Lung imaging: how to get better look inside the lung

Area of Science:

• Medical Imaging
• Pulmonology
• Critical Care Medicine

Background:

• Imaging is vital for diagnosing and monitoring critical illnesses like acute respiratory distress syndrome (ARDS).
• Conventional techniques include Chest X-ray (CXR) and Computed Tomography (CT), with CT being the gold standard for assessing lung aeration in ARDS.
• Emerging bedside techniques like Lung Ultrasound (LUS) and Electrical Impedance Tomography (EIT) offer non-invasive, radiation-free alternatives.

Purpose of the Study:

• To provide an updated overview of imaging techniques for ARDS diagnosis and management.
• To discuss both conventional and novel imaging modalities.
• To highlight the role of imaging in understanding ARDS pathophysiology.

Main Methods:

• Review of conventional imaging techniques (CXR, CT).
• Evaluation of emerging bedside techniques (LUS, EIT).
• Inclusion of advanced functional imaging (PET, MRI) for research applications.

Main Results:

• CT is the gold standard for ARDS lung aeration assessment.
• LUS and EIT are gaining popularity as non-invasive, radiation-free alternatives.
• PET and MRI provide functional insights into ARDS pathophysiology.

Conclusions:

• A comprehensive range of imaging techniques, from conventional to novel, aids in ARDS diagnosis and management.
• Bedside imaging modalities like LUS and EIT are increasingly important complements or substitutes for traditional methods.
• Advanced imaging research, including PET and MRI, enhances understanding of ARDS mechanisms.