阅读说明：本技术 图像引导方法及装置、医疗设备、计算机可读存储介质 (Image guidance method and device, medical equipment and computer readable storage medium ) 是由 苟天昌 闫浩 于 2019-05-29 设计创作，主要内容包括：本公开提供了一种图像引导方法及装置、医疗设备、计算机可读存储介质。医疗设备包括患者固定机构和图像机构,图像机构被构造为能够通过围绕患者固定机构旋转在若干个拍摄角度下对患者固定机构上的患者进行医学影像的拍摄,图像引导方法包括：控制图像机构围绕患者固定机构旋转；在图像机构旋转至任一拍摄角度时,获取第一图像,第一图像是通过图像机构在第一拍摄角度下拍摄的所述患者的医学影像,第一拍摄角度是图像机构当前所旋转至的拍摄角度；在获取得到与第一图像对应的第二图像时,在采用第一图像和第二图像的组合表示患者当前位置状态的基础上进行图像引导。本公开可以帮助减小相邻两次患者当前位置状态检测之间的时间间隔。(The disclosure provides an image guide method and device, medical equipment and a computer readable storage medium. The medical device includes a patient holding mechanism and an image mechanism configured to enable the taking of medical images of a patient on the patient holding mechanism by rotation about the patient holding mechanism at a plurality of taking angles, the image guidance method including: controlling rotation of the image mechanism about the patient immobilization mechanism; when the image mechanism rotates to any shooting angle, acquiring a first image, wherein the first image is a medical image of the patient shot by the image mechanism at the first shooting angle, and the first shooting angle is the shooting angle to which the image mechanism currently rotates; when a second image corresponding to the first image is acquired, image guidance is performed on the basis of the current position state of the patient expressed by the combination of the first image and the second image. The present disclosure may help reduce the time interval between two consecutive detections of the current position status of a patient.)

An image guidance method applied to a medical apparatus including a patient fixing mechanism and an image mechanism configured to enable photographing of medical images of a patient on the patient fixing mechanism at a plurality of photographing angles by rotating around the patient fixing mechanism, the image guidance method comprising:

controlling the image mechanism to rotate about the patient fixation mechanism;

when the image mechanism rotates to any shooting angle, acquiring a first image; wherein the first image is a medical image of the patient taken by the imaging mechanism at a first capture angle to which the imaging mechanism is currently rotated;

after a second image corresponding to the first image has been acquired, performing image guidance on the basis of a current position state of the patient represented by a combination of the first image and the second image; the second image is the medical image of the patient that the image mechanism shot under the second shooting angle, the second shooting angle is in among a plurality of shooting angle with contained angle between the first shooting angle is the shooting angle of first preset angle, the angle interval between two arbitrary adjacent shooting angles in a plurality of shooting angle all is less than first preset angle.

The method of claim 1, wherein the number of capture angles is a consecutive number of capture angles equally angularly spaced, the controlling the rotation of the image mechanism about the patient fixture mechanism comprising:

and controlling the image mechanism to rotate around the patient fixing mechanism at a constant speed so that the image mechanism continuously rotates through the plurality of shooting angles at equal time intervals.

The method of claim 1, further comprising:

acquiring a two-dimensional projection image of a three-dimensional reconstruction image of the patient based on computed tomography at each shooting angle;

correspondingly, the image guidance based on the current position state of the patient represented by the combination of the first image and the second image comprises:

performing two-dimensional-two-dimensional registration between the first image and the two-dimensional projection image at the first shooting angle to obtain a first registration result;

performing two-dimensional-two-dimensional registration between the second image and the two-dimensional projection image at the second shooting angle to obtain a second registration result;

correcting a relative positional deviation between the patient current positional state and the patient initial positional state based on the first and second registration results.

The method of claim 1, further comprising:

acquiring a three-dimensional magnetic resonance image of the patient, wherein the three-dimensional magnetic resonance image is marked with at least one region range of an object of interest;

acquiring a reference three-dimensional image of the patient, the reference three-dimensional image being a three-dimensional reconstructed image based on computed tomography;

performing a three-dimensional registration between the three-dimensional magnetic resonance image and the reference three-dimensional image to complete the labeling of the region of each of the objects of interest in the reference three-dimensional image;

correspondingly, the image guidance based on the current position state of the patient represented by the combination of the first image and the second image comprises:

image guidance is performed on the basis of representing an initial position state of the patient using the reference three-dimensional image and representing a current position state of the patient using a combination of the first image and the second image.

The method of claim 4, wherein said image-guiding based on representing the patient initial position state with the reference three-dimensional image and the patient current position state with a combination of the first image and the second image comprises:

performing two-three dimensional registration between the combination of the first image and the second image and the reference three dimensional image to obtain a third registration result;

correcting a relative positional deviation between the patient current positional state and the patient initial positional state based on the third registration result.

