Correlation of ultrasound bladder vibrometry assessment of bladder compliance with urodynamic study results

Bayat, Mahdi; Kumar, Viksit; Denis, Max; Webb, Jeremy S.; Gregory, Adriana; Mehrmohammadi, Mohammad; Cheong, Mathew; Husmann, Douglas A.; Mynderse, Lance A.; Alizad, Azra; Fatemi, Mostafa

doi:10.1371/journal.pone.0179598

Cited by 32 publications

(32 citation statements)

References 23 publications

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“…[63] Ultrasound bladder vibrometry (UBV) has also been studied with concurrent UDS to correlate velocity and elasticity with detrusor pressure, assisting in the evaluation of bladder compliance. [64][65] Both of these new uses of ultrasound technology would allow for bladder compliance to be measured without the need for invasive UDS.…”

Section: Emerging Technologies and Methods To Evaluate The Filling Phasementioning

confidence: 99%

“…63 Increased bladder vibrometry in non-compliant bladder. [64][65] Increased detrusor wall tension in OAB. [66][67] Abnormal bladder fill shape in OAB.…”

Section: Detrusor Biomechanical Propertiesmentioning

confidence: 99%

“…[66][67] Abnormal bladder fill shape in OAB. 68 Sturm 63 , Bayat 64 , Nenadic 65 , Nagle 66 , Habteyes 67 , Glass 68…”

Section: Detrusor Biomechanical Propertiesmentioning

confidence: 99%

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New Diagnostics for Male Lower Urinary Tract Symptoms

Swavely

Speich

Stothers

et al. 2019

Curr Bladder Dysfunct Rep

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Purpose of review: Lower urinary tract symptoms (LUTS) is a common constellation of symptoms that affect the aging male population with an astonishing prevalence. New technology and new uses of established technology are being used to help further evaluate LUTS in the male population and help guide treatment options. This review focuses on the developments and future directions in diagnostic modalities for evaluation of male LUTS, focusing on evaluation of both the filling and voiding phases of micturition. Recent findings: New techniques in evaluating the voiding phase include penile cuff test, external pressure sensing condom catheter, ultrasound measurement of detrusor wall thickness, ultrasound measurement of intravesical prostatic protrusion, doppler ultrasound and NIRS technology. Evaluation of the filling phase is still undergoing much development and requires additional validation studies. The techniques undergoing evaluation include sensation meters during UDS, assessing bladder micromotion and wall rhythm, assessing detrusor wall biomechanics, ultrasound measurement of detrusor wall thickness, pelvic doppler ultrasound, as well as functional brain imaging including fNIRS and fMRI. Summary: The development of novel, non-invasive, diagnostic tools have the potential for better evaluation of LUTS with earlier and enhanced treatments. This will likely improve the quality of life for men with LUTS.

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Section: Emerging Technologies and Methods To Evaluate The Filling Phasementioning

confidence: 99%

“…63 Increased bladder vibrometry in non-compliant bladder. [64][65] Increased detrusor wall tension in OAB. [66][67] Abnormal bladder fill shape in OAB.…”

Section: Detrusor Biomechanical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

New Diagnostics for Male Lower Urinary Tract Symptoms

Swavely

Speich

Stothers

et al. 2019

Curr Bladder Dysfunct Rep

View full text Add to dashboard Cite

show abstract

“…Therefore, there is an increased demand for noninvasive methods to assess bladder dysfunction. Recently, ultrasound bladder vibrometry (UBV) has been developed to noninvasively measure the mechanical properties of the bladder [14][15][16]. UBV utilizes an ultrasound array transducer to generate acoustic radiation force that excites transient waves in tissues and uses a Lamb wave model to extract parameters of elasticity based on standard least-square fitting procedures and wave dispersion analysis along the bladder wall.…”

Section: Introductionmentioning

confidence: 99%

Fully Automated Segmentation of Bladder Sac and Measurement of Detrusor Wall Thickness from Transabdominal Ultrasound Images

Akkus

Kim

Nayak

et al. 2020

Sensors

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Ultrasound measurements of detrusor muscle thickness have been proposed as a diagnostic biomarker in patients with bladder overactivity and voiding dysfunction. In this study, we present an approach based on deep learning (DL) and dynamic programming (DP) to segment the bladder sac and measure the detrusor muscle thickness from transabdominal 2D B-mode ultrasound images. To assess the performance of our method, we compared the results of automated methods to the manually obtained reference bladder segmentations and wall thickness measurements of 80 images obtained from 11 volunteers. It takes less than a second to segment the bladder from a 2D B-mode image for the DL method. The average Dice index for the bladder segmentation is 0.93 ± 0.04 mm, and the average root-mean-square-error and standard deviation for wall thickness measurement are 0.7 ± 0.2 mm, which is comparable to the manual ground truth. The proposed fully automated and fast method could be a useful tool for segmentation and wall thickness measurement of the bladder from transabdominal B-mode images. The computation speed and accuracy of the proposed method will enable adaptive adjustment of the ultrasound focus point, and continuous assessment of the bladder wall during the filling and voiding process of the bladder.

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“…Kinetic acoustic vitreoretinal examination (KAVE) used the Voigt model with an inertial component attached in series to study tissue creep behavior based on an acoustic radiation force push [ 22 ]. Lamb wave dispersion analysis has been used to assess the correlation between bladder wall mechanical properties and urodynamic study [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic parameters as discriminators of breast masses: Initial human study results

et al. 2018

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Shear wave elastography is emerging as a clinically valuable diagnostic tool to differentiate between benign and malignant breast masses. Elastography techniques assume that soft tissue can be modelled as a purely elastic medium. However, this assumption is often violated as soft tissue exhibits viscoelastic properties. In order to explore the role of viscoelastic parameters in suspicious breast masses, a study was conducted on a group of patients using shear wave dispersion ultrasound vibrometry in the frequency range of 50–400 Hz. A total of 43 female patients with suspicious breast masses were recruited before their scheduled biopsy. Of those, 15 patients did not meet the data selection criteria. Voigt model based shear elasticity showed a significantly (p = 7.88x10-6) higher median value for the 13 malignant masses (16.76±13.10 kPa) compared to 15 benign masses (1.40±1.12 kPa). Voigt model based shear viscosity was significantly different (p = 4.13x10-5) between malignant (8.22±3.36 Pa-s) and benign masses (2.83±1.47 Pa-s). Moreover, the estimated time constant from the Voigt model, which is dependent on both shear elasticity and viscosity, differed significantly (p = 6.13x10-5) between malignant (0.68±0.33 ms) and benign masses (3.05±1.95 ms). Results suggest that besides elasticity, viscosity based parameters like shear viscosity and time constant can also be used to differentiate between malignant and benign breast masses.

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Correlation of ultrasound bladder vibrometry assessment of bladder compliance with urodynamic study results

Cited by 32 publications

References 23 publications

New Diagnostics for Male Lower Urinary Tract Symptoms

New Diagnostics for Male Lower Urinary Tract Symptoms

Fully Automated Segmentation of Bladder Sac and Measurement of Detrusor Wall Thickness from Transabdominal Ultrasound Images

Viscoelastic parameters as discriminators of breast masses: Initial human study results

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