![]() ![]() © 2011 Veterinary Radiology & Ultrasound. Susceptibility artifacts were present in 99/754 (13.1) of MR imaging studies and were most common in examinations of the brachial plexus, thorax, and cervical spine. Three studies were nondiagnostic due to the susceptibility artifact. Comparison of X-ray fluoroscopy and interventional magnetic resonance imaging for the assessment of coronary artery stenoses in swine. Donated human hearts, either non-transplantable (ranging from. Artifacts were caused by identification microchips, ballistic fragments, skin staples/suture material, hemoclips, an ameroid constrictor, and surgical hardware. The ameroid constrictor used in this study (see Table of Materials) is a much more streamlined version, which has the same outer diameter as the metal ameroids. A major challenge of preclinical testing is to establish clinically relevant models for myocar-dial failure and infarction 3. Susceptibility artifacts were present in 99/754 (13.1%) of MR imaging studies and were most common in examinations of the brachial plexus, thorax, and cervical spine. Medical records were evaluated retrospectively to identify adverse effects. Severity of artifacts was graded as 0 (no interference with area of interest), 1 (extension of artifact to area of interest without impairment of diagnostic quality), 2 (impairment of diagnostic quality but diagnosis still possible), or 3 (severe involvement of area of interest resulting in nondiagnostic study). Studies were performed using a 1.0 T scanner. MR imaging studies performed in dogs and cats between April 2008 and March 2010 were evaluated retrospectively for the presence of susceptibility artifacts associated with metallic foreign bodies. Our purpose was to investigate prevalence, underlying cause, and diagnostic implications of susceptibility artifacts in small animal MR imaging and report associated adverse effects. ![]() Additionally, migration of metallic objects may pose a risk to patients undergoing MR imaging. Susceptibility artifacts due to metallic foreign bodies may interfere with interpretation of magnetic resonance (MR) imaging studies. ![]()
0 Comments
Leave a Reply. |