Interventional MRI: tapering improves the distal sensitivity of the loopless antenna.
Interventional MRI: tapering improves the distal sensitivity of the loopless antenna.
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DOI:
10.1002/mrm.22152
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发表时间:
2010-03
影响因子:
3.3
通讯作者:
Bottomley, Paul A.
中科院分区:
文献类型:
--
作者:
Qian, Di;El-Sharkawy, AbdEl-Monem M.;Atalar, Ergin;Bottomley, Paul A.
MethodsThe loopless antennae are formed from 2.2 mm diameter UT-85-C cable with an 0.5 mm inner conductor whip, and cable dielectric ε= 2.2. The whips of two antennae are insulated with ε= 3 polyethylene (PET) heat-shrink tubing: one with a standard uniformly thick 0.5 mm layer, the other with a tapered layer of 1mm at the junction decreasing linearly from 1mm at the junction to 0.025 mm at the tip. The third is left un-insulated. The sample is a 0.35% bio-analogous saline phantom with conductivity σ= 0.63 S/m and ε= 80.
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影响因子:
3.3
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通讯作者:
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