JP4574872B2 - 3D image display system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional image display system.
[0002]
[Prior art]
Conventionally, in medical practice such as diagnosis and treatment, an image created by a medical image diagnostic apparatus such as an X-ray diagnostic apparatus, an X-ray CT apparatus, or a nuclear magnetic resonance imaging apparatus (MRI apparatus) is used for diagnosis or treatment. Although three-dimensional observation is performed as an object, there are cases where the image display or observation is accompanied with urgency depending on the case. For example, this is the case for IVR (Interventional Radiology).
[0003]
IVR is a technique for medically treating cases such as stenosis of blood vessels and aneurysms using catheters, and is extremely less invasive and less damaging to the subject than surgical operations. Attention has been paid. Specifically, for example, when treating stenosis, the treatment is performed by inserting a catheter into the stenotic site and inflating a balloon attached to the distal end of the catheter. In the case of treating an aneurysm, the coil is fed out from the tip of the catheter and inserted into the aneurysm, thereby inhibiting blood flow from entering the aneurysm.
[0004]
By the way, it is generally considered that such IVR is preferably completed in as short a time as possible. This is because a foreign substance called a catheter is put into the body of the subject, and the possibility of an unexpected situation (for example, a crack flowing out by the catheter blocking an important blood vessel downstream) is completely denied. It is not possible. In particular, the treatment of the head and the like is said to require the utmost care.
[0005]
Then, in order to perform IVR in a short time, based on three-dimensional information (3D images) collected by a medical image diagnostic apparatus such as an X-ray diagnostic apparatus, an X-ray CT apparatus, or an MRI apparatus, It is becoming important to grasp the structure in detail, and it is becoming very important to be able to observe the 3D image in a short time after data collection by the medical image diagnostic apparatus (image display or Urgency of observation).
[0006]
[Problems to be solved by the invention]
By the way, in order to observe a 3D image after collecting data, operations such as selection of object data, selection of image data, etc. are performed, and after loading 3D image, 3D image processing, etc., it is displayed as an observation image for the first time. It becomes possible. During this time, although there is a difference depending on the calculation speed of the CPU, etc., at present, it takes about 30 seconds even if it is fast (thus, at present, 3D images are observed instantaneously after data collection processing) That is difficult.)
[0007]
However, during urgent procedures such as IVR, doctors concentrate on the procedure, and engineers and nurses who support it are also focused on controlling the X-ray diagnostic device and preparing for examinations. ing. In such a case, operations such as selection of subject data and selection of image data should not be performed as much as possible, and from the viewpoint of completion of surgery in a short time, the subsequent 3D Consumption of waiting time required for image loading, 3D image processing time, and the like should be avoided as much as possible.
[0008]
Therefore, as a method for solving such a problem, it is conceivable to automatically display an image for which the processing is completed without any operation after completion of reconstruction of a 3D image or the like. However, if such automatic display is simply performed, for example, even if a doctor performing an IVR operation is observing an image created before that, a 3D image of processing completion is forcibly displayed. , The doctor's observation is disturbed. In order to avoid this, a configuration that requires some (simple) operation (for example, a dialog asking whether or not to display an image) is displayed to display the 3D image after completion of the reconstruction. If the operator responds to this, etc., in difficult scenes such as IVR, there are often cases where there is no one in front of the display device. It will not be displayed.
[0009]
The present invention has been made in view of the above circumstances, and its purpose is to respond to a demand for quick and hassle-free image display, and by suddenly switching the image during image observation, etc. An object of the present invention is to provide a three-dimensional image display system in which observation is not disturbed.
[0010]
[Means for Solving the Problems]
The present invention takes the following means in order to solve the above problems.
That is, the three-dimensional image display system according to claim 1 is a three-dimensional image display system capable of displaying a 3D image based on data acquired by one or more medical image diagnostic apparatuses. After completion of the above, a switching means for determining a mode for determining whether or not to automatically display the 3D image is provided.
[0011]
Further, in the three-dimensional image display system according to claim 2 or 3, in the system according to claim 1, when the mode is determined to perform automatic display, there is some operation of the apparatus user. In this case, the mode is automatically shifted to not performing automatic display (Claim 2), and when the mode is determined not to perform automatic display for a certain period of time. If no processing is performed, the mode is automatically shifted to automatic display (claim 3). The three-dimensional image display system according to claim 4 is characterized in that the length of the predetermined period can be set.
