JP2000166954A - Ultrasonic treating instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of treatment without moving a patient from a bed by reciprocating the patient without changing his posture, converging and irradiating treating ultrasonic waves to a treating object position to form a three-dimensional picture and composing an image based on the position of recognizing coordinates. SOLUTION: A bed position control part 500 controls the bed on which the patient stays according to a previously inputted operation pattern without varying his posture. A focus energy generating part position control part 101 necessarily keeps the positional relation of a patient treating object position and an ultrasonic generating source. An irradiating condition setting part 102 and a focusing energy irradiation control part 103 controls the irradiation of treating ultrasonic waves. ACT gantry position control part 201 moves a CT gantry to an image pickup position. Based on a three-dimensional image detected by a CT three-dimensional image constituting part 202, image information is displayed on an image display part 204 through a marker display part 203. Thus treatment is efficiently executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic therapy apparatus which focuses and irradiates a therapeutic ultrasonic wave generated outside a patient's body to a treatment target site for treatment.

[0002]

2. Description of the Related Art In conventional ultrasonic treatment, a target portion to be treated is specified by an image diagnostic apparatus, and the position and shape from the body surface, the irradiation position and treatment angle of the treatment ultrasonic wave, and the shielding tissue in the ultrasonic wave propagation path. Is obtained as treatment information. Based on this information, a treatment plan for performing ultrasonic treatment is created.

[0003] In the flow of these conventional ultrasonic treatments,
Ultrasound imaging apparatuses, CT imaging apparatuses, X-ray imaging apparatuses, and the like are used as imaging apparatuses. Among these imaging means, a three-dimensional stereoscopic image obtained by a CT image diagnostic apparatus is one of effective means for confirming a positional relationship between a treatment target site in a patient and surrounding organs.

[0004] A treatment target site is specified based on a three-dimensional image obtained by the CT image diagnostic apparatus, and a treatment plan is created based on other information necessary for ultrasonic irradiation. Thereafter, the positioning of the ultrasonic irradiation in the actual ultrasonic treatment is performed based on a two-dimensional ultrasonic tomographic image obtained by an ultrasonic probe integrated with a therapeutic ultrasonic generation source.
On the two-dimensional ultrasonic tomographic image, a focus marker for irradiation position alignment, a marker indicating a propagation path of the therapeutic ultrasonic wave, and the like are displayed. The operator performs positioning while checking the relative positional relationship between the two in the head while comparing the marker with the conventional CT image.

[0005]

However, in these conventional methods, CT image diagnosis and treatment plan examination based on the CT image diagnosis, ultrasonic treatment using therapeutic ultrasonic waves, IV
R treatment and the like are performed in separate rooms. Therefore, it is necessary for the operator of the ultrasonic therapy apparatus to perform irradiation positioning while comparing the markers displayed on the apparatus with the CT image and grasping the relative positional relationship between the two in the head. Required skill depending on the

Further, since the range of the propagation path of the therapeutic ultrasonic wave in the patient is displayed on a two-dimensional screen, it has been difficult to sufficiently confirm the positional relationship between the part to be treated and the surrounding tissue.

[0007] Further, when the therapeutic ultrasonic waves are shielded by ribs or the like existing in the ultrasonic wave propagation path, it is difficult to grasp the degree of shielding, and skill is required to set the optimum ultrasonic intensity.

In addition, since the CT tomographic imaging and the ultrasound treatment are performed in separate rooms, it takes time for the operator to move between rooms and time for the patient to get on and off the bed.

In addition, in the treatment of liver cancer and the like, for example, the IVR treatment for embolization treatment or the like is performed in a separate place, so that it takes time to prepare and move, so that the burden on both the patient and the operator is large. And combination therapy with ultrasound are difficult.

[0010] The present invention provides an ultrasonic therapy apparatus capable of performing efficient image therapy and ultrasonic therapy without moving the patient from the bed and capable of performing efficient therapy. It is an object of the present invention to provide an ultrasonic therapy apparatus which can be easily grasped, can easily set an irradiation direction, can perform an IVR treatment and an ultrasonic treatment continuously or in parallel, and has a high treatment efficiency and less burden on a patient. Aim.

