Current Density Imaging Using Directly Measured Harmonic 𝐵_𝑧 Data in MREIT

Table 2

Noise level estimation of the recovered ∇^∼2𝐵^avrg_𝑧 and ∇^∼2𝐵^opt_𝑧, by calculating (22).

	∇^∼2𝐵^avrg𝑧=(1/𝑁𝐸)∑^𝑁𝐸∼ℓ=1∇^2𝐵^ℓ𝑧	∇^∼2𝐵^opt𝑧=∑^𝑁𝐸ℓ=1𝜔∇^ℓ∼2𝐵^ℓ𝑧
Err2	145.1	41.5