[0012]
Furthermore, the three-dimensional image display system according to claim 5 is the system according to claim 1, wherein when the mode is determined not to perform automatic display, after the reconstruction of the 3D image is completed, The three-dimensional image display system according to claim 6, further comprising means for notifying information indicating that the display of the 3D image is possible, wherein the information indicating that the display is possible includes the 3D image display system. It is one or a plurality of thumbnail images of the image, subject name, subject information, examination date / time, examination name, and reconstruction conditions. The three-dimensional image display system according to claim 7, wherein the thumbnail image is one of a surface rendering image, a volume rendering image, a MIP image, a MinIP image, and an X-ray projection image subjected to 3D image processing. Features.
[0013]
In addition, the three-dimensional image display system according to claim 8 is the system according to claim 1, wherein the 3D image is reconstructed for the purpose of synthesis when the mode is determined to be automatically displayed. The three-dimensional image display system according to claim 9, wherein the 3D image and the currently displayed image are automatically combined, and the combined image is automatically displayed. 2. The system according to claim 1, wherein, when the mode is determined to be automatically displayed, if the 3D image is an image reconstructed for the purpose of synthesis, the 3D image and the 3D image are displayed. And an image corresponding to the above are automatically synthesized, and the synthesized image is automatically displayed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the overall configuration of the three-dimensional image display system according to the present embodiment. In the present embodiment, a system for displaying a three-dimensional image provided with the X-ray diagnostic apparatus 1 as a medical image diagnostic apparatus will be particularly described.
[0015]
1, a three-dimensional image display system includes an X-ray diagnostic apparatus 1, an A / D conversion unit 6, a digital image processing unit 7 that performs image processing and image storage, a reconstruction processing unit 8 that performs 3D reconstruction, and a reconstruction. 3D image display unit 9 for displaying the captured image, storage device 10 for storing data, LUT (Look Up Table) 11 for gradation conversion, filtering unit 12 for filtering such as edge enhancement, and the X-ray diagnostic apparatus 1 is composed of a monitor 13 that displays various images acquired by 1.
[0016]
As shown in FIG. 1, the X-ray diagnostic apparatus 1 includes an X-ray tube 2 having a radiation source (not shown) therein and, for example, an image intensifier (image intensifier, so-called “I.I.”). The constructed X-ray detector 3 is roughly constituted by a C arm 4 provided at both ends, a bed 5 on which a subject P is placed, and the like. Among them, the C-arm 4 is such that the X-ray tube 2 protrudes from the lower part of the bed 5 to the upper left part of the figure in FIG. 1 or the X-ray detector 3 covers the subject P in FIG. In addition to being able to perform a sliding operation (see arrows A and B in the figure), it is also possible to perform a rotating operation as indicated by an arrow C in the figure around the rotation shaft 4a.
[0017]
Such an X-ray diagnostic apparatus 1 is different from an X-ray CT apparatus that covers the entire circumference around the subject P, as can be seen from the outer shape of the C-arm 4 (FIG. 1). Using the C-arm opening end 4b, a doctor or the like can directly touch the subject P. Therefore, the apparatus is most suitable for performing IVR including complicated catheter operations. It can be said that there is.
[0018]
Now, according to the X-ray diagnostic apparatus 1 and the A / D conversion unit 6 through the monitor 13 as described above, the X-ray detector 3 detects X-rays emitted from the X-ray tube 2 and transmitted through the subject P. Then, by appropriately processing the detected result in various units at the subsequent stage, various images can be generated / displayed / observed.
[0019]
For example, if a low-dose X-ray is continuously emitted from the X-ray tube 2 and continuously detected by the X-ray detector 3, a so-called fluoroscopic image regarding the subject P can be generated ( The generated image is displayed, for example, on the fluoroscopic image monitor 13a). Further, by rotating the C arm 4 around the subject P and acquiring projection data from a plurality of directions, a so-called tomographic image relating to the subject P can be generated (reconstructed). The image is displayed, for example, on the captured image monitor 13b).
[0020]
Furthermore, in the above configuration example of the present embodiment, a so-called 3D image relating to the subject P can be generated (reconstructed). Hereinafter, the generation of the 3D image will be described in detail.
