CN103356197A - Measuring method and device for solving equivalent square wild in approximate rectangle method for radiotherapy - Google Patents
Measuring method and device for solving equivalent square wild in approximate rectangle method for radiotherapy Download PDFInfo
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- CN103356197A CN103356197A CN201210093004XA CN201210093004A CN103356197A CN 103356197 A CN103356197 A CN 103356197A CN 201210093004X A CN201210093004X A CN 201210093004XA CN 201210093004 A CN201210093004 A CN 201210093004A CN 103356197 A CN103356197 A CN 103356197A
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Abstract
The invention relates to the technical field of tumor target region measuring methods and discloses a measuring method and device for solving an equivalent square wild in an approximate rectangle method for radiotherapy. The measuring method is characterized in that two parallel horizontal measuring lines which can move relatively and two parallel vertical measuring lines which can move relatively are used for measuring a target region for multiple times to obtain multiple rectangles; the side lengths of equivalent squares of the multiple rectangles are solved respectively through a formula, the average value of the side lengths of the equivalent squares of the multiple rectangles is solved, S indicates the side lengths of the equivalent squares, A indicates the lengths of the rectangles, and B indicates the widths of the rectangles. Multiple approximate rectangles are obtained by measuring the tumor target region for multiple times, the equivalent squares of the multiple approximate rectangles are solved, and then the equivalent square wild is obtained. The approximation degree of the side lengths of the equivalent square wild obtained in the measuring method and the side lengths of the equivalent square wild of a practical tumor target region is high, namely accuracy of the equivalent square wild is high, the phenomena of subjective randomness and preciseness shortage are effectively removed, accuracy of the daily therapeutic dose of patients is ensured, and the therapeutic effect of the patients is effectively improved.
Description
Technical field
The present invention relates to the technical field of tumor target area measuring method, relate in particular to radiotherapy with approximate rectangular measuring method and the device of asking equivalent square field.
Background technology
Now, the number of tumor invasion increases year by year, one of three large means of radiotherapy chamber treatment malignant tumor patient, and the tumour patient more than 70% all needs to carry out radiotherapy.
In tumour radiotherapy, demand is got the prescribed dose of tumor target area, to obtain patient's prescribed dose every day, if target region shape is square, then can directly look into the percentage depth dose table and calculate acquisition, but in clinical, the shape of tumor mostly is the irregular lymphatic drainage district that maybe needs to shine, the target area seldom is foursquare, mostly be rectangle or irregular shape, in reality, use rectangular field and irregular open country more, like this, then must change into square open country to rectangular field or irregular open country and just can look into the percentage depth dose table.
In the prior art, clinical usable floor area girth can fast and effeciently change into square to rectangular field wild than method.Irregular open country is changed into square wild, then need first irregular open country to be changed into rectangular field, change into again square wild, the method is called as " approximate rectangular method ", " approximate rectangular method " is because simple and convenient, be widely used for clinical, but also there is obvious deficiency in the method: it uses and still is in initial condition, with approximately amount amount, the roughly estimation of common ruler, with strong subjective randomness, so that for same target area, different people can obtain different equivalent square fields, thereby the prescribed dose that obtains is also different, this so that the irradiated accuracy of dose of tumor patient can not get ensureing, and then affect patient's therapeutic effect.
Summary of the invention
The object of the present invention is to provide radiotherapy to ask the measuring method of equivalent square field with approximate rectangular method, be intended to solve the problem that approximate rectangular method of the prior art exists the subjective random consequently precision of the prescribed dose of tumor patient can not be guaranteed.
The present invention realizes like this, the measuring method of equivalent square field is asked in radiotherapy with approximate rectangular method, the one square ruler frame that is enclosed by two parallel rules ruler vertical with two is provided, and described square ruler frame is provided with two and is parallel to described parallel rule and can be parallel to described vertical ruler and relatively-movable vertical amount line with respect to mobile parallel amount line and two; Utilize two described level amount lines with two described vertical amount lines the target area repeatedly to be measured, obtain a plurality of rectangles; Utilize formula
Ask for respectively the equivalent square length of side of above-mentioned a plurality of rectangles, and ask for the average of the square length of side of a plurality of described equivalences, S is the equivalent foursquare length of side, and A is the length of rectangle, and B is the width of rectangle.
According to above-mentioned measuring method, the measuring device that the present invention also provides radiotherapy to ask equivalent square field with approximate rectangular method, as follows:
The measuring device of equivalent square field is asked in radiotherapy with approximate rectangular method, comprise that the square ruler frame, two that is enclosed by two parallel rules ruler vertical with two is parallel to respectively described parallel rule and two ends and can be parallel to respectively along the level amount line and two that two described vertical rulers move respectively the vertical amount line that described vertical ruler and two ends can be moved along two described two horizontal rulers respectively.
