US 12,339,337 B2
Pseudo-birdcage coil with variable tuning and applications thereof
Aleksandar Nacev, San Francisco, CA (US); and Jose Miguel Algarin Guisado, Oakland, CA (US)
Assigned to Promaxo, Inc., Oakland, CA (US)
Filed by Promaxo, Inc., Oakland, CA (US)
Filed on Apr. 24, 2023, as Appl. No. 18/138,693.
Application 18/138,693 is a continuation of application No. 17/310,698, granted, now 11,656,303, previously published as PCT/US2020/019524, filed on Feb. 24, 2020.
Claims priority of provisional application 62/809,503, filed on Feb. 22, 2019.
Prior Publication US 2024/0118358 A1, Apr. 11, 2024
Int. Cl. G01R 33/34 (2006.01)
CPC G01R 33/34076 (2013.01) [G01R 33/3403 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic imaging apparatus comprising:
a power source for providing a current; and
a coil electrically connected to the power source, the coil comprising a first ring and a second ring,
wherein the first ring has a smaller diameter than the second ring,
wherein the power source is configured to flow current through the coil to generate an electromagnetic field outside of a region enclosed by the coil in a region of interest,
wherein the first ring is spaced farther from the region of interest than the second ring,
wherein the region of interest is outside of the region enclosed by the coil, and
wherein a magnetic resonance image is generated based on the region of interest.