Table 1 Comparison of characteristics of brain imaging technologies
From: Advances in electrical impedance tomography-based brain imaging
Technique | Mechanism of operation | Cost | Wearable | Operability | Side effects | Precision |
|---|---|---|---|---|---|---|
EIT | Electrical impedance in tissue | Low | Yes | Maneuverable | No | Low |
fcPAT | Optical excitation and acoustic detection | Low | Yes | Maneuverable | No | High |
EEG | Electrical activity of brain cells | Low | Yes | Maneuverable | No | Low |
X-ray | Low energy X-rays | Moderate | No | Professional | Radiation | Moderate |
CT | X-rays, computer processing and conversion | High | No | Professional | Radiation | High |
MRI | Magnetic field and pulsating radio waves | High | No | Professional | Time-consuming | High |
PET | Gamma rays emitted by tracer substance | High | No | Professional | Radiation | Moderate |