ADC	Analog-to-Digital Converter
DAC	Digital-to-Analog Converter
DDS	Direct Digital Synthesizer
DFT	Discrete Fourier Transform
EIS	Electrical Impedance Spectroscopy
EIT	Electrical Impedance Tomography
FDM	Frequency-Division Multiplexing
FPGA	Field-Programmable Gate Array
MF-EIT	Multi-Frequency Electrical Impedance Tomography
ONE-SHOT	ONe Excitation for Simultaneous High-speed Operation Tomography
ROI	Region of Interest
SNR	Signal-to-Noise Ratio
$\widehat{e_k}$	Unit vector in the base
$\overrightarrow{E}$	Linear superposition of excitations $\overrightarrow{E_k}$, k = 1, 2, …, 6
$\overrightarrow{E_k}$	kth excitation in the projection set
${\varphi }^{AC}$	Phase of AC excitation
$f^{AC}$	Frequency of AC excitation
$f_i^{AC}$	AC frequency for the ith excitation in the projection set
$f_s$	Samping frequency (ADC and DAC)
$N_e$	Number of electrodes
$N_f$	Distinct frequencies usable in the DFT
$N_p$	Number of excitations in the projection set
$N_s$	Number of samples per channel
$P^{SET}$	Projection set
${ℛ}^{N_p}$	Base of independant excitations for a projection set with $N_p$ elements
$R_i$	Value of the ith resistor of the mock-up
$R_s$	Sensing resistor(s)
$U_i$	Voltage drop measurement across the ith sense resistor
$\overrightarrow{V}$	Set of excitation voltages set at the electrodes
$V_{AC}$	Waveform of AC excitation signals
$V^{AC}$	Amplitude of AC excitation
$V_i$	Excitation voltage set at the ith electrode