Magnetic Resonance Imaging (MRI)

A medical imaging technique that uses strong magnetic fields and radio waves to generate detailed images of the internal structures of the body, particularly soft tissues like organs, muscles, and the brain.

 

Radiofrequency (RF) Coil

A device used in MRI that generates and receives radiofrequency signals to transmit energy into the body and detect the resulting signals emitted by tissues.

 

Gradient Coils

Coils within the MRI scanner that produce varying magnetic field strengths across the imaging area, enabling spatial encoding and localization of signals to generate high-resolution images.

 

T1-weighted Imaging

MRI sequences that emphasize differences in the relaxation times of tissues, providing good contrast between different tissue types, such as between fat and water.

 

T2-weighted Imaging

MRI sequences that highlight differences in the transverse relaxation times of tissues, enhancing contrast between different types of soft tissues, such as between fluid-filled spaces and solid tissues.

 

MRI Contrast Agents

Substances administered intravenously to enhance the visibility of certain tissues or abnormalities in MRI images, often containing gadolinium or manganese.

 

MRI Scanner

The machine used to perform MRI scans, which consists of a strong magnet, gradient coils, radiofrequency coils, and a computer system to generate images.

 

MRI Safety

Protocols and guidelines to ensure the safety of patients, staff, and equipment during MRI procedures, including screening for contraindications such as implanted devices or metallic objects.

 

Functional MRI (fMRI)

A specialized MRI technique used to measure and map brain activity by detecting changes in blood flow, providing insights into brain function and connectivity.

 

MRI Artifact

Any unwanted distortion or anomaly in MRI images that can arise from various sources such as patient motion, equipment malfunction, or physiological effects, potentially affecting image quality and diagnostic accuracy.