ARFI ELASTOGRAPHY IN THE DIAGNOSIS OF FOCAL BREAST LESIONS

2017 ◽  
pp. 23-29
Author(s):  
Thi Kim Yen Vo ◽  
Phuoc Bao Quan Nguyen ◽  
Thanh Thao Nguyen
Keyword(s):  
Malignant Tumors ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Benign Tumors ◽  
Breast Lesions ◽  
Focal Lesions ◽  
Arfi Elastography ◽  
2D Ultrasound

Objective: To describe the sonographic characteristics of the focal breasst lesions using Acoustic Radiation Force Impulse Imaging (ARFI), and to evaluate the role of ARFI technique in combination with 2D Ultrasound in diagnosing focal breast lesions. Methods: 2D Ultrasound and ARFI Elastography were caried out in 52 patients who have focal lesions of breast. Images of 2D Ultrasound were classified according to ACR 2013. ARFI Elastography was performed by 2 techniques: “Virtual Touch HD tissue imaging” in order to image of strain distribution and “Virtual Touch HD Tissue quantification imaging” to measure the shear wave velocity (SWV) in the tissue. Strain distribution was classified according to Ako Itoh scale. SWV were measured in 4 positions: internal the lesion (SWVi), boundary zone (SWVb), glandular tissue and fatty tissue next to lesion (SWg and SWf). According to the results of pathology, we determine and compare the value between 2D Ultrasound plus ARFI elastography and 2D Ultrasound alone. Results: 52 patients with breast focal lesions: 22 malignant tumors and 30 benign tumors. Mean Ako Itoh scale of benign tumors were 2.19 ± 1.13 and malignant tumors were 4.72 ± 0.55; the cut-off value was between E3 và E4. SWVi, SWVb, SWVf, SWVg of benign tumors were lower than malignant tumors with cut-off values were 3.32 m/s; 6.01m/s; 1.08m/s; 2.37m/s, respectively. 2D Ultrasound plus ARFI Elastography: Se 100%, Sp 90%, PPV 88%, NPV 100%, Acc 94.2% (p<0.001, K = 0.884). Conclutions: In addition to the morphologic characteristics of breast lesions, ARFI provides information about lesion’s tissue elasticity, which can be a useful tool to differentitate malignant lesions from benign ones. Key words: elastography, focal breast lesions, Acoustic Radiation Force Impulse Imaging

Breast Lesions Evaluated by Color-Coded Acoustic Radiation Force Impulse (ARFI) Imaging

2016 ◽  
Vol 42 (7) ◽  
pp. 1464-1472 ◽  
Author(s):  
JianQiao Zhou ◽  
ZhiFang Yang ◽  
WeiWei Zhan ◽  
JingWen Zhang ◽  
Na Hu ◽  
...  
Keyword(s):  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Breast Lesions ◽  
Arfi Imaging

Acoustic radiation force impulse (ARFI) elastography to asses maternal and foetal structures in pregnant ewes

2018 ◽  
Vol 54 (3) ◽  
pp. 498-505 ◽  
Author(s):  
Priscila D. A. Silva ◽  
Ricardo Andrés R. Uscategui ◽  
Victor J. C. Santos ◽  
Augusto R. Taira ◽  
Renata S. G. Mariano ◽  
...  
Keyword(s):  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Arfi Elastography

scholarly journals Acoustic Radiation Force Impulse (ARFI) Elastography in Autoimmune and Cholestatic Liver Diseases

2019 ◽  
Vol 18 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Ruediger S. Goertz ◽  
Luise GaBmann ◽  
Deike Strobel ◽  
Dane Wildner ◽  
Barbara Schellhaas ◽  
...  
Keyword(s):  
Liver Diseases ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Arfi Elastography

Performance of Acoustic Radiation Force Impulse Elastography for Staging Liver Fibrosis in Patients With Chronic Hepatitis C After Viral Eradication

2019 ◽  
Vol 70 (1) ◽  
pp. 114-122 ◽  
Author(s):  
Sheng-Hung Chen ◽  
Hsueh-Chou Lai ◽  
I-Ping Chiang ◽  
Wen-Pang Su ◽  
Chia-Hsin Lin ◽  
...  
Keyword(s):  
Chronic Hepatitis ◽  
Hepatitis C ◽  
Liver Fibrosis ◽  
Chronic Hepatitis C ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Viral Eradication ◽  
Arfi Elastography

