CN210301030U - Caliper for accurately measuring kidney depth in tomography image - Google Patents
Caliper for accurately measuring kidney depth in tomography image Download PDFInfo
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- CN210301030U CN210301030U CN201920326141.0U CN201920326141U CN210301030U CN 210301030 U CN210301030 U CN 210301030U CN 201920326141 U CN201920326141 U CN 201920326141U CN 210301030 U CN210301030 U CN 210301030U
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Abstract
The utility model relates to a caliper for accurately measuring the depth of the kidney in a tomographic image, which comprises a left midpoint calibration caliper sleeve component and a right sliding vernier caliper sleeve component, the bottom ends of which are connected; the upper part of the middle point calibration caliper sleeve component is provided with a horizontal middle point calibration caliper upper measuring claw and a middle point calibration caliper lower measuring claw which are parallel up and down, an upper middle point calibration connecting rod and a lower middle point calibration connecting rod which are equal in length are connected between the middle point calibration caliper upper measuring claw and the middle point calibration caliper lower measuring claw in a hinged mode, and the hinged position is a middle point shaft; the upper part of the sleeve component of the sliding vernier caliper is provided with an upper measuring claw of the sliding vernier caliper and a lower measuring claw of the sliding vernier caliper which are horizontal and parallel up and down. The utility model discloses simplify traditional manual measurement to once calculate and twice measurement, omit mid point mark process, slide caliper and kidney major axis keep strict parallel relation when guaranteeing to measure the kidney degree of depth simultaneously, therefore save time and the more traditional manual measurement height of accuracy can improve clinical work efficiency and further improve kidney GFR's quantitative precision.
Description
Technical Field
The utility model relates to a kidney sectional image's auxiliary instrument, concretely relates to a slide caliper rule that is arranged in the dirty degree of depth precision measurement of sectional image kidney.
Background
The nuclide renal dynamic imaging is a nuclear medicine imaging examination widely developed in clinic, and the examination can accurately and quantitatively calculate a Glomerular Filtration Rate (GFR), which is a core function parameter of bilateral kidneys, through nuclide imaging, so as to guide selection of a clinical treatment scheme, and the nuclide renal dynamic imaging is a necessary examination item for clinical renal function assessment.
The Gates method is an internationally accepted classical algorithm for GFR quantitative calculation (AJR Am J Roentgenol, 1982 Mar;138(3): 565-70.), and the depth from the geometric midpoint of the kidney to the body surface (called the kidney depth for short) has great influence on the calculation result, thus directly determining the accuracy of the diagnosis report. In order to accurately determine the depth of the kidney, several quantitative methods have been developed:
① Tonnesen formula, which is an approximate estimation method in 1974 fitted by Tonnesen et al by regression fitting of depth of chamfer of kidney by ultrasound measurement of patients of different body types, approximately fits the mean depth of chamfer of both kidneys according to the height and weight data of the patients, thereby approximately representing the depth of vertical section of both kidneys, and thus has a great error and cannot quantify the depth of both right and left kidneys, respectively (Proceedings of the International Symposium on radiatus in physiology. Stuttgart: April 1974: 79-86)
② lateral nuclide imaging method, which comprises the steps of ordering a patient to lie on the side after the renal dynamic nuclide imaging is finished, and statically imaging the body side of the patient, wherein more radioactivity still exists in the kidney, so as to measure the distance between the geometric midpoint of the renal lateral nuclide image and the body surface nuclide image (J Nucl Med. 1998 Oct;39(10): 1822-5), although the measurement method is more accurate than the Tonnesen formula method, the method still cannot respectively quantify the depth of the left kidney and the right kidney because the spatial resolution of the nuclide image is poor, the radioactive counting rate is low during the examination, the same error is large, and the signals of the left kidney and the right kidney are highly overlapped, and meanwhile, for the patient with the nuclide signal lower due to the renal function, the kidney clear image cannot be obtained, so that the kidney depth quantification cannot be carried out by the method.
