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Related Concept Videos

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...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
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 for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Computed Tomography01:10

Computed Tomography

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...
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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Functional imaging: CT and MRI.

Edwin J R van Beek1, Eric A Hoffman

  • 1Department of Radiology, Carver College of Medicine, University of Iowa, C-751 GH, 200 Hawkins Drive, Iowa City, IA 52242-1077, USA. edwin-vanbeek@uiowa.edu

Clinics in Chest Medicine
|February 13, 2008
PubMed
Summary
This summary is machine-generated.

Advanced imaging techniques like CT and MRI offer detailed insights into regional pulmonary function, assessing lung vasculature, perfusion, ventilation, and air space dynamics for comprehensive lung evaluation.

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Area of Science:

  • Pulmonary Medicine
  • Medical Imaging
  • Radiology

Background:

  • Evaluating regional pulmonary function is crucial for diagnosing and managing lung diseases.
  • Traditional imaging methods have limitations in assessing dynamic lung function.

Purpose of the Study:

  • To review current and advanced imaging techniques for assessing regional pulmonary function.
  • To highlight the capabilities of CT and MRI in evaluating lung vasculature, perfusion, and ventilation.

Main Methods:

  • Contrast-enhanced CT for vasculature and perfusion assessment.
  • Spirometric-controlled multi-detector row CT for pathology quantification.
  • Xenon gas CT for regional ventilation assessment.
  • Gadolinium-enhanced MRI and hyperpolarized gas MRI for functional lung assessment.

Main Results:

  • CT methods enable quantification of lung perfusion and ventilation, and assessment of parenchymal and airway pathology.
  • MRI advances provide functional assessment, including ventilation/perfusion, air space measurements, and gas transport dynamics.

Conclusions:

  • Advanced imaging techniques significantly enhance the ability to evaluate regional pulmonary function.
  • CT and MRI offer complementary and powerful tools for comprehensive lung assessment.