On ultrasound, the diagnosis of cystic lymphangioma is suggested by the presence of a well-marginated, anechoic lesion, typically located at the suprarenal area, which can show shadows or echoes when calcifications are present.
The lab includes a fully anechoic chamber for engine and transmission studies as well as a semi-anechoic chamber with a 160 hp chassis-dyno for full vehicle testing.
Initially on ultrasound it will appear as an anechoic suprarenal mass with variable compression and displacement of the kidney.
My goal in the anechoic chamber was to determine what effect the front-panel controls have on the signal, and if they would allow the loudspeaker to be tuned to produce a flat response across the audio spectrum.
The fact that this has pencil thin walls, is anechoic (has no echoes coming from it), and shows through transmission shows that this is a benign cyst.
1.1(of a coating or material) tending to deaden sound.
（涂层，材料）消声的
the Russians treat their submarines with anechoic coatings to reduce sonar returns
Example sentencesExamples
To achieve this low acoustic signature, the Virginia incorporates newly designed anechoic coatings, isolated deck structures and a new design of propulsor.
Definition of anechoic in US English:
anechoic
adjectiveˌanəˈkōik
technical
1Free from echo.
〈技〉无回声的
an anechoic chamber
无回声室，消声室。
Example sentencesExamples
Initially on ultrasound it will appear as an anechoic suprarenal mass with variable compression and displacement of the kidney.
On ultrasound, the diagnosis of cystic lymphangioma is suggested by the presence of a well-marginated, anechoic lesion, typically located at the suprarenal area, which can show shadows or echoes when calcifications are present.
My goal in the anechoic chamber was to determine what effect the front-panel controls have on the signal, and if they would allow the loudspeaker to be tuned to produce a flat response across the audio spectrum.
The lab includes a fully anechoic chamber for engine and transmission studies as well as a semi-anechoic chamber with a 160 hp chassis-dyno for full vehicle testing.
The fact that this has pencil thin walls, is anechoic (has no echoes coming from it), and shows through transmission shows that this is a benign cyst.
1.1(of a coating or material) tending to deaden sound.
（涂层，材料）消声的
Example sentencesExamples
To achieve this low acoustic signature, the Virginia incorporates newly designed anechoic coatings, isolated deck structures and a new design of propulsor.