On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves

Sunil Gaddam; Poulami Samaddar; Muhammad Khan; Devanshi Damani; Suganti Shivaram; Sayan Roy; Shuvashis Dey; Dipankar Mitra; Shivaram P. Arunachalam

doi:10.1109/AP-S/USNC-URSI47032.2022.9886974

On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves

Sunil Gaddam, Poulami Samaddar, Muhammad Khan, Devanshi Damani, Suganti Shivaram, Sayan Roy, Shuvashis Dey, Dipankar Mitra, Shivaram P. Arunachalam

Gastroenterology and Hepatology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Arterial waveforms can provide valuable insights into a patient's health. Hematocrit (HCT) level, the blood volume concentration of red blood cells, makes up 40 to 50% of the total blood concentration. Dielectric spectroscopy studies focusing on blood have shown that relative permittivity and conductivity vary with HCT levels. This paper presents a novel method to detect the hematocrit levels in the blood and sense the arterial waveform. A finite-difference time-domain (FDTD)-based 2D electromagnetic (EM) simulation with an artery and tissue model was used to detect different HCT levels at 915 MHz. Based on published literature, dielectric parameters for a normal range of HCT levels were assumed from animal blood studies. Additionally, a 2D wrist simulation model was developed at 915 MHz and 2.45 GHz with a multiple-port system. Based on numerical simulations, EM signals were sensitive to different HCT levels and changes in arterial blood volume. The simulation results indicate a great potential for microwave-based non-invasive sensing of HCT levels and arterial waveforms.

Original language	English (US)
Title of host publication	2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1070-1071
Number of pages	2
ISBN (Electronic)	9781665496582
DOIs	https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886974
State	Published - 2022
Event	2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Denver, United States Duration: Jul 10 2022 → Jul 15 2022

Publication series

Name	2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings

Conference

Conference	2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022
Country/Territory	United States
City	Denver
Period	7/10/22 → 7/15/22

Keywords

arterial waveform
blood
hematocrit
microwaves
return loss

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Instrumentation

Access to Document

10.1109/AP-S/USNC-URSI47032.2022.9886974

Cite this

Gaddam, S., Samaddar, P., Khan, M., Damani, D., Shivaram, S., Roy, S., Dey, S., Mitra, D., & Arunachalam, S. P. (2022). On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves. In 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings (pp. 1070-1071). (2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886974

On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves. / Gaddam, Sunil; Samaddar, Poulami; Khan, Muhammad et al.
2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. p. 1070-1071 (2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gaddam, S, Samaddar, P, Khan, M, Damani, D, Shivaram, S, Roy, S, Dey, S, Mitra, D & Arunachalam, SP 2022, On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves. in 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings. 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 1070-1071, 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022, Denver, United States, 7/10/22. https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886974

Gaddam S, Samaddar P, Khan M, Damani D, Shivaram S, Roy S et al. On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves. In 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2022. p. 1070-1071. (2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings). doi: 10.1109/AP-S/USNC-URSI47032.2022.9886974

Gaddam, Sunil ; Samaddar, Poulami ; Khan, Muhammad et al. / On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves. 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. pp. 1070-1071 (2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings).

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abstract = "Arterial waveforms can provide valuable insights into a patient's health. Hematocrit (HCT) level, the blood volume concentration of red blood cells, makes up 40 to 50% of the total blood concentration. Dielectric spectroscopy studies focusing on blood have shown that relative permittivity and conductivity vary with HCT levels. This paper presents a novel method to detect the hematocrit levels in the blood and sense the arterial waveform. A finite-difference time-domain (FDTD)-based 2D electromagnetic (EM) simulation with an artery and tissue model was used to detect different HCT levels at 915 MHz. Based on published literature, dielectric parameters for a normal range of HCT levels were assumed from animal blood studies. Additionally, a 2D wrist simulation model was developed at 915 MHz and 2.45 GHz with a multiple-port system. Based on numerical simulations, EM signals were sensitive to different HCT levels and changes in arterial blood volume. The simulation results indicate a great potential for microwave-based non-invasive sensing of HCT levels and arterial waveforms.",

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AB - Arterial waveforms can provide valuable insights into a patient's health. Hematocrit (HCT) level, the blood volume concentration of red blood cells, makes up 40 to 50% of the total blood concentration. Dielectric spectroscopy studies focusing on blood have shown that relative permittivity and conductivity vary with HCT levels. This paper presents a novel method to detect the hematocrit levels in the blood and sense the arterial waveform. A finite-difference time-domain (FDTD)-based 2D electromagnetic (EM) simulation with an artery and tissue model was used to detect different HCT levels at 915 MHz. Based on published literature, dielectric parameters for a normal range of HCT levels were assumed from animal blood studies. Additionally, a 2D wrist simulation model was developed at 915 MHz and 2.45 GHz with a multiple-port system. Based on numerical simulations, EM signals were sensitive to different HCT levels and changes in arterial blood volume. The simulation results indicate a great potential for microwave-based non-invasive sensing of HCT levels and arterial waveforms.

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On the Non-invasive Sensing of Arterial Waveform and Hematocrit using Microwaves

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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