CN102198007A

CN102198007A - Intracranial lesion computerized tomography (CT) body surface simple positioning method

Info

Publication number: CN102198007A
Application number: CN2010101351308A
Authority: CN
Inventors: 姬西团; 赵东升
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-28
Filing date: 2010-03-28
Publication date: 2011-09-28

Abstract

The invention discloses a simple method for performing quick and convenient body surface positioning of intracranial lesions before a neurosurgical operation. In the method, a canthomeatal line is selected as a base line in skull CT axial radiography, a CT film with the largest lesion range is selected, the distance between the intersection points of the projective point of a lesion on head skin and a central line and the head skin on the skull CT film is measured with a compasses and a ruler, and the actual distance (shown in a figure in the abstract) between the two points is worked out according to a measuring scale on the CT film; a central line (sagittal line) is marked on the head skin of the patient, a circular arc parallel to the base line is drawn on the head skin on the layer on which the measured CT film exists, and after the intersection point of the central line and the circular arc is determined, and the front and back boundaries of the lesion are marked on the circular arc with the compasses according to the length measured before; and the upper and lower boundaries of the lesion are marked in the same way. The boundaries define the projection of the lesion on the head skin. In addition, the method can be used for positioning intracranial lesions by using a skull magnetic resonance imaging (MRI) axis view, a sagittal view and a coronal view.

Description

The simple and easy positioning mode of intracranial lesion CT body surface

Technical field

The present invention relates to a kind of intracranial lesion body surface localization method.

Background technology

When carrying out craniocerebral operations, whether the intracranial lesion location is accurately very crucial for the success or failure of operation, has a far reaching influence for the rehabilitation of postoperative patient and the prevention of complication.Because most of brain lesion all is positioned at the intracranial deep, even be positioned at the small lesion of superficial place, with traditional modus operandi difficulty accomplish accurate location, thereby make the accurate excision of intracranial lesion bring certain difficulty.Also be difficult to identification even some intracranial lesion and surrouding brain tissue boundary are unclear at microscopically,, be difficult to look in might art and see if the art prelocalization is inaccurate.For the intracranial lesion localization method multiple report was arranged once, as utilize CT, MRI to scan laggard wardrobe leather mark note, and check CT or MRI then, utilize the geometry principle location, but this method can delay rescue time, increase medical expense, and it is bigger influenced by the head scrambling.In recent years, the neural airmanship, the horseley-Clarke technique that grow up in the neuroscience field, though can locate intracranial lesion more accurately, both equipment are all expensive, complex operation is not suitable in the basic hospital penetration and promotion.

Summary of the invention

In order to overcome the loaded down with trivial details disadvantage of traditional intracranial lesion localization method, reduce the expense of art prelocalization, the invention provides the method for the simple and easy labelling of a kind of intracranial lesion CT body surface, this method not only can accurately mark the scalp body surface projection scope of intracranial lesion, and it is convenient, fast, cheap, being adapted at all basic hospitals promotes

The technical solution adopted for the present invention to solve the technical problems is: select each one on ruler, compasses for use.Head CT axle position is taken the photograph sheet and is selected orbitomeatal line as baseline, selects a CT film of extent of disease maximum, the body surface projection point A of circle, the front and back point after measuring pathological changes on the film to avoid important structure and functional areas, C point.The center line that draws on the CT sheet marks center line and scalp intersection points B point, D point, measures distance between BA, the BC point with compasses, calculates 2 actual ranges (as shown in Figure 1) with the scale on the CT film.Mark center line (being sagittal line) earlier at patient's head, on the scalp of measured CT sheet place aspect, draw and be parallel to the circular arc line of baseline, the intersection point of this line and sagittal line still is B point, D point, measure and mark A point, C point with compasses, ruler on the Ipsilateral string camber line at diseased region place, the BA that marks, BC straight length are the length of measuring on the film and converting out with scale.A point, C point are border (as shown in Figure 2), pathological changes front and back.Using such method marks the pathological changes bound again.This border is the body surface projection of pathological changes at scalp.

This method has following advantage: 1. simple, convenient, and not influenced by the head scrambling, be applicable to all intracranial lesion location; 2. simple, the safety of instrument, cheap, be easy to get, can promote at all basic hospitals; 3. locate, save cost, desmopyknosis prelocalization time fast, only need once take the photograph sheet, can strive for more rescue times, and human body is not had injury; 4. accurate positioning can be located extent of disease, size, avoids critical function district and big blood vessel and venous sinus etc., reduces tissue injury, helps prognosis and recovers.

For guaranteeing localized accuracy, requirement CT scan baseline must be clear and definite, otherwise, the doctor should judge the accurate position of timebase according to the shown significant structure (as eyeball, zygomatic arch, porus acusticus externus etc.) that goes out of first CT axial scan aspect, so can overcome the position error that causes because of timebase is lack of standardization.

Description of drawings

Below in conjunction with accompanying drawing and implementation method this utility model is further specified.

Accompanying drawing is the sketch map of the design according to the present invention

Fig. 1 is a head CT axle position striograph.

Fig. 2 is an intracranial lesion body surface labelling sketch map.

1. compasses among the figure, 2. head CT axle position striograph, 3. intracranial lesion position, 4. scale, 5. parallel circular arc line, 6. orbitomeatal line with orbitomeatal line.

The specific embodiment

Among the figure, on the CT axle bitmap (2) of the maximum aspect of extent of disease, mark intersection points B, the D of center line and scalp earlier, mark the body surface projection point A of circle, front and back point, C point after diseased region (3) is avoided important structure and functional areas again, measure BA air line distance, BC air line distance respectively with compasses (1), calculate their actual range with scale (4).

Head CT axle position is taken the photograph sheet and is selected orbitomeatal line (6) as baseline, marks the circular arc line (5) that is parallel to baseline (6), the center line that draws (being sagittal line) BD at CT axle bitmap (2) the place scalp body surface of the maximum aspect of extent of disease on scalp.BA, the BC distance of coming out with measuring and calculating marks A point, C point on the circular arc line (5) of pathological changes place one side.These 2 projections that are circle, intracranial lesion front and back at body surface.Using such method can mark the pathological changes bound again.

In addition, utilize head MRI axle position, sagittal plain, crown position to carry out same this method that is suitable in intracranial lesion location.

Claims

1. intracranial lesion body surface localization method, take the photograph Cranial Computed Tomography axle bit slice before the art, select orbitomeatal line as baseline when taking the photograph sheet, select a CT film of extent of disease maximum, utilize compasses, ruler by measuring the distance of pathological changes between the subpoint on the scalp and center line and scalp intersection point on the head CT axle bit slice, calculate actual range (shown in Figure of abstract) between each point with the scale on the CT film.Mark center line (being sagittal line) earlier at patient's scalp then, on the scalp of measured CT sheet place aspect, draw and be parallel to the circular arc line of baseline, after center line and circular arc line intersection point are determined, on circular arc line, mark the prezone and the Hou Jie of pathological changes with measured lengths before the compasses basis.Using such method marks the pathological changes bound again.