JPH07303656A - Calculus crushing equipment - Google Patents

Abstract

PURPOSE:To provide a calculus crushing equipment, which can give quantitative data to serve as judging guidelines for a physician to make final decision on ultrasonic wave conditions to apply to a case. CONSTITUTION:The calculus crushing equipment has a calculus crushing equipment proper 9 that focuses ultrasonic wave to crush calculi in a patient's body, the picture constructing units 1, 2 that gather images of a calculus and its vicinity area, the first memory section 5 that memorizes shape patterns of calculi in various kinds, and a picture disposing equipment 3 that extracts a calculus image from the whole picture by a magnifying process (2 times or more in integral number). In addition, it has a judging unit 4 that selects one of the shape patterns memorized in the first memory unit 5 matching to a calculus image extracted by the picture disposing equipment 3, and an output monitor 7 that outputs the kind of calculus shape pattern selected by the judging unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calculus breaking device for crushing calculi by focusing ultrasonic waves.

[0002]

2. Description of the Related Art A calculus breaking device intermittently focuses ultrasonic pulses on a calculus and crushes the calculus by its impact force (sound pressure). One of the issues that has been taken up in the calculus crushing device since the beginning of its development was how to crush the calculi reliably and efficiently. That is,
This is to divide the stone into a size that can be discharged by the human body's discharging activity with the minimum irradiation frequency by the maximum irradiation intensity considering safety. A doctor empirically determines the number of irradiations while referring to images and the like. Therefore, the number of irradiations to be determined may vary even for stones of the same type and size, and there is a concern that the stones cannot be sufficiently crushed and the healthy part is damaged.

[0003]

In view of the above-mentioned circumstances, the present invention provides a calculus breaking device capable of providing a doctor who makes a final decision on ultrasonic irradiation conditions with a quantitative judgment material which serves as a criterion for the judgment. With the goal.

[0004]

According to a first aspect of the present invention, there is provided a calculus breaking device main body for focusing ultrasonic waves to form a focus for crushing calculi in a patient, and an image of a region including the calculus is collected. Image collection means, storage means for storing shape patterns of a plurality of types of stones, extraction means for extracting a stone image from the image by n-value processing (n is an integer of 2 or more), and the extraction means. Selection means for selecting one of the shape patterns stored in the storage means that matches the extracted stone image, and output means for outputting the type of stone of the shape pattern selected by the selection means It is equipped with.

According to a third aspect of the present invention, a calculus crushing device main body for focusing ultrasonic waves to form a focus for crushing calculi in a patient, and image collecting means for collecting an image of the region including the calculus, A storage unit that stores a pixel value change pattern of each of a plurality of types of stones, a measurement unit that measures a pixel value change on a profile axis that passes through a stone image of the image,
Selecting means for selecting one of the pixel value patterns stored in the storage means that matches the pixel value change measured by the measuring means; and a stone of the pixel value pattern selected by the selecting means. And output means for outputting the type.

[0006]

According to the invention of claim 1, it is possible to provide the doctor with the type of stone determined based on the shape pattern of the stone image. Therefore, the doctor does not need to determine the type of stones, and can set the irradiation condition according to the type of stones provided.

According to the third aspect of the invention, it is possible to provide the doctor with the type of stone determined based on the change in the pixel value of the stone. Therefore, the doctor does not need to determine the type of stones, and can set the irradiation condition according to the type of stones provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram of a calculus breaking device according to the first embodiment. The calculus breaking device body 9 includes a shock wave generation source and a drive circuit that drives the shock wave generation source. The shock wave generation source includes a large number of strong piezoelectric elements (piezo elements) arranged inside an umbrella-shaped frame. The drive circuit applies a pulse high voltage (for example, 1.5 V) to each piezoelectric element of the shock wave source.
KV) is applied all at once. The ultrasonic wave generated from each strong piezoelectric element of the shock wave generation source is focused at a position uniquely determined by the shape (curvature) of the frame to form a focus. At this focus, a sufficient impact force (sound pressure) is generated to crush stones as the body to be treated.

