TY - JOUR
T1 - Anomaly detection using electric impedance tomography based on real and imaginary images
AU - Sapuan, Imam
AU - Yasin, Moh
AU - Ain, Khusnul
AU - Apsari, Retna
N1 - Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2020/4/1
Y1 - 2020/4/1
N2 - This research offers a method for separating the components of tissue impedance, namelyresistance and capacitive reactance. Two objects that have similar impedance or low contrast can be improved through separating the real and imaginary images. This method requires an Electrical Impedance Tomography (EIT) device. EIT can obtain potential data and the phase angle between the current and the potential measured. In the future, the device is very suitable for imaging organs in the thorax and abdomen that have the same impedance but different resistance and capacitive reactance. This device consists of programmable generators, Voltage Controlled Current Source (VCCS), mulptiplexer-demultiplexer potential meters, and phase meters. Data collecting was done by employing neighboring, while reconstruction was used the linear back-projection method from two different data frequencies, namely 10 kHz and 100 kHz. Phantom used in this experiment consists of distillated water and a carrot as an anomaly. Potential and phase data from the device is reconstructed to produce impedance, real, and imaginary images. Image analysis is performed by comparing the three images to the phantom. The experimental results show that the device is reliable.
AB - This research offers a method for separating the components of tissue impedance, namelyresistance and capacitive reactance. Two objects that have similar impedance or low contrast can be improved through separating the real and imaginary images. This method requires an Electrical Impedance Tomography (EIT) device. EIT can obtain potential data and the phase angle between the current and the potential measured. In the future, the device is very suitable for imaging organs in the thorax and abdomen that have the same impedance but different resistance and capacitive reactance. This device consists of programmable generators, Voltage Controlled Current Source (VCCS), mulptiplexer-demultiplexer potential meters, and phase meters. Data collecting was done by employing neighboring, while reconstruction was used the linear back-projection method from two different data frequencies, namely 10 kHz and 100 kHz. Phantom used in this experiment consists of distillated water and a carrot as an anomaly. Potential and phase data from the device is reconstructed to produce impedance, real, and imaginary images. Image analysis is performed by comparing the three images to the phantom. The experimental results show that the device is reliable.
KW - Detection of anomaly
KW - Electrical Impedance Tomography
KW - Real and imaginary image
KW - Resistive and capacitive image
UR - http://www.scopus.com/inward/record.url?scp=85082791732&partnerID=8YFLogxK
U2 - 10.3390/s20071907
DO - 10.3390/s20071907
M3 - Article
C2 - 32235454
AN - SCOPUS:85082791732
SN - 1424-8220
VL - 20
JO - Sensors
JF - Sensors
IS - 7
M1 - 1907
ER -