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Syringe infusion pumps designed for use in delivering relatively small volumes of liquid medications and other solutions through intravenous (IV), epidural, and subcutaneous routes at pre-established accurate flow rates (e.g., down to 0.1 ml/hour). These devices are capable of working in high intensity magnetic fields such as those present during magnetic resonance imaging (MRI) procedures without introducing hazardous conditions or producing artifacts in the MRI images. MRI-safe infusion pumps do not have ferromagnetic parts or produce radiofrequency interference; conditional-safe pumps may be safe up to a certain magnetic intensity value (e.g., up to 3 Tesla) or in certain locations of the suite depending on gauss line locations, but cannot be identified as having no ferromagnetic parts. These pumps usually consist of a syringe, a motor that drives a screw or gear mechanism that is not affected by magnetic fields (e.g., constructed with non-ferromagnetic metals) which advances either the plunger or barrel of the syringe at a predetermined rate. They also have electronic controls used to select the dose or volume to be infused, and audible and/or visual alarms to indicate abnormal conditions. In most pumps the syringe containing the infusate must be manually replaced once it has emptied to continue the infusion. MRI-compatible syringe infusion pumps are especially appropriate for delivery of small volumes of concentrated drugs. Some syringe pumps (known as \'smart pumps\') include software capable of detecting medication administration errors (i.e., dose error reduction systems) are also available. MRI-compatible syringe multitherapy infusion pumps are usually intended for IV pole mounting and/or to be placed on tabletops; they are used mainly in MRI procedure areas in hospitals and other healthcare facilities.
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