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AssigneeKoninklijke Philips Electronics N.V.
InventorsDirk Sinnema, Johan Vrijheid
Estimating the term…
In a medical MRI apparatus, it is often desirable to have devices 62, 64 for communicating with or monitoring the patient 58 in the imaging volume 29 of the apparatus. Such devices need DC power or low-frequency connections with an area 70 outside the imaging volume. A device cable that does not interfere with the MRI magnetic fields is known per se. The invention proposes to fix the device cable in a groove 76 in the patient carrier 60 in such a manner that its strip-shaped conductors 78, 80 extend parallel to the field lines of the stationary field B of the apparatus. In this way, it is also possible to clip device carriers 72, 74 to the groove, thus supplying the devices with DC power or establishing an audio connection through the device cable in the groove.
A medical MRI apparatus provided with a patient table having an elongated patient carrier the longitudinal direction of which, if said patient carrier is placed in the imaging volume of the MRI apparatus, coincides with the direction of the stationary magnetic field b in the imaging volume, which medical MRI apparatus is provided with at least one device cable for low-frequency electric conduction, which device cable comprises mutually separated segments which are each shorter than a predetermined value, and wherein the segments are separated from each other by frequency-dependent separation elements forming a conductor for low-frequency currents and an insulator for radio-frequency alternating current, characterized in that the device cable is rigidly connected throughout its length to the patient carrier and extends in the longitudinal direction of the patient carrier, and in that the device cable is embodied so as to be capable of being branched off:
Dependencies are inferred from the claim text.