What technology is used to address motion artefacts in MRI imaging?

Blade sequences are specifically designed to minimize motion artefacts during MRI imaging. This technology incorporates a unique approach to data acquisition, where the sequence is divided into blades that can be rotated or repositioned relative to the patient. This rotational aspect allows for better handling of any movement, whether it be involuntary movements of the patient or breathing, thereby resulting in clearer and more accurate images.

The other options, while they may involve some aspects of MRI technology, do not directly address the challenge of motion artefacts as effectively. Temperature-controlled scanners are typically used in other contexts like thermal stability in certain imaging sequences but do not specifically counteract motion during scans. Image averaging techniques can help improve image quality by combining multiple images, but they do not directly address the immediate issue of motion during the acquisition of individual frames. Dynamic field mapping is related to correcting inhomogeneities in the magnetic field, which can affect image quality, but it does not directly target motion artefacts in the same efficient manner as blade sequences do.