Imaging apparatus for diagnosis and control method thereof

摘要

An imaging apparatus for diagnosis is connected with a probe including a transmitting and receiving unit transmitting a light transmitted from a light source continuously to the inside of a body cavity and concurrently, receiving a reflected light continuously from the inside of the body cavity, and generates a tomographic image inside the body cavity based on the obtained reflected light by obtaining the reflected light from the transmitting and receiving unit while rotating the transmitting and receiving unit. The apparatus includes a mechanism for extracting intensity of the reflected light obtained by a phenomenon that the light transmitted to the transmitting and receiving unit is reflected at the transmitting and receiving unit; and a mechanism for judging whether or not the extracted intensity of each reflected light at each rotary angle of the transmitting and receiving unit lies in a range of a predetermined variation width.

主权项

1. An imaging apparatus for diagnosis comprising:
a probe including a transmitting and receiving unit adapted to transmit light transmitted from a light source continuously to an inside of a body cavity and concurrently, adapted to receive reflected light continuously from the inside of the body cavity, and the transmitting and receiving unit including a lens and a lens surface; a signal processing unit configured to generate a tomographic image of inside the body cavity based on the received reflected light from the transmitting and receiving unit while rotating the transmitting and receiving unit, a photo coupling unit configured to carry out an optical transmission between a rotational optical path of the imaging apparatus and a fixed optical path of the imaging apparatus; a lens surface reflected signal extracting unit configured to extract a signal intensity of a signal reflected from the lens surface within the reflected lights received by the transmitting and receiving unit at respective rotary angles of the transmitting and receiving unit during rotation; and a judgment unit configured to judge whether or not an optical axis of the fixed optical path at the photo coupling unit is deviated with respect to a rotation axis of the rotational optical path at the photo coupling unit by confirming whether or not the signal intensity of each signal reflected from the lens surface extracted by the lens surface reflected signal extracting unit at each rotary angle of the transmitting and receiving unit lies in a predetermined range.