The method of claim 1, further comprising:

after at least one third image corresponding to the first image has been acquired, error correcting the current position status of the patient represented by the combination of the first and second images using at least one bi-two-dimensional image combination;

the two-dimensional image combination is the combination between the first image and the third image, the third image is the medical image of the patient, which is shot by the image mechanism at a third shooting angle, and the third shooting angle is a shooting angle, which is smaller than a second preset angle, of the plurality of shooting angles and the included angle between the second shooting angle.

The method of claim 6, wherein error correcting the current patient position status represented by the combination of the first image and the second image with at least one bi-two-dimensional image combination comprises:

calculating a state parameter representing the current position state of the patient based on each two-dimensional image combination;

error correction is performed on the state parameters calculated based on the combination of the first image and the second image using the state parameters respectively corresponding to each of the two-dimensional image combinations.

An image guidance apparatus applied to a medical device including a patient fixing mechanism and an image mechanism configured to enable photographing of a medical image of a patient on the patient fixing mechanism at a plurality of photographing angles by rotating around the patient fixing mechanism, the image guidance apparatus comprising:

a control module for controlling rotation of the imaging mechanism about the patient fixation mechanism;

the first acquisition module is used for acquiring a first image when the image mechanism rotates to any shooting angle; wherein the first image is a medical image of the patient taken by the imaging mechanism at a first capture angle to which the imaging mechanism is currently rotated;

the image guiding module is used for carrying out image guiding on the basis that the current position state of the patient is represented by the combination of the first image and the second image after the second image corresponding to the first image is acquired when at least one second image corresponding to the first image is acquired; the second image is the medical image of the patient that the image mechanism shot under the second shooting angle, the second shooting angle is in among a plurality of shooting angle with contained angle between the first shooting angle is the shooting angle of first preset angle, the angle interval between two arbitrary adjacent shooting angles in a plurality of shooting angle all is less than first preset angle.

The apparatus of claim 8, wherein the number of capture angles is a consecutive number of capture angles equally angularly spaced, the control module further to:

and controlling the image mechanism to rotate around the patient fixing mechanism at a constant speed so that the image mechanism continuously rotates through the plurality of shooting angles at equal time intervals.

The apparatus of claim 8, further comprising:

the second acquisition module is used for acquiring a two-dimensional projection image of the three-dimensional reconstruction image of the patient based on the computed tomography at each shooting angle;

correspondingly, the image guidance module comprises:

a first registration unit, configured to perform two-dimensional-two-dimensional registration between the first image and the two-dimensional projection image at the first shooting angle to obtain a first registration result;

a second registration unit, configured to perform two-dimensional-two-dimensional registration between the second image and the two-dimensional projection image at the second shooting angle to obtain a second registration result;

a first correction unit for correcting a relative positional deviation between the patient current positional state and the patient initial positional state based on the first registration result and the second registration result.

The apparatus of claim 8, further comprising:

a third acquisition module configured to acquire a three-dimensional magnetic resonance image of the patient, the three-dimensional magnetic resonance image having a region range of at least one object of interest marked therein;

a fourth acquisition module for acquiring a reference three-dimensional image of the patient, the reference three-dimensional image being a three-dimensional reconstructed image based on computed tomography;

a registration module for performing a three-dimensional-three-dimensional registration between the three-dimensional magnetic resonance image and the reference three-dimensional image to complete the labeling of the region range of each of the objects of interest in the reference three-dimensional image;

correspondingly, the image guidance module is further configured to:

image guidance is performed on the basis of representing an initial position state of the patient using the reference three-dimensional image and representing a current position state of the patient using a combination of the first image and the second image.

The device of claim 11, wherein the image guidance module comprises:

a third registration unit, configured to perform two-three dimensional registration between the reference three-dimensional image and a combination of the first image and the second image, respectively, to obtain a third registration result;

a second correction unit for correcting a relative positional deviation between the patient current position state and the patient initial position state based on the third registration result.

The apparatus of claim 8, further comprising:

an error correction module for performing error correction on the current position state of the patient represented by the combination of the first image and the second image by using at least one two-dimensional image combination after at least one third image corresponding to the first image is acquired;

the two-dimensional image combination is the combination between the first image and one of the third images, the third image is the medical image of the patient that the image mechanism shot under the third shooting angle, the third shooting angle is the shooting angle that the included angle between the plurality of shooting angles and the second shooting angle is less than the second preset angle.

The apparatus of claim 8, wherein the error correction module comprises:

a calculation unit for calculating a state parameter representing a state of the current position of the patient based on each of the two-dimensional image combinations, respectively;

an error correction unit configured to perform error correction on the state parameters calculated based on the combination of the first image and the second image, using the state parameters respectively corresponding to each of the two-dimensional image combinations.

A medical device, wherein the medical device comprises a processor and a memory, the memory having stored therein program instructions, the processor being configured to invoke the program instructions in the memory to perform the method of any of claims 1 to 7.

A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions configured to, when executed by a processor, cause the processor to perform the method of any of claims 1 to 7.