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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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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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X-ray Imaging01:24

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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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Related Experiment Video

Updated: Jun 14, 2025

Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
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Automated Quality Control Solution for Radiographic Imaging of Lung Diseases.

Christoph Kleefeld1, Jorge Patricio Castillo Lopez2, Paulo R Costa3

  • 1Department of Medical Physics and Clinical Engineering, University Hospital Galway and Physics, School of Natural Sciences, University of Galway, H91 TK33 Galway, Ireland.

Journal of Clinical Medicine
|August 29, 2024
PubMed
Summary

The International Atomic Energy Agency (IAEA) remote quality control (QC) method for radiography shows potential but faces challenges. Issues with image access, system variability, and phantom inconsistencies hinder reliable image quality (IQ) assessment.

Keywords:
automatedchest radiographyimage qualityquality assurancequality controlremote

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Area of Science:

  • Medical Imaging
  • Radiography Quality Control
  • Pulmonary Medicine

Background:

  • Radiography is vital for early lung disease detection and monitoring.
  • Consistent image quality (IQ) is essential for accurate diagnosis and patient management.
  • The International Atomic Energy Agency (IAEA) developed a remote, automated quality control (QC) methodology.

Purpose of the Study:

  • To evaluate the feasibility and effectiveness of the IAEA's remote and automated QC methodology.
  • To identify challenges in implementing standardized radiography QC.
  • To assess image quality parameters across digital radiographic units.

Main Methods:

  • Collected longitudinal data from 22 digital radiographic units (47 datasets) between April-December 2022.
  • Utilized 968 exposures with metadata on setup, exposure, and imaging modes.
  • Developed Python scripts for data collation, analysis, and visualization of IQ metrics.

Main Results:

  • Manufacturer restrictions impede raw image access.
  • Significant variability in IQ parameters observed across identical systems and acquisitions.
  • Inconsistent phantom construction and vendor-dependent DICOM tags affect IQ assessment.
  • Signal-to-noise ratio (SNR) showed high variability, reducing its reliability.

Conclusions:

  • Cross-comparisons between radiography systems require caution due to phantom and acquisition variations.
  • Addressing identified issues is crucial for developing reliable, standardized QC programs.
  • Standardized QC is essential for accurate evaluations, particularly in chest imaging.