[0021]
First, the X-ray diagnostic apparatus 1 collects data while rotating the C arm 4 around the subject P at high speed. Specifically, while rotating the C-arm 4 in any direction indicated by an arrow C in the drawing (= changing the projection angle), for example, imaging is repeated at intervals of 1 degree, and the obtained rotation angle, for example, An X-ray intensity distribution for 200 degrees (that is, an X-ray intensity distribution of 200 patterns) is collected. The projected 200 patterns are converted into digital signals by the A / D conversion unit 6.
[0022]
Such projection data is collected twice before and after the injection of the contrast agent and is recorded in the storage device 10. When the data is accumulated, the digital image processing unit 7 takes a difference between an image (mask image) taken before contrast agent injection and an image (contrast image) taken after injection, that is, subtraction (DSA; Digital Subtraction Anigiology) processing is performed, and the processed data is sent to the reconstruction processing unit 8.
[0023]
The reconstruction processing unit 8 reconstructs the discretized reconstruction area. As an example of the reconstruction method, here, the filtered back projection method proposed by Feldkamp et al. Is applied. For example, an appropriate convolution filter such as Shepp & Logan or Ramachandran is applied to a 200-frame DSA image. Next, reconstructed image data, that is, a 3D image is obtained by performing a back projection operation. The 3D image reconstructed in this way is recorded in the storage device 10 and the reconstruction process is completed.
[0024]
In the above, the reconstruction region is defined as a cylinder inscribed in the X-ray bundle in all directions of the X-ray tube 2. For example, the inside of the cylinder is discretized three-dimensionally with the length at the center of the reconstruction area projected onto the width of one detection element of the X-ray detector 3 to obtain a reconstructed image of discrete point data. There is. However, the discrete interval is not limited to the example described here, and may be basically any type. Specifically, it may differ depending on the device configuration or the like. In this case, a discrete interval defined by the device configuration may be used.
[0025]
When the reconstruction of the 3D image is completed as described above, a signal indicating that the 3D image can be displayed is sent to the 3D display unit 9, and the 3D display unit 9 that has received this signal receives the 3D image. An image is displayed on, for example, the 3D image monitor 13c by various 3D image display methods. Here, various 3D image display methods refer to various other image display methods such as volume rendering method, surface rendering method, MIP method, MinIP method, and X-ray projection method. In this 3D image display, the optical parameter conversion function (threshold in the case of the surface rendering method), the color, the position of the light source, the intensity, and the like can be changed and displayed. For these parameters such as the 3D image display method and the optical parameter conversion function, default conditions may be determined in advance, and thereafter, a configuration that can be arbitrarily changed by an operator's operation is preferable.
[0026]
Note that the LUT 11 and the filtering unit 12 shown in FIG. 1 can be used according to circumstances when image processing is performed on the 3D image or the original DSA image so as to contribute to better diagnosis and observation. That's fine. Further, as shown in FIG. 1, the 3D display unit 9 is provided with a 3D image display switch ("switching means" in the present invention) 9a. This is because the switch 9a is ON or OFF. A mode for determining whether or not to automatically display a 3D image is determined depending on which one is present. The significance or action and effect will be described shortly.
[0027]
Below, the effect of the three-dimensional display system used as the said structural example is demonstrated. In addition, since this embodiment has the characteristic about the aspect which displays the 3D image reconfigure | reconstructed based on the data collection by the X-ray diagnostic apparatus 1, it demonstrates below centering on this point.
[0028]
First, as shown in step S1 of FIG. 2, in the configuration of the X-ray diagnostic apparatus 1, the reconstruction processing unit 8, and the like, a 3D image is reconstructed through the above-described procedure or action. When this reconstruction is completed, as described above, the 3D display unit 9 receives a signal indicating that a 3D image can be displayed.
[0029]
Next, in step S2 of FIG. 2, the state of the 3D image display switch 9a described immediately above is confirmed. Here, if the switch 9a is ON (automatic display mode), the 3D display unit 9 automatically reads the reconstructed 3D image, and sets the default conditions (3D image display method, optical parameter). 3D image display based on the conversion function (or threshold), color, light source position, intensity, etc.) is performed (step S31 in FIG. 2).
[0030]
On the other hand, if the 3D image display switch is OFF (non-automatic display mode), the automatic display as described above is not performed (step S32 in FIG. 2). That is, for example, if any image is displayed on the monitor 13 (particularly the 3D image monitor 13c) before the reconstruction process of the 3D image is completed, the state in which the image is displayed as it is is retained. Even when the image is not displayed, the state is maintained (preservation of the previous state).
