Most orthopedic implants and materials do not pose problems for patients undergoing MRI procedures. MRI may be hazardous for external fixation systems, however, because of the length of the implant or the formation of a conductive loop.
More »A drainage implant or device, also known as a tube shunt, is implanted in the sclera of patients with glaucoma to maintain an artificial drainage pathway and control intraocular pressure. Intraocular pressure is lowered when aqueous humor flows from inside the eye through the tube into the space...
More »Patients with coronary artery disease are often treated by percutaneous transluminal coronary angioplasty (PTCA). Renarrowing at the angioplasty site, or restenosis, occurs in as many as 50% of patients following PTCA. Therefore, after coronary artery intervention, either a bare metal or...
More »Studies have been limited of low-molecular-weight water-soluble extracellular substances such as gadolinium-based contrast agents used in MR imaging of pregnant patients. Effects on the human embryo or fetus are unknown.
More »Hydrocephalus is the accumulation of cerebrospinal fluid in the brain, resulting from increased production or, more commonly, pathway obstruction or decreased absorption of the fluid. CSF shunts have been used for decades for the treatment of hydrocephalus. CSF shunting involves establishing an...
More »The 9526 Reveal Plus Insertable Loop Recorder (ILR, Medtronic, Minneapolis) is an implantable single-use programmable device containing two surface electrodes for continuous recording of the patient's subcutaneous electrocardiogram.
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