Breast scanning apparatus using photoacoustic ultrasonic wave
A breast scanning apparatus which uses photoacoustic ultrasonic waves is provided. The breast scanning apparatus includes a body which includes a first hole and a second hole which are horizontally parallel to each other; a first compression plate and a second compression plate, at least one of which is movable in a vertical direction with respect to the body; a first sliding plate and a second sliding plate, which are respectively installed on surfaces of the first compression plate and the second compression plate and are facing each other and are movable in a first direction; a first ultrasonic transducer array in the first compression plate and facing the first sliding plate; and a first laser head in the first compression plate, which is movable in a second direction which is perpendicular to the first direction.
1. A breast scanning apparatus which uses photoacoustic ultrasonic waves, the breast scanning apparatus comprising:
a body which includes a first hole and a second hole which are horizontally parallel to each other;
a first compression plate which is disposed at the first hole and a second compression plate which is disposed at the second hole, at least one of the first compression plate and the second compression plate being installed so as to be movable in a direction connecting the first hole and the second hole;
a first sliding plate which is installed on a surface of the first compression plate and a second sliding plate which is installed on a surface of the second compression plate so as to face the first sliding plate, each of the first sliding plate and the second sliding plate being movable in a first direction which is parallel to the surface thereof and perpendicular to the direction connecting the first hole and the second hole;
a first ultrasonic transducer array which is disposed inside the first compression plate and which faces the first sliding plate;
a first laser head which is disposed inside the first compression plate and which is movable in a second direction which is perpendicular to the first direction;
a first horizontal moving device configured to cause the first sliding plate to slide on the surface of the first compression plate in the first direction; and
a second horizontal moving device configured to cause the second sliding plate to slide on the surface of the second compression plate in the first direction.
2. The breast scanning apparatus of claim 1 , wherein the first horizontal moving device comprises:
a first rack gear arranged on a surface of the first sliding plate which surface is opposite from a surface which faces the second sliding plate; and
a first pinion gear arranged to be combined with the first rack gear,
and wherein the second horizontal moving device comprises:
a second rack gear arranged on a surface of the second sliding plate which surface is opposite from a surface which faces the first sliding plate; and
a second pinion gear arranged to be combined with the second rack gear.
3. The breast scanning apparatus of claim 1 , further comprising:
a second ultrasonic transducer array which is disposed inside the second compression plate and faces the second sliding plate; and
a second laser head which is disposed inside the second compression plate and which is movable in the second direction.
4. The breast scanning apparatus of claim 3 , wherein each of the first ultrasonic transducer array and the second ultrasonic transducer array includes a respective plurality of ultrasonic transducers, and
each of the each respective plurality of ultrasonic transducers includes at least one from among a piezoelectric micromachined ultrasonic transducer (pMUT), a capacitive micromachined ultrasonic transducer (cMUT), a magnetic micromachined ultrasonic transducer (mMUT), and an optical ultrasonic detector.
5. The breast scanning apparatus of claim 3 , further comprising:
a first laser head driver configured to scan the first laser head in a horizontal direction, and a second laser head driver configured to scan the second laser head in the horizontal direction.
6. The breast scanning apparatus of claim 5 , wherein the first laser head driver comprises:
a first continuous belt which is connected so as to fix the first laser head;
a first guiding rod, which is configured to guide a scanning of the first laser head and to facilitate a sliding of the first laser head; and
a first driver, which is configured to support and revolve the first continuous belt, and
the second laser head driver comprises:
a second continuous belt which is connected so as to fix the second laser head;
a second guiding rod, which is configured to guide a scanning of the second laser head and to facilitate a sliding of the second laser head; and
a second driver, which is configured to support and revolve the second continuous belt.
7. The breast scanning apparatus of claim 1 , wherein the first laser head is configured to irradiate a pulse laser beam which is supplied by a laser generator.
8. The breast scanning apparatus of claim 7 , wherein the pulse laser beam has a pulse width which falls in a range of between 1 picosecond and 1000 nanoseconds.