Understanding MRI: basic MR physics for physicians

Area of Science:

• Medical Imaging Physics
• Radiology
• Neuroradiology

Background:

• Increasing trend of hospital clinicians reviewing Magnetic Resonance Imaging (MRI) studies before formal radiological consultation.
• Drivers include high service demand, Picture Archiving and Communication System (PACS) availability, time-sensitive treatments (e.g., acute stroke), and clinician educational desire.
• Essential for clinicians to grasp fundamental MRI physics for accurate image interpretation.

Purpose of the Study:

• To describe the basic physical principles of MRI for general hospital physicians.
• To provide an overview of MRI machinery, contrast weighting, and echo techniques.
• To highlight pertinent safety considerations in MRI.

Main Methods:

• Exposition of fundamental MRI physics principles.
• Discussion of MRI hardware and image acquisition techniques (spin-echo, gradient-echo).
• Inclusion of contrast weighting and safety aspects.

Main Results:

• Provides a foundational understanding of MRI physics relevant to image interpretation.
• Covers essential components from machinery to advanced techniques.
• Emphasizes safety considerations in clinical practice.

Conclusions:

• Basic knowledge of MRI physics empowers clinicians in image interpretation.
• The article serves as a guide for non-radiologists, particularly in neuroradiology.
• Facilitates informed clinical decision-making by bridging the gap between imaging acquisition and interpretation.