The shock wave source may have the following configuration. The shock wave source is composed of a large number of strong piezoelectric elements arranged on a flat frame. The drive circuit applies a pulsed high voltage to each strong piezoelectric element of the shock wave generation source at different timings. The ultrasonic waves are focused by so-called electronic delay control. In this case, on the same principle as the sector scanning, the drive circuit changes the application timing of the pulse high voltage to each strong piezoelectric element to move the focal point while the shock wave source is fixed relative to the patient. be able to. Further, the electronic delay control is
There is a possibility that an acoustic lens that acoustically refracts ultrasonic waves generated from each strong piezoelectric element of the shock wave generation source and focuses the ultrasonic waves on a focal point is substituted for the structure arranged in front of a large number of strong piezoelectric elements.

The tip of the ultrasonic probe 1 is equipped with an ultrasonic piezoelectric element array in which ultrasonic piezoelectric elements are one-dimensionally arranged. An ultrasonic diagnostic apparatus body 2 is connected to the ultrasonic probe 1. The ultrasonic diagnostic apparatus body 2 includes a transmission / reception circuit and a signal processing circuit. The transmission / reception circuit scans a cross section (scanning cross section) including the calculus of the patient with the ultrasonic beam via the ultrasonic probe 1. The output of the transceiver circuit is sent to the signal processing circuit. The signal processing circuit uses the output signal of the transmission / reception circuit to generate an ultrasonic image of the scanning section. This ultrasonic image is sent to the image processing device 3.

The image processing apparatus 3 cuts out a partial image including a stone image and an acoustic shadow portion at a predetermined ratio with respect to the frame size from the ultrasonic image for the later-described pattern matching. First, the image processing device 3 recognizes a calculus image from an ultrasonic image by threshold processing, measures the diameter of the calculus, and sets this as a reference length. Then, the image processing device 3
Is a width (horizontally long) of twice the reference length and a vertically long size of three times the reference length, and the acoustic shadow portion is the reference length from the tip of the stone image closest to the ultrasound probe 1. The partial image is cut out from the ultrasonic image so that the length becomes twice as long.

The image processing apparatus 3 classifies the partial image into a stone image, an acoustic shadow portion, and a background portion (tissue portion) by an n-value conversion process (n is an integer of 2 or more). Here, n in the n-value conversion process is set to 3, and accordingly, the image processing device 3
Has two types of threshold values. By this ternarization process,
The ultrasonic image is divided into a calculus portion, an acoustic shadow portion, and a background portion (tissue portion). The strength ranking of the received signal gradually decreases from the stone portion having the highest signal strength to the background portion and the acoustic shadow portion. One of the two types of threshold values is set to a value that can distinguish between the stone portion and the background portion,
The other of the two types of threshold values is set to a value that allows selection of the background portion and the acoustic shadow portion. It should be noted that the acoustic shadowed portion exists behind the calculus surface when viewed from the ultrasonic probe 1 on the ultrasonic image. Since calculi have a large difference in acoustic impedance with respect to the tissue, most of the ultrasonic waves are reflected by the calculus surface (which increases the received signal strength from the calculus surface), and ultrasonic waves are transmitted behind the calculus surface. It's hard to do. Therefore, a so-called blank area is formed behind the calculus surface on the ultrasonic image. This blank portion is defined as the acoustic shadow portion. The partial image (three-valued image) that has undergone the three-valued process is sent to the determination device 4 and used as a target pattern in the pattern matching process executed by the determination device 4.

Further, the image processing device 3 measures the major axis and minor axis of the calculus using the ternary image and supplies the major axis and minor axis to the judging device 4. A plurality of types of reference patterns having different types of stones used in the pattern matching process and attribute data corresponding to each reference pattern are stored in the first storage unit 5. The attribute data includes the stone type of the corresponding reference pattern and the mass per unit volume unique to the stone type. 2A to 2I show a plurality of types of reference patterns. 2A to 2I, a solid line portion corresponds to (a contour of a stone), a shaded portion corresponds to a background portion, and a blank portion corresponds to an acoustic shadow portion. The determination device 4 selects one reference pattern that is most similar to the target pattern from the plurality of types of reference patterns. Generally, the types of calculi are distinguished by the component ratio of cholesterol, bilirubin calcium and calcium phosphate and the difference in the calculus internal cross-sectional structure. For example, FIGS. 2A to 2D and 2I show a radial structure, FIG. 2E shows a uniform structure, and FIG.
(F) is a layered structure having a radial structure together and enclosing air bubbles, FIG. 2 (g) is a layered structure having a radial structure together and having a calcified periphery, and FIG. 2 (h) is a layered structure having a calcified periphery. is there. 2 (a) to 2 (c) have cholesterol and bilirubin calcium as main components, and the bilirubin calcium component ratio is high in the order of (a) to (c). It should be noted that the higher the calcium component ratio, the more difficult it is to generally crush. Figure 2
(E) and FIG. 2 (f) have the property of being most difficult to crush in this example with calcium as the main component. The reference patterns listed here are merely examples, and in reality, a large number of subdivided reference patterns are stored in the first storage unit 5 together with respective attribute data.