[0031]
In the above description, when the 3D image display switch 9a is OFF, a reconstructed 3D image exists and some means for notifying the apparatus user of information that it can be displayed is provided. It is good to leave.
[0032]
For example, when the 3D image display switch 9a is configured to be able to switch the ON / OFF state by touching the monitor 13 with a finger or the like as shown in FIG. If the switch 9a is OFF and there is a 3D image reconstructed as described above, a process such as blinking the switch 9a is performed. A configuration in which the apparatus user is informed that 3D image display is possible can be adopted.
[0033]
Further, when the device user presses the blinking 3D image display switch 9a with a finger or the like, the OFF state is changed to the ON state, whereby the 3D display unit 9 reads the reconstructed 3D image. It may be configured such that a 3D image is displayed under default conditions. In FIG. 3, reference numeral 131 denotes an image display area for displaying a 3D image.
[0034]
Incidentally, in the present invention, the specific mode of the 3D image display switch 9a may be any. For example, in the above description, a so-called touch panel type switch is used. However, the switch may be turned on and off by a pointer that moves on the screen and an appropriate input unit such as a mouse. Further, it may be a fixed button type switch or a so-called toggle switch.
[0035]
Further, as a specific form of the 3D image display switch 9a, for example, as shown in FIG. 4, when the monitor 13 has a switching function of several pages, windows, screens, etc., the switching of the screen is as follows. It may be configured to determine ON / OFF of automatic display of 3D images.
[0036]
More specifically, for example, on the four pages shown in FIG. 4 (subject selection page 132 (also referred to as a so-called “Study page”), 3D image display page 133, 2D image display page 134, and VE display page 135). In the case where a page other than the subject selection page 132 is selected, it is assumed that some kind of image observation can be performed. Here, the subject selection page 132 is a screen on which a plurality of pieces of information such as the subject name are displayed in order to call an image related to a specific subject from a plurality of image data stored in advance. The user of the apparatus can observe a desired image by selecting a desired subject name from among these.
[0037]
Therefore, when such a subject selection page 132 is selected, even if automatic display of a 3D image is performed in the middle, there is no obstacle to image observation (because the image is not displayed in the first place). I'm not observing.) Eventually, when this subject selection page 132 is displayed on the monitor 13, it is assumed that the 3D image display switch is in the ON state, and the reconstructed 3D image is automatically displayed. When 135 is displayed, the switch can be regarded as being in an OFF state (see FIG. 4). As described above, even if the “3D image display switch” itself is not provided, it is included in the concept of “switching means” in the present invention.
[0038]
As described above, in the present embodiment, since the 3D image display switch is present, whether or not to automatically display the 3D image can be set as desired. First, when the switch 9a is turned on (automatic display mode), the 3D image is automatically displayed immediately after the reconstruction is completed. The 3D image can be observed without requiring any operation. As a result, a quick diagnosis and a quick operation can be performed even during an IVR operation or the like that requires concentration. For this reason, it is considered more convenient for the 3D image display switch to be in the ON state (default value) immediately after the system is started up. When the 3D image display switch is turned off (non-automatic display mode), the image being observed is not suddenly switched by automatic display, and the observation is not disturbed. In the present embodiment, it can be noted that it is possible to have both of these advantages (ON or OFF).
[0039]
In the above embodiment, the three-dimensional display system shown in FIG. 1 has been described as having an “integral” configuration, but the present invention is limited to such a form. is not. For example, the reconstruction processing unit 8 or the 3D image display unit 9 may be a single device, and may be connected to the X-ray diagnostic apparatus 1 via some network (for example, Ethernet). Of course, various other configurations are possible.
[0040]
Moreover, although the said embodiment demonstrated the form provided with the X-ray diagnostic apparatus 1 as a medical image diagnostic apparatus, as what comprises the three-dimensional image display system in this invention, an X-ray CT apparatus, SPECT ( Other various medical images such as a single photon emission CT (CT) device, an MRI device or a 3D ultrasonic diagnostic device, or a device having both the X-ray diagnostic device 1 and the X-ray CT device (so-called “IVR-CT device”). It may be provided with a diagnostic device.
