We present an apparatus for PNS threshold determination on a subject's limb, capable of narrow and broad-band magnetic excitation with pulse characteristic times down to 40 us. From measurements on 51 volunteers, we observe that PNS limits coincide for sinusoidal and triangular excitations, and are slightly lower for trapezoidal pulses. We measure significant correlations of PNS sensitivity with arm size and body weight, and none with height or gender. We confirm thresholds increase significantly for short trains also in these fast timescales. Finally, we propose our versatile low-cost system for fast offline determination of a subject's limits prior to scanning.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords