The present invention relates to an ultrasonic diagnosis apparatus for creating an ultrasonic image from ultrasonic signals obtained by transmitting and receiving ultrasonic wave to or from an object.
One of ultrasonic diagnosis apparatus obtains a living body tomogram by irradiating ultrasonic pulses into a living body and receiving waves reflected from the living body tissue. Since the ultrasonic diagnosis apparatus can be used for the diagnosis of the inside of a living body noninvasively, the ultrasonic diagnosis apparatus is widely used for the external obstetric and gynecologic examinations.
In order to easily identify a contact position of an ultrasonic contact in the ultrasonic diagnosis apparatus, Japanese Unexamined Patent Application Publication No. 60-66735 discloses a diagnosed part displaying method for an ultrasonic diagnosis apparatus for displaying a sample three-dimensionally with the contour and multiple ellipses and displaying the position of an ultrasonic contact.
Furthermore, Japanese Unexamined Patent Application Publication No. 10-151131 discloses a method for displaying a CT image and an MRI image in accordance with the position being scanned by an ultrasonic contact instead of the display of a sample with an abstract body mark including the contour and multiple ellipses.
The positional relationship between an ultrasonic probe and a human body can be identified from a simple display of an object with the contour and multiple ellipses as disclosed in Japanese Unexamined Patent Publication Application No. 60-66735. However, the positional relationship between an organ being actually diagnosed and a probe is difficult for operators to understand.
Furthermore, an ultrasonic diagnosis apparatus connecting to a long and narrow, flexible ultrasonic endoscope to be inserted into an object does not allow operators to visually check the state of the ultrasonic endoscope. Therefore, the part being observed in the object is more difficult to identify, which is a problem, in comparison with an ultrasonic probe used in an external ultrasonic diagnosis apparatus disclosed in Japanese Unexamined Patent Application Publication No. 10-151131. Therefore, moving a tomogram toward a concerned area so as to render a desired section is very difficult in the ultrasonic endoscope, which significantly hinders the spread of ultrasonic endoscopes.
Also, an oval and spherical ultrasonic sonde easily swallowable from the mouth cavity, for example, of an object is connected to the ultrasonic diagnosis apparatus, the operator cannot visually check the state of the ultrasonic sonde. Therefore, the part being observed of the object is difficult to identify, which is another problem.
The present invention was made in view of these problems. It is an object of the present invention to provide an ultrasonic diagnosis apparatus which can render the part being observed of an object clearly and a desired tomogram easily by creating an ultrasonic image from ultrasonic signals obtained by using a long and narrow, flexible ultrasonic probe or oval and spherical ultrasonic sonde easily swallowable from the mouth cavity, for example, for generating ultrasonic signals within the object.
According to one aspect of the invention, there is provided an ultrasonic diagnosis apparatus including an ultrasonic-wave transmitting/receiving unit for transmitting and receiving ultrasonic wave to or from an object, an ultrasonic-wave scanning position detecting unit for detecting a position of the ultrasonic-wave transmitting/receiving unit for transmitting and receiving ultrasonic wave, an ultrasonic image creating unit for creating an ultrasonic image based on the ultrasonic signals, and a control for obtaining information relating to a part of the object corresponding to position information obtained by the ultrasonic-wave scanning position detecting unit from an anatomical data holding unit having human body anatomical data and displaying the information and the ultrasonic image on the same screen.
The other characteristics and advantages of the invention will be sufficiently apparent from the descriptions below.
FIGS. 1 to 3 relate to a first embodiment of the present invention;
FIGS. 4 to 9 relate to a second embodiment of the invention;
FIGS. 10 to 15 relate to a third embodiment of the present invention;
The present invention will be described in detail with reference to appended drawings.
A system construction according to this embodiment will be described which uses the mechanical scan type ultrasonic endoscope 1 to make use of a magnetic field for detecting the position of the mechanical scan type ultrasonic endoscope 1.
In order to detect a ultrasonic scan position of the mechanical scan type ultrasonic endoscope 1, the send coil 6 for generating a magnetic field is implemented at the inserting end of the mechanical scan type ultrasonic endoscope 1. Signals generated by the magnetic field by the implemented send coil 6 are output from the position/orientation detecting unit 5. The position/orientation detection unit 5 has the receive coil 7 for receiving the magnetic field from the send coil 6 implemented in the mechanical scan type ultrasonic endoscope 1. Furthermore, signals from the attitude detecting unit 8 attached to the object 4 for detecting the attitude of the object 4 are input to the position/orientation detecting unit 5.
Thus, the position/orientation detecting unit 5 outputs to the ultrasonic diagnosis apparatus 2 signals indicating the attitude of the object 4 and signals indicating the ultrasonic scan position of the mechanical scan type ultrasonic endoscope 1.