The determination device 4 selects one of the plurality of types of reference patterns in the first storage unit 5 that is the most similar to the target pattern.
One reference pattern is selected, and the type of stone is determined from the attribute data. Further, the determination device 4 is the image processing device 3
The volume of the calculus is obtained by elliptic approximation from the major axis and the minor axis of the calculus, and the mass of the calculus is estimated by multiplying this volume by the mass per unit volume of the attribute data of the selected reference pattern. The type and mass of these calculi are sent to the output monitor 7 and displayed to be provided (presented) to a doctor (operator). The second storage unit 6 is accessed using the stone type and the stone mass as search keys.

The second storage unit 6 stores a plurality of types of irradiation conditions corresponding to various combinations of stone types and stone masses. The stored contents of the second storage unit 6 are timely updated by an additional updating unit (not shown) every time a treatment for calculus crushing is performed.
It is preferable to add or update. The irradiation condition corresponding to the combination of the stone type and the stone mass sent from the determination device 4 is selectively returned to the determination device 4 from the second storage unit 6. The irradiation conditions here include shock wave intensity (sound pressure at the focus) and number of irradiations (number of ultrasonic pulse repetitions).
And the irradiation cycle (irradiation repetition time interval). This irradiation condition is sent to the output monitor 7 and displayed to be provided (presented) to the doctor (operator).

The irradiation conditions are sent from the judging device 4 to the irradiation condition setting device 8. The irradiation condition setting device 8 sets the drive voltage to be supplied to the strong piezoelectric element for realizing the shock wave intensity of this irradiation condition, and the data indicating this drive voltage is set together with the irradiation frequency and the irradiation cycle (each data). It is transmitted to the calculus breaking device main body 9.

Next, the operation of this embodiment constructed as described above will be explained. FIG. 3 is a flowchart showing this operation procedure. First, in step S1, an ultrasonic image (ultrasonic image) near a calculus is collected by the ultrasonic probe 1 and the ultrasonic diagnostic apparatus main body 2. That is, the drive signal is applied from the transmission / reception circuit to each piezoelectric element of the ultrasonic probe 1 with different delay times. As a result, the patient is irradiated with an ultrasonic beam having a certain transmission directivity. The reflected wave from the inside of the patient is received by each piezoelectric element of the ultrasonic probe 1 and converted into an electric signal (received signal). The reception signal is given a reception directivity by the transmission / reception circuit, and then the envelope is detected by the signal processing circuit. This operation is repeated with different transmission directivity and reception directivity, and finally an ultrasonic image is generated. At this time, the doctor preferably moves and rotates the ultrasonic probe 1 to move the scanning cross section so that a stone image with the maximum diameter can be obtained.

The ultrasonic image is transferred to the image processing device 3 (step S2). Therefore, first, a partial image (extracted image) of the region around the stone based on the size (diameter) of the stone is extracted from the ultrasonic image (step S3). In particular,
Calculating the stone image from the ultrasonic image by threshold processing,
The diameter of the stone is measured. With this diameter as the reference length,
Twice the reference length is the width (horizontally long) and three times the reference length is the vertically long size, and the acoustic shadow part is twice the reference length from the tip of the stone image closest to the ultrasonic probe 1. A partial image having a length of 4 is cut out from the ultrasonic image.

In step S4, the image processing device 3
The partial image is classified into a stone image, an acoustic shadow portion, and a background portion (tissue portion) by the n-value conversion process (here, 3). Partial image (three-valued image) after this three-valued processing
Is sent to the judgment device 4 as a target pattern in the pattern matching process executed by the judgment device 4. Also,
The image processing apparatus 3 measures the major axis and minor axis of the calculus using the ternary image and sends the calculus to the determination apparatus 4.

