4
This symbol means the device is MR Conditional.
Non-clinical testing has demonstrated that the Resonance® Metallic Ureteral
Stent is MR Conditional. It can be scanned safely under the following conditions:
At 1.5 Tesla Static Magnetic Field
At 3 Tesla Static Magnetic Field
• Spatial gradient field of
450 Gauss/cm or less; and
• Spatial gradient field of
720 Gauss/cm or less; and
• Maximum whole-body-averaged
specific absorption rate (SAR) of
1.5 W/kg for 20 min. of scanning
• Maximum whole-body-averaged
specific absorption rate (SAR) of
3 W/kg for 15 min. of scanning
In non-clinical testing the stent
produced a temperature rise during
scanning of less than 0.80 ˚C at an
SAR of 1.5 W/kg for 20 min.
In non-clinical testing the stent
produced a temperature rise during
scanning of less than 1.3 ˚C at an
SAR of 3 W/kg for 15 min.
Note: MR image quality may be compromised if the area of interest is in the same
area or relatively close to the position of the stent. The image artifact extends
approximately 16 mm from the device when scanned in non clinical testing using:
GRE sequence in a 3.0 Tesla Siemens Magnetom Trio, A Tim System (Software
Numaris/4) with the body coil. Therefore it may be necessary to optimize MR imaging
parameters for the presence of this metallic implant.
POTENTIAL ADVERSE EVENTS
Potential adverse events associated with indwelling ureteral stents include:
• Diminished urine drainage / stent occlusion
• Fistula formation including Arterioureteral Fistula
• Hemorrhage
• Hydronephrosis
Содержание Resonance Series
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