[0011]

SUMMARY OF THE INVENTION According to the present invention, there is provided a focused ultrasonic irradiation apparatus for converging and irradiating a therapeutic ultrasonic wave to a treatment target site and performing a heat treatment, and an image display means for displaying the treatment target site. An image diagnostic apparatus that captures and displays a three-dimensional image of a patient's body tissue including the patient, and a patient movement that can freely reciprocate between the focused ultrasound irradiation apparatus and the image diagnostic apparatus without changing the position of the patient And a coordinate position recognition device for recognizing the three-dimensionally displayed three-dimensionally displayed spatial position coordinates of the treatment target and the focal position coordinates of the focused ultrasonic irradiation device. And an image synthesizing means for superimposing and displaying a propagation path and a focal position of the therapeutic ultrasonic wave on the three-dimensional image based on a result recognized by the coordinate position recognizing means. Cure Apparatus with a the resolution means.

Also, a focused ultrasonic irradiation apparatus for focusing and irradiating a therapeutic ultrasonic wave to a treatment target site to perform a heating treatment, and a three-dimensional image of a patient's body tissue including the treatment target region having image display means Diagnostic imaging apparatus for capturing and displaying an image, an X-ray diagnostic imaging apparatus having image display means for capturing and displaying an X-ray fluoroscopic image of a body tissue of a patient including the treatment target site, and the focused ultrasonic irradiation A patient moving device capable of freely reciprocating without changing the body position of the patient between the device and the image diagnostic device and the X-ray image diagnostic device. An apparatus moving means for moving the irradiation apparatus, the image diagnostic apparatus, the X-ray image diagnostic apparatus, and the patient moving apparatus away from and approaching each other; the focused ultrasonic irradiation apparatus, the image diagnostic apparatus, and the X-ray image diagnostic apparatus And relative position control means for preliminary the patient mobile device prevent approaching below a predetermined relative distance,
An ultrasonic therapy apparatus characterized by comprising:

[0013] A focused ultrasonic irradiation apparatus for focusing and irradiating a therapeutic ultrasonic wave to a treatment target site to perform a heat treatment, and a three-dimensional image of a patient's body tissue including the treatment target region having image display means. Ultrasound therapy comprising: an image diagnostic apparatus that captures and displays an image, and an X-ray image diagnostic apparatus that has an image display unit and captures and displays an X-ray fluoroscopic image of a patient's body tissue including the treatment target site The solution is an ultrasonic therapy apparatus, which comprises a synchronizing means for synchronizing the injection of the drug into the patient's body tissue and the irradiation of the focused ultrasonic wave.

Further, a volume CT value calculating means for integrating a CT value indicated by the volume of the propagation path of the treatment ultrasonic wave, and a vertical plane CT value for integrating a CT value indicated by a plane perpendicular to the propagation path of the treatment ultrasonic wave An ultrasonic treatment apparatus according to claim 1, characterized by comprising: an operation means.

[0015] In the display of the three-dimensional image of the patient's body tissue including the propagation path of the therapeutic ultrasonic wave and the treatment target site, the display based on the sound field distribution of the therapeutic ultrasonic wave or the treatment target site may be performed. Display information selecting means capable of freely selecting any one of the displays based on the degenerated area of the image, and freely selecting one of color-coded or contour display in the display selected by the display information selecting means. And a possible information expression selecting means. The ultrasonic therapy apparatus according to claim 1 or 4 is a solution means.

When a plurality of target sites are present in the body tissue of the patient, the display of the three-dimensional image can be freely selected to simultaneously or sequentially display the plurality of target sites. The ultrasonic therapy apparatus according to any one of claims 1, 4 and 5, further comprising a plurality of possible display selection means.

[0017] With this configuration, since the image diagnosis and the ultrasonic treatment can be performed continuously without moving the patient from the bed,
Efficient treatment can be performed.

Further, the propagation path of the therapeutic ultrasonic wave can be easily grasped, and the irradiation direction can be easily set.

Further, it is possible to provide an ultrasonic therapy apparatus which can perform the IVR treatment and the ultrasonic therapy continuously or in parallel, and has a high treatment efficiency and less burden on the patient.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1A and 1B show an example of the configuration of an ultrasonic therapy apparatus according to an embodiment of the present invention, wherein FIG. 1A is an external view looking down from directly above, and FIG. Yes,
(C) is a schematic diagram showing the appearance from the front.

