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Reduction of magnetic resonance imaging-related heating in deep brain stimulation leads using a lead management device.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Baker, Kenneth B. Tkach, Jean A. Hall, John D. Nyenhuis, John A. Shellock, Frank G. Rezai, Ali R. |
| Copyright Year | 2005 |
| Abstract | OBJECTIVE To evaluate the ability of a lead management device to reduce magnetic resonance imaging (MRI)-related heating of deep brain stimulation (DBS) leads and thereby to decrease the risks of exposing patients with these implants to MRI procedures. METHODS Experiments were performed using the Activa series (Medtronic, Inc., Minneapolis, MN) DBS systems in an in vitro, gelled-saline head and torso phantom. Temperature change was recorded using fluoroptic thermometry during MRI performed using a transmit-and-receive radiofrequency body coil at 1.5 T and a transmit-and-receive radiofrequency head coil at 3 T. A cranial model placed in the phantom was used to test a custom-designed burr hole device that permitted the placement of small-diameter, concentric loops around the burr hole at the DBS lead as it exited the cranium. RESULTS A total of 41 scans were performed, with absolute temperature changes ranging from 0.8 to 10.3 degrees C. Depending on the MRI system tested and the side of the phantom on which the hardware was placed, loop placement resulted in reductions in temperature rise of 41 to 74%. The effect was linearly related to the number of loops formed (P < 0.01) over the range tested (0-2.75 loops). CONCLUSION Small, concentric loops placed around the burr hole seem to reduce MRI-related heating for these implants. Although the mechanism is still not fully understood, a device such as that used in the present study could permit a wider range of clinical scanning sequences to be used at 1.5 and 3 T in patients with DBS implants, in addition to increasing the margin of safety for the patient. |
| File Format | PDF HTM / HTML |
| DOI | 10.1227/01.NEU.0000176877.26994.0C |
| PubMed reference number | 16234691 |
| Journal | Medline |
| Volume Number | 57 |
| Issue Number | 4 |
| Alternate Webpage(s) | http://www.imrser.org/PDF/Baker.Loops.Neurosurgery.2005.pdf |
| Alternate Webpage(s) | https://doi.org/10.1227/01.NEU.0000176877.26994.0C |
| Journal | Neurosurgery |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