In the ultrasonic diagnosis apparatus 2 according to this embodiment, the ultrasonic transducer 17 at the inserting end is mechanically rotated by the shaft 16 of the mechanical scan type ultrasonic endoscope 1. Thus, ultrasonic signals are scanned circumferentially about the shaft 16. Through this operation, the ultrasonic image creating unit 10 creates an ultrasonic image from the obtained ultrasonic signals.
On the other hand, the schematic diagram data creating unit 11 extracts schematic diagram data to be read from the schematic diagram data storing unit 13 from attitude position signals indicating the attitude of the object 4 obtained from the position/orientation detecting unit 5 and the position for scanning ultrasonic wave in the mechanical scan type ultrasonic endoscope 1. In order to detect the position of the mechanical scan type ultrasonic endoscope 1, a reference position for starting the detection must be specified.
The reference position may be specified by turning on the keyboard 15 or the scope SW 9 when the inserting end of the mechanical scan type ultrasonic endoscope 1 reaches the position to be the reference position.
A position sensor 28 for detecting the position is provided at the inserting end of the mechanical scan type ultrasonic endoscope 1. Thus, even in the above-described case, the vertical relationship of the screen for scanning ultrasonic wave and schematic diagram data described later can be made in register precisely.
Referring back to
The schematic diagram on the right of
In
According to this embodiment, a schematic diagram is displayed together with an ultrasonic image such that the part of an object to be observed can be easily identified. Furthermore, a desired tomography plane can be easily extracted.
A second embodiment is substantially the same as the first embodiment, and only the differences will be described below. The same reference numerals are given to the same components here, and the description will be omitted.
The first embodiment applies a mechanical scan type ultrasonic endoscope but may alternatively apply an ultrasonic endoscope for electrically switching ultrasonic transducers for scanning. The second embodiment will be described below.
Like the first embodiment, a system construction according to this embodiment uses a magnetic field for position detection.
The ultrasonic diagnosis apparatus 2 according to this embodiment uses the electronic radial scan type ultrasonic endoscope 19 having an array of the ultrasonic transducers 18 including multiple ultrasonic transducers around an inserting axis and includes the send coil 6, which is a position sensor, at the inserting end.
The electronic scan type ultrasonic endoscope 19 electrically switches ultrasonic transducers for transmitting and receiving ultrasonic signals and scans ultrasonic wave on the circumference of the inserting axis. Therefore, like the mechanical scan type ultrasonic endoscope 1 according to the first embodiment, the upward displacement of an ultrasonic image due to the twist of the shaft 16 does not occur. By providing a position sensor at the inserting end, the ultrasonic scan position can be accurately identified. The electronic radial scan type ultrasonic endoscope 19 does not have to have the ultrasonic transducers 18 on the entire circumference of the inserting axis but may be partially lacking, such as in a fan shape of 270 degrees.
Like the first embodiment, the ultrasonic image creating unit 10 creates an ultrasonic image from ultrasonic signals obtained by scanning the ultrasonic transducers 18. Furthermore, the schematic diagram data creating unit 11 detects the attitude of the object 4 obtained from the position/orientation detecting unit 5 and the position for scanning ultrasonic wave of the electronic radial scan type ultrasonic endoscope 19. The schematic diagram data creating unit 11 reads from the schematic diagram data storing unit 13 schematic diagram data corresponding to the position for scanning ultrasonic wave by the electronic radial scan type ultrasonic endoscope 19. Then, the ultrasonic image obtained by the ultrasonic image creating unit 10 and the schematic diagram are displayed on the same screen.
Like the first embodiment, according to this embodiment, an ultrasonic image and a schematic diagram are displayed together. Thus, the part being observed of an object can be easily identified, and a desired tomography plane can be easily extracted.
The second embodiment adopts an electronic radial scan type ultrasonic endoscope. Alternatively, the second embodiment may adopt an electronic convex scan type ultrasonic endoscope, which includes an array of ultrasonic transducers and electrically switches transducers.
As shown in
As shown in
As shown in
The electronic convex scan type ultrasonic endoscope scans in the direction different from the scanning direction of the mechanical scan type ultrasonic endoscope and the electronic radial scan type ultrasonic endoscope. However, the electronic convex scan type ultrasonic endoscope may be also applied to the ultrasonic diagnosis apparatus so as to achieve easily-understandable diagnosis.
As shown in
A third embodiment is substantially the same as the first embodiment. Therefore, only differences will be described. The same reference numerals are given to the same components, and the description will be omitted here.
