Ultrasonic diagnostic apparatus and method of controlling the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorsTakuya Sasaki, Akihiro Kakee
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Abstract
In an ultrasonic diagnostic apparatus, a scan controller inputs a trigger signal corresponding to heartbeat period, scans an ultrasonic beam such that a particular diagnostic region of a body under examination is scanned with the ultrasonic beam a plurality of times in response to each trigger signal, and controls the scan repetition period by controlling the pulse repetition period of the transmission pulse. An image generation unit generates an image corresponding to each of the pulse repetition periods. The scan controller controls the pulse repletion period such that an integral multiple of the scan repetition period is equal to a reference value determined based on the period of the trigger signal.
Claims16
An ultrasonic diagnostic apparatus comprising:
- an ultrasonic probe configured to output a transmission pulse while scanning an ultrasonic beam in a main scanning direction and a sub scanning direction and detect a reflection signal from the inside of a body under examination;
- a scan controller configured to input a trigger signal output every heartbeat period from the outside, scan the ultrasonic beam such that a particular diagnostic region of the body under examination is scanned with the ultrasonic beam a plurality of times for a period from one trigger signal to a next trigger signal, and control the scan repetition period by controlling the pulse repetition period of the transmission pulse;
- and
- an image generation unit configured to generate an image corresponding to each of the scan repetition periods,
- the scan controller being configured to determine the pulse repletion period such that an integral multiple of the scan repetition period is equal to a reference value determined based on the period of the trigger signal, and control the pulse repletion period according to the determination.
A method of controlling an ultrasonic diagnostic apparatus, comprising the steps of:
- (a) outputting a transmission pulse while scanning an ultrasonic beam in a main scanning direction and a sub scanning direction and detecting a reflection signal from the inside of a body under examination;
- (b) inputting a trigger signal output every heartbeat period from the outside, scanning the ultrasonic beam such that a particular diagnostic region of the body under examination is scanned with the ultrasonic beam a plurality of times for a period from one trigger signal to a next trigger signal, and controlling the scan repetition period by controlling the pulse repetition period of the transmission pulse;
- and
- (c) generating an image corresponding to each of the scan repetition periods,
- wherein in the step (b), the pulse repletion period is determined such that an integral multiple of the scan repetition period is equal to a reference value determined based on the period of the trigger signal, and the pulse repletion period is controlled according to the determination.
Dependencies are inferred from the claim text.