Popover
Popover
Popover (/pɒpˈoʊvər/) is a term used in the medical field, particularly in the context of Ultrasound imaging. It is a phenomenon that occurs when the ultrasound beam encounters a structure with a significantly different Acoustic Impedance than the surrounding tissue, causing a shadow or bright echo to appear on the ultrasound image.
Etymology
The term "popover" is derived from the English words "pop" and "over", which metaphorically describes the sudden appearance (or popping over) of the echo or shadow on the ultrasound image.
Related Terms
- Ultrasound: A diagnostic imaging technique used to visualize muscles, tendons, and many internal organs, to capture their size, structure, and any pathological lesions with real-time tomographic images.
- Acoustic Impedance: A measure of the resistance that a system presents to the acoustic flow resulting from an acoustic pressure applied to the system.
- Echogenicity: The ability of a tissue to create an echo, or return the ultrasound waves back to the transducer.
- Anisotropy: The property of being directionally dependent, as opposed to isotropy, which implies identical properties in all directions.
External links
- Medical encyclopedia article on Popover
- Wikipedia's article - Popover
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