| 摘要 |
Apparatus for mapping a surface of a cavity (50) within a body of a subject includes an elongate probe (30), having a longitudinal axis and including a distal portion adapted for insertion into the cavity. A plurality of acoustic transducers (46a-c) are distributed along the longitudinal axis over the distal portion of the probe (30), which transducers are adapted to be actuated individually to emit acoustic waves while the probe is in the cavity (50), and are further adapted to receive the acoustic waves after reflection of the waves from the surface of the cavity and to generate, responsive to the received waves, electrical signals indicative of times of flight of the waves. |
