Effectiveness of Shear Wave Elastography in the diagnosis of acute pancreatitis on admission

Durmaz, Mehmet Sedat; Arslan, Serdar; Özbakır, Bora; Güngör, Gökhan; Tolu, İsmet; Arslan, Fatma Zeynep; Sivri, Mesut; Koplay, Mustafa

doi:10.11152/mu-1398

Cited by 19 publications

(27 citation statements)

References 24 publications

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“…However, 2D-SWE is less operator-dependent, real-time, reproducible and allows the quantitative evaluation of the target tissue [11,12,23]. Elastic value E (kPa) is calculated using the equation E =3ρ(m/s)² (ρ refers to the tissue density, with approximated value in human body as 1 g/cm³ and m/s refers to the shear wave propagation velocity) [25]. The quantitative elasticity values both measured in kPa and m/s revealed good diagnostic performance, but the specifity of the standart deviation and area under the ROC curve of the measurement in kPa were found significantly higher compared to the measurement in m/s [26].…”

Section: Discussionmentioning

confidence: 99%

Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

et al. 2021

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Aim: We compared the two-dimensional shear-wave elastography (2D-SWE) values between the testes with same side operated inguinal hernia (IH) and the contralateral testes, as well as the testes of healthy volunteers without IH. Material and methods: A total of 189 participants (117 unilateral [117 testes] and 8 bilateral operated IH patients [16 testes] and 64 healthy volunteers [128 testes]), providing a total of 378 testicles, were investigated prospectively. All patients underwent B-mode ultrasonography (US) and 2D-SWE examinations. Operation type, the period between diagnosis and operation, the period since the operation, testes volumes, and 2D-SWE values were compared. Results: The B-mode US finding of the testes were normal in all participants. The mean testes’ volume of same side operated IH was significantly lower comparing to contralat-eral testes and the healthy group (p<0.001). The 2D-SWE values of the testes with same side operated IH were significantly higher comparing to the contralateral testes and the healthy group (p<0.001). There was a statistically significant correlation between 2D-SWE values and IH severity, as well as the duration of the hernia (p=0.001). There was no significant correlation between the IH severity and testes volume (p=0.285). No significant difference was found between the direct and indirect IH in terms of testicular volume and SWE values and between the duration of the hernia, the time after sugery, testicular volume and SWE values according to operation techniques(p>0.005). Conclusions: The 2D-SWE can be used as an effective imag-ing method to evaluate testicular stiffness with objective numerical values, to estimate the severity of histologic damage in patients with operated IH.

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Section: Discussionmentioning

confidence: 99%

Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

et al. 2021

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“…Elastography is also used as a relatively new technique to evaluate the tissue elasticity in thyroid diseases, with 2 basic types: strain elastography and shear wave elastography (SWE). Shear wave elastography is a real‐time, noninvasive, and reproducible imaging method that allows the quantitative assessment of tissues according to their stiffness 4–9 . The limitations of strain elastography are its operator dependency and semiquantitative nature of the data.…”

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confidence: 99%

“…The velocity of shear waves in tissue depends on the stiffness of the tissue (slower propagation occurs in normal thyroid parenchyma, and faster propagation occurs in stiffer thyroid parenchyma). The quantitative elasticity value can be measured in both meters per second and kilopascals 4,5,7,12 …”

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Evaluation of the Stiffness of Thyroid Parenchyma With Shear Wave Elastography Using a Free–Region of Interest Technique in Graves Disease

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Durmaz

Baldane

et al. 2020

J of Ultrasound Medicine

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Objectives The first aim was to evaluate the stiffness of thyroid parenchyma with shear wave elastography (SWE) in patients with Graves disease (GD) and compare the elastographic values with those of asymptomatic volunteers. The second aim was to evaluate whether there was a correlation between SWE values and grayscale ultrasound (US) and laboratory parameters. Methods In this prospective study, the thyroid gland parenchyma of 50 patients whose clinical and laboratory findings were indicative for GD and 54 asymptomatic participants with normal laboratory values was examined by SWE. Grayscale US images of the thyroid and submandibular gland were recorded. The volume of the thyroid gland was measured. Elastographic measurements were performed with a free region of interest. The quantitative SWE values (meters per second and kilopascals) of the patient and control groups were compared. A correlation analysis between the SWE values and grayscale US and laboratory parameters was performed. Results The median (range) SWE values of the thyroid gland in patients with GD were significantly higher than those of the control group [17.34 (12.58–56.15) versus 12.05 (7.72–23.67) kPa and 2.28 (1.83–4.12) versus 1.92 (1.55–2.61) m/s; P < .001 for both comparisons]. When 14.5 kPa or 2.115 m/s was designated as the cutoff value, GD could be diagnosed with a high sensitivity and specificity. We showed a negative weak correlation between the SWE values and parenchymal echogenicity in the GD group. Conclusions Shear wave elastography can be used as an effective imaging method with high sensitivity and specificity rates in the diagnosis of GD.

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“…There are various studies regarding the increased stiffness of tissues in infectious‐inflammatory diseases 18–20 . Two‐dimensional (2D) shear wave elastography (SWE) is an important imaging method that allows a quantitative assessment of tissues stiffness.…”

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“…Two‐dimensional (2D) shear wave elastography (SWE) is an important imaging method that allows a quantitative assessment of tissues stiffness. Therefore, it offers information that can be correlated with histologic changes in tissues and helps determine tissue elasticity changes 18,21 . Two‐dimensional SWE allows measurement of the whole target area.…”

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Utility of 2‐Dimensional Shear Wave Elastography for Assessment of the Bladder Wall in Children With Acute Cystitis

Durmaz

Yorulmaz

Durmaz

et al. 2020

J of Ultrasound Medicine

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Objectives The aim of this study was to investigate the efficacy of 2‐dimensional (2D) shear wave elastography (SWE) in the diagnosis of acute cystitis (AC) in children. Methods Between June 2019 and March 2020, 126 children with AC and 126 healthy participants were prospectively investigated by 2D SWE and B‐mode ultrasound. Elastographic measurements were performed by drawing the contours of the posterior wall of the bladder between the ureter orifices using a free region of interest. The quantitative 2D SWE values of the patients and the healthy group were compared. Results The mean 2D SWE values of the bladder wall were significantly higher in patients with AC compared to the healthy group (P = .001). On B‐mode ultrasound imaging, the bladder wall thickness of patients with AC was higher than that in the healthy group (P = .001). On 2D SWE, when the cutoff value used was 9.25 kPa, the sensitivity, specificity, positive predictive value, and negative predictive value were 92.1%, 88.1%, 89.3%, and 92.6%, respectively, whereas when the cutoff value used was 1.72 m/s, the sensitivity, specificity, positive predictive value, and negative predictive value were 90.5%, 88.9%, 89.1%, and 90.7%. There was a statistically significant positive correlation between the 2D SWE values and wall thickness measurements (P < .001). Conclusions Two‐dimensional SWE is a noninvasive, fast, and effective imaging method to evaluate the bladder wall in children with AC.

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Effectiveness of Shear Wave Elastography in the diagnosis of acute pancreatitis on admission

Cited by 19 publications

References 24 publications

Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

Evaluation of the Stiffness of Thyroid Parenchyma With Shear Wave Elastography Using a Free–Region of Interest Technique in Graves Disease

Utility of 2‐Dimensional Shear Wave Elastography for Assessment of the Bladder Wall in Children With Acute Cystitis

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