Dielectric Properties of Urine for Diabetes Mellitus and Chronic Kidney Disease between 0.2 GHz and 50 GHz

Ting, Hua Nong; Mun, Peck Shen; Ong, Teng Aik; Chong, Yip Boon; Ng, Kwan Hoong

doi:10.1007/978-3-319-19387-8_305

Cited by 5 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [29] , the dielectric properties of urine samples from 40 healthy subjects were recorded across our frequency range of interest. The mean values from [29] are consistent with those of [15] , [30] , [31] , [32] . Two other studies, [33] (2 healthy volunteers) and [34] (4 healthy volunteers) also reported urine properties within our frequency range of interest.…”

Section: Methodssupporting

confidence: 77%

See 1 more Smart Citation

Proof-of-Concept of Microwave-Based Bladder State Detection Using Realistic Pelvic Models

Farshkaran¹,

Fry²,

Raterink

et al. 2024

IEEE Open J. Eng. Med. Biol.

View full text Add to dashboard Cite

Goal: Urinary incontinence (UI) affects a significant proportion of the population and is associated with negative physical and psychological side-effects. Microwave-based technologies may have the potential to monitor bladder volume, providing a proactive, low-cost and non-invasive tool to support individuals with UI. Methods: Studies to date on microwave bladder monitoring have been limited to highly simplified computational and experimental scenarios. In this work, we study the most realistic models to date (both male and female), which incorporate dielectrically and anatomically representative tissues of the pelvic region. Results: We examine the ability of detecting bladder fullness through both reflection and transmission-based parameters and, for the first time, study the effect of urine permittivity. As a proof-of-concept of bladder state detection, we further investigate reconstructing differential radar images of the bladder with two different volumes of urine. Conclusions: The results indicate that there is strong potential for monitoring and detecting the bladder state using microwave measurements.

show abstract

Section: Methodssupporting

confidence: 77%

“… Measurements of the dielectric properties of human urine found in the literature. The mean values of (a) Relative permittivity and (b) conductivity are plotted at a temperature of 37 °C as reported in [29] , [30] , [31] , [32] , [33] , [34] . …”

Section: Methodsmentioning

confidence: 99%

Proof-of-Concept of Microwave-Based Bladder State Detection Using Realistic Pelvic Models

Farshkaran¹,

Fry²,

Raterink

et al. 2024

IEEE Open J. Eng. Med. Biol.

View full text Add to dashboard Cite

show abstract

“…The lower relaxation frequency observed in samples with proteinuria was explained by a decrease in bulk water leading to slower relaxation times [28]. Similar results were also shown when urine of diabetic and CKD patients was compared to normal subjects, but differences were more significant between normal and CKD patients [29]. Other studies have investigated the effect glycosuria on the dielectric properties of urine and observed an increase in dielectric constant with increasing glucose in urea [30,31,32,33].…”

Section: Discussionsupporting

confidence: 66%

Electrical detection of blood cells in urine

Nasir

Raji

Mustafa

et al. 2020

Heliyon

View full text Add to dashboard Cite

Available methods for detecting blood in the urine (hematuria) can be problematic since results can be influenced by many factors in patients and in the lab settings, resulting in false positive or false negative results. This necessitates the development of new, accurate and easy-access methods that save time and effort. This study demonstrates a label-free and accurate method for detecting the presence of red and white blood cells (RBCs and WBCs) in urine by measuring the changes in the dielectric properties of urine upon increasing concentrations of both cell types. The current method could detect changes in the electrical properties of fresh urine over a short time interval, making this method suitable for detecting changes that cannot be recognized by conventional methods. Correcting for these changes enabled the detection of a minimum cell concentration of 10 2 RBCs per ml which is not possible by conventional methods used in the labs except for the semi-quantitative method that can detect 50 RBCs per ml, but it is a lengthy and involved procedure, not suitable for high volume labs. This ability to detect very small amount of both types of cells makes the proposed technique an attractive tool for detecting hematuria, the presence of which is indicative of problems in the excretory system.

show abstract

Microwave Reflection-based Bladder State Discrimination with Realistic Pelvic Models: Impact of Urine Conductivity and Volume

Raterink¹,

Farshkaran²,

Porter³

2021

2021 IEEE MTT-S International Microwave and RF Conference (IMARC)

View full text Add to dashboard Cite

Dielectric Properties of Urine for Diabetes Mellitus and Chronic Kidney Disease between 0.2 GHz and 50 GHz

Cited by 5 publications

References 17 publications

Proof-of-Concept of Microwave-Based Bladder State Detection Using Realistic Pelvic Models

Proof-of-Concept of Microwave-Based Bladder State Detection Using Realistic Pelvic Models

Electrical detection of blood cells in urine

Microwave Reflection-based Bladder State Discrimination with Realistic Pelvic Models: Impact of Urine Conductivity and Volume

Contact Info

Product

Resources

About