Compared with prior art, utilize above-mentioned method that the target area of tumor is taken multiple measurements, can obtain a plurality of approximate rectangular of target area, and it is square to ask for this a plurality of approximate rectangular equivalences, ask for again the foursquare average of a plurality of equivalences, it is the equivalent square field of target area, like this, so that the degree of approximation of the area of the equivalent square field of obtaining and actual tumor target area is just higher, namely the precision of equivalent square field is higher, effectively get rid of subjective random and not rigorous phenomenon, so that the precision of patient's therapeutic dose every day is guaranteed Effective Raise patient's therapeutic effect.
In accountant, the movement on the square ruler frame realizes repeatedly measurement to the target area with vertical amount line in fact to utilize level amount line, and obtains a plurality of rectangles, and then calculates the equivalence square of a plurality of rectangles, reaches the high purpose of target area equivalent square field precision.
Description of drawings
The radiotherapy that Fig. 1 provides for the embodiment of the invention schematic diagram of equivalent square field accountant.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with concrete accompanying drawing realization of the present invention is described in detail.
As described in Figure 1, be a preferred embodiment provided by the invention.
In the present embodiment, can utilize following radiotherapy to obtain the equivalent square field of tumor target area with the measuring method of approximate rectangular method and equivalent square field, specific as follows:
The one square ruler frame 11 that is enclosed by two parallel rules 111 ruler 112 vertical with two is provided, and square ruler frame 11 is provided with two and is parallel to described parallel rule 111 and can be parallel to described vertical ruler 112 and relatively-movable vertical amount line 14 with respect to mobile parallel amount line 15 and two.
Utilize two mutual parallel and relatively-movable level amount lines 15 repeatedly the target area to be measured respectively with two mutual parallel its relatively-movable vertical amount lines 14, thereby can obtain a plurality of rectangles, and ask for the equivalent foursquare length of side of these a plurality of rectangles, obtain comparatively accurately equivalent square field of target area.
When asking for the equivalent foursquare length of side of rectangle, can utilize formula
Ask for, wherein S is the equivalent foursquare length of side, and A is the length of rectangle, B is the width of rectangle, like this, can obtain the equivalent foursquare length of side of a plurality of rectangles, thereby a plurality of equivalent square that obtains is averaged, namely ask its average, then obtained the equivalent square field of target area.
Utilize above-mentioned method that the target area of tumor is taken multiple measurements, certainly, be difficult to so that the area of the area of rectangle and target area equates, the just area approximation that obtains this moment is approximate rectangular in the target area.Can obtain a plurality of approximate rectangular of target area to repeatedly measuring of target area, and utilize formula
Ask for a plurality of approximate rectangular equivalent foursquare length of sides, ask for again the foursquare average of a plurality of equivalences that this obtains, namely obtain the equivalent square field of target area, the degree of approximation of the area of the equivalent square field that obtains and actual tumor target area is just higher, namely the precision of equivalent square field is higher, effectively get rid of subjective random and not rigorous phenomenon, so that the precision of patient's therapeutic dose every day is guaranteed Effective Raise patient's therapeutic effect.
In actual use, generally only carry out twice measurement, obtain two rectangles, ask respectively the equivalent foursquare length of side of two rectangles, obtain again this two foursquare averages of equivalence, namely obtain the equivalent square field of tumor target area, certainly, the number of times of measuring can be decided according to practical situation, is not limited in twice.
In practice, the operation that utilizes above-mentioned measuring method that the target area is measured is as follows:
Two level amount lines 15 are cut in respectively the outermost that the target area is parallel to level amount line 15 outward, mobile two vertical amount lines 14, certainly, in mobile process, vertical amount line 14 is parallel to vertical ruler 112 all the time, because the target area is irregular shape, so, behind the mobile two vertical amount lines 14, two vertical amount lines 14 can place on the target area, the rectangle that two level amount lines, 15 amount lines 14 vertical with two form namely has the target area part, non-target area part is also arranged, and some can be placed in the target area outside the rectangle of formation, like this, so that two areas of vertically measuring the target area part outside the lines 14 equal the area of the interior non-target area part of the rectangle of two level amount lines, 15 amount lines vertical with two, 14 formation, at this moment, read the length of 14 level amounts of two vertical amount lines line 15 and the length of 15 vertical amount lines 14 of two level amount lines at square ruler frame 11, then can obtain the size of first rectangle; Then, make two vertical amount lines 14 be cut in respectively the outermost that the target area is parallel to vertical amount line 14 outward, mobile two level amount lines 15, certainly, in mobile process, parallel amount line 15 is parallel to horizontal ruler 111 all the time, at this moment, two vertical amount lines 14 and two level amount lines 15 form another rectangle, and so that the area of the target area part outside another rectangle that two level amount lines, 15 amount lines 14 vertical with two form equals the area of the non-target area part in another rectangle, read the length of the vertical amount line 14 between the two level amount lines 15 and the length of 14 level amounts of two vertical amount lines line 15 this moment, then can obtain the area of another rectangle; More than obtain the area of two rectangles, and can utilize formula
Ask for respectively the equivalent foursquare length of side of above-mentioned two rectangles, ask for again two foursquare averages of equivalence, obtain the equivalent square field of target area.
