A Study of Magnetic Induction Tomography (MIT) for Calcium Oxalate Renal Screening

Abstract

Nephrolithiasis is a process of stone formation in the kidney by crystallization. The increasing prevalence of nephrolithiasis from time to time had sought an alternative from the conventional imaging techniques that is invasive, radiative, and non-rapid usage. This paper enclosed a design simulation study of Magnetic Induction Tomography (MIT) system using COMSOL Multiphysics for renal imaging. MIT is a soft field tomography and non-contact imaging modality which can project the passive electromagnetic properties (conductivity, permittivity and permeability) under the principle of electromagnetic induction. In this research also, 8 copper trans-receiver coils were employed in the MIT system and fixed by the insulation belt. Meanwhile, geometric set-up of renal organ was set to imitate the transverse section of human renal. In the methodology, sensor performance analyses were done using frequency ranging from 50 kHz to 2 MHz of the MIT system on radii of calcium oxalate in renal. The sensor response and pattern is discussed in this paper.

Design of soft-magnetic shield in electromagnetic tomography

“…. (10) Here, B (p, q) is the boundary measurement data. According to (10), B (p, q) decreases as R m2 and R m3 increase.…”

“…(10) Here, B (p, q) is the boundary measurement data. According to (10), B (p, q) decreases as R m2 and R m3 increase. Therefore, the closer the soft-magnetic shield is to the pipe, the smaller the R m2 is, and the greater the boundary measurement data.…”

“…It has been applied in industry (e.g. the monitoring of the melting process [1,2], the testing of metal/non-metal components [3][4][5], and the visualization of the multiphase flow processes in fluidized beds [6][7][8][9]) and in biomedicine [10][11][12][13].…”