③ Multi-Angle projection three-dimensional reconstruction method, as disclosed in the published patent 106108931A, it can be used to calculate the distance from the projected center of gravity of the kidney to the body surface by computer based on three-dimensional reconstruction algorithm by additionally acquiring images of renal nuclides at multiple angles, however, it has not been clinically verified, the multi-angle acquisition requires an additional SPECT tomography for each patient, which doubles the examination time, and is not suitable for patients with poor renal function and lower nuclide signals as with the method ②.
④ tomographic image measurement method, which directly measures the distance from the geometric midpoint of the kidney to the body surface in the recent CT or MRI tomographic image of the patient and combines with the image ruler to accurately measure the depth of the kidney, because the CT or MRI image is a tomographic image with extremely high spatial resolution, the method not only can quantitatively and accurately measure bilateral kidneys, but also can separately measure bilateral kidneys, and is the gold standard for clinical kidney depth measurement research (J Nucl Med. 1993 Oct;34(10): 1766-9.).
However, in practice, tomographic measurements mostly require accurate measurements of kidney tomograms in patient image films by nuclear medicine physicians. The length from the long diameter of the kidney to the body surface from the upper bound can be measured by the vernier caliper to calculate the depth of the kidney, but the accurate parallel of the vernier caliper and the long diameter of the kidney and the consistency of the measured starting point and the measured stopping point are difficult to guarantee when the length is obtained by twice clamping, and errors (especially the kidney with irregular shape or the kidney with pathological changes such as tumor dropsy) are easy to generate. The accurate measurement needs six steps of operation on the maximum tangent plane diagram by means of a caliper, a ruler and a marking pen: the method comprises the steps of measuring the length of the upper and lower boundaries of the long axis of the kidney, calculating the position of the midpoint of the upper and lower boundaries, marking the midpoint, measuring the distance from the midpoint to the body surface, measuring the length of a ruler, calculating the depth (two-step calculation, three-time manual measurement and one-time midpoint marking), increasing the complexity of clinical work and the inaccuracy of results due to complex and time-consuming operation and large manual error, and easily damaging the image film of a patient during midpoint marking.
Disclosure of Invention
The utility model aims at providing a slide caliper rule that is arranged in tomographic image kidney degree of depth precision measurement can effectively simplify kidney degree of depth measurement's step on precision measurement's basis.
The utility model discloses the technical scheme who adopts does:
a slide caliper rule that is arranged in kidney degree of depth precision measurement in tomogram, its characterized in that:
the vernier caliper comprises a middle point calibration caliper sleeve assembly on the left side and a sliding vernier caliper sleeve assembly on the right side, wherein the bottom ends of the middle point calibration caliper sleeve assembly and the sliding vernier caliper sleeve assembly are connected;
the upper part of the middle point calibration caliper sleeve component is provided with a horizontal middle point calibration caliper upper measuring claw and a middle point calibration caliper lower measuring claw which are parallel up and down, an upper middle point calibration connecting rod and a lower middle point calibration connecting rod which are equal in length are connected between the middle point calibration caliper upper measuring claw and the middle point calibration caliper lower measuring claw in a hinged mode, and the hinged position of the two middle point calibration connecting rods is a middle point shaft;
the upper part of the sleeve component of the sliding vernier caliper is provided with an upper measuring claw of the sliding vernier caliper and a lower measuring claw of the sliding vernier caliper which are horizontal and parallel up and down.
The midpoint calibrating caliper sleeve component comprises a midpoint calibrating caliper at the upper part and a midpoint calibrating caliper sliding sleeve at the lower part, and the midpoint calibrating caliper is inserted into the midpoint calibrating caliper sliding sleeve from top to bottom;
the upper measuring claw of the midpoint calibrating caliper is arranged on the side surface of the top end of the midpoint calibrating caliper, and the lower measuring claw of the midpoint calibrating caliper is arranged on the side surface of the top end of the sliding sleeve of the midpoint calibrating caliper.
The wall of the sliding sleeve of the midpoint calibration caliper is provided with a hole and a midpoint calibration caliper adjusting button, and the midpoint calibration caliper adjusting button is a horizontal bolt.
