Bone mineral density analysis using ultra wideband microwave measurements

Augustine, Robin; Kurup, Dhanesh G.; Raman, Sujith; Lee, Dujin; Kim, Kangwook; Rydberg, Anders

doi:10.1109/imarc.2015.7411399

Cited by 11 publications

(10 citation statements)

References 9 publications

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“…Here, it is clearly observed that the amplitude of reflection is increased as thickness of skull powder is increased. This is because the reflection strongly depends on the effective dielectric properties of defect area which is on the composition of the defect cavity [13,14]. We believe that the tail ringing after defect response observed is due to multiple reflections from layers.…”

Section: Longitudinal Scanmentioning

confidence: 91%

A Preliminary Research on Skull Healing Utilizing Short Pulsed Radar Technique on Layered Cranial Surgery Phantom Models

Lee¹,

Velander²,

Nowinski³

et al. 2018

PIER C

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Abstract-This paper presents a novel approach of sensing the defect response after craniotomy on cranial surgery phantom models utilizing a short pulsed radar technique. The proposed antenna has demonstrated that the short pulse can be radiated without antenna's own distortion, which is a desirable characteristic for sensing defect response. The layered microwave head phantom has been developed for the purpose of emulating the healing stages of cranial surgery after craniotomy. The fabricated phantom has been validated with reference values reported in literature. The longitudinal scan has been performed for various skull thicknesses as a preliminary study. The one-dimensional pulsed profile has been obtained to achieve the pulse compression so that the defect response can be highlighted. The results obtained in this paper have the potential that the microwave based technique can be utilized for monitoring the healing stages for the future work.

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Section: Longitudinal Scanmentioning

confidence: 91%

A Preliminary Research on Skull Healing Utilizing Short Pulsed Radar Technique on Layered Cranial Surgery Phantom Models

Lee¹,

Velander²,

Nowinski³

et al. 2018

PIER C

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“…Figure 3 shows an illustrative schematic of the different layers of the SRR. Previous works have used this sensor [ 31 , 43 , 44 ] to analyze bone healing in patients with lower extremity trauma and patients undergoing surgery in treatment of craniosynostosis. A similar system was presented in those works using a similar hardware configuration but operating with only one sensor in reflection mode.…”

Section: Methodsmentioning

confidence: 99%

MAS: Standalone Microwave Resonator to Assess Muscle Quality

Mattsson

Ackermans

Mandal

et al. 2021

Sensors

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Microwave-based sensing for tissue analysis is recently gaining interest due to advantages such as non-ionizing radiation and non-invasiveness. We have developed a set of transmission sensors for microwave-based real-time sensing to quantify muscle mass and quality. In connection, we verified the sensors by 3D simulations, tested them in a laboratory on a homogeneous three-layer tissue model, and collected pilot clinical data in 20 patients and 25 healthy volunteers. This report focuses on initial sensor designs for the Muscle Analyzer System (MAS), their simulation, laboratory trials and clinical trials followed by developing three new sensors and their performance comparison. In the clinical studies, correlation studies were done to compare MAS performance with other clinical standards, specifically the skeletal muscle index, for muscle mass quantification. The results showed limited signal penetration depth for the Split Ring Resonator (SRR) sensor. New sensors were designed incorporating Substrate Integrated Waveguides (SIW) and a bandstop filter to overcome this problem. The sensors were validated through 3D simulations in which they showed increased penetration depth through tissue when compared to the SRR. The second-generation sensors offer higher penetration depth which will improve clinical data collection and validation. The bandstop filter is fabricated and studied in a group of volunteers, showing more reliable data that warrants further continuation of this development.

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“…In contrast, Geyikoglu and Cavusoglu have not been investigated bone healing; they treated the bone cancer by non‐invasive microwave hyperthermia technique and also flexible antenna structure is presented 13 . In addition, Bone mineral density has been examined by wide band microwave techniques, since bone mineral density could provide to detect the case of fractures or de‐mineralization in the case of osteoporosis conditions 14 . Furthermore, there are many attempts to investigate bone healing period in the literature by different techniques 15–18 .…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental sensing of bone healing by microwave approach

Akdoğan

Özkaner

Alkurt

et al. 2022

Int J Imaging Syst Tech

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A medical imaging system is often required to monitor bone growth or bone healing in patients. X-ray imaging method is one of the most used imaging systems but it affects human health due to the ionizing effect of X-rays on matter. In this paper, authors investigated the healing period of a bone structure by using electromagnetic antennas. Two different design approaches were examined which are the monopole antenna approach and the horn antenna approach with the frequency bands of 4-10 and 3-18 GHz, respectively.According to simulation results of the first scenario, radius change of a circular bone from 1 to 8 mm causes a transmission reduction from À13.5 dB to À20 dB at 7 GHz. In the second scenario, the thickness of the bone changed from 0.05 to 20 mm and the corresponding transmission value is reduced from À5 to À25 dB at 10 GHz of constant frequency. All these two approaches showed that the bone variation with time changes the transmission characteristics of detector antennas at the operating frequencies. In the last step of this study, an experimental measurement is carried out by using two opposite horn antennas and a planar bone structure in microwave laboratory. The measured results are in a good agreement with the simulated results in the second scenario. This study gives an opportunity to determine bone healing periods in medical applications by microwave techniques.

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Bone mineral density analysis using ultra wideband microwave measurements

Cited by 11 publications

References 9 publications

A Preliminary Research on Skull Healing Utilizing Short Pulsed Radar Technique on Layered Cranial Surgery Phantom Models

A Preliminary Research on Skull Healing Utilizing Short Pulsed Radar Technique on Layered Cranial Surgery Phantom Models

MAS: Standalone Microwave Resonator to Assess Muscle Quality

Theoretical and experimental sensing of bone healing by microwave approach

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