(A) shows a CT gantry 10 as an image diagnostic apparatus, an X-ray apparatus 20 for obtaining image information of a treatment target site, and irradiation of therapeutic ultrasonic waves to perform ultrasonic treatment. Ultrasonic irradiation device 3 as a focused ultrasonic device
0, a bed 4 which is a patient moving device capable of freely moving without changing the body position while the patient to be treated is laid down
0.

These devices are not installed in separate rooms, but are installed in one room at the same time. Further, the respective devices can be freely moved within a predetermined range according to an instruction of an operator, and are controlled by a relative position control means (not shown) in order to prevent mechanical interference with each other. The movement of each device is realized by device moving means (not shown), and the relative position control means prevents mechanical interference with each other.

The CT gantry 10 can move parallel to the center axis of the bed 40, that is, the center axis of the patient's body, as shown by a movement range 11 in the figure. Since the CT gantry 10 itself can move to the position of the treatment target site of the patient without moving the bed 40 of the patient, a three-dimensional CT tomographic image can be captured without changing the position of the patient.

The moving range 21 indicates the moving range of the X-ray apparatus 20. When performing X-ray imaging, the patient on the couch 40 does not need to be moved, but can be moved to the treatment target site to be imaged. The X-ray apparatus 20 itself moves up to that point. Meanwhile, sleeper 4
0 itself is in the moving range 21 as indicated by the moving range 41.
Can be moved at a right angle to. The movement range 21 indicates the entire movement of the X-ray apparatus 20, and in addition to this movement, the horizontal movement, the vertical movement, and the rotation movement of the X-ray apparatus 20 and the mutual operation of the bed 40 freely image a patient's arbitrary part. Is possible.

The moving range of the ultrasonic irradiation device 30 is indicated by a moving range 31. This movement is also made at right angles to the central axis of the patient's body. This moving range indicates the movement of the entire ultrasonic diagnostic apparatus, and the ultrasonic irradiation apparatus has a mechanism for moving the ultrasonic irradiation source horizontally, vertically, and inclinedly. Sleeper 40
Ultrasonic irradiation can be freely performed on an arbitrary treatment target site in combination with the moving range of the above.

(B) shows the arrangement of the devices according to the above (a) viewed from the side. A CT gantry 10, an X-ray device 20, and an ultrasonic irradiation device 30 are arranged at predetermined positions on the same floor, and a moving range 1
1, the CT gantry 10 moves.

FIG. 3C shows the arrangement of the ultrasonic therapy apparatus according to the present invention viewed from the center axis direction of the bed 40. When a patient (not shown) is laid on the bed 40, peripheral devices move without moving the patient.

In the above configuration, since the patient does not move, the spatial position coordinates of the three-dimensional tomographic image including the part to be treated imaged by the CT gantry 10 and the ultrasonic irradiation device are used. 30 focal position coordinates,
Processing for displaying an image can be easily performed. The coordinate matching and image display will be described later.

FIGS. 2A and 2B show an example of image display of the ultrasonic therapy apparatus according to the embodiment of the present invention, wherein FIG. 2A shows a cross section deviated from the center of ultrasonic irradiation, and FIG. It is the schematic for demonstrating the cross-section display at the center of ultrasonic irradiation.

FIG. 3A shows an example of an image display when a treatment target site of a patient is present in, for example, a liver. A patient CT image 4 is displayed, and the patient CT image is displayed.
The image 4 includes a torso CT image 5 and a liver CT image 6. In addition, an affected area display 7 indicating a propagation path by irradiation of the therapeutic ultrasonic wave and a focal area display 8 for focusing on the result of focusing of the therapeutic ultrasonic wave are displayed on the liver CT image 6 in a superimposed manner.

In this display, an influence area display 7 is shown.
Does not show a triangle because a cross section of a part slightly deviated from the central axis of the affected area having a triangular pyramid-shaped space in which the therapeutic ultrasonic waves are focused is displayed. Accordingly, the display area of the focal region display 8 is also displayed smaller than the maximum sectional area.

(B) shows a cross section of the center axis of the irradiation of the therapeutic ultrasonic wave. In this display, the shape of the affected area display 7 shows a triangle. The display area of the focal area display 8 also indicates the maximum sectional area.

FIG. 3 is a schematic diagram showing the overall configuration of the ultrasonic therapy apparatus according to the embodiment of the present invention.

In the configuration shown in this figure, the control flow relating to the entire apparatus movement is governed by a focused energy control section 100 which is a relative position control means. The bed position control unit 500, the medicine injector control unit 400, and the X-ray device control unit 300 are connected.

