Evaluation of ultrasound point shear wave elastography reliability in an elasticity phantom

Sultan, Salahaden R; Alghamdi, Amer; Abdeen, Rawan; Almutairi, Fahad F.

doi:10.14366/usg.21114

Cited by 4 publications

(2 citation statements)

References 23 publications

(37 reference statements)

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“…Stiffer tissues exhibit faster shear velocities and higher Young’s moduli. Yuan Shengmei et al 15 performed SWE examinations on mid-pregnancy singleton placentas and found that the placenta elasticity values in the early-onset preeclampsia group were significantly higher than the normal pregnancy group, thereby identifying SWE as useful for evaluating placental function. This study used SWE to assess myometrial elasticity and found that the mean SWE values at the placental attachment site were significantly higher in GDM patients than the healthy controls.…”

Section: Discussionmentioning

confidence: 99%

Correlation Between Postpartum Myometrial Elasticity and Obstetric Complications in Pregnant Women with Gestational Diabetes Mellitus

Jin,

Xia,

et al. 2023

JMDH

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Objective To investigate postpartum myometrial elasticity in pregnant women with gestational diabetes mellitus (GDM) using shear wave elastography (SWE) and analyze the correlation between myometrial SWE values and obstetric complications. Methods Clinical data of women who gave birth at Affiliated Hospital of Yangzhou University from August 2022 to July 2023 were retrospectively analyzed and divided into two groups based on GDM diagnosis: the GDM group and the healthy control group. SWE was used to measure the elasticity values of the anterior and posterior myometrial walls in both groups. Differences in placental attachment position and SWE values at the placental attachment site were compared between the two groups. Spearman correlation analysis was utilized to evaluate the correlation between SWE values and obstetric complications. Results Glycated hemoglobin (HbA1c), homeostasis model assessment of insulin resistance (HOMA-IR), fasting plasma glucose (FPG), 2-hour postprandial glucose (2h PG), triglycerides (TG), and total cholesterol (TC) levels were higher in the GDM group than in the healthy control group (P<0.05). There was a statistically significant difference in placental attachment position between the two groups (P<0.05). In both the GDM (17.52±0.42 vs 25.29±0.74, P=0.001) and control groups (14.06±5.01 vs 22.20±6.34, P=0.001), mean SWE values were significantly lower for anterior versus posterior placental attachment, and mean SWE values were also significantly higher in the GDM versus control group for both anterior (17.52±0.42 vs 14.06±5.01, P=0.001) and posterior placental attachment (25.29±0.74 vs 22.20±6.34, P=0.001). Spearman correlation analysis showed that postpartum hemorrhage (r=0.632, P=0.017), preeclampsia (r=0.818, P=0.014), premature rupture of membranes (r=0.710, P=0.012), placental abruption (r=0.732, P=0.031), and ketoacidosis (r=0.729, P=0.022) were negatively correlated with average myometrial SWE values in the GDM group (P<0.05). Conclusion SWE values at the placental attachment site were higher in GDM patients than in healthy pregnant women, and myometrial elasticity was positively correlated with obstetric complications.

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Section: Discussionmentioning

confidence: 99%

Correlation Between Postpartum Myometrial Elasticity and Obstetric Complications in Pregnant Women with Gestational Diabetes Mellitus

Jin,

Xia,

et al. 2023

JMDH

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“…Lastly, it is known that different factors have been reported to influence the measurements of pSWE. A recent paper published by our group investigated the accuracy and reproducibility of pSWE measured by different operators and ultrasound scanners [28] as factors that could affect pSWE, but not depth. For this reason, in this study, we focused on depth only as a source of variability in pSWE measurements.…”

Section: Discussionmentioning

confidence: 99%

Effect of Depth on Ultrasound Point Shear Wave Elastography in an Elasticity Phantom

et al. 2022

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Background: Phantom studies are widely used to assess variability in measurements. This study aimed to assess the reliability and accuracy of point Shear Wave elastography (pSWE) measurements of an elasticity phantom. Methods: Measurements were obtained by an experienced certified clinical sonographer at three different depth levels in kPa, using a curvilinear 5-1MHz transducer of the EPIQ7 ultrasound imaging system. Results: A total of 180 pSWE measurements were obtained at three different depth levels (three cm, five cm, and seven cm) of the phantom background. The mean CV of pSWE was low at all depths (3 cm: 8.8%; 5 cm: 7%; 7 cm: 7.2%). There was a significant difference between measurements at depths of 3 cm vs. 7 cm (MD: −0.85, 95% CI −1.5, −0.11, p = 0.024) and measurements at depths 5 cm vs. 7 cm (MD: −1.1, 95% CI −1.7, −0.47, p = 0.001). An overestimation of mean pSWE measurements at a depth of 7 cm was noted compared to the manufacturer’s value (2.7%, p = 0.006). Conclusions: Superficial phantom SWE measurements in this study had low variability compared to deep measurement. pSWE measurements at deep levels can be overestimated.

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Adaptive design of ultrasound phantoms using additive manufacturing

Zalka,

Köhrer,

Songsaeng

et al. 2024

Medical Imaging 2024: Ultrasonic Imaging and Tomography

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Ultrasound imaging can be used to visualize the boundaries between two media with different properties, but less information is available about the medium penetrated. Therefore, conventional ultrasound devices used in routine medical imaging usually assume a constant value for the speed of sound of the structures. Thus, current research aims to develop new methods to obtain more information about the medium scanned. To support the research ultrasound phantoms with precisely known properties like speed of sound, attenuation or hardness can be used. We developed polyvinyl alcohol based phantoms and investigated the correlation between the properties and the freeze-thaw cycles (FTC), as well as the effects of glycerol on the speed of sound. Additionally, we designed 3D printed molds for shaping the phantom and improving the FTC process. Furthermore, a construction was designed to prevent the measurement setup from being contaminated by PVA and glycerol defusing out of the phantom. The physical properties of the phantoms measured were the speed of sound, attenuation and Shore hardness. The measurements conducted were carried out using the standards of the American Institute for Ultrasound in Medicine (AIUM) and the American Society for Testing and Materials (ASTM). There was an increase in Shore hardness and speed of sound as the number of FTCs increased. However, the differences in the speed of sound were only minimal, whereby higher differences could be achieved by the addition of glycerol. At present, no statements can be made about the attenuation. The measurements of the materials are in an early state and further improvement is needed. The manufacturing process and measurements were improved by 3D printed molds.

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Evaluation of ultrasound point shear wave elastography reliability in an elasticity phantom

Cited by 4 publications

References 23 publications

Correlation Between Postpartum Myometrial Elasticity and Obstetric Complications in Pregnant Women with Gestational Diabetes Mellitus

Correlation Between Postpartum Myometrial Elasticity and Obstetric Complications in Pregnant Women with Gestational Diabetes Mellitus

Effect of Depth on Ultrasound Point Shear Wave Elastography in an Elasticity Phantom

Adaptive design of ultrasound phantoms using additive manufacturing

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