The current status and further prospects for lung magnetic resonance imaging in pediatric radiology

Area of Science:

• Radiology
• Medical Imaging
• Pulmonology

Background:

• Computed tomography (CT) involves significant radiation exposure, a concern for all patients, particularly children requiring repeated lung imaging.
• Lung imaging is crucial for diagnosing and monitoring various pulmonary conditions, including tumors and chronic diseases like cystic fibrosis.

Purpose of the Study:

• To evaluate the potential of lung Magnetic Resonance Imaging (MRI) to replace conventional CT examinations.
• To discuss factors facilitating the clinical adoption of lung MRI.
• To present key pulmonary findings using MRI through a pictorial essay.

Main Methods:

• Review of established and novel MRI sequences for lung imaging.
• Focus on respiration-triggered T2-weighted turbo spin-echo (TSE) sequences as a standard for pediatric lung imaging.
• Exploration of T1-weighted gradient echo sequences with ultrashort echo time (T1-W UTE) for high-resolution imaging.

Main Results:

• Lung MRI can substitute up to 90% of CT examinations without diagnostic compromise.
• Radiation-free lung MRI significantly reduces individual radiation exposure, crucial for pediatric patients.
• T1-W UTE sequences offer CT-like image quality with high spatial resolution, enabling detailed secondary reconstructions.

Conclusions:

• Lung MRI is a viable, radiation-free alternative to CT for lung diagnostics, especially in pediatric populations.
• Respiration-triggered T2-W TSE sequences are a reliable standard for pediatric lung MRI.
• Advanced sequences like T1-W UTE provide high-resolution imaging, expanding MRI's utility in pulmonary diagnostics.