The operation of each of these control units will be described individually.
Operation control for moving in a state of being placed on 0 is performed according to a previously input operation pattern. A plurality of the operation patterns are prepared in accordance with the type of treatment or imaging for the patient and the policy of the treatment plan, and an arbitrary program is also possible.

Next, the drug injector control unit 400 controls the X-ray apparatus 20 or the ultrasonic irradiation apparatus 30 when, for example, performing an IVR treatment on a patient or performing drug injection when performing ultrasonic therapy. It is used when it is necessary to synchronize operations such as In the medicine injector control unit 400, an injection speed, an injection cycle pattern, and the like according to the kind of the medicine can be input.

Next, the X-ray apparatus control section 300 controls the operation of the X-ray apparatus 20 when imaging the patient on the couch 40, and detects the position information of the imaging part and the position of the X-ray apparatus. The operation of the unit 301 and the operation of the X-ray image forming unit 302 are controlled.

The focused energy generating unit position control unit 101 maintains the positional relationship between the treatment target site of the patient and the ultrasonic generating source of the ultrasonic irradiation device 30 at a predetermined position, and sets the irradiation condition setting unit 102
And the focused energy irradiation control unit 103 performs predetermined control to accurately irradiate the treatment target ultrasonic waves to be irradiated.

The CT device control section 200 performs comprehensive control of a CT image diagnostic device for forming a three-dimensional image including a part to be treated of a patient. Regarding this control, CT
The relative position between the CT gantry 10 and the treatment target site of the patient is grasped by the gantry position control unit 201, and the CT gantry 10 is moved to a predetermined imaging position.

The CT three-dimensional image constructing unit 202 constructs the three-dimensional image based on the detected CT value and the position information of the part to be treated of the patient. In this control unit, a control unit for an image display method such as a display information selection unit, an information expression selection unit, and a multiple display selection unit may be included at the same time.

The marker display unit 203 controls two components, an acquired image reference position detection unit 213 and a marker position operation unit 223.
The spatial position coordinates of the treatment target site in the two-dimensional image and the spatial position coordinates of the focal point formed by the focused ultrasonic wave by the ultrasonic treatment apparatus are matched as the same coordinates.

The marker position operation unit 223 performs coordinate conversion of the focal position display of the focused ultrasonic wave in accordance with the change of the actual focal position, and updates the display. A marker for position display is displayed at the cross-sectional position specified by.

The image information from the marker display unit 203 is displayed on the image display unit 204. This display is 3
Two-dimensional image display and cross-section display at an arbitrary position can be performed. In addition, the propagation path and the focal point of the therapeutic ultrasonic wave can be displayed as outlines, and the identification can be improved by color coding.

As an example of application to the ultrasonic treatment by the ultrasonic treatment apparatus according to the embodiment of the present invention described above, a case where a focused ultrasonic wave is irradiated as a treatment ultrasonic wave in the treatment of liver cancer will be described below. I do.

(1) Selection of treatment method A part to be subjected to embolization treatment and a part to be treated by focused ultrasound are determined in advance by various treatments according to a treatment plan. In addition, a part to be treated with focused ultrasound may be irradiated with ultrasound in a state where a blood vessel is blocked. The purpose of this is to suppress the metastasis by suppressing the cooling by the blood flow and the movement of the cancer cells by the blood flow during the denaturation, thereby ensuring the thermal denaturation and suppressing the metastasis. In addition, the therapeutic effect may be enhanced by irradiating ultrasonic waves after injecting the drug.

(2) Determination of Direction and Position of Ultrasound Irradiation The range of the part to be treated is captured as a three-dimensional image by the CT image diagnostic apparatus. The movement for CT imaging is performed by moving the CT gantry 10 with respect to the bed 40 or by moving the bed 40 with the CT.
Either of the movements with respect to the gantry 10. A thermally denatured area marker 8 and an affected area marker 7 unique to the ultrasonic irradiation device 30 are displayed on the image data.

It is also possible to display only the portions cut out in these areas. For example, when cut out at the affected area, it becomes a cone beam shape. The marker 8 is movable in the image according to the moving direction of the ultrasonic irradiation device 30 and the moving range. The marker 8 can display one or both of a region in the propagation path of the ultrasonic wave where the sound intensity is equal to or higher than a certain value and a region where thermal denaturation occurs under the specified irradiation condition. The marker 8 can be displayed either by displaying only the outline of the area or by displaying the area in different colors.