The sliding vernier caliper sleeve assembly comprises an upper sliding vernier caliper and a lower sliding vernier caliper sliding sleeve, the sliding vernier caliper comprises an upper movable ruler and a lower fixed sleeve, the movable ruler is inserted into the fixed sleeve from top to bottom, and the fixed sleeve is inserted into the sliding vernier caliper sliding sleeve from top to bottom;
the upper measuring claw of the sliding vernier caliper is arranged on the side surface of the top end of the movable ruler, and the lower measuring claw of the sliding vernier caliper is arranged on the side surface of the top end of the fixed sleeve.
The fixed sleeve wall is provided with a hole and a sliding vernier caliper adjusting button, and the sliding vernier caliper adjusting button is a horizontal bolt.
The sliding vernier caliper sliding sleeve wall is provided with a hole and a sliding vernier caliper sliding sleeve adjusting button, and the sliding vernier caliper sliding sleeve adjusting button is a horizontal bolt.
The bottom of the middle point calibration caliper sleeve assembly and the bottom of the sliding vernier caliper sleeve assembly on the right side are connected through a horizontal connecting cross beam, and the middle point calibration caliper sleeve assembly and the sliding vernier caliper sleeve assembly on the right side are both perpendicular to the connecting cross beam.
The utility model has the advantages of it is following:
the utility model relates to a slide caliper rule can make independent twice calculation and cubic measurement simplify to simple once calculate and twice measurement to omit mid point mark process, and slide caliper rule and kidney major diameter keep strict parallel relation when can guarantee to measure the kidney degree of depth simultaneously, therefore save time and accuracy are more traditional manual to be measured the height, can improve clinical work efficiency and further improve kidney GFR's quantitative precision, make the patient benefit.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a schematic view of the measurement of the present invention.
In the figure, 1-midpoint calibration caliper, 2-midpoint calibration caliper adjusting button, 3-midpoint calibration caliper sliding sleeve, 4-midpoint calibration caliper upper measuring claw, 5-midpoint calibration caliper lower measuring claw, 6-midpoint calibration connecting rod, 7-midpoint shaft, 8-sliding vernier caliper, 9-sliding vernier caliper adjusting button, 10-sliding vernier caliper sliding sleeve, 11-sliding vernier caliper upper measuring claw, 12-sliding vernier caliper lower measuring claw, 13-connecting beam, 14-sliding vernier caliper sliding sleeve adjusting button, 15-movable ruler and 16-fixed sleeve.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a slide caliper rule that is arranged in tomography dirty degree of depth precision measurement of kidney, including left mid point demarcation slide caliper rule sleeve subassembly and the slip vernier caliper rule sleeve subassembly on right side, the two bottom is connected. All components are made of stainless steel metal material. The upper part of the middle point calibration caliper sleeve component is provided with an upper horizontal middle point calibration caliper measuring claw 4 and a lower middle point calibration caliper measuring claw 5 which are parallel up and down, an upper middle point calibration connecting rod 6 and a lower middle point calibration connecting rod 6 which are equal in length are connected between the upper middle point calibration caliper measuring claw and the lower middle point calibration caliper measuring claw in a hinged mode, and the hinged position of the two middle point calibration connecting rods 6 is a middle point shaft. The upper and lower measuring claws of the middle point calibrating caliper sleeve component are symmetrically connected with middle point calibrating connecting rods 6 with equal length, the tail ends of the connecting rods can be movably connected through a middle point shaft 7, and the middle point shaft 7 can move along with the measuring claws so as to be always positioned at the middle point position between the measuring claws. The upper part of the sleeve component of the sliding vernier caliper is provided with an upper measuring claw 11 of the sliding vernier caliper and a lower measuring claw 12 of the sliding vernier caliper which are horizontal and parallel up and down.