In above-mentioned, in the process of asking for two rectangles, generally be difficult to accomplish so that the area of the non-target area part in the rectangle equals the area of the outer target area of rectangle part, general just approximately equal, so closely may carry out measurement repeatedly, ask for the area of a plurality of rectangles, like this, the precision of the equivalent square field that obtains is then higher.
Certainly, in the above-mentioned process of asking for two rectangles, also can so operate: keep making two vertical amount lines 14 to be cut in respectively the outermost that the target area is parallel to vertical amount line 14 outward, mobile two level amount lines 15, at this moment, two vertical amount lines 14 and two level amount lines 15 form a rectangle, and so that the area of the target area part outside the rectangle that two level amount lines, 15 amount lines 14 vertical with two are thought of as equals the area of the interior non-target area part of a rectangle of two level amount lines, 15 amount lines vertical with two, 14 formation, read the length of the vertical amount line 14 between the two level amount lines 15 and the length of 14 level amounts of two vertical amount lines line 15 this moment, then can obtain the area of this rectangle; Then, so that two level amount lines 15 are cut in respectively the outermost that the target area is parallel to level amount line 15 outward, mobile two vertical amount lines 14, can be so that the area of the outer target area part of another rectangle that two vertical amount lines 14 and two level amount lines 15 form equals the area of the interior non-target area of another rectangle that two level amount lines, 15 amount lines 14 vertical with two form, at this moment, read the length of 14 level amounts of two vertical amount lines line 15 and the length of 15 vertical amount lines 14 of two level amount lines, then can obtain the area of another rectangle.More than obtain the area of two rectangles, and can utilize formula
Ask for respectively the equivalent foursquare length of side of above-mentioned two rectangles, obtain the equivalent square field of target area.
According to above-mentioned method, the present embodiment also provides a kind of radiotherapy equivalent square field accountant 1.
Above-mentioned device 1 comprises the square ruler frame 11 that is enclosed by two parallel rules 111 ruler 112 vertical with two, the two level amount lines 15 and two that are parallel to the parallel rule 111 of square ruler frame 11 are parallel to the vertical amount line 14 of the vertical ruler 112 of square ruler frame 11, certainly, the mid portion of this square ruler frame 11 is hollow, generally speaking, the size of the size of parallel rule 111 and vertical ruler 112 is consistent, like this, parallel rule 111 is square with 11 on the square ruler frame that vertical ruler 112 encloses, certainly, the size of the size of parallel rule 111 and vertical ruler 112 also can be inconsistent, like this, the profile of square ruler frame 11 then is rectangle; The two ends of two level amount lines 15 are movably connected in respectively the vertical ruler 112 of square ruler frame 11 left and right sides, thereby the parallel rule 111 that is parallel to square ruler frame 11 upper and lower sides, certainly, when the both sides of level amount line 15 respectively when vertical ruler 112 moves, level amount line 15 remains the state that is parallel to parallel rule 111; The two ends of two vertical amount lines 14 are movably connected in respectively the parallel rule 111 of square ruler frame 11 upper and lower sides, thereby the vertical ruler 112 of parallel square ruler frame 11 left and right sides, certainly, when the both sides of vertical amount line 14 respectively when parallel rule 111 moves, this vertically measures the state that line 14 remains the vertical ruler 112 that is parallel to square ruler frame 11 both sides.Can form rectangular-shaped figure between two level amount lines 15 and the two vertical amount lines 14, namely because the target area is measured, irregular target area is converted to rectangular-shaped measurement.
The two ends of the level amount line 15 in above-mentioned are respectively equipped with movable the first slip alien 12 who is set in vertical ruler 112, and this first slip alien 12 can move at vertical ruler 112, thereby the level of drive amount line 15 is mobile at miter square; The two ends of the vertical amount line 14 in above-mentioned are respectively equipped with movable the second slip alien 13 who is set in parallel rule 111, and this second slip alien 13 can be mobile at parallel rule 111, thereby it is mobile at parallel rule to drive vertical amount line 14.
