Acoustic radiation force impulse (ARFI) imaging: Characterizing the mechanical properties of tissues using their transient response to localized force

2004 ◽  
Vol 115 (5) ◽  
pp. 2411-2411
Author(s):  
Kathryn R. Nightingale ◽  
Mark L. Palmeri ◽  
Amy N. Congdon ◽  
Kristin D. Frinkely ◽  
Gregg E. Trahey
Keyword(s):  
Mechanical Properties ◽  
Transient Response ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Arfi 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

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.

Acoustic Radiation Force Impulse (ARFI) Imaging of the Gastrointestinal Tract

2005 ◽  
Vol 27 (2) ◽  
pp. 75-88 ◽  
Author(s):  
Mark L. Palmeri ◽  
Kristin D. Frinkley ◽  
Liang Zhai ◽  
Marcia Gottfried ◽  
Rex C. Bentley ◽  
...  
Keyword(s):  
Radiation Treatment ◽  
Acoustic Radiation ◽  
Ex Vivo ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
High Intensity Focused Ultrasound ◽  
Acoustic Radiation Force Impulse ◽  
Gi Tract ◽  
Small Bowel Tumors ◽  
Arfi Imaging

The evaluation of lesions in the gastrointestinal (GI) tract using ultrasound can suffer from poor contrast between healthy and diseased tissue. Acoustic Radiation Force Impulse (ARFI) imaging provides information about the mechanical properties of tissue using brief, high-intensity, focused ultrasound to generate radiation force and ultrasonic correlation-based methods to track the resulting tissue displacement. Using conventional linear arrays, ARFI imaging has shown improved contrast over B-mode images when applied to solid masses in the breast and liver. The purpose of this work is to (1) investigate the potential for ARFI imaging to provide improvements over conventional B-mode imaging of GI lesions and (2) demonstrate that ARFI imaging can be performed with an endocavity probe. ARFI images of an adenocarcinoma of the gastroesophageal (GE) junction, status-post chemotherapy and radiation treatment, demonstrate better contrast between healthy and fibrotic/malignant tissue than standard B-mode images. ARFI images of healthy gastric, esophageal, and colonic tissue specimens differentiate normal anatomic tissue layers (i.e., mucosal, muscularis and adventitial layers), as confirmed by histologic evaluation. ARFI imaging of ex vivo colon and small bowel tumors portray interesting contrast and structure that are not as well defined in B-mode images. An endocavity probe created ARFI images to a depth of over 2 cm in tissue-mimicking phantoms, with maximum displacements of 4 μm. These findings support the clinical feasibility of endocavity ARFI imaging to guide diagnosis and staging of disease processes in the GI tract.

Acoustic Radiation Force Impulse (ARFI) imaging for the distinction between benign and malignant thyroid nodules

2015 ◽  
Vol 120 (6) ◽  
pp. 579-583 ◽  
Author(s):  
Cihad Hamidi ◽  
Cemil Göya ◽  
Salih Hattapoğlu ◽  
Ömer Uslukaya ◽  
Memik Teke ◽  
...  
Keyword(s):  
Thyroid Nodules ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Arfi Imaging
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