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A resistive heating system for homeothermic maintenance in small animals.

Kersemans V, Gilchrist S, Allen PD, Beech JS, Kinchesh P, Vojnovic B, Smart SC - Magn Reson Imaging (2015)

Bottom Line: Fat-suppressed images and localized spectra were acquired with the twisted pair heater and a near-identical single strand heater during operation at maximum power.The efficacy of temperature maintenance was examined by measuring rectal temperature immediately following induction of general anesthesia and throughout and after the acquisition of a heater artifact-prone image series.The twisted pair wire heater does not interfere with MR image quality and maintains adequate thermal input to the animal to maintain body temperature.

View Article: PubMed Central - PubMed

Affiliation: Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Off Roosevelt Drive, OX3-7DQ, Oxford, United Kingdom. Electronic address: Veerle.Kersemans@oncology.ox.ac.uk.

No MeSH data available.


Related in: MedlinePlus

MR-compatibility of the resistive heater. Fat-suppressed gradient echo imaging (top) and PRESS localized spectroscopy (bottom) performed with:A. Twisted pair heater wire and maximum current.B. Single strand heater wire and maximum current.C. No heater wire current.Top left. Reference image without fat suppression.Bottom left. Voxel plan for localized spectroscopy.⁎Residual motion artifacts due to absence of cardiac synchronization.
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f0015: MR-compatibility of the resistive heater. Fat-suppressed gradient echo imaging (top) and PRESS localized spectroscopy (bottom) performed with:A. Twisted pair heater wire and maximum current.B. Single strand heater wire and maximum current.C. No heater wire current.Top left. Reference image without fat suppression.Bottom left. Voxel plan for localized spectroscopy.⁎Residual motion artifacts due to absence of cardiac synchronization.

Mentions: The use of the tightly wound twisted pair wire resulted in sufficient cancellation of induced magnetic fields arising from passage of current through the wire. Fig. 3 compares fat-suppressed imaging and localized spectroscopy performed in a mouse with different heating wire arrangements. Data were acquired with twisted pair heater wire and maximum current (A), single strand heater wire and maximum current (B), and without heater wire current (C). Temperature maintenance using the twisted pair heater wire traverses between states A and C in response to the temperature of the animal. Temperature maintenance using a traditional single strand heater wire traverses between states B and C.


A resistive heating system for homeothermic maintenance in small animals.

Kersemans V, Gilchrist S, Allen PD, Beech JS, Kinchesh P, Vojnovic B, Smart SC - Magn Reson Imaging (2015)

MR-compatibility of the resistive heater. Fat-suppressed gradient echo imaging (top) and PRESS localized spectroscopy (bottom) performed with:A. Twisted pair heater wire and maximum current.B. Single strand heater wire and maximum current.C. No heater wire current.Top left. Reference image without fat suppression.Bottom left. Voxel plan for localized spectroscopy.⁎Residual motion artifacts due to absence of cardiac synchronization.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4462590&req=5

f0015: MR-compatibility of the resistive heater. Fat-suppressed gradient echo imaging (top) and PRESS localized spectroscopy (bottom) performed with:A. Twisted pair heater wire and maximum current.B. Single strand heater wire and maximum current.C. No heater wire current.Top left. Reference image without fat suppression.Bottom left. Voxel plan for localized spectroscopy.⁎Residual motion artifacts due to absence of cardiac synchronization.
Mentions: The use of the tightly wound twisted pair wire resulted in sufficient cancellation of induced magnetic fields arising from passage of current through the wire. Fig. 3 compares fat-suppressed imaging and localized spectroscopy performed in a mouse with different heating wire arrangements. Data were acquired with twisted pair heater wire and maximum current (A), single strand heater wire and maximum current (B), and without heater wire current (C). Temperature maintenance using the twisted pair heater wire traverses between states A and C in response to the temperature of the animal. Temperature maintenance using a traditional single strand heater wire traverses between states B and C.

Bottom Line: Fat-suppressed images and localized spectra were acquired with the twisted pair heater and a near-identical single strand heater during operation at maximum power.The efficacy of temperature maintenance was examined by measuring rectal temperature immediately following induction of general anesthesia and throughout and after the acquisition of a heater artifact-prone image series.The twisted pair wire heater does not interfere with MR image quality and maintains adequate thermal input to the animal to maintain body temperature.

View Article: PubMed Central - PubMed

Affiliation: Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Off Roosevelt Drive, OX3-7DQ, Oxford, United Kingdom. Electronic address: Veerle.Kersemans@oncology.ox.ac.uk.

No MeSH data available.


Related in: MedlinePlus