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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...
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...
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 II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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.
Fundamental Principles of PET
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...

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Related Experiment Video

Updated: May 12, 2026

Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
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Ventilation/perfusion lung scintigraphy. Multiple applications besides pulmonary embolism.

Helmut Sinzinger1, Margarida Rodrigues, Friedrich Kummer

  • 1Department of Nuclear Medicine, Medical University of Vienna, Vienna, Austria. helmut.sinzinger@chello.at

Hellenic Journal of Nuclear Medicine
|March 27, 2013
PubMed
Summary

Ventilation/perfusion scintigraphy is key for pulmonary embolism but underutilized for other lung diseases. This review highlights its broader diagnostic potential beyond just PE detection.

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Area of Science:

  • Nuclear Medicine
  • Pulmonary Medicine
  • Diagnostic Imaging

Background:

  • Ventilation/perfusion (V/Q) scintigraphy is the standard for pulmonary embolism (PE) diagnosis.
  • Its utility for other lung pathologies is often overlooked or underestimated.
  • Understanding V/Q scintigraphy requires integrating imaging findings with lung pathophysiology.

Purpose of the Study:

  • To review the diagnostic value of V/Q scintigraphy for various lung diseases beyond PE.
  • To describe the scintigraphic characteristics, interpretation, and artifacts associated with different pulmonary pathologies.
  • To emphasize the underappreciated clinical potential of V/Q scintigraphy in a wider range of lung conditions.

Main Methods:

  • Literature review focusing on V/Q scintigraphy in pulmonary diseases.
  • Analysis of scintigraphic patterns for common and uncommon lung pathologies.
  • Discussion of interpretation guidelines and potential imaging artifacts.

Main Results:

  • V/Q scintigraphy reveals characteristic patterns for numerous lung diseases, not solely PE.
  • Proper interpretation, considering lung pathophysiology, significantly enhances diagnostic yield.
  • Artefacts can mimic or obscure true pathology, necessitating careful evaluation.

Conclusions:

  • V/Q scintigraphy offers substantial diagnostic information for various lung diseases, often underestimated.
  • Its application is underutilized in clinical practice for conditions other than PE.
  • Further integration of V/Q scintigraphy into the diagnostic workup for diverse pulmonary conditions is warranted.