MISREGISTRATION ARTIFACT MEANING SOFTWARE
MISREGISTRATION ARTIFACT MEANING SERIES

Identification of artifact type and etiology is important in developing reliable scanning protocols, pulse sequences and data processing algorithms. Below we will discuss the most common types of artifacts, their causes and correction methods.

Typical artifact correction methods are: improvement of technical equipment, optimization of scanning parameters and pulse sequences and image processing after the scanning procedures.

MISREGISTRATION ARTIFACT MEANING SERIES

As a result, series of corrective procedures was developed in order to eliminate or to reduce artifacts. Though a few of artifacts can be avoided by using an appropriate scanning techniques even customized scanning protocols with well-maintained and calibrated systems will not prevent all of them. Often, several different kinds of artifacts occur only in single image or sequence.

They arise because of the breach of one or more imaging principles of assumptions.

Like any other type of diagnostic imaging, MRI is also susceptible to artifacts. MRI signal is generated by a strong magnetic field which is committed by superconducting coil, one or more radiofrequency fields and several weaker magnetic fields generated by the three gradient coils combinations. Probably the most important thing is that MRI does not involve the use of ionizing radiation, its safe for continuous comparable investigation. Both two-dimensional (2D) and three-dimensional (3D) images can be formed without image orientation restrictions. The examination has a huge possibility in choosing the imaging settings: tissue contrast, image resolution and anatomical coverage may be optimized for a specific use. Consequently, of its unique sensitivity spectrum of physiological and biological parameters such as flow, chemical composition and molecular configuration MRI is also suitable for functional and metabolic studies. MRI used for nervous, muscle-skeletal system, cardiovascular and other systems clinical investigation because of good soft tissue contrast and high spatial resolution. Since MRI is sensitive to the chemical surroundings of the atomic nuclei within the body, the images have excellent contrast between different soft-tissues. MRI has become a powerful and widely accessible imaging type in diagnostic radiology. Since 1973, when Paul Lauterbur extracted the first Magnetic Resonance Image (MRI), this technology has greatly advanced. Keywords: artifact, magnetic resonance imaging, chemical shift, susceptibility, slice overlap, black boundary.ġ. We also provide the original artifacts images and statistics from the Lithuanian University of Health Sciences Kaunas Clinical Hospital, Dept of Radiology, mainly obtained from image databases and some images from data base of other Lithuanian hospitals. We presented an overview of the most common MRI artifacts and methods to fix or rectify them. It is important to recognize these artifacts according to a basic understanding of their origin, especially those mimicking pathology, as they can lead to incorrect diagnosis and cause serious after-effects on patient’s health and outcomes. On another word artifact as an artificial feature appearing in an image that is not present in the original investigative object. Some of them can seriously affecting diagnostic image quality, while others may simulate or be confused with different pathology.

MISREGISTRATION ARTIFACT MEANING SOFTWARE

Different kinds of artifacts can occur during a magnetic resonance imaging (MRI) scans due to hardware or software related problems, human physiologic phenomenon or physical restrictions.

Misregistration artifact meaning