Related Experiment Video
Updated: Feb 11, 2026
Detection of Invasive Pulmonary Aspergillosis in Haematological Malignancy Patients by using Lateral-flow Technology
Published on: March 22, 2012
Molecular Imaging of Invasive Pulmonary Aspergillosis Using ImmunoPET/MRI: The Future Looks Bright
1Department of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom.
Abstract:
Invasive pulmonary aspergillosis (IPA) is a life-threatening lung disease of immuno-compromised humans caused by the ubiquitous environmental mold Aspergillus. Biomarker tests for the disease lack sensitivity and specificity, and culture of the fungus from invasive lung biopsy is slow, insensitive, and undesirable in critically ill patients. A computed tomogram (CT) of the chest offers a simple non-intrusive diagnostic procedure for rapid decision making, and so is used in many hematology units to drive antifungal treatment. However, radiological indicators that raise the suspicion of IPA are either transient signs in the early stages of the disease or not specific for Aspergillus infection, with other angio-invasive molds or bacterial pathogens producing comparable radiological manifestations in a chest CT. Improvements to the specificity of radiographic imaging of IPA have been attempted by coupling CT and positron emission tomography (PET) with [18F]fluorodeoxyglucose ([18F]FDG), a marker of metabolic activity well suited to cancer imaging, but with limited use in invasive fungal disease diagnostics due to its inability to differentiate between infectious etiologies, cancer, and inflammation. Bioluminescence imaging using single genetically modified strains of Aspergillus fumigatus has enabled in vivo monitoring of IPA in animal models of disease. For in vivo detection of Aspergillus lung infections in humans, radiolabeled Aspergillus-specific monoclonal antibodies, and iron siderophores, hold enormous potential for clinical diagnosis. This review examines the different experimental technologies used to image IPA, and recent advances in state-of-the-art molecular imaging of IPA using antibody-guided PET/magnetic resonance imaging (immunoPET/MRI).
Insights
Diagnosing invasive pulmonary aspergillosis (IPA) is challenging. New molecular imaging techniques, like antibody-guided PET/MRI, show promise for accurate in vivo detection of Aspergillus infections in humans.
Area of Science:
- Medical imaging
- Infectious diseases
- Pulmonology
Background:
- Invasive pulmonary aspergillosis (IPA) is a severe lung infection in immunocompromised individuals, caused by Aspergillus mold.
- Current diagnostic methods, including biomarker tests and fungal cultures, suffer from low sensitivity, specificity, and slow results.
- Computed tomography (CT) scans provide rapid insights but lack specificity, often showing signs similar to other infections or inflammation.
Purpose of the Study:
- To review and examine experimental technologies for imaging IPA.
- To highlight recent advancements in molecular imaging for IPA diagnosis.
- To explore the potential of antibody-guided PET/MRI for in vivo detection of Aspergillus infections.
Main Methods:
- Review of existing literature on IPA imaging techniques.
- Analysis of computed tomography (CT) and positron emission tomography (PET) with [18F]fluorodeoxyglucose ([18F]FDG) limitations.
- Exploration of novel approaches including bioluminescence imaging, radiolabeled antibodies, and iron siderophores.
- Focus on antibody-guided PET/magnetic resonance imaging (immunoPET/MRI) for Aspergillus detection.
Main Results:
- Traditional methods like CT scans have limitations in specificity for IPA.
- PET-CT with [18F]FDG has shown limited utility in differentiating fungal infections from other conditions.
- Bioluminescence imaging has been effective in animal models for monitoring IPA.
- Radiolabeled Aspergillus-specific antibodies and iron siderophores show significant potential for clinical diagnosis.
- Antibody-guided PET/MRI represents a state-of-the-art approach for molecular imaging of IPA.
Conclusions:
- There is a critical need for improved diagnostic tools for IPA.
- Molecular imaging, particularly immunoPET/MRI, offers a promising avenue for precise in vivo detection of Aspergillus lung infections.
- Further development of these advanced imaging techniques could significantly improve patient outcomes in immunocompromised individuals.
More Related Videos
Related Concept Videos
01:14Imaging Studies I: CT and MRI
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...
02:00Molecular Models
03:51Molecular Orbital Theory II
02:35Molecular Orbital Theory I
02:27Predicting Molecular Geometry
02:54Molecular and Ionic Solids
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...