| 摘要 |
2094714 9208145 PCTABS00013 An RF resonator for use in NMR is mounted on a dielectric support sufficiently large to permit insertion of a patient's head. The resonator consists of four axially distributed high frequency ring current paths (56, 58, 59, 60) on the support (40) and at least four high frequency current paths (50) interconnect each pair of adjacent ring paths. In the preferred embodiment at least sixteen equally spaced parallel segments (50) connect each ring pair and are aligned with one another. The ring segments between the parallel segments together with the parallel segments form loops. At least one discrete capacitor (62, 64) is placed in each outer current loop thereby interrupting the loop. However, this is done so that no inner loop is interrupted by a capacitor. Therefor, each inner loop has effectively no capacitance and is now resonant at radio frequencies.
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