elastography

(redirected from elasticity imaging)

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.
Mentioned in ?
References in periodicals archive ?
Most of the reported elastography techniques focus currently on three fields: (l) Optimization methods in elasticity imaging; (2) Freehand palpation elasticity imaging; and (3) Real-time elasticity imaging.
In a recent elasticity imaging study, doctors studied 166 suspected breast tumors in 99 women scheduled for biopsies.
New techniques such as tissue elasticity imaging, hyperspectral imaging, adaptive patient-specific imaging and 3D/4D imaging and vein viewing all leverage the numerous capabilities of high performance, low power devices from TI.
This article will review the physics behind the elastographic technique, the utility of elasticity imaging in clinical practice, the implications of EI on patient care, and possible advances in elastography in the near future.
Thirteen contributed chapters begin with the fundamentals, addressing multiwave imaging to elasticity imaging, and speckle interferometry and nonlinear methods.
Biopsies confirmed that elasticity imaging correctly identified all 17 malignant lesions in the study group and 105 of 106 benign lesions.
Using elasticity imaging, researchers correctly identified both cancerous and harmless lesions in nearly all of the cases studied.
ProUroCare's patented tactile elasticity imaging technology, which uses a handheld pressure-sensing rectal probe and sophisticated image construction software to produce its prostate maps, represents a new imaging modality distinct from traditional ultrasound imaging.
Overall, elasticity imaging increases the specificity of ultrasound by measuring the compressibility and mechanical properties of a lesion.
Applications include cardiovascular elasticity imaging, harmonic motion imaging in high intensity focused ultrasound (as used in breast cancer detection, and characterization of skeletal muscle elasticity using magnetic resonance elastography.
Elasticity imaging measures the mechanical properties of tissue providing additional information for enhanced diagnostic decision-making.
The new ACUSON Antares system, premium edition, will offer a breakthrough in breast ultrasound technology with a revolutionary elasticity imaging technology package, which is expected to enable physicians to accurately distinguish characteristics of breast lesions, more clearly demonstrating relative tissue stiffness or hardness, infiltration, and cystic regions.