| Benign cystic teratomas characteristically show an anechoic cystic component and a shadowing density that corresponds to a dermoid plug. |
| Initially on ultrasound it will appear as an anechoic suprarenal mass with variable compression and displacement of the kidney. |
| An anechoic chamber is a room in which the floor, ceiling, and all walls are covered with sound-absorbent acoustical wedges. |
| In such cases, ultrasonography reveals a hypoechoic or anechoic structure protruding from a segmentally thickened colonic wall. |
| 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. |
| Sonographically, dermoids can range from totally anechoic to a hyperechoic mass. |