The approach direction and position of the ultrasonic irradiation device 30 with respect to the patient are determined by moving the marker 8 so that the surrounding organs do not overlap the heat-denatured region or the affected region in accordance with the heat-denatured region and the treatment target site. I do. In this state, it is confirmed that there is no mutual interference between the appearance of the patient and the relative position display of the appearance of the ultrasonic irradiation device 30. When it is necessary to correct the position of the patient using an auxiliary mat or the like, the display reflects the inclination.

Further, an ultrasonic probe (not shown) is provided inside the ultrasonic generating source, and a CT image of the same cross section as the tomographic plane by the probe is displayed, and a real-time ultrasonic tomographic image and a CT image are displayed together. Confirm the treatment position.

(3) Determining the Number of Irradiations and Direction of Plural Irradiation In the case where the degenerating area due to one irradiation is smaller than the treatment area and multiple irradiations are required at different positions, Display multiple affected areas simultaneously. in this case,
Instead of displaying them all at the same time, they can be displayed one by one in the order of irradiation, or they can be sequentially displayed cumulatively. Using this display, the irradiation direction and the number of irradiations (range) are determined.

(4) Determination of Irradiation Intensity The integral value of the volume CT value unique to the propagation path of the therapeutic ultrasonic wave is determined, and this is processed by a function set in advance to calculate the ultrasonic loss in the propagation path. The intensity of the ultrasonic wave irradiated by the ultrasonic irradiation device 30 is set so as to compensate for the loss. Also,
The CT value of the plane where the CT value per unit area of the plane perpendicular to the propagation path is the maximum value is processed by a function set in advance to calculate the degree of ultrasonic shielding in the propagation path to compensate for the loss due to shielding. In this way, the intensity of the ultrasonic wave to be irradiated is set. The calculation of the occlusion can also be performed by recognizing a region such as a rib. Further, these intensity setting values can be arbitrarily changed by the judgment of the operator.

(5) IVR Treatment The therapeutic ultrasonic source 30 is moved far away from the bed 40 and the X-ray C-arm 20 is moved closer to the bed 40. In this positional relationship, the IVR procedure is performed while alternately using X-ray contrast fluoroscopy and CT contrast radiography. In IVR treatment, embolization, drug injection, etc. are performed. Switching between X-ray and CT, bed 4
By the slide of 0 or the movement of the CT gantry 10,
Change the relative position with the patient.

(6) Irradiation of Ultrasonic Wave for Treatment The X-ray C-arm 20 is moved far away from the bed 40, and the focused ultrasonic irradiation device 30 is moved close to it. The focused ultrasonic irradiation device 30 is moved to the position specified in the treatment plan and irradiated with ultrasonic waves. In this case, the irradiation can be performed in synchronization with the injection of the medicine while the medicine injection tool is left. If the ultrasonic irradiation site has been plugged or the drug injector has been left, the embolus is released or the drug injector is removed again under X-ray radioscopy.

The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

For example, although the description has been given of the treatment by the focused ultrasonic wave, the treatment is similarly performed in the treatment apparatus using the electromagnetic wave. In addition, instead of a CT image, an affected region, a treatment region, and the like can be displayed by being superimposed on a three-dimensional ultrasonic image.

Further, even if the MRI image diagnostic apparatus is used in place of the CT image diagnostic apparatus, the effects specific to the present invention can be obtained, and the same applies to other three-dimensionally displayable image pickup apparatuses.

[0058]

According to the present invention, image diagnosis and ultrasonic treatment can be performed continuously without moving the patient from the bed.
Efficient treatment can be performed.

Further, the propagation path of the therapeutic ultrasonic wave can be easily grasped, and the irradiation direction can be easily set.

Further, an IVR treatment and an ultrasonic treatment can be performed continuously or in parallel, and an ultrasonic treatment apparatus with high treatment efficiency and less burden on a patient can be provided.

[Brief description of the drawings]

FIG. 1 is an example of an apparatus configuration of an ultrasonic therapy apparatus according to an embodiment of the present invention, in which (a) is an external view looking down from directly above, (b) is an external view from directly beside, (c) is a schematic view showing the appearance from the front.

