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Related Concept Videos

X-ray Imaging01:24

X-ray Imaging

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 X-rays, and by 1900, X-ray was widely...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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.
Description of the Procedures
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...
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

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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Related Experiment Video

Updated: Jun 25, 2026

Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition
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Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition

Published on: January 5, 2024

Postarthroplasty examination using X-ray images.

Kush R Varshney, Nikos Paragios, Jean-François Deux

    IEEE Transactions on Medical Imaging
    |February 27, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel method for creating 3D models of joint prostheses from 2D X-rays. This technique aids in noninvasively examining postoperative joint replacements and tracking their motion.

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    Published on: September 6, 2012

    Area of Science:

    • Medical imaging
    • Computer vision
    • Biomedical engineering

    Background:

    • Arthroplasty is a common surgical procedure necessitating noninvasive 3D imaging for joint assessment.
    • Existing methods struggle with shape recovery from X-rays due to lack of texture.

    Discussion:

    • A novel multiview segmentation approach using active contours and level-set implementation is proposed.
    • This method overcomes texture limitations for 3D shape recovery of bones and prostheses.

    Key Insights:

    • Successfully generates 3D shape models of bones and prostheses from 2D X-ray data.
    • Addresses the challenge of shape recovery in texture-less regions.

    Outlook:

    • Enables dynamic 3D motion tracking of joint prostheses from X-ray sequences.
    • Provides crucial kinematic information for postoperative joint evaluation.