Table 1.

Results of heating tests of the needle shims at a position 15 cm right of isocenter in two orientations, perpendicular to B₀ (0,0,0 degrees) and parallel to B₀ ( 0,−90,0 degrees) (A) With shim insert inside needle (B) Only shim insert, without the needle, (C): In-scanner Reference with no needle or shim insert, (D) On the bench, outside the scanner with temperature probes directly on shim coils and the shim insert immersed vertically at the center of the phantom.

A. Temperature Rise in °Celsius With Needle (Probes on Needle Surface)
Angle		3D FSE							Continuous 2D SSFP
		No Current		1A in CN0		1A in CN90			No Current		1 A in CN0		1 A in CN90
		P1	P2	P1	P2	P1	P2		P1	P2	P1	P2	P1	P2
0,0,0. (Perpendicular to B0)		1.50	0.30	1.60	0.50	1.50	0.76		0.60	0.30	0.80	0.60	0.90	0.70
0, −90,0. (Parallel to B0)		1.90	0.90	2.79	1.47	2.00	1.00		1.17	0.51	1.40	0.79	1.34	0.63
B. Temperature Rise in °Celsius Without Needle (Probes on shim coils directly)
Position	Angle	3D FSE							Continuous 2D SSFP
		No Current		1A in CN0		1A in CN90			No Current		1 A in CN0		1 A in CN90
		P1	P2	P1	P2	P1	P2		P1	P2	P1	P2	P1	P2
0,0,0. (Perpendicular to B0)		1.67	1.74	2.34	2.60	2.20	2.49		1.63	1.29	1.9	1.46	1.76	1.60
0, −90,0. (Parallel to B0)		1.44	0.43	2.34	1.24	2.04	0.76		1.14	0.36	1.70	0.6	1.51	0.70
		C. in-scanner Reference No needle or shim Insert, No Current P1 at center, P2 at off-center position							D. Phantom On Bench Reference Probes on shim coils.
		3D FSE			2D SSFP				1 A in CN0			1 A in CN90
		P1		P2	P1		P2		P1		P2	P1		P2
		0.20		1.11	0.20		0.39		0.21		0.23	0.27		0.40