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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 [1087 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 [9894 Associated PubMed Articles listed on BioPortfolio]

Agreement of Anterior Segment Parameters Obtained From Swept-Source Fourier-Domain and Time-Domain Anterior Segment Optical Coherence Tomography.

To assess the interdevice agreement between swept-source Fourier-domain and time-domain anterior segment optical coherence tomography (AS-OCT).

Complex regression Doppler optical coherence tomography.

We introduce a new method to measure Doppler shifts more accurately and extend the dynamic range of Doppler optical coherence tomography (OCT). The two-point estimate of the conventional Doppler metho...

Macular and Multifocal PERG and FD-OCT in Pre-perimetric and Hemifield Loss Glaucoma.

To evaluate the ability of macular and multifocal (mf) pattern electroretinogram (PERG) to differentiate pre-perimetric glaucoma (PG) and glaucoma with hemifield loss (GHL) from controls, to compare t...

SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY FINDINGS IN COATS DISEASE.

To evaluate microstructural retinal abnormalities on spectral domain optical coherence tomography (SD-OCT) imaging of eyes with Coats disease.

Cerebral capillary flow imaging by wavelength-division-multiplexing swept-source optical Doppler tomography.

Swept-source optical coherence tomography has demonstrated the unique advantages for fast imaging rate and long imaging distance, however, limited axial resolution and complex phase noises restrict sw...

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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