[0041]
Further, in the above description, whether or not the 3D image display switch 9a is turned ON or OFF in advance has been determined whether or not the 3D image is automatically displayed. However, the present invention is limited to such a form. Is not to be done. For example, when data collection in the X-ray diagnostic apparatus 1 is completed and transmitted to a subsequent unit or the like, the doctor or the like sets as one of the reconstruction conditions on the X-ray diagnostic apparatus 1 side. As described above, the above-described ON (automatic display mode) or OFF (non-automatic display mode) may be set. In this case, the ON / OFF setting by the doctor or the like can be given priority regardless of the state of the 3D image display switch 9a, and the 3D image can be configured. A configuration in which the display switch 9a itself is not provided is also possible. In any case, it goes without saying that the ON or OFF setting in these cases is also included in the concept of the “switching means” in the present invention.
[0042]
Below, the modification based on the said embodiment is demonstrated.
[0043]
(Modification 1)
First, in the above-described embodiment, the 3D image display switch 9a is turned off (determined to the non-automatic display mode) when the device user touches the switch 9a with a finger, clicks, or presses the switch. Although described only in the case of a direct operation on the switch 9a, in the present invention, the process of shifting the switch 9a to OFF can be configured as follows.
[0044]
That is, as shown in the flowchart of FIG. 5, when the current state is the switch ON state, the 3D image display switch 9a is automatically turned OFF when the apparatus user performs some operation relating to the 3D display unit 9. It is possible to have various configurations or actions.
[0045]
Thereby, the following effects can be produced. First, a unit that performs 3D image processing such as the 3D display unit 9 shown in FIG. 1 is usually expensive, and is therefore connected to and sent from an X-ray CT apparatus, MRI apparatus, or the like existing in the hospital. In many cases, 3D image processing is also performed at the same time. That is, even during the IVR operation, there is a case where another apparatus user (applicable to an apparatus user other than the X-ray diagnostic apparatus 1 in the above embodiment) interrupts and uses the apparatus. Therefore, when these persons are performing any operation related to the 3D display unit 9, it is highly possible that the other apparatus user is observing the 3D image. It is preferable not to have any. In this regard, in the first modification, since the 3D image display switch 9a is automatically turned off as described above, there is no need to force the observation to be interrupted as described above.
[0046]
In the situation described above, it has been described that the 3D image display switch 9a is turned off only when the above-mentioned “another apparatus user” performs any operation. However, in the present invention, the operation is performed. It is not necessary for the person to be the “other apparatus user” mentioned above. That is, for example, when a doctor performing an IVR operation on the X-ray diagnostic apparatus 1 performs an operation related to the 3D display unit 9 while confirming a 3D image before treatment, the 3D image display switch 9a is ON. In such a case, it is naturally possible to adopt a form that automatically shifts to OFF.
[0047]
(Modification 2)
In the second modification, contrary to the first modification, when the 3D image display switch 9a is OFF, it relates to a process of automatically switching it to ON. That is, as shown in the flowchart of FIG. 6, when the current state is the switch OFF state, when that state is maintained for a certain period, the 3D image display switch 9a is automatically turned on after the certain period has elapsed. It is possible to have a configuration or action as follows.
[0048]
Thereby, the following effects can be produced. That is, as described in the above embodiment, it is preferable to turn on the 3D image display switch 9a as a default value. As a general rule, it is preferable that the 3D image display switch 9a is turned on (one in which automatic display is performed). It is done. On the other hand, if the operation related to the 3D display unit 9 has not been performed for a long time, the state of the 3D image switch 9a is forgotten, and if the state is OFF, It will take extra time to use. Therefore, if no operation is performed on the 3D display unit 9 for a certain period, the 3D image display switch 9a can be automatically turned on to avoid the above-described problems. it can.
[0049]
Note that the length of the fixed period may be set in advance so that an appropriate time can be set according to the preference of the user of the apparatus.
[0050]
(Modification 3)
The third modification relates to a case where reconstruction of a plurality of 3D images is completed while the 3D image display switch 9 is OFF. In such a case, as described above, the device user is informed that there is a displayable 3D image that has been reconstructed by blinking the switch 9a or the like. If there are a plurality of sheets, it may be difficult for the user to determine which one should be displayed. Therefore, in order to solve this problem, the following configuration is preferable.
