Cook’s interventional MReye Needles are used for initial puncture and positioning control as well as biopsies and other interventional procedures in combination with Magnetic Resonance Imaging.

• MReye products are created from a nonferromagnetic material that helps prevent disturbing artifacts.
• MReye needles are recommended for use with MRI scanners not exceeding 1.5 tesla.

To see different-sized images of the needle, try these scanner parameters:

• To see an image of the needle at a ratio of 1:1, select a spin echo sequence (TR/TE 200 ms/15 ms).
• To see an image of the needle enlarged approximately 2:1, select a gradient echo sequence (TR/TE/Flip angle 336 ms/15 ms/90°).

Nonclinical testing demonstrated that the Vital-Port Vascular Access Ports are MR Conditional. A patient with one of these implants can be safely scanned immediately after placement under the following conditions:

• Static magnetic field of 3.0 tesla or less
• Maximum spatial gradient magnetic field of 720 gauss/cm
• Maximum MR system reported whole-body averaged specific absorption rate (SAR) of 3 W/kg for 15 minutes of scanning

In nonclinical testing, the vascular access ports produced maximum temperature increases of less than or equal to 0.7°C at maximum MR system reported whole-body averaged specific absorption rate (SAR) of 3 W/kg for 15 minutes of MR scanning in a 3 tesla MR system using a transmit/receive body coil (Excite, software G3.0-052B, GE Healthcare, Milwaukee, WI).

MR image quality may be compromised if the area of interest is in the same area or relatively close to the position of the vascular access ports. Therefore, it may be necessary to optimize MR imaging parameters to compensate for the presence of one of these implants.