A Quantitative Comparison of Four Current Portable Ultrasound Bladder Scanners

Small, D. R.; Watson, A.; McConnachie, Alex

doi:10.1016/j.bjmsu.2008.05.013

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…In another study, D. R. Small et al evaluated the measurement error of a portable bladder scanner of which use in the clinic has been well established to estimate the post-void residual. The average difference was 16.7 mL (SD: 50.2 mL), much greater than the average difference − 5.5 mL (SD: 47.2 mL) in this study 20 . The proudP’s VV estimation algorithm is based on the same AI architecture as used in this paper, but is trained on larger scale with more diverse data.…”

Section: Discussioncontrasting

confidence: 76%

Validation of an algorithm for sound-based voided volume estimation

Jung,

Ryu,

Lee

et al. 2024

Sci Rep

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A voiding diary is commonly used in clinical practice to monitor urinary tract health. However, manual recording and use of a measuring cup can cause significant inaccuracy and inconvenience. Recently sound-based voided volume estimation algorithms such as proudP have shown potential to accurately measure the voided volumes of patients urination while overcoming these inconveniences. In order to validate the sound-based voided volume estimation algorithm, we chose bodyweight change after urination as a reference value. Total 508 subjects from the United States and Korea were enrolled. 584 data points that have matching bodyweights change data and urination sound data were collected, and fivefold cross validation was performed in order to evaluate the model on all data in the dataset. The mean voided volume estimated by the algorithm was 202.6 mL (SD: ± 114.8) while the mean bodyweight change after urination was 208.0 g (SD: ± 121.5), and there was a strong linear correlation with high statistical significance (Pearson’s correlation coefficient = 0.92, p-value < 0.001). Two paired t-test showed the equivalence with bodyweight change data with 10 mL margin. Additionally, a Bland–Altman plot shows a mean difference of − 5.5 mL with LoA (− 98.0, 87.1). The results support high performance of the algorithm across the large population data from multi-site clinical trials.

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Section: Discussioncontrasting

confidence: 76%

Validation of an algorithm for sound-based voided volume estimation

Jung,

Ryu,

Lee

et al. 2024

Sci Rep

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“…Generally, catheterization delays of 30 min after a bladder ultrasound examination are common in the clinical settings of inpatient departments. Real-time B-mode ultrasound has been reported to underestimate the bladder volumes when a correction coefficient of 0.52 is used, especially in cases involving larger amounts of PVRU [26]. Therefore, different coefficients should be used, depending on the shape of the bladder, to estimate bladder volume.…”

Section: Discussionmentioning

confidence: 99%

Comparative Effectiveness of Two Models of Point-of-Care Ultrasound for Detection of Post-Void Residual Urine during Acute Ischemic Stroke: Preliminary Findings of Real-World Clinical Application

et al. 2023

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We conducted a comparative study of two models of point-of-care ultrasound devices for measuring post-void residual urine (PVRU). We prospectively enrolled 55 stroke inpatients who underwent both real-time B-mode ultrasound (Device A) and automated three-dimensional (3D) scanning ultrasound (Device B), with a total of 108 measurements. The median PVRU volume of Device B was 40 mL larger than that of Device A. The PVRU difference between the devices was positively and linearly correlated with PVRU. The correlation of PVRU volume between the devices was strong, but the agreement level was only moderate. Measurement deviations were observed in 43 (40%) and 11 (10%) measurements with Device B and Device A, respectively. The PVRU volume was low in spherical bladder shapes but sequentially increased in triangular, undefined, ellipsoid, and cuboid bladder shapes. Further comparison of 60 sets of PVRU without measurement deviations revealed higher agreements between the devices at correction coefficients of 0.52, 0.66, and 0.81 for PVRU volumes of <100, 100–200, and >200 mL, respectively. The automated 3D scanning ultrasound is more convenient for learning and scanning, but it exhibits larger measurement deviations. Real-time B-mode ultrasound accurately visualizes the urinary bladder but tends to underestimate the urinary bladder when the PVRU volume is large. Hence, real-time B-mode ultrasound with automated PVRU-based adjustment of calculation formulas may be a better solution for estimating bladder volume.

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“…Measuring voided urine to compare volume with ultrasound readings was also not performed during our study. This method is advocated as ‘gold standard’ by some, 1 however Small et al 12 stated even when measuring catheterised volumes, this method may have variable degree of accuracy. There is also potential for residual bladder volume to remain post-void in some individuals, adversely affecting accuracy of measurements 13 .…”

Section: Discussionmentioning

confidence: 99%

Implementation of ultrasound bladder volume scanning for patients receiving intensity-modulated radiotherapy to the cervix or endometrium: clinical experiences from a United Kingdom radiotherapy department

Claxton

Appleyard

2017

J Radiother Pract

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Background and purposeAchieving daily consistent bladder volume is acknowledged as challenging for patients undergoing radiotherapy to the cervix or endometrium. We investigated if use of an ultrasound bladder volume scanner (BioCon-700) improves bladder reproducibility when used during an active volume correction protocol.Materials and methodsDuring our method-comparison study, prospectively recruited patients (n=20) followed a fluid-loading protocol to achieve acceptable bladder volume. Bladder ultrasound was performed daily to verify planned volume, with patients actively correcting volumes outside a planned range up to a maximum of three times. Using the Bland–Altman method, we compared mean ultrasound readings (USMean) with mean cone-beam computed tomography (CBCT) volumes (CBCTMean). We also conducted staff focus groups exploring issues encountered during implementation of bladder scanning.ResultsComparing USMean with CBCTMean produced a mean of the differences −10±49·92 mL (1 SD), demonstrating that bladder volume scanning is equivalent to our standard measure for the stated confidence levels. The cohort mean bladder volume decrease from week 1 to 5 was only 8·4%. Mean USMean was 323 mL, mean CBCTMean was 313 mL. Staff experience with the scanner overall was positive.ConclusionsThe BioCon-700 is suitable for the purpose of daily pre-treatment volume verification, facilitating daily assessment and modification of bladder volume, resulting in reproducible treatment volumes.

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A Quantitative Comparison of Four Current Portable Ultrasound Bladder Scanners

Cited by 4 publications

References 12 publications

Validation of an algorithm for sound-based voided volume estimation

Validation of an algorithm for sound-based voided volume estimation

Comparative Effectiveness of Two Models of Point-of-Care Ultrasound for Detection of Post-Void Residual Urine during Acute Ischemic Stroke: Preliminary Findings of Real-World Clinical Application

Implementation of ultrasound bladder volume scanning for patients receiving intensity-modulated radiotherapy to the cervix or endometrium: clinical experiences from a United Kingdom radiotherapy department

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