[0051]
That is, as shown in FIG. 7, when the 3D image display switch 9a is OFF and there is a 3D image that has been reconstructed, the thumbnail image 136 for the 3D image, the name 137 of the subject, In addition, at least one or a combination of information such as the shooting time 138 may be displayed together with (or without blinking) the 3D image display switch 9a (display is possible). In addition to this, the subject ID (subject information), the examination date and time, the examination name, the reconstruction condition of the 3D image, and the like can be considered. Here, the thumbnail image 136 is a small-sized image that can roughly grasp what the 3D image is. This may be one of the above-described 3D image display methods, that is, a surface rendering image, a volume rendering image, a MIP image, a MinIP image, an X-ray projection image, and the like.
[0052]
In this way, the apparatus user does not have to worry about which one to display even when waiting for display of a plurality of 3D images. In addition, even if there is only one waiting 3D image, if the above information is displayed, it is convenient for the user of the apparatus.
[0053]
(Modification 4)
The fourth modification relates to an application of the above embodiment to so-called image fusion. Here, as image synthesis, generally, image synthesis of CT images (tissue images such as internal organs) and MR images (metabolism and other functional images) relating to the same tomographic plane of the same subject is widely known. According to this, the organization and the function can be confirmed on the same screen. As for the above-described embodiment, a 3D blood vessel image based on a DSA image and a 3D image of a coil inserted in a stent or aneurysm site inserted in a stenosis site are synthesized (by the way). A stent is a cylindrical object composed of side surfaces knitted in a mesh, and has a balloon inside thereof, which is placed at a vascular stenosis site through a catheter to inflate the balloon. (Then, only the balloon is pulled out and only the stent is left.) The coil is a wire that is spirally introduced into the aneurysm. This serves to prevent blood from entering the aneurysm).
[0054]
Of these, in the case of synthesis of a 3D blood vessel image and a 3D stent image or a 3D coil image (hereinafter referred to as “3D stent image”), it is meaningless to see only the latter 3D stent image or the like. Only when an image or the like and a 3D blood vessel image are superimposed and the positional relationship is grasped is meaningful (that is, there is no meaning unless the images are combined). In addition, when performing such image composition, it is necessary to separately perform data collection (data collection with rotation of the C arm 4) for reconstructing a 3D blood vessel image, a 3D stent image, and the like. There is no (one data acquisition is sufficient), but the reconstruction process itself is completely different between blood vessels and stents (usually composed of metal, etc.), so it is necessary to perform them separately. There is.
[0055]
When the above embodiment is applied, the above-described image composition can be performed as described below. First, as in step R1 in FIG. 8, there is no difference from the above embodiment until the 3D image is reconstructed. However, in the case of FIG. 8, it is assumed that the 3D blood vessel image has already been reconstructed and the 3D blood vessel image is displayed on the 3D image monitor 13c. That is, the reconstruction in step R1 in FIG. 8 means a reconstruction process for a 3D stent image or the like. Note that such reconstruction processing of a 3D stent image or the like is achieved by using only a mask image.
[0056]
When the reconstruction of the 3D stent image or the like is completed as described above, the 3D stent image or the like is then combined with the image to be synthesized (the “3D image reconstructed for the purpose of synthesis” according to the present invention as shown in step R10 in FIG. )) Is set. Here, the “flag” may be anything corresponding to “1” (flag is set) or “0” stored in some register (not shown) provided in the 3D image display system. Note that the apparatus user may manually specify whether or not the image is a compositing target image during or after reconstruction.
[0057]
After that, a signal indicating that the compositing target image can be displayed is transmitted to the 3D display unit 9, and the process parallel to steps S2 to S31 and S32 in FIG. 2 (steps R2 to R31 and R32 in FIG. 8). Done. However, in the fourth modification, when the 3D image display switch 9a is ON, after the reconstructed synthesis target image or the 3D stent image is read, it is confirmed that the flag is set, After confirming that this is an image corresponding to the 3D blood vessel image currently displayed on the monitor 13c, both (3D stent image and 3D blood vessel image) are combined and the combined image is displayed under default conditions. (Step R31 in FIG. 8). In the case of combining a 3D blood vessel image and a 3D stent image, etc., since these images are originally created from the same captured image, there is no need to perform alignment, and automatic combining is performed without any particular problem. Can do.