Since the ultrasonic diagnosis apparatus 2 according to the first and second embodiments has the construction shown in
The ultrasonic image creating unit 10 creates ultrasonic image data from ultrasonic signals obtained by transmitting and receiving ultrasonic wave within an object.
On the other hand, the schematic diagram area extracting unit 21 detects an area of the scanning position of the ultrasonic endoscope from reference schematic diagram data of the reference schematic diagram storing unit 22 based on the signals of the position and direction for detecting the position of the ultrasonic endoscope and the attitude of the object, which have been input to the name-of-part extracting unit 25. Then, the schematic diagram area extracting unit 21 outputs ultrasonic scan area data.
The name-of-part/area correspondence unit 24 reads from the name-of-part storing part 23 name-of-part data corresponding to the output ultrasonic scan area data. The name-of-part superposing part 20 displays on the screen of the display 3 the read name-of-part data over the ultrasonic image.
Furthermore, because of the construction of the name-of-part extracting unit 25 as shown in
According to the first variation example of the third embodiment, the ultrasonic image creating unit 10 creates ultrasonic image data from ultrasonic signals obtained by transmitting and receiving ultrasonic wave.
On the other hand, like the operation in
The part area reading unit 26 reads part area data to be colored in accordance with the ultrasonic scan area data from the part area storing unit 27 based on the ultrasonic scan area data output from the schematic diagram area extracting unit 21. The name-of-part superposing unit 20 superposes and displays the read part area colored data on the ultrasonic image.
By displaying a part name over the ultrasonic image and the schematic image together, more easily understandable diagnoses can be achived. An ultrasonic diagnosis apparatus implementing the construction will be described below.
According to the second variation example of the third embodiment, the ultrasonic image creating unit 10 creates ultrasonic image data from ultrasonic signals obtained by transmitting and receiving ultrasonic wave.
Signals of the position and direction for scanning ultrasonic wave of the ultrasonic endoscope are input to the name-of-part extracting unit 25, and the name of the part is therefore output. Then, the name-of-part superposing unit 20 superposes the name of the part on the ultrasonic image.
On the other hand, the schematic diagram data creating unit 11 reads schematic diagram data corresponding to the ultrasonic-wave scanning position from the schematic diagram data storing unit 13 based on the input signals of the position and direction for scanning ultrasonic wave of the ultrasonic endoscope. The image synthesizing unit 12 synthesizes the read schematic diagram data and the name-of-part superposed ultrasonic image output from the name-of-part superposing unit 20. Then, the display 3 displays the image on the same screen.
A fourth embodiment is substantially the same as the first embodiment. Therefore, only the differences will be described. Here, the same reference numerals are given to the same components, and the description will be omitted.
As shown in
Thus, an operator can read a desired schematic diagram for easily understandable diagnoses.
A fifth embodiment is substantially the same as the first embodiment. Therefore, only the differences will be described. The same reference numerals are given to the same components, and the description will be omitted here.
In order to provide a schematic diagram data storing unit, a large amount of capacity is required, which costs a lot. Therefore, as shown in
All of the above-described embodiments use a long and narrow, flexible ultrasonic endoscope but the invention may be applied to a case where an egg-shaped capsule type ultrasonic sonde containing a position detecting function as disclosed in Japanese Unexamined Patent Application Publication No. 2000-23980.
The capsule type ultrasonic sonde 33 transmits and receives ultrasonic wave by driving the array transducer from the sending/receiving circuit 35 by using energy of the battery 38, switches transducers for transmitting and receiving and scans the ultrasonic wave.
Thus, ultrasonic wave is received, is amplified in the sending/receiving circuit 35 and is sent from the send antenna 39 to an external ultrasonic synthesizing operation apparatus (not shown). Then, an ultrasonic image is created.
At the same time, by using the energy of the battery 38, a positional signal is sent from the transmitter 40 through the coil 41 and is received by the receive coil 7 as shown in
The subsequent steps for displaying the scanning position over a schematic diagram and for coloring and displaying the name of a part and the part area over an ultrasonic image are performed in accordance with the position of the capsule type ultrasonic sonde 33 like the constructions shown in
Apparently, according to the present invention, different embodiments can be variously constructed based on the present invention without departing from the spirit and scope of the present invention. The present invention is only limited by the appended claims and is not limited by the specific embodiments.
As described above, an ultrasonic diagnosis apparatus according to the present invention is effective for observing concerned parts within a body cavity through ultrasonic tomograms.
Number | Date | Country | Kind |
---|---|---|---|
2002-283803 | Sep 2002 | JP | national |
Number | Date | Country | |
---|---|---|---|
Parent | PCT/JP03/11694 | Sep 2003 | US |
Child | 11085343 | Mar 2005 | US |