In step S5, the determination device 4 makes the first
From the plurality of types of reference patterns in the storage unit 5, one reference pattern that is most similar to the target pattern (ternary image) is selected. The type of stone is read from the attribute data of the selected reference pattern (step S6).
Further, the determining device 4 obtains the volume of the calculus by elliptic approximation from the major axis and the minor axis of the calculus from the image processing device 3. The mass of the calculus is estimated by multiplying this volume by the mass per unit volume read from the attribute data of the selected reference pattern (step S7). The output monitor 7 shows the type and mass of these stones, and the diameter and volume.
Sent to and displayed for presentation (presentation) to the doctor (operator).

The second storage unit 6 is accessed by using the stone type and the stone mass as search keys. The irradiation condition corresponding to the combination of the stone type and the stone mass sent from the determination device 4 is selectively returned to the determination device 4 from the second storage unit 6. Thereby, the irradiation condition is predicted (step S8). The irradiation conditions here include shock wave intensity (sound pressure at the focus) and number of irradiations (number of ultrasonic pulse repetitions).
And the irradiation cycle (irradiation repetition time interval). This irradiation condition is sent to the output monitor 7 and displayed to be provided (presented) to the doctor (operator). The doctor compares the displayed irradiation conditions with the unique information of the patient and finely corrects them as necessary through an input device such as a keyboard (not shown). Alternatively, the doctor may make an effective treatment plan in a short time based on the type and size of the provided stone, and directly set the irradiation condition via the input device.

The finally determined irradiation condition should be sent from the judgment device 4 to the irradiation condition setting device 8 and supplied to the strong piezoelectric element for realizing the shock wave intensity of the irradiation condition by the irradiation condition setting device 8. The drive voltage is set, and the data indicating the drive voltage is transmitted to the calculus breaking device main body 9 together with the irradiation number and the irradiation cycle (each data) (step S).
10) Then, according to this condition, the calculus crushing apparatus main body 9 starts the calculus crushing treatment (step S11).

As described above, according to this embodiment, it is possible to automatically determine the type of calculus based on the shape of the calculus image and the shape of the acoustic shadow and provide it to the doctor. Also, the size of the stone (diameter, volume, mass)
Can be measured and provided to the doctor. Doctors can quickly develop an effective treatment plan based on the type and size of stones provided. Furthermore, it is possible to automatically set the irradiation conditions according to the type and size of the obtained stone. (Second Embodiment) FIG. 4 is a block diagram of a calculus breaking device according to a second embodiment. Note that, in FIG. 4, the same parts as those in FIG.

As shown in FIG. 5A, the image processing apparatus 10 tracks the pixels on the profile axis passing through the stone image in the ultrasonic image from the ultrasonic diagnostic apparatus main body 2 and changes the pixel value thereof. (Profile; see FIG. 5B) is measured. The position of the profile axis is preferably set by the image processing device 10 as follows. The range resolution in the ultrasonic image is from the scanning direction (also called the azimuth direction),
The depth direction (ultrasonic wave propagation direction) is better in each step.
Therefore, the profile axis is set on a certain raster. Further, a raster in which the calculus portion has the maximum length (maximum diameter) is selected as a certain raster so that the pixel value change can be captured with high accuracy. Further, in order to suppress a pixel value error, it is conceivable that the profile axis has a certain width as indicated by the diagonal lines in FIG. 5A, and pixels of the same depth on adjacent raster lines are averaged.

Further, the image processing apparatus 10 measures the major axis and minor axis of the calculus, as in the first embodiment. A plurality of types of profile patterns (reference patterns) having different types of stones used in the pattern matching process and attribute data corresponding to each reference pattern are stored in the first storage unit 12. The attribute data includes the stone type of the corresponding reference pattern and the mass per unit volume unique to the stone type. FIG. 6A to FIG. 6E show a plurality of types of reference patterns.

The determination device 11 selects one reference pattern that is most similar to the measurement profile (target pattern) from the image processing device 10 from the plurality of types of reference patterns in the first storage unit 12, and the attribute data of the reference pattern is selected. Determine the type of stone from. In addition, the determination device 11 is the image processing device 10.
The volume of the calculus is obtained by elliptic approximation from the major axis and the minor axis of the calculus, and the mass of the calculus is estimated by multiplying this volume by the mass per unit volume of the attribute data of the selected reference pattern. The type and mass of these calculi are sent to the output monitor 7 and displayed to be provided (presented) to a doctor (operator). The second storage unit 13 is accessed using the stone type and the stone mass as search keys.

