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Related Concept Videos

X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
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Radiological Investigation I: X-ray and CT01:30

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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
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Computed Tomography01:10

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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.
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Imaging Studies I: CT and MRI01:14

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Computed Tomography (CT) scan:
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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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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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[X-ray radiographic imaging technique with high dynamic range].

Bin Liu, Li-Ming Wang, Xin-Yan Su

    Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
    |July 11, 2014
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    Summary
    This summary is machine-generated.

    This study introduces a novel high dynamic range X-ray imaging technique by adjusting tube voltage. This method effectively captures detailed projection information from components of varying thicknesses, overcoming conventional system limitations.

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    Area of Science:

    • Medical Imaging
    • Materials Science
    • Physics

    Context:

    • Conventional X-ray imaging systems struggle with wide dynamic range scenes due to fixed energy parameters, leading to overexposure or underexposure.
    • Component structures, material attenuation coefficients, and device limitations contribute to information loss in standard X-ray radiography.
    • High transmitted X-ray luminous can saturate imaging systems, while low levels fall below thermal noise, rendering images useless.

    Purpose:

    • To develop a high dynamic range X-ray radiographic imaging technique overcoming limitations of conventional systems.
    • To analyze the impact of charge capacity on effective irradiating thickness in X-ray imaging.
    • To establish a relationship between X-ray tube voltage range and component properties for optimal sensitivity.

    Summary:

    • A new X-ray imaging technique adjusts tube voltage to achieve high dynamic range, addressing issues with fixed energy parameters.
    • The study analyzes charge capacity's influence on effective irradiating thickness and determines optimal voltage ranges for various materials and component structures.
    • An adjusting strategy for tube voltage and an effective subgraph extraction method were developed and applied to components ranging from 0 to 20 mm thickness.

    Impact:

    • The developed high dynamic range X-ray imaging technique effectively images components with diverse thicknesses.
    • This method enables the acquisition of more detailed projection information through image fusion.
    • The technique offers a viable solution for imaging challenges posed by wide dynamic range scenarios in X-ray radiography.