Ultrasonic diagnostic apparatus

An ultrasonic diagnostic apparatus, comprising:

• a single transmitter-receiver for transmitting an ultrasonic pulse and obtaining echo data;
• a tomogram generator for forming a tomogram of a blood vessel based on the echo data;
• a measurement line setting device for setting a measurement line in the tomogram;
• a blood vessel diameter calculator for calculating a blood vessel diameter along the measurement line;
• a sample gate generator for automatically setting a sample gate using the measurement line as a reference;
• a blood velocity calculator for calculating blood velocity at the sample gate;
• a blood pressure calculator for converting a change of the blood vessel diameter into a change of blood pressure using a maximum blood pressure value input and a minimum blood pressure value input, as a reference;
• and
• a wave intensity calculator for calculating a wave intensity based on the blood pressure and the blood velocity.

An ultrasonic diagnostic apparatus, comprising:

• a single transmitter-receiver for transmitting an ultrasonic pulse and obtaining echo data;
• a calculator for calculating blood velocity at a measurement part within a blood vessel based on the echo data;
• a calculator for calculating a time differential of the blood velocity;
• a calculator for calculating blood pressure at the measurement part based on one or both of the echo data and a bio-measurement signal;
• a calculator for calculating a time differential of the blood pressure;
• and
• a calculator for multiplying the time differential of the blood velocity and the time differential of the blood pressure at a same moment to thereby calculate wave intensity.

An ultrasonic diagnostic apparatus, comprising:

• a single transmitter-receiver for setting a beam direction passing across a blood vessel, transmitting an ultrasonic pulse in the beam direction, and obtaining echo data in the beam direction;
• a blood velocity calculator for calculating blood velocity based on the echo data;
• a blood vessel wall specifying circuit for specifying positions of an anterior wall and a posterior wall of the blood vessel based on the echo data obtained in the beam direction;
• a blood vessel diameter calculator for calculating a blood vessel diameter based on the positions of the anterior wall and the posterior wall of the blood vessel;
• a blood pressure calculator for converting a change over time of the blood vessel diameter to a change over time of a blood pressure value;
• and
• a wave intensity calculator for calculating a wave intensity from a change over time of the blood velocity and the change over time of the blood pressure value.

An ultrasonic diagnostic apparatus, comprising:

• a blood velocity calculator for preparing a blood velocity graph showing change over time of velocity of blood flowing in a blood vessel based on echo data;
• a blood vessel diameter calculator for preparing a blood vessel diameter graph showing a change as time passes of a blood vessel diameter based on the echo data;
• a wave intensity calculator for calculating a wave intensity from the blood velocity and the blood vessel diameter at a same moment and preparing a wave intensity graph showing a change as time passes of the wave intensity;
• and
• a display device for simultaneously displaying the blood velocity graph, the blood vessel diameter graph, and the wave intensity graph.

An ultrasonic diagnostic apparatus, comprising:

• a tomogram generator for forming a tomogram of a blood vessel based on echo data;
• a blood velocity calculator for preparing a blood velocity graph showing change over time of the velocity of blood flowing in the blood vessel based on the echo data;
• a blood vessel diameter calculator for preparing a blood vessel diameter graph showing change over time of a blood vessel diameter based on the echo data;
• a wave intensity calculator for preparing a wave intensity graph showing change over time of the wave intensity based on the velocity of blood flowing in the blood vessel and the blood vessel diameter;
• and
• a display device for simultaneously displaying the tomogram of the blood vessel, the blood velocity graph, the blood vessel diameter graph.

An ultrasonic diagnostic apparatus, comprising:

• a single transmitter-receiver for transmitting and receiving a ultrasonic pulse for ultrasonic beam scanning to obtain a received signal;
• a first beam direction setting circuit for determining a first beam direction orthogonal to a blood vessel wall, based on the received signal, to set the first beam direction to the transmitter-receiver;
• a displacement measurement circuit for measuring displacement of a blood vessel wall using the received signal corresponding to the first beam direction;
• and
• a wave intensity calculator for calculating a wave intensity using the displacement of the blood vessel wall.