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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

11.3K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Related Experiment Video

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Doppler Optical Coherence Tomography of Retinal Circulation
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DualTrack Technology Improves Optical Coherence Tomography Angiography Image Quality.

Luigi A De Vitis, Riccardo Sacconi, Adriano Carnevali

    Ophthalmic Surgery, Lasers & Imaging Retina
    |November 10, 2017
    PubMed
    Summary

    DualTrack Motion Correction Technology in AngioVue optical coherence tomography angiography improves image quality by reducing motion artifacts. While it increases execution time, the enhanced image clarity offers significant clinical benefits.

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    Area of Science:

    • Ophthalmology
    • Medical Imaging
    • Optical Coherence Tomography Angiography

    Background:

    • AngioVue optical coherence tomography angiography (OCTA) is a key diagnostic tool.
    • Motion artifacts can compromise image quality in OCTA.
    • DualTrack Motion Correction Technology aims to mitigate these artifacts.

    Purpose of the Study:

    • To evaluate the impact of DualTrack Motion Correction Technology on AngioVue OCTA performance.
    • To assess changes in execution time, image quality, and motion artifacts.

    Main Methods:

    • Fifty subjects underwent two AngioVue OCTA examinations.
    • The first examination utilized eye-tracking (ET) technology; the second had ET inactivated.
    • Execution time, image availability, image quality, and motion artifacts were quantified.

    Main Results:

    • Mean execution time was lower without ET (P < .05).
    • Image availability was higher with ET (75.0%) compared to without ET (63.0%).
    • Mean number of motion artifacts was significantly lower with ET (P < .0001).

    Conclusions:

    • DualTrack Motion Correction Technology significantly reduces motion artifacts in AngioVue OCTA.
    • Despite increased execution time, the technology enhances image quality, offering clinical advantages.
    • The findings support the use of ET for improved diagnostic accuracy in retinal imaging.