Next, the operation of this embodiment configured as described above will be described. FIG. 7 is a flowchart showing this operation procedure. First, in step S21, an ultrasonic image (ultrasonic image) near a calculus is collected by the ultrasonic probe 1 and the ultrasonic diagnostic apparatus main body 2. At this time, the doctor preferably moves and rotates the ultrasonic probe 1 to move the scanning section so that a calculus image having the maximum diameter can be obtained.

The ultrasonic image is transferred to the image processing device 3 (step S22). Therefore, first, the position of the profile axis is set by the image processing device 3 as described above (step S23). That is, ideally, the profile axis is set on a certain raster passing through the maximum diameter of the stone image. Pixels are tracked along this profile axis to measure changes in pixel values, which are supplied to the determination device 11 as profile data. Further, the image processing device 10 measures the major axis and the minor axis of the calculus image and sends the calculus image to the determination device 11.

In steps S25 and S26, one reference pattern that is most similar to the target pattern (profile data) is selected from the plurality of types of reference patterns in the first storage section 12 by the pattern matching process. Here, so-called feature amount pattern matching is adopted. In this method, the similarity determination is performed by comparing each of a plurality of types of feature amounts of the target pattern and the reference pattern. Here, as the feature quantity, the slope at the discrete points of the profile and 1 / max of the maximum amplitude as shown in FIG.
A half value width representing a distance exceeding a value of 2 (half value) is treated. These feature amounts are calculated by the determination unit 11. Of course, it is preferable that the feature amount of each reference pattern is calculated and stored in the first storage unit 12 in advance from the viewpoint of shortening the processing time.

When one reference pattern most similar to the target pattern is selected, the type of stone is read from the attribute data of the selected reference pattern in step S27. Further, the determination device 11 causes the image processing device 1 to
The volume of the calculus can be obtained by elliptic approximation from the major axis and the minor axis of the calculus starting from 0. The mass of the calculus is estimated by multiplying this volume by the mass per unit volume read from the attribute data of the selected reference pattern (step S28). The type and mass of these stones, their diameter and volume,
Is sent to the output monitor 7 and displayed for provision (presentation) to the doctor (operator).

The second storage unit 6 is accessed by using the stone type and the stone mass as search keys. The irradiation condition corresponding to the combination of the stone type and the stone mass sent from the determination device 11 is selectively returned to the determination device 11 from the second storage unit 6. Thereby, the irradiation condition is predicted (step S29). The irradiation conditions mentioned here include shock wave intensity (sound pressure at the focus), the number of times of irradiation (the number of repetitions of ultrasonic pulses), and the irradiation cycle (repetition time interval of irradiation). The irradiation conditions are sent to the output monitor 7 and displayed to be provided (presented) to the doctor (operator) (step S30). The doctor compares the displayed irradiation conditions with the unique information of the patient and finely corrects them as necessary through an input device such as a keyboard (not shown).
Alternatively, the doctor may make an effective treatment plan in a short time based on the type and size of the provided stone, and directly set the irradiation condition via the input device.

The finally determined irradiation condition should be sent from the judgment device 11 to the irradiation condition setting device 8 and supplied to the strong piezoelectric element for realizing the shock wave intensity of the irradiation condition by the irradiation condition setting device 8. The drive voltage is set, and the data indicating the drive voltage is transmitted to the calculus breaking device main body 9 together with the irradiation number and the irradiation cycle (each data) (step S).
31), according to this condition, the calculus crushing apparatus main body 9 starts calculus crushing treatment (step S32). As described above, according to this embodiment, the same effect as that of the first embodiment can be obtained.

