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Related Concept Videos

Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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,...
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...

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Related Experiment Video

Updated: May 21, 2026

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
05:56

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment

Published on: August 9, 2024

Pulmonary perfusion imaging using MRI: clinical application.

Sebastian Ley1, Julia Ley-Zaporozhan

  • 1Division of Cardiothoracic Imaging, Department of Medical Imaging, Toronto General Hospital, University of Toronto and University Health Network, Toronto General Hospital, 585 University Avenue, Toronto, Ontario, M5G 2N2, Canada, ley@gmx.de.

Insights Into Imaging
|June 15, 2012
PubMed
Summary
This summary is machine-generated.

This review explores Magnetic Resonance (MR) perfusion imaging for assessing lung perfusion, crucial for oxygenation. It details techniques and clinical applications for pulmonary and parenchymal diseases.

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Last Updated: May 21, 2026

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
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Published on: August 9, 2024

Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling
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Published on: May 30, 2011

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10:44

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Published on: June 21, 2024

Area of Science:

  • Radiology
  • Medical Imaging
  • Pulmonary Medicine

Background:

  • Lung perfusion is vital for oxygenation.
  • Pulmonary arterial and parenchymal diseases impair lung perfusion.
  • Accurate assessment is critical for patient workup.

Purpose of the Study:

  • To provide insight into imaging techniques for lung perfusion assessment.
  • To focus on the clinical application of MR perfusion.
  • To discuss qualitative and quantitative evaluation methods.

Main Methods:

  • Review of current literature on MR perfusion imaging.
  • Discussion of non-contrast-enhanced (arterial spin labeling) techniques.
  • Exploration of contrast-enhanced perfusion techniques.

Main Results:

  • MR perfusion offers valuable insights into lung perfusion.
  • Both qualitative and quantitative evaluation methods are discussed.
  • Clinical applications in pulmonary and parenchymal diseases are highlighted.

Conclusions:

  • MR perfusion imaging is a key tool for evaluating lung perfusion.
  • Arterial spin labeling and contrast-enhanced techniques are major methods.
  • Understanding these techniques aids in diagnosing and managing lung diseases.