Elastografiska

Elastografiska is a term used to refer to elastography, a family of medical imaging techniques that map the elastic properties of soft tissues. By measuring tissue stiffness, elastography provides indirect information about tissue composition and pathology, complementing conventional imaging.

Most methods induce tissue displacement and track wave propagation or deformation. Ultrasound elastography uses the transducer to generate strain or shear waves and reports stiffness in kilopascals; magnetic resonance elastography (MRE) uses externally applied vibrations with MRI to produce stiffness maps.

Key techniques include transient elastography (FibroScan), shear wave elastography, strain elastography, and MR elastography. Applications include liver fibrosis staging, breast lesion characterization, thyroid nodules, and evaluation of other organs.

Advantages include non-invasive, real-time or quantitative measurements depending on modality. Limitations involve operator dependence for ultrasound, variability across devices, and factors such as inflammation, edema, obesity that can bias results. Standardization remains ongoing.

Since the 1990s elastography has become part of routine imaging in many centers, especially for liver disease, with ongoing development aimed at wider organ coverage, improved accuracy, and better integration with other imaging data.