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Measurement of Total Retinal Blood Flow and Oxygen Extraction in Patients With Diabetes and Healthy Subjects

2018-06-15 02:13:09 | BioPortfolio

Published on BioPortfolio: 2018-06-15T02:13:09-0400

Clinical Trials [1222 Associated Clinical Trials listed on BioPortfolio]

The Validity of Retinal Blood Flow Measurements During Hyperoxia in Humans Using Fourier Domain Color Doppler Optical Coherence Tomography (CDOCT)

Noninvasive monitoring of blood flow in retinal circulation may elucidate the progression and treatment of ocular disorders, including diabetic retinopathy, age-related macular degeneratio...

Fourier Transformed Infrared Spectroscopy in Macular Surgery

Epiretinal membranes (ERM) are disorders leading to vision loss and metamorphopsia. Vitrectomy with membrane peeling has developed to be the gold-standard in treatment of ERM. ERM can be w...

Retinal Neuro-vascular Coupling in Patients With Non-arteritic Anterior Ischemic Optic Neuropathy

Ischemic optic neuropathy is among the most common causes of serious impaired vision in the middle-aged and elderly population in the western world. The current study focuses on a subgroup...

Ocular Imaging With Spectral Domain Optical Coherence Tomography

The purpose of this study is to analyze macular retinal thickness and macular volume using the spectral domain - optical coherence tomography (SD-OCT) in normal eyes and in eyes with vario...

Retinal Thickness and Volume Estimates Given by Time Domain and Spectral Optical Coherence Tomography

The purpose of the present study is to determine if the retinal thickness estimates of the Stratus OCT, the 3D OCT-1000, and the CirrusHD OCT are comparable in diabetic and in healthy indi...

PubMed Articles [9823 Associated PubMed Articles listed on BioPortfolio]

Contribution of Fourier-domain optical coherence tomography to the diagnosis of keratoconus progression.

To determine the anatomic criteria for diagnosing keratoconus progression by corneal optical coherence tomography (OCT).

Ultra low noise Fourier domain mode locked laser for high quality megahertz optical coherence tomography.

We investigate the origin of high frequency noise in Fourier domain mode locked (FDML) lasers and present an extremely well dispersion compensated setup which virtually eliminates intensity noise and ...

Evaluation of toxic retinopathy caused by antimalarial medications with spectral domain optical coherence tomography.

To investigate the frequency of toxic retinopathy in patients with lupus erythematosus and rheumatoid arthritis with long-term use of chloroquine diphosphate or hydroxychloroquine through spectral dom...

Mid-infrared Fourier-domain optical coherence tomography with a pyroelectric linear array.

Optical technology in the mid-infrared wavelength range is currently a rapidly developing field initiated by the availability of novel high-power and spatially coherent sources. Non-destructive testin...

Interferometric detection of 3D motion using computational subapertures in optical coherence tomography.

Doppler optical coherence tomography (OCT) quantifies axial motion with high precision, whereas lateral motion cannot be detected by a mere evaluation of phase changes. This problem was solved by the ...

Medical and Biotech [MESH] Definitions

An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.

Analysis based on the mathematical function first formulated by Jean-Baptiste-Joseph Fourier in 1807. The function, known as the Fourier transform, describes the sinusoidal pattern of any fluctuating pattern in the physical world in terms of its amplitude and its phase. It has broad applications in biomedicine, e.g., analysis of the x-ray crystallography data pivotal in identifying the double helical nature of DNA and in analysis of other molecules, including viruses, and the modified back-projection algorithm universally used in computerized tomography imaging, etc. (From Segen, The Dictionary of Modern Medicine, 1992)

Echocardiography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image.

Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.

Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.

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