Simulation study of abdominal hemorrhage based on magnetic induction tomography

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Electromagnetism

Background:

• Abdominal hemorrhage poses significant life-threatening risks, necessitating prompt diagnosis and management.
• Magnetic induction tomography (MIT) offers a non-invasive, non-radioactive, and non-contact approach for disease screening and continuous patient monitoring.

Purpose of the Study:

• To develop and validate a magnetic induction tomography simulation method for detecting internal abdominal bleeding.
• To analyze the sensitivity of MIT to changes in bleeding volume and position within a realistic abdominal tissue model.

Main Methods:

• Construction of a realistic human abdominal tissue electrical impedance distribution model.
• Application of the finite element method for MIT simulations of internal bleeding.
• Validation of simulation results through phantom experiments.

Main Results:

• Sensitivity analysis revealed quantifiable phase differences correlated with bleeding radius and position.
• Proposed three sensitivity indicators (Ar, Ax, Ay) to monitor bleeding.
• Demonstrated linear and quasilinear relationships between phase differences and bleeding parameters (radius, x/y-axis displacement).

Conclusions:

• Phase difference sensitivity in MIT can serve as a quantitative indicator for monitoring the occurrence and progression of intra-abdominal hemorrhage.
• This research provides a foundation for using MIT in preliminary screening and continuous monitoring of abdominal bleeding diseases.