Composing / Image Stitching Artifact

MRI composing, also known as image stitching, is a technique used to combine multiple MRI images into a single larger image. This technique is often employed when imaging large anatomical regions or when a high-resolution image is required. However, like any imaging technique, MRI composing can be prone to artifacts, including image stitching artifacts.

Image stitching artifacts in MRI composing refer to visual inconsistencies or errors that occur at the boundaries where the individual images are merged together. These artifacts can arise due to several reasons:

• Motion artifacts: Patients may move between the acquisition of individual images, resulting in misalignment. This misalignment can cause visible seams or distortions at the boundaries.

• Inhomogeneity artifacts: MRI scanners may have variations in the magnetic field strength or sensitivity across the imaging volume. These variations can lead to intensity differences at the boundaries of stitched images.

• Intensity variations: There may be variations in image intensity, such as variations in signal-to-noise ratio, contrast, or brightness, between the individual images. When stitching these images together, these intensity differences can create visible artifacts.

• Geometric distortions: MRI images can be susceptible to geometric distortions caused by factors such as magnetic field inhomogeneities or susceptibility effects. These distortions can affect the accurate alignment of images during the stitching process.