The midpoint calibrating caliper sleeve component comprises a midpoint calibrating caliper 1 at the upper part and a midpoint calibrating caliper sliding sleeve 3 at the lower part, and the midpoint calibrating caliper 1 is inserted into the midpoint calibrating caliper sliding sleeve 3 from top to bottom; the upper measuring claw 4 of the midpoint calibrating caliper is arranged on the side surface of the top end of the midpoint calibrating caliper 1, and the lower measuring claw 5 of the midpoint calibrating caliper is arranged on the side surface of the top end of the sliding sleeve 3 of the midpoint calibrating caliper. The wall of the middle point calibration caliper sliding sleeve 3 is provided with a hole and a middle point calibration caliper adjusting button 2, and the middle point calibration caliper adjusting button 2 is a horizontal bolt and can be pushed by a thumb to be freely adjusted in a sliding mode.
The sliding vernier caliper sleeve assembly comprises a sliding vernier caliper 8 on the upper portion and a sliding vernier caliper sliding sleeve 10 on the lower portion, the sliding vernier caliper 8 comprises a movable ruler 15 on the upper portion and a fixed sleeve 16 on the lower portion, the movable ruler 15 is inserted into the fixed sleeve 16 from top to bottom, the fixed sleeve 16 is inserted into the sliding vernier caliper sliding sleeve 10 from top to bottom, and the sliding vernier caliper 8 can integrally slide up and down in the sliding vernier caliper sliding sleeve 10. The upper measuring claw 11 of the sliding vernier caliper is arranged on the side surface of the top end of the movable ruler 15, and the lower measuring claw 12 of the sliding vernier caliper is arranged on the side surface of the top end of the fixed sleeve 16. The wall of the fixed sleeve 16 is provided with a hole and a sliding vernier caliper adjusting button 9, and the sliding vernier caliper adjusting button 9 is a horizontal bolt and can be pushed by a thumb to be freely adjusted in a sliding mode. The sliding vernier caliper 8 can adjust the measuring jaw by means of the sliding vernier caliper adjusting button 9, so that the distance from the center axis 7 to the rear body surface can be measured and read, and the nominal length of the film-printed ruler can be measured. The wall of the sliding sleeve 10 of the sliding vernier caliper is provided with a hole and a sliding vernier caliper sliding sleeve adjusting button 14, and the sliding vernier caliper sliding sleeve adjusting button 14 is a horizontal bolt and can be freely adjusted in a sliding manner by being pushed by a thumb. The bottom of the middle point calibration caliper sleeve assembly and the bottom of the sliding vernier caliper sleeve assembly on the right side are connected through a horizontal connecting beam 13, the middle point calibration caliper sleeve assembly and the bottom of the sliding vernier caliper sleeve assembly on the right side are both perpendicular to the connecting beam, and the connecting beam 13 is connected between the bottom of the middle point calibration caliper sliding sleeve 3 and the bottom of the sliding vernier caliper sliding sleeve 10 and perpendicular to the long axes of the calipers on the two sides, so that the long axes of the calipers on the two sides. The sliding vernier caliper 8 can be either a mechanical scale type or an electronic screen type.
When the device is used, the maximum section view of the kidney is selected, as shown in fig. 2, the left hand is used for adjusting the midpoint to calibrate the caliper adjusting button 2, so that the upper and lower measuring claws are aligned with the upper and lower limits of the kidney; meanwhile, the right-hand sliding vernier caliper 8 is held by the right hand, the lower measuring claw of the sliding vernier caliper 8 is aligned with the profile of the rear side of the body surface through the adjusting button 9 of the sliding vernier caliper, the upper measuring claw is aligned with the midpoint axis 7 of the midpoint calibration caliper 1, and the length reading a is read; finally, the ruler in the film is measured using a sliding vernier caliper 8, the length reading b is taken, and the measurement of the kidney depth is obtained by:
kidney depth = a x (nominal length of scale/b)
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (7)
1. A slide caliper rule that is arranged in kidney degree of depth precision measurement in tomogram, its characterized in that:
the vernier caliper comprises a middle point calibration caliper sleeve assembly on the left side and a sliding vernier caliper sleeve assembly on the right side, wherein the bottom ends of the middle point calibration caliper sleeve assembly and the sliding vernier caliper sleeve assembly are connected;
the upper part of the middle point calibration caliper sleeve component is provided with a horizontal middle point calibration caliper upper measurement claw (4) and a middle point calibration caliper lower measurement claw (5) which are parallel up and down, an upper middle point calibration connecting rod (6) and a lower middle point calibration connecting rod (6) which are equal in length are connected between the middle point calibration caliper upper measurement claw and the middle point calibration caliper lower measurement claw in a hinged mode, and the hinged position of the two middle point calibration connecting rods (6) is a middle point shaft (7;
the upper part of the sleeve component of the sliding vernier caliper is provided with an upper measuring claw (11) of the sliding vernier caliper and a lower measuring claw (12) of the sliding vernier caliper which are horizontal and parallel up and down.