The present invention is not limited to the above embodiments and can be modified in various ways. For example, in the above description, the images of the vicinity of the calculi are collected by ultrasonic waves, but the image acquisition device is not limited to the ultrasonic diagnostic device, and an X-ray computer tomography device, a magnetic resonance imaging device, an X-ray diagnostic device, etc. May be adopted. FIG. 8 shows a block diagram when an X-ray computer tomography apparatus is adopted in the apparatus of the first embodiment shown in FIG. 1, and FIG. 9 shows a procedure for setting irradiation conditions in this case. As shown in FIG. 8 and FIG. 9, even if the ultrasonic diagnostic apparatus is changed to another one as the image acquisition apparatus, only the type of image to be handled is different and other basic components and operation procedures are the same as those of the first embodiment. No change from the example,

[0034]

According to the first aspect of the present invention, a calculus crushing device main body for focusing ultrasonic waves to crush stones in a patient to form a focus, and an image collecting means for collecting an image of a region including the calculi. And storage means for storing the shape patterns of each of the plurality of types of stones, and n-value conversion processing (n is 2
Extracting means for extracting a stone image by the above integer), selecting means for selecting one of the shape patterns stored in the storage means that matches the stone image extracted by the extracting means, and A calculus breaking device capable of determining the type of calculus based on the shape pattern of the calculus image and providing the doctor with the output means for outputting the type of calculus of the shape pattern selected by the selecting means. Can be provided.

According to a third aspect of the present invention, a calculus breaking device main body for focusing ultrasonic waves to form a focus for crushing calculi in a patient, and image collecting means for collecting an image of the region including the calculi, A storage unit that stores a pixel value change pattern of each of a plurality of types of stones, a measurement unit that measures a pixel value change on a profile axis that passes through a stone image of the image,
Selecting means for selecting one of the pixel value patterns stored in the storage means that matches the pixel value change measured by the measuring means; and a stone of the pixel value pattern selected by the selecting means. By including the output means for outputting the type, it is possible to provide the calculus breaking device capable of determining the type of the calculus based on the change in the pixel value of the calculus and providing it to the doctor.

[Brief description of drawings]

FIG. 1 is a block diagram of a calculus breaking device according to a first embodiment.

FIG. 2 is a diagram showing an example of image patterns of various calculi stored in a first storage section of FIG.

FIG. 3 is a flowchart showing a processing procedure of the first embodiment.

FIG. 4 is a block diagram of a calculus breaking device according to a second embodiment.

5 is a diagram showing profile axes defined by the image processing apparatus of FIG. 4 and profile curves to be created.

6 is a diagram showing an example of pixel value change patterns of various calculi stored in the first storage unit of FIG. 4;

FIG. 7 is a flowchart showing the processing procedure of the second embodiment.

FIG. 8 is a block diagram of the calculus breaking device of FIG. 1 that employs X-ray CT as an image acquisition device.

9 is a flowchart showing a processing procedure by the apparatus of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ultrasonic probe, 2 ... Ultrasonic diagnostic apparatus main body, 3 ... Image processing apparatus, 4 ... Judgment apparatus, 5 ... 1st memory | storage part, 6 ... 2nd memory | storage part, 7 ... Output monitor, 8 ... Irradiation condition Setting device, 9 ... Stone crushing device body.

Claims (4)

[Claims] 1. A calculus breaking device main body for focusing ultrasonic waves to form a focal point for crushing calculi in a patient, an image collecting means for collecting an image of a region including the calculus, and a plurality of kinds of calculi, respectively. Storage means for storing the shape pattern of No. 1, extraction means for extracting a stone image from the image by n-value conversion processing (n is an integer of 2 or more), and storage means for matching the stone image extracted by the extracting means. A calculus breaking device comprising: a selection unit that selects one of the shape patterns stored in the table; and an output unit that outputs the type of calculus of the shape pattern selected by the selection unit. . 2. The calculus breaking device according to claim 1, further comprising means for measuring the diameter of the calculus image extracted by the extracting means and outputting the diameter via the output means. 3. A calculus breaking device main body for focusing ultrasonic waves to form a focal point for crushing a calculus in a patient, an image collecting means for collecting an image of a region including the calculus, and a plurality of kinds of calculi, respectively. Storage means for storing the pixel value change pattern of, the measuring means for measuring the pixel value change on the profile axis passing through the stone image of the image, and the storing means for matching the pixel value change measured by the measuring means A calculus, comprising: a selection unit that selects one of the pixel value patterns stored in the storage unit; and an output unit that outputs the type of calculus of the pixel value pattern selected by the selection unit. Crushing device. 4. The calculus breaking device according to claim 3, further comprising means for measuring a diameter of a calculus image of the image and outputting the diameter via the output means.