Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

Woo, Sungmin; Kim, Sang-Youn; Lee, Myoung Seok; Cho, Jeong Yeon; Kim, Seung Hyup

doi:10.1016/j.clinimag.2014.11.013

Cited by 40 publications

(31 citation statements)

References 25 publications

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“…Tissue stiffness is expressed as the Young’s modulus or simply as the ratio of stress generated by tissue deformation 41 . A previous study showed no significant difference in intra-observer reproducibility among the measurements stratified by prostate gland volume, patient age, or levels of serum PSA 42 . Compared with quasistatic compression elastography, SWE is much closer to a standard TRUS clinical examination because it does not require any additional compression.…”

Section: Discussionmentioning

confidence: 83%

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Accuracy of shear wave elastography for the diagnosis of prostate cancer: A meta-analysis

Liang

Wang

et al. 2017

Sci Rep

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Many studies have established the high diagnostic accuracy of shear wave elastography (SWE) for the detection of prostate cancer (PCa); however, its utility remains a subject of debate. This meta-analysis sought to appraise the overall accuracy of SWE for the detection of PCa. A literature search of the PubMed, Embase, Cochrane Library, Web of Science and CNKI (China National Knowledge Infrastructure) databases was conducted. In all of the included studies, the diagnostic accuracy of SWE was compared with that of histopathology, which was used as a standard. Data were pooled, and the sensitivity, specificity, area under the curve (AUC), positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR) were calculated to estimate the accuracy of SWE. The pooled sensitivity and specificity for the diagnosis of PCa by SWE were 0.844 (95% confidence interval: 0.696–0.927) and 0.860 (0.792–0.908), respectively. The AUC was 0.91 (0.89–0.94), the PLR was 6.017 (3.674–9.853), and the NLR was 0.182 (0.085–0.389). The DOR was 33.069 (10.222–106.982). Thus, SWE exhibited high accuracy for the detection of PCa using histopathology as a diagnostic standard. Moreover, SWE may reduce the number of core biopsies needed.

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Section: Discussionmentioning

confidence: 83%

“…Recently, SWE has been shown to be a useful technique for prostate examination 9, 14–19, 21, 42 . Barr et al .…”

Section: Discussionmentioning

confidence: 99%

Accuracy of shear wave elastography for the diagnosis of prostate cancer: A meta-analysis

Liang

Wang

et al. 2017

Sci Rep

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“…TRUS by itself is unreliable in distinguishing normal prostate gland from cancerous tissue 120, with sensitivity and specificity ranging from 40 to 50% 119. The untargeted biopsy has limitations such as procedure-related complications (bleeding and infection), false negative results 121, and a high rate of detecting indolent cancers, which is of uncertain clinical benefit 120, 122.…”

Section: Clinical Applications Of Ultrasound Elastographymentioning

confidence: 99%

Ultrasound Elastography: Review of Techniques and Clinical Applications

et al. 2017

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Elastography-based imaging techniques have received substantial attention in recent years for non-invasive assessment of tissue mechanical properties. These techniques take advantage of changed soft tissue elasticity in various pathologies to yield qualitative and quantitative information that can be used for diagnostic purposes. Measurements are acquired in specialized imaging modes that can detect tissue stiffness in response to an applied mechanical force (compression or shear wave). Ultrasound-based methods are of particular interest due to its many inherent advantages, such as wide availability including at the bedside and relatively low cost. Several ultrasound elastography techniques using different excitation methods have been developed. In general, these can be classified into strain imaging methods that use internal or external compression stimuli, and shear wave imaging that use ultrasound-generated traveling shear wave stimuli. While ultrasound elastography has shown promising results for non-invasive assessment of liver fibrosis, new applications in breast, thyroid, prostate, kidney and lymph node imaging are emerging.Here, we review the basic principles, foundation physics, and limitations of ultrasound elastography and summarize its current clinical use and ongoing developments in various clinical applications.

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“…Compared with indentometry, SWE is applicable to the skin of whole body. [7] Previous studies show wide application of SWE in liver fibrosis, [8] breast lesions, [9] prostate cancers, [10] and muscle property. [11] Recently, some preliminary study reported SWE can be used to diagnosis benign or malignant solid skin tumors.…”

Section: Introductionmentioning

confidence: 99%

Reproducibility analysis on shear wave elastography (SWE)-based quantitative assessment for skin elasticity

Sun¹,

Liang³

et al. 2017

Medicine

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Shear Wave Elastography (SWE) is an objective and non-invasive method widely used to quantify the tissue solidity. However, there are concerns about the accuracy of the skin SWE results due to the low signal-to-noise ratio (SNR) caused by subcutaneous fat, muscle and bone. This article analyzed the reproducibility of the result for skin SWE and therefore evaluated the availability of SME for skin elasticity involved diseases. Thirty volunteers (mean age: 37 ± 12 years) were selected. SWE were taken on the skin of abdomen and the middle tibia in order to assess the impact of fat, muscle and bone on SWE results. Skin in the area of anterior and lateral tibia marked with seven parallel lines, and each line indicated an identical thickness of the subcutaneous fat from 1–7 mm. Intra-class correlation coefficients (ICC) were used to evaluate the intra-observer and inter-observer reproducibility. The solidity of abdominal skin showed soft and small individual differences (12.4 ± 2.7 kPa), whereas high shear moduli (25–48 kPa) were observed in the skin above tibia and tibialis anterior muscle. When the subcutaneous fat was thicker than 3 mm (≥3), we obtained excellent intra-observer reproducibility (ICC range 0.78–0.98) and inter-observer reproducibility (ICC range 0.75–0.98). The thickness of subcutaneous fat could affect the reproducibility of skin SWE. The further study on skin SWE standardization should be taken.

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Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

Cited by 40 publications

References 25 publications

Accuracy of shear wave elastography for the diagnosis of prostate cancer: A meta-analysis

Accuracy of shear wave elastography for the diagnosis of prostate cancer: A meta-analysis

Ultrasound Elastography: Review of Techniques and Clinical Applications

Reproducibility analysis on shear wave elastography (SWE)-based quantitative assessment for skin elasticity

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