2D shear-wave ultrasound elastography (SWE) evaluation of ablation zone following radiofrequency ablation of liver lesions: is it more accurate?

Bo, Xiao W; Li, Xiao L; Xu, Hui; Guo, Le Hang; Li, Dan D; Liu, Bo J; Wang, Dan; He, Ya Ping; Xu, Xiao

doi:10.1259/bjr.20150852

Cited by 12 publications

(2 citation statements)

References 19 publications

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“…This becomes the theoretical basis for our use of elastography to detect lesions. Xu et al [ 28 ] used SWE to measure the elasticity of RFA lesions and indicated it could qualitatively and quantitatively measure the ablation zones. Tian et al [ 29 ] conducted research on measuring the elasticity of the extracorporeal liver after ablation, which indicated that the SWE measurement of hardness was not affected by the gas, and it could indicate the region of the ablation zone clearly.…”

Section: Discussionmentioning

confidence: 99%

Real-Time Elastography versus Shear Wave Elastography on Evaluating the Timely Radiofrequency Ablation Effect of Rabbit Liver: A Preliminary Experimental Study

Shi

Liao

et al. 2023

Diagnostics

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Purpose: to evaluate and monitor the timely thermal ablation changes of rabbit liver by using two elastographic methods—real-time elastography (RTE) and shear wave elastography (SWE)—as compared to contrast-enhanced ultrasound (CEUS) and physical specimens. Materials and Methods: 20 ablation zones were created in the livers of 20 rabbits using radiofrequency ablation (RFA). After the ablation, RTE and SWE were used to measure the elastic properties of the twenty ablation zones. The consistency of efficacy evaluation for RTE and SWE measurements was analyzed using the Bland–Altman test. The areas of the thermal ablation zones were also measured and compared according to the images provided by RTE, SWE, CEUS, and gross physical specimen measurement. Results: RTE and SWE could clearly display the shape of RFA ablation zones within one hour after the ablation. The average elasticity ratio for the ablation zone measured by RTE was 3.41 ± 0.67 (2.23–4.76); the average elasticity value measured by SWE was 50.7 ± 11.3 kPa (33.2–70.4 kPa). The mean areas of the ablation zones measured with RTE, SWE, gross specimen, and CEUS were 1.089 ± 0.199 cm2, 1.059 ± 0.201 cm2, 1.081 ± 0.201 cm2, and 3.091 ± 0.591 cm2, respectively. The Bland–Altman test showed that RTE and SWE have great consistency. Area measurements by CEUS were significantly larger than those of the other three methods (p < 0.05). Conclusion: RTE and SWE are both able to accurately confirm the range of ablation zones shortly after the ablation for rabbit livers.

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Section: Discussionmentioning

confidence: 99%

Real-Time Elastography versus Shear Wave Elastography on Evaluating the Timely Radiofrequency Ablation Effect of Rabbit Liver: A Preliminary Experimental Study

Shi

Liao

et al. 2023

Diagnostics

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“…A total of 884 patients were enrolled in the study, divided into the modeling group ( n = 720) and the validation group ( n = 164). These patients met specific criteria[ 16 , 17 ]: Conventional ultrasound identified one or more solid liver lesions with a maximum depth of less than 8 cm. In SWE quality mode, liver cancer lesions appeared green, indicating accurate SWE measurements.…”

Section: Methodsmentioning

confidence: 99%

Predicting hepatocellular carcinoma: A new non-invasive model based on shear wave elastography

Jiang,

Qian,

et al. 2024

World J Gastroenterol

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BACKGROUND Integrating conventional ultrasound features with 2D shear wave elastography (2D-SWE) can potentially enhance preoperative hepatocellular carcinoma (HCC) predictions. AIM To develop a 2D-SWE-based predictive model for preoperative identification of HCC. METHODS A retrospective analysis of 884 patients who underwent liver resection and pathology evaluation from February 2021 to August 2023 was conducted at the Oriental Hepatobiliary Surgery Hospital. The patients were divided into the modeling group (n = 720) and the control group (n = 164). The study included conventional ultrasound, 2D-SWE, and preoperative laboratory tests. Multiple logistic regression was used to identify independent predictive factors for malignant liver lesions, which were then depicted as nomograms. RESULTS In the modeling group analysis, maximal elasticity (Emax) of tumors and their peripheries, platelet count, cirrhosis, and blood flow were independent risk indicators for malignancies. These factors yielded an area under the curve of 0.77 (95% confidence interval: 0.73-0.81) with 84% sensitivity and 61% specificity. The model demonstrated good calibration in both the construction and validation cohorts, as shown by the calibration graph and Hosmer-Lemeshow test (P = 0.683 and P = 0.658, respectively). Additionally, the mean elasticity (Emean) of the tumor periphery was identified as a risk factor for microvascular invasion (MVI) in malignant liver tumors (P = 0.003). Patients receiving antiviral treatment differed significantly in platelet count (P = 0.002), Emax of tumors (P = 0.033), Emean of tumors (P = 0.042), Emax at tumor periphery (P < 0.001), and Emean at tumor periphery (P = 0.003). CONCLUSION 2D-SWE’s hardness value serves as a valuable marker for enhancing the preoperative diagnosis of malignant liver lesions, correlating significantly with MVI and antiviral treatment efficacy.

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Ultrasound Imaging Techniques for the Evaluation of Thermal Damage

Osborn

2023

The Application of Heat in Oncology

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2D shear-wave ultrasound elastography (SWE) evaluation of ablation zone following radiofrequency ablation of liver lesions: is it more accurate?

Cited by 12 publications

References 19 publications

Real-Time Elastography versus Shear Wave Elastography on Evaluating the Timely Radiofrequency Ablation Effect of Rabbit Liver: A Preliminary Experimental Study

Real-Time Elastography versus Shear Wave Elastography on Evaluating the Timely Radiofrequency Ablation Effect of Rabbit Liver: A Preliminary Experimental Study

Predicting hepatocellular carcinoma: A new non-invasive model based on shear wave elastography

Ultrasound Imaging Techniques for the Evaluation of Thermal Damage

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