Abstract Background Data on noninvasive liver fibrosis staging after viral eradication are unclear. This histology-based study validated the performance of liver stiffness (LS) measurements after viral eradication. Methods Consecutive participants with chronic hepatitis C (CHC) who received concomitant LS measurements through acoustic radiation force impulse (ARFI) elastography and percutaneous liver biopsy were prospectively screened and analyzed. Results Of the 644 patients, 521 (80.9%) underwent a biopsy at treatment baseline, and the remaining 123 (19.1%) underwent a biopsy at 3 years (median; interquartile range, 0.1) after the sustained virological response (SVR) to pegylated interferon–based and direct-acting antiviral treatments. The proportions of histological fibrosis stages did not differ significantly between the pretreatment and post-SVR groups (P = .0615). However, the LS values differed significantly (P &lt; .0001). The median LS values (presented as shear wave velocities in meters per second) were 1.51 (0.92) for the pretreatment group and 1.22 (0.77) for the post-SVR group. The cutoffs (areas under the receiver operating characteristic curve, obtained using the bootstrap method) to dichotomize between METAVIR fibrosis stage F1 versus stages F2–F4, F1–F2 versus F3–F4, and F1–F3 versus F4 were 1.47 (0.8333, 95% confidence interval [CI] 0.7981–0.8663), 1.81 (0.8763, 95% CI 0.8376–0.9107), and 1.86 (0.8811, 95% CI 0.8378–0.9179) in the pretreatment group, respectively, and 1.22 (0.7872, 95% CI 0.7001–0.8624), 1.59 (0.8808, 95% CI 0.8034–0.9422), and 1.75 (0.9018, 95% CI 0.8201–0.9644) in the post-SVR group, respectively. Conclusions The performance of LS measurements through ARFI elastography is promising to determine the liver fibrosis stage on necroinflammation-resolved histology in CHC after viral eradication.

Clinical application of Acoustic Radiation Force Impulse Imaging with Virtual Touch IQ in breast ultrasound: diagnostic performance and reproducibility of a new technique

2016 ◽  
Vol 58 (2) ◽  
pp. 140-147 ◽  
Author(s):  
Panagiotis Kapetas ◽  
Katja Pinker-Domenig ◽  
Ramona Woitek ◽  
Paola Clauser ◽  
Maria Bernathova ◽  
...  
Keyword(s):  
Sensitivity And Specificity ◽  
Clinical Setting ◽  
Diagnostic Performance ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Breast Lesions ◽  
Cutoff Value ◽  
Arfi Imaging

Background Virtual Touch IQ (VTIQ) is a novel technique of quantitative sonoelastography that applies acoustic radiation force impulse (ARFI). Purpose To evaluate breast ARFI imaging with VTIQ in the clinical setting, with regard to reproducibility and diagnostic performance, and to specify cutoff limits for the differentiation of benign and malignant lesions. Material and Methods This retrospective study included 83 patients with 85 breast lesions (51 benign, 34 malignant) who received ARFI imaging with VTIQ. Two independent ARFI measurements of each lesion were performed and shear wave velocities (SWV) of the lesion and the adjacent tissues were measured. A lesion-to-fat velocity ratio (L/F Ratio) was calculated for each lesion. Diagnostic performance of SWV measurements and L/F Ratios was evaluated with receiver operating curve (ROC) analysis. The intraclass correlation coefficient and Bland–Altman plots were used to evaluate measurement reproducibility. Results All measurements showed equal diagnostic performance, as measured by the area under the ROC curve (0.853 for SWV, 0.882 for the L/F Ratio). At a cutoff value of 3.23 m/s, sensitivity and specificity were 82.4% and 80.4%, respectively. An L/F Ratio cutoff value of 2.23 revealed a sensitivity and specificity of 89.7% and 76.5%. The reproducibility of the SWV measurements was moderate (limits of agreement, 40.3–44.4%) and higher than that of the L/F Ratios (54.5–60.2%). Conclusion ARFI imaging with VTIQ is a novel, moderately reproducible, quantitative elastography technique, which provides useful information for the differentiation of benign and malignant breast lesions in the clinical setting.

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