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Related Concept Videos

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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Computed Tomography01:10

Computed Tomography

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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...
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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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.
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...
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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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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.
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...
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Updated: Jun 13, 2025

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
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Advances in CT-based lung function imaging for thoracic radiotherapy.

Suyan Bi1, Qingqing Yuan2, Zhitao Dai2

  • 1School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.

Frontiers in Oncology
|September 17, 2024
PubMed
Summary
This summary is machine-generated.

CT-based lung function imaging enhances thoracic radiotherapy by identifying functional lung regions. This method avoids extra radiation and costs, improving treatment planning and lung injury monitoring.

Keywords:
CT-based functional imaging (CTVI)four-dimensional CT(4D-CT)magnetic resonance imaging (MRI)perfusion imagingradiotherapysingle-photon emission computed tomography (SPECT)ventilation imaging

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Area of Science:

  • Medical Imaging
  • Radiotherapy
  • Pulmonary Function Assessment

Background:

  • Thoracic radiotherapy requires precise targeting to minimize damage to healthy lung tissue.
  • Assessing lung function is crucial for optimizing radiation dose and predicting treatment outcomes.
  • Current methods for lung function assessment may involve additional procedures or radiation exposure.

Purpose of the Study:

  • To review the benefits and challenges of CT-based lung function imaging in radiotherapy.
  • To explore techniques like 4D-CT and end-inspiratory/end-expiratory CT for functional lung delineation.
  • To identify directions for future research in this field.

Main Methods:

  • Review of existing literature on CT-based lung function imaging techniques.
  • Classification and analysis of studies utilizing phase-resolved 4D-CT and static CT scans.
  • Extraction of functional parameters such as lung volume and ventilation distribution.

Main Results:

  • CT-based lung function imaging utilizes routine CT scans, avoiding additional radiation and costs.
  • It enables the identification of distinct functional lung regions for precise radiotherapy planning.
  • This technique aids in minimizing radiation to healthy tissue and predicting/detecting lung injury.

Conclusions:

  • CT-based lung function imaging offers significant advantages for thoracic radiotherapy.
  • It improves treatment effectiveness and patient safety by enabling functional lung assessment.
  • Further research is needed to overcome current challenges and optimize clinical application.