elastography


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elastography

A non-invasive technique in which the elasticity of soft tissue is assessed—usually by ultrasonography—during application of mechanical compression or vibration. Because cancer is 5 to 28 times stiffer than normal surrounding soft tissue, strain images of tissues with cancer have been used to detect and classify tumours; the technique may be used in the future to improve diagnostic accuracy and provide surgical guidance.

elastography

(i-las″tog′ră-fē)
A procedure to diagnose malignant tissue by imaging with ultrasonography. Since healthy tissue is significantly less stiff than malignant tissue, the imaged tissue may be distorted to differing degrees, and thus it may be possible to distinguish a malignancy in the ultrasound image, e.g., in the diagnosis of breast cancers.
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Many studies mentioned possible flaws in evaluation of malignancy by elastography. Calcifications and necrotic or cystic change have been noted to interfere with elastographic readings; however, this is less of a problem in cervical lymph nodes in the setting of PTC, where these findings would be highly specific for malignancy.
Accordingly, the so-called Baveno VI criteria stated that patients with LSM < 20kPa (assessed by transient elastography (TE)) and with normal platelet count (PLT > 150,000/[m.sup.3]) can be considered very unlikely to have HVR (based on a reasonable risk of 5% of missed varices requiring treatment).
In the past 2 decades, EUS elastography has emerged as a noninvasive tool for estimating the mechanical characteristics of tissues [5].
Many radiologic methods for staging liver fibrosis, including ultrasound-based and vibration-controlled transient elastography (VCTE), have recently been increasingly used in clinical practice instead of liver biopsy.
review paper "Transient Elastography for Significant Liver Fibrosis and Cirrhosis in Chronic Hepatitis B" performed the meta-analysis describing diagnostic accuracy of transient elastography (TE) for predicting CHB-related fibrosis.
Due to these reasons, a main purpose of this study was to verify the hypothesis of a tension change in the patellar tendon (ligamentum patellae) after application of HIMS, using 2D shear-wave ultrasound elastography.
As a new tool to measure the tissue stiffness, US elastography has been utilized in assessing the thyroid cancer among thyroid nodules [10].
This edition has new chapters on general MR safety, contrast safety, MR elastography, MR relaxometry, and motion correction; 100 new board-style questions in a separate chapter; and discussion of susceptibility-weighted imaging, including other potential spin-off uses beyond hemorrhage detection.
TEHRAN (FNA)- To determine why more aerobically fit individuals have better memories, scientists used magnetic resonance elastography (MRE), which measures the elasticity of organs, and found that fit individuals had a firmer, more elastic hippocampus-a region of the brain associated with memory.
Objective: In this study, the contribution of ultrasound (US) elastography in the characterization of solid breast masses was investigated.
The presence of asthma did not have a significant impact on the elastography measurements (p>0.05).
For those with chronic HCV infection, noninvasive controlled transient elastography (FibroScan) was used to determine the presence of fibrosis or cirrhosis.