibre is still debated.[2] Unlike transmission electron microscopy(TEM) whose penetration depth is smaller than the size of the chromosome, scanning electron microscopy(SEM), one of the most commonly used method in observing fine stru ...
optical coherence tomography
... Tomography is based on the reconstruction of cross-sectional images of an object from its projections. While the basic mathematics was described as early as 1917 by J. Radon,1 the implementation of this principle in medical imaging took a rather long time and led to a great number of configurations, ...
... Tomography is based on the reconstruction of cross-sectional images of an object from its projections. While the basic mathematics was described as early as 1917 by J. Radon,1 the implementation of this principle in medical imaging took a rather long time and led to a great number of configurations, ...