What is the default frequency encoding direction for an axial image of the brain?

The default frequency encoding direction for an axial image of the brain is typically from anterior to posterior. This choice aligns with the standard practice in MRI imaging, where the frequency encoding is often set in a direction that corresponds to the patient's anatomical orientation. In an axial view of the brain, this means that the image is constructed from data collected in a direction that runs from the front of the head to the back, which provides a clear representation of the brain's structure.

When imaging the brain, understanding the frequency encoding direction is crucial, as it can affect the interpretation of the image and the overall image quality. Axial slices are commonly used in brain imaging, and setting the frequency encoding from anterior to posterior allows for better visualization of structures that are oriented in this plane, facilitating accurate diagnosis and assessment.