A kind of directionality DBS electrode and its localization method with cue mark
Technical field
The invention belongs to electro photoluminescence technical field of medical equipment more particularly to a kind of directionality DBS with cue mark
Electrode and its localization method.
Background technique
DBS therapy is a kind of deep brain stimulation (DBS) therapy, for treating a kind of genetic myodystony, mainly
It is that electrode is implanted to patient's intracerebral, certain nerve nucleus of its cerebral deep is stimulated with impulse generator, corrects abnormal big
Brain electricity loop, to mitigate these neurological symptoms.
Currently used directionality DBS electrode forms radial direction by multiple groups segmented electrode and arranges, such as patent
CN105263567A and US7668601.Since directionality DBS electrode in the course of surgery can not about substantially symmetrical about its central axis
The direction of electrode is determined by X ray image.
Summary of the invention
In view of the above-mentioned problems, the invention proposes a kind of directionality DBS electrode and its method with cue mark.
A kind of directionality DBS electrode with cue mark, comprising: medical image is set on the cylindrical body of DBS electrode
In visible label so that obtaining the rotation position of DBS electrode by the mark position presented in medical image.
The label is the visible metal band-shaped label composition of two sections of X ray images, and two ribbons label is located at cylinder
On body side surface and it is parallel to central axis, two ribbons mark arc length in pi/2 between π, and two ribbons label at least one
The arc length angle of central axis corresponding to part is overlapped, so that total arc length angle of corresponding central axis is π.
The label is two dotted mark groups of the visible metal of X ray image into and the position of two dotted labels
It is not equal to 0 and π relative to radian corresponding to central axis for different height on cylindrical sides, and between two dotted labels
Any angle.
Any angle for being not equal to 0 and π is with π/4 π/4 to 3 for preferred scope.
The different height is more than or equal to the electrode whole height of half with the difference in height between two dotted labels
For preferred scope.
The label further includes the dotted label of the visible metal of third X ray image, and the position of the label is cylindrical body
It is different from the height of other two dotted labels of metal on side, and relative to central axis institute between any one dotted label
Corresponding radian is π.
The dotted label of metal can be marked with metal strip or metal rectangular dress label replaces.
A kind of localization method based on the directionality DBS electrode with cue mark, comprising:
According to certain rotary step rotation electrode, every rotation is primary to shoot lower medical image, and to two in image
The length of band mark and position recorded after at table;Medical image is shot during surgery and is measured, according to what is recorded before
Data lookup table in table can determine electrode rotary angle.
A kind of localization method based on the directionality DBS electrode with cue mark, comprising:
Using any one in two dotted labels as angle mark, another is as bearing mark, with angle mark
The shaft section at place is primary face, and X-ray is perpendicular to datum level, then in medical image, angle mark is perpendicular to central axis
The shortest distance is equal to Rcos θ, and R is electrode radius, and θ is the shaft section at current angular label place and the angle of primary face, passes through
Judge that bearing mark can judge the direction of rotation of electrode relative to the position of angle mark in medical image.
The dotted label of the visible metal of third X ray image as verification label, in medical image perpendicular to
The shortest distance of central axis is equal to Rcos θ, and R is electrode radius, and θ is to verify mark relative to the shaft section where angle mark
The angle that shaft section where note is rotated plays the role of convenient for calculating, verification, image recognition.
The beneficial effects of the present invention are:
By the way that visible label in medical image is arranged on the cylindrical body of DBS electrode, so that by being in medical image
Existing mark position easily obtains the rotation position of DBS electrode.Help to improve the efficiency and precision of medical procedure.
Detailed description of the invention
Fig. 1 is in embodiment one with the electrode schematic diagram of two sections of metal band-shaped labels.
Fig. 2 is in embodiment one with the positioning schematic diagram of the electrode of two sections of metal band-shaped labels.
Fig. 3 is the metal band-shaped label schematic diagram in embodiment two.
Fig. 4 is in embodiment three with the positioning schematic diagram of the electrode of two dotted labels of metal.
Fig. 5 is in example IV with the positioning schematic diagram of the electrode of three dotted labels of metal.
Fig. 6 is in embodiment five with the positioning schematic diagram of the electrode of three metal band-shaped labels.
Wherein, 1- angle mark, 2- bearing mark, 3- verification label.
Specific embodiment
With reference to the accompanying drawing, it elaborates to embodiment.
A kind of directionality DBS electrode with cue mark, comprising: medical image is set on the cylindrical body of DBS electrode
In visible label so that obtaining the rotation position of DBS electrode by the mark position presented in medical image.
Embodiment one
As shown in Figure 1, being formed labeled as by the visible metal band-shaped label of two sections of X ray images, two ribbon marker bits
In on cylindrical sides and being parallel to central axis, two ribbons mark arc length in pi/2 between π, and two ribbons mark
The arc length angle of central axis corresponding at least part is overlapped, so that total arc length angle of corresponding central axis is π.
As shown in Fig. 2, a kind of localization method based on the directionality DBS electrode with cue mark, comprising:
According to certain rotary step rotation electrode, every rotation is primary to shoot lower medical image, and to two in image
The length of band mark and position recorded after at table;Medical image is shot during surgery and is measured, according to what is recorded before
Data lookup table in table can determine electrode rotary angle.
Embodiment two
As shown in figure 3, two ribbons label can be integrally formed.
Embodiment three
As shown in figure 4, the label is two dotted mark groups of the visible metal of X ray image at and two dotted
The position of label is different height on cylindrical sides, and is relative to radian corresponding to central axis between two dotted labels
Not equal to 0 and any angle of π.
Any angle for being not equal to 0 and π is with π/4 π/4 to 3 for preferred scope.
The different height is more than or equal to the electrode whole height of half with the difference in height between two dotted labels
For preferred scope.
A kind of localization method based on the directionality DBS electrode with cue mark, comprising:
Using any one in two dotted labels as angle mark, another is as bearing mark, with angle mark
The shaft section at place is primary face, and X-ray is perpendicular to datum level, then in medical image, angle mark is perpendicular to central axis
The shortest distance is equal to Rcos θ, and R is electrode radius, and θ is the shaft section at current angular label place and the angle of primary face, passes through
Judge that bearing mark can judge the direction of rotation of electrode relative to the position of angle mark in medical image.
Example IV
As shown in figure 5, the label further includes the dotted label of the visible metal of third X ray image, the position of the label
It is set to the height for being different from other two dotted labels of metal on cylindrical sides, and opposite between any one dotted label
Radian corresponding to central axis is π.
The dotted label of the visible metal of third X ray image as verification label, in medical image perpendicular to
The shortest distance of central axis is equal to Rcos θ, and R is electrode radius, and θ is to verify mark relative to the shaft section where angle mark
The angle that shaft section where note is rotated plays the role of convenient for calculating, verification, image recognition.
Embodiment five
As shown in fig. 6, the dotted label of metal can be marked with metal strip or metal rectangular dress label replaces.
This embodiment is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.