2. A caliper for accurate measurement of kidney depth in tomographic images as set forth in claim 1, wherein:
the midpoint calibrating caliper sleeve component comprises a midpoint calibrating caliper (1) at the upper part and a midpoint calibrating caliper sliding sleeve (3) at the lower part, and the midpoint calibrating caliper (1) is inserted into the midpoint calibrating caliper sliding sleeve (3) from top to bottom;
the upper measuring claw (4) of the midpoint calibrating caliper is arranged on the side surface of the top end of the midpoint calibrating caliper (1), and the lower measuring claw (5) of the midpoint calibrating caliper is arranged on the side surface of the top end of the sliding sleeve (3) of the midpoint calibrating caliper.
3. A caliper for accurate measurement of kidney depth in tomographic images as set forth in claim 2, wherein:
the wall of the middle point calibration caliper sliding sleeve (3) is provided with a hole and a middle point calibration caliper adjusting button (2), and the middle point calibration caliper adjusting button (2) is a horizontal bolt.
4. A caliper for accurate measurement of kidney depth in tomographic images as set forth in claim 1, wherein:
the sliding vernier caliper sleeve assembly comprises a sliding vernier caliper (8) at the upper part and a sliding vernier caliper sliding sleeve (10) at the lower part, the sliding vernier caliper (8) comprises a movable ruler (15) at the upper part and a fixed sleeve (16) at the lower part, the movable ruler (15) is inserted into the fixed sleeve (16) from top to bottom, and the fixed sleeve (16) is inserted into the sliding vernier caliper sliding sleeve (10) from top to bottom;
the upper measuring claw (11) of the sliding vernier caliper is arranged on the side surface of the top end of the movable ruler (15), and the lower measuring claw (12) of the sliding vernier caliper is arranged on the side surface of the top end of the fixed sleeve (16).
5. A caliper for accurate measurement of kidney depth in tomographic images as claimed in claim 4, wherein:
the wall of the fixed sleeve (16) is provided with a hole and a sliding vernier caliper adjusting button (9), and the sliding vernier caliper adjusting button (9) is a horizontal bolt.
6. A caliper for accurate measurement of kidney depth in tomographic images as claimed in claim 4, wherein:
the wall of the sliding sleeve (10) of the sliding vernier caliper is provided with a hole and a sliding vernier caliper sliding sleeve adjusting button (14), and the sliding vernier caliper sliding sleeve adjusting button (14) is a horizontal bolt.
7. A caliper for accurate measurement of kidney depth in tomographic images as set forth in claim 1, wherein:
the bottom ends of the middle point calibration caliper sleeve assembly and the sliding vernier caliper sleeve assembly on the right side are connected through a horizontal connecting cross beam (13), and the middle point calibration caliper sleeve assembly and the sliding vernier caliper sleeve assembly on the right side are both perpendicular to the connecting cross beam.
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| CN201920326141.0U CN210301030U (en) | 2019-03-15 | 2019-03-15 | Caliper for accurately measuring kidney depth in tomography image |
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| CN201920326141.0U CN210301030U (en) | 2019-03-15 | 2019-03-15 | Caliper for accurately measuring kidney depth in tomography image |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750758A (en) * | 2020-06-30 | 2020-10-09 | 中国航发动力股份有限公司 | Method and device for detecting diameter and length size of conical surface and machining method |
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2019
- 2019-03-15 CN CN201920326141.0U patent/CN210301030U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750758A (en) * | 2020-06-30 | 2020-10-09 | 中国航发动力股份有限公司 | Method and device for detecting diameter and length size of conical surface and machining method |
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