[0058]
In addition, it is conceivable that the current image displayed on the 3D image monitor 13c has become a non-corresponding image due to the progress of image observation by a doctor or the like. It is recommended to perform appropriate processing. That is, as shown in FIG. 9 continuing from step R2 of FIG. 8, first, it is determined whether or not the image currently displayed on the monitor 13c and the compositing target image that has been reconstructed correspond to each other. (Step R301 in FIG. 9). This determination may be made based on, for example, comparison / contrast of shooting times associated with both images. This is because, as described above, the 3D blood vessel image, the 3D stent image, and the like are performed at the same time (that is, the imaging time is the same) for data collection. Here, if it corresponds (the shooting times coincide), the process may proceed to step R31 in FIG. 9 (same as step R31 in FIG. 8).
On the other hand, if they do not correspond (the shooting times do not match), as shown in step R302 of FIG. 9, the corresponding image is retrieved and called up and displayed on the monitor 13c. Needless to say, this search or the like can also be performed based on the shooting time. Note that the device user may manually specify which of the corresponding images.
[0059]
As described above, in the present invention, even a composite image can be automatically displayed (or not automatically displayed).
[0060]
【The invention's effect】
As described above, according to the three-dimensional image display system of the present invention, since there is a switching means for determining whether to automatically display a 3D image, it is possible to quickly and effortlessly display an image. The observation is not disturbed by the fact that the image is suddenly switched during the image observation.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration example of a three-dimensional display system according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a flow of processing relating to automatic or non-automatic display of a 3D image.
FIG. 3 is an explanatory diagram illustrating a specific example of a 3D image display switch.
FIG. 4 is an explanatory diagram showing a specific example of a 3D image display switch that is different from FIG. 3;
FIG. 5 is a flowchart showing a flow of processing for automatically turning a 3D image display switch from ON to OFF.
FIG. 6 is a flowchart showing a flow of processing for automatically turning a 3D image display switch from OFF to ON.
FIG. 7 is an explanatory diagram illustrating a screen display example when there is a displayable 3D image when the 3D image display switch is OFF.
FIG. 8 is a flowchart showing a flow of processing in which the present embodiment is applied to image composition.
FIG. 9 is a flowchart showing the flow of processing when the currently displayed image does not correspond to the compositing target image in FIG. 8;
[Explanation of symbols]
1 X-ray diagnostic equipment
2 X-ray tube
3 X-ray detector
4 C-arm
5 sleeper
6 A / D conversion unit
7 Digital image processing unit
8 Reconfiguration processing unit
9 3D image display unit
10 Recording device
11 LUT
12 Filtering unit

Claims (9)

In a three-dimensional image display system capable of displaying a 3D image based on data acquired by one or more medical image diagnostic apparatuses,
A three-dimensional image display system comprising switching means for determining a mode for whether or not to automatically display the 3D image after completion of the reconstruction of the 3D image. When the mode is determined to be automatically displayed, if there is any operation by the user of the apparatus, the mode is automatically shifted to not automatically displaying. The three-dimensional image display system according to claim 1. When the mode is determined not to perform automatic display, if no processing is performed for a certain period, the mode is automatically shifted to automatic display. The three-dimensional image display system according to claim 1. The three-dimensional image display system according to claim 3, wherein the length of the predetermined period can be set. When it is determined that the mode is not automatically displayed, means for notifying information indicating that the 3D image can be displayed is provided after the reconstruction of the 3D image is completed. The three-dimensional image display system according to claim 1. The information indicating that the display is possible is one or more of a thumbnail image of the 3D image, subject name, subject information, examination date and time, examination name, and reconstruction conditions. Item 6. The three-dimensional image display system according to item 5. 7. The three-dimensional image display system according to claim 6, wherein the thumbnail image is one of a surface rendering image, a volume rendering image, a MIP image, a MinIP image, and an X-ray projection image subjected to 3D image processing. When the mode is determined to be automatically displayed, if the 3D image is an image reconstructed for the purpose of synthesis, the 3D image and the currently displayed image are automatically synthesized. The three-dimensional image display system according to claim 1, wherein the composite image is automatically displayed. When the mode is determined to automatically display, if the 3D image is an image reconstructed for the purpose of synthesis, the 3D image and the image corresponding to the 3D image are automatically synthesized. 3. The three-dimensional image display system according to claim 1, wherein the composite image is automatically displayed.

Images