All be carved with scale on parallel rule 111 and the vertical ruler 112, when level amount line 15 or vertically measure line 14 after square ruler frame 11 is mobile, need read level amount line 15 or vertically measure the respectively position on vertical ruler 112 or parallel rule 111 of line 14, for the ease of reading scale, be carved with the first labelling on the first above-mentioned slip alien 12, this first labelling and 15 alignment of level amount line, thereby work as level amount line 15 after fixed position on the vertical ruler 112, then can utilize this first labelling to read its scale on vertical ruler 112; Be carved with the second labelling on the second above-mentioned slip alien 13, this second labelling and 14 alignment of vertical amount line, thus when vertically measuring line 14 after fixed position on the parallel rule 111, then can utilize this second labelling to read its scale on parallel rule 111.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the measuring method of equivalent square field is asked in radiotherapy with approximate rectangular method, it is characterized in that,
The one square ruler frame that is enclosed by two parallel rules ruler vertical with two is provided, and described square ruler frame is provided with two and is parallel to described parallel rule and can be parallel to described vertical ruler and relatively-movable vertical amount line with respect to mobile parallel amount line and two;
Utilize two described level amount lines with two described vertical amount lines the target area repeatedly to be measured, obtain a plurality of rectangles;
Utilize formula
Ask for respectively the equivalent square length of side of above-mentioned a plurality of rectangles, and ask for the average of the square length of side of a plurality of described equivalences, S is the equivalent foursquare length of side, and A is the length of rectangle, and B is the width of rectangle.
2. the measuring method of equivalent square field is asked in radiotherapy as claimed in claim 1 with approximate rectangular method, it is characterized in that, twice measurement carried out in described target area, obtains two rectangles.
3. radiotherapy as claimed in claim 2 equivalent square field measuring method, it is characterized in that, two described level amount lines are cut in respectively the outermost that described target area is parallel to described level amount line outward, mobile two described vertical amount lines, the area of the non-target area part that the rectangle that two described level amount lines and two described vertical amount lines are formed is interior equals the area of the outer target area of described rectangle part, obtains a rectangle; Two described vertical amount lines are cut in respectively the outermost that described target area is parallel to described vertical amount line outward, mobile two described level amount lines, the area of the non-target area part that another rectangle that two described vertical amount lines and two described level amount lines are formed is interior equals the area of the outer target area of described another rectangle part, obtains another rectangle; Ask for respectively the equivalent square length of side of described two rectangles; Ask for described two equivalent foursquare length of side averages.
4. the measuring method of equivalent square field is asked in radiotherapy as claimed in claim 2 with approximate rectangular method, it is characterized in that, two described vertical amount lines are cut in respectively the outermost that described target area is parallel to described vertical amount line outward, mobile two described level amount lines, the area of the non-target area part that the rectangle that two described vertical amount lines and two described level amount lines are formed is interior equals the area of the outer target area of described rectangle part, obtains a rectangle; Two described level amount lines are cut in respectively the outermost that described target area is parallel to described level amount line outward, mobile two described vertical amount lines, the area of the non-target area part that another rectangle that two described level amount lines and two described vertical amount lines are formed is interior equals the area of the outer target area of described another rectangle part, obtains another rectangle; Ask for the equivalent square length of side of described two rectangles; Ask for described two equivalent foursquare length of side averages.
5. the measuring device of equivalent square field is asked in radiotherapy with approximate rectangular method, it is characterized in that, comprise that the square ruler frame, two that is enclosed by two parallel rules ruler vertical with two is parallel to respectively described parallel rule and two ends and can be parallel to respectively along the level amount line and two that two described vertical rulers move respectively the vertical amount line that described vertical ruler and two ends can be moved along two described two horizontal rulers respectively.
6. the measuring device of equivalent square field is asked in radiotherapy as claimed in claim 5 with approximate rectangular method, it is characterized in that, the two ends of described level amount line are respectively equipped with the first slip alien that can move along described vertical ruler, described the first slip alien is sheathed on described vertical ruler, the two ends of described vertical amount line are respectively equipped with the second slip alien that can move along described horizontal ruler, and described the second slip alien is sheathed on described horizontal ruler.
7. the measuring device of equivalent square field is asked in radiotherapy as claimed in claim 6 with approximate rectangular method, it is characterized in that, described the first slip alien is provided with the first labelling that aligns with described level amount line, and described the second slip alien is provided with the second labelling that aligns with described vertical amount line.
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| CN201210093004.XA CN103356197B (en) | 2012-03-31 | 2012-03-31 | The approximate rectangular method of radiotherapy asks the measuring device of equivalent square field |
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