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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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Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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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.
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 I: CT and MRI01:14

Imaging Studies I: CT and MRI

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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:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Related Experiment Video

Updated: Aug 26, 2025

High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
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[Portable X-ray devices: technique, image quality and regulations].

R C Hoogeveen, W E R Berkhout

    Nederlands Tijdschrift Voor Tandheelkunde
    |October 12, 2022
    PubMed
    Summary

    Portable intraoral X-ray devices offer comparable diagnostic quality to conventional units. However, operator radiation dose is higher, necessitating specific guidelines for their safe use in dentistry.

    Area of Science:

    • Dental Radiology
    • Medical Imaging Technology

    Background:

    • Portable intraoral X-ray devices are emerging as alternatives to traditional wall-mounted systems.
    • Concerns exist regarding operator radiation exposure and diagnostic efficacy compared to conventional devices.

    Purpose of the Study:

    • To evaluate the diagnostic quality of portable intraoral X-ray devices.
    • To assess operator radiation exposure when using portable X-ray devices.
    • To inform guidelines on the safe and effective use of portable dental X-ray technology.

    Main Methods:

    • Clinical trial comparing diagnostic quality of portable and conventional intraoral X-ray devices.
    • Dosimetry measurements to determine operator radiation exposure.
    • Analysis of radiation protection measures, including collimation and shielding.

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    Main Results:

    • Diagnostic quality of CE-certified portable devices is comparable to conventional units.
    • Operator radiation dose is higher with portable devices, even with protective measures.
    • Current Dutch guidelines restrict portable device use to ambulant settings with extra precautions.

    Conclusions:

    • Portable intraoral X-ray devices can achieve adequate diagnostic quality.
    • Operator safety requires careful consideration due to increased radiation dose.
    • Further research into potential benefits of proximity control may influence future guidelines.
    • Dentists must be cautious of non-CE-certified, potentially unsafe portable X-ray devices.