| 摘要 |
For the purposes of improving stability of an RF system, improving efficiency of cooling, and fully retaining an examination region in an MRI apparatus, a lower first-direction RF coil 21 and an upper first-direction RF coil 23 are connected to form a first-direction electromagnetic wave transmitting/receiving section 20, and a lower second-direction RF coil 31 and an upper second-direction RF coil 33 are connected to form a second-direction electromagnetic wave transmitting/receiving section 30, so that the phase of electromagnetic waves in two orthogonal directions is controlled by a 2-channel phase control section 6. Moreover, coil elements for the RF coils are disposed inside an examination region, control devices are disposed outside the examination region 10, and cooling sections 7 and 8 are disposed near the control devices.
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