2A and 2B are examples of image display of the ultrasonic therapy apparatus according to the embodiment of the present invention, wherein FIG. 2A is a display of a cross section deviated from the center of ultrasonic irradiation, and FIG. FIG. 5 is a schematic diagram for explaining a cross-sectional display at the center of FIG.

FIG. 3 is a schematic diagram showing an overall configuration of the ultrasonic therapy apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 4 ... patient CT image 5 ... torso CT image 6 ... liver CT image 7 ... display of affected area 8 ... focus area display 10 ... CT gantry 20 ... X-ray device (C-arm) 30 ... ultrasonic source 40 ... bed

Continued on front page F-term (reference) 4C093 AA07 AA22 CA15 CA18 CA33 EC16 EC21 EC28 EC41 EC57 ED07 FA11 FA36 FA43 FF16 FF37 FF42 FG01 FG13 4C099 AA01 CA11 EA20 GA30 JA13 PA10 4C301 EE13 EE19 FF21 KK23 KK23

Claims (6)

[Claims] 1. A focused ultrasound irradiator for focusing and irradiating therapeutic ultrasound on a treatment target site to perform heat treatment, and a three-dimensional image of a patient's in-vivo tissue including the treatment target site, the device including image display means. An image diagnostic apparatus that captures and displays an image, and a patient moving apparatus that can freely reciprocate between the focused ultrasonic irradiation apparatus and the image diagnostic apparatus without changing the position of the patient. A coordinate position recognizing means for recognizing and matching spatial position coordinates of the treatment target site displayed three-dimensionally by the image diagnostic apparatus and focal position coordinates of the focused ultrasonic irradiation device; and the coordinate position recognizing means. 3 based on the result recognized by
An ultrasonic synthesizing device, comprising: an image synthesizing unit configured to display a propagation path and a focal position of the therapeutic ultrasonic wave on a two-dimensional image in a superimposed manner. 2. A focused ultrasound irradiator for focusing and irradiating therapeutic ultrasound on a treatment target site to perform heat treatment, and a three-dimensional image of a patient's in-vivo tissue including the treatment target site having image display means. An X-ray diagnostic imaging apparatus having an image display means for imaging and displaying an X-ray fluoroscopic image of a body tissue of a patient including the treatment target site; and the focused ultrasound irradiation A patient moving device capable of freely reciprocating without changing the position of the patient between the device and the image diagnostic device and the X-ray image diagnostic device. An apparatus moving means for moving the irradiation apparatus, the image diagnosis apparatus, the X-ray image diagnosis apparatus, and the patient moving apparatus away from and approaching each other; the focused ultrasonic irradiation apparatus, the image diagnosis apparatus, and the X-ray image diagnosis apparatus You And a relative position control means for preventing the patient moving device from approaching a predetermined relative distance or less. 3. A focused ultrasound irradiation apparatus for focusing and irradiating therapeutic ultrasound on a treatment target site to perform heat treatment, and a three-dimensional image of a patient's in-vivo tissue including the treatment target site having image display means. An ultrasonic diagnostic apparatus comprising: an image diagnostic apparatus that captures and displays an image; and an X-ray image diagnostic apparatus that includes image display means and captures and displays an X-ray fluoroscopic image of a patient's body tissue including the treatment target site. An ultrasonic treatment apparatus, comprising: a synchronization unit that synchronizes injection of a drug into a patient's body tissue and irradiation of the focused ultrasonic wave. 4. A volume CT value calculating means for integrating a CT value indicated by a volume of the therapeutic ultrasonic wave propagation path, and a vertical plane CT value for integrating a CT value indicated by a plane perpendicular to the therapeutic ultrasonic wave propagation path. 2. The ultrasonic therapy apparatus according to claim 1, comprising: an arithmetic unit. 5. A display based on a sound field distribution of the therapeutic ultrasonic wave or the therapeutic target part in displaying the propagation path of the therapeutic ultrasonic wave and the three-dimensional image of the body tissue of the patient including the therapeutic target part. Display information selecting means that can freely select any one of the displays based on the degenerated area of the image, and the expression by the display selected by the display information selecting means can freely select any one of color classification and contour line display. The ultrasonic therapy apparatus according to claim 1, further comprising: a possible information expression selecting unit. 6. When a plurality of target sites are present in a patient's body tissue, the display of the three-dimensional image can be freely selected to simultaneously or sequentially display the plurality of target sites. The ultrasonic therapy apparatus according to claim 1, further comprising a plurality of display selecting means.