Paper Info
Title
A 4.9 mΩ-Sensitivity Mobile Electrical Impedance Tomography IC for Early Breast-Cancer Detection System
Abstract
A mobile electrical impedance tomography (EIT) IC is proposed for early breast cancer detection personally at home. To assemble the entire system into a simple brassiere shape, EIT IC is integrated via a multi-layered fabric circuit board which includes 90 EIT electrodes and two reference electrodes for current stimulation and voltage sensing. The IC supports three operating modes; gain scanning, contact impedance monitoring, and EIT modes for the clear EIT image. A differential sinusoidal current stimulator (DSCS) is proposed for injection of low-distortion programmable current which has harmonics less than -59 dBc at a load impedance of 2 kΩ. To get high sensitivity, a 6-channel voltage sensing amplifier can adaptively control the gain up to a maximum of 60 dB, and has low input referred noise, 36 nV/ √Hz. The 2.5 × 5 mm chip is fabricated in a 0.18 μm 1P6M CMOS process and consumes 53.4 mW on average. As a result, a sensitivity of 4.9 mΩ is achieved which enables the detection of a 5 mm cancer mass within an agar test phantom.
Year
DOI
Venue
2015
10.1109/JSSC.2014.2355835
J. Solid-State Circuits
Keywords
DocType
Volume
mammography,cmos integrated circuits,eit ic integration,medical control systems,resistance 4.9 mohm,1p6m cmos,power 53.4 mw,eit electrode,mobile eit ic,low-distortion programmable current injection,eit mode,mobile healthcare,biomedical electrodes,amplifiers,current stimulation,planar-fashionable circuit board (p-fcb),ic operating mode,reference electrode,patient monitoring,gain scanning,differential sinusoidal current stimulator,multi-layered fabric circuit board,low input referred noise,contact impedance sensing,dscs,programmable current harmonics,brassiere shape system,cancer mass detection,load impedance,clear eit image,size 0.18 mum,adaptive control,cancer,mobile electrical impedance tomography ic sensitivity,gain control,agar test phantom,electrical impedance tomography (eit),size 5 mm,contact impedance monitoring,6-channel voltage sensing amplifier,resistance 2 kohm,portable instruments,adaptive gain control,biological tissues,programmable circuits,textile technology,early breast-cancer detection system,chip fabrication,biomedical electronics,phantoms,electric impedance imaging,breast cancer detection,size 2.5 mm,breast cancer,electrodes,integrated circuits,impedance,tomography
Journal
50
Issue
ISSN
Citations 
1
0018-9200
4
PageRank 
References 
Authors
0.56
0
7
Name
Order
Citations
PageRank
Sunjoo Hong1467.87
Kwonjoon Lee2595.78
Unsoo Ha3449.19
Hyunki Kim4243.85
Yongsu Lee5398.50
Youchang Kim66110.17
Hoi-Jun Yoo71574226.79