1. A process for improving a radiological examination of an area of a body (1c), this examination being conducted using a radiological device (1) , this process being characterised in that, prior to the radiological examination, a two-dimensional radioscopic image is taken, with a single energy for the X-rays used, of the area of the body to be examined and this image is used to determine first characteristic points which define a measurement reference system, and geometric parameters of a movement able to make this measurement reference system correspond approximately with a reference system pre-set from equivalent characteristic points corresponding to the first characteristic points, or this image is used to control the X-Ray dose to be transmitted to the body during the radiological examination.
2. A process according to claim 1, wherein the radiological examination is an osteodensitometry examination.
3. A process according to any one of claims 1 and 2, wherein the radiological examination is a first radiological examination and the pre-set reference system is a theoretical reference system, adapted to the body being examined.
4. A process according to any one of claims 1 and 2, wherein the radiological examination follows a previous radiological examination, conducted using the same radiological device (1), and the pre-set reference system is a reference system, which is defined on a previous image from the equivalent characteristic points.
5. A process according to any one of claims 1 to 4, wherein the X-ray dose to be transmitted to the body (1c) is controlled during the radiological examination, by adapting the operating point of the radiological device (1) to the morphology of the body being examined.
6. A process according to any one of claims 1 to 4, wherein the X-ray dose to be transmitted to the body (1c) is controlled during the radiological examination, by setting the area to be irradiated by X-rays during the examination to the morphology of the body to be examined.
7. A radiological device for implementing the process according to claim 1, this device (1) including:
an X-ray source (1a), able to supply an X-ray cone beam with at least one energy,
means (1e) of varying the X-ray dose able to be received by the body to be examined,
a two-dimensional X-ray detector (2), which is arranged parallel to a plane defined by two orthogonal directions (x, y) and which is perpendicular to the axis of the X-ray beam,
means (2a) of supporting the body to be examined, these support means being transparent to the X-rays emitted by the source, arranged between the source and the detector and able to withstand a relative movement in relation to the unit formed by the source and the detector, along the two orthogonal directions,
means of determining first characteristic points on a two-dimensional radioscopic image, these first points defining a measurement reference system, and
calculation means, provided to determine the geometric parameters of a movement able to make this measurement system correspond approximately with a reference system pre-set from equivalent characteristic points corresponding to the first characteristic points.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A resuscitator for providing ventilation gas for a patient, said resuscitator comprising:
a patient outlet for supplying said gas to the patient; an exhaust outlet for supplying exhaled gas from the patient to atmosphere; and a diverter fitted on said exhaust outlet, said diverter including a diverter member inclined at an angle to an axis of said exhaust outlet, and an opening towards an end of said diverter member such that exhaled gas flowing through said exhaust outlet flows along an inner surface of said diverter member and out of said opening, wherein said diverter includes a color-change carbon dioxide indicator mounted on an inner surface of said diverter member where it is exposed to flow through said diverter, and wherein said indicator is visible externally of said diverter.
2. A resuscitator according to claim 1, wherein said diverter is adjustable in orientation relative to said exhaust outlet.
3. A resuscitator according to claim 1, wherein said diverter is removable from said exhaust outlet.
4. A resuscitator according to claim 1, wherein the diverter is a push fit on the exhaust outlet.
5. A resuscitator according to claim 1, wherein said diverter member is of a transparent material.
6. A resuscitator according to claim 1 including a removable opaque protector for protecting the indicator from light.
7. A resuscitator according to claim 6, wherein said opaque protector includes a removable strip of opaque material covering an exposed surface of said indicator internally of said deflector.
8. A resuscitator according to claim 7, wherein said removable strip has an end projecting beyond said opening of said diverter and is arranged so that it can be removed by pulling on said end.
9. A resuscitator according to claim 6, wherein said opaque protector includes a strip of opaque material removably attached with and extending over an external surface of said diverter member.
10. A resuscitator according to claim 9, wherein said external strip is of an elastomeric material and is attached with said diverter by engaging formations on said strip and said diverter.
11. A resuscitator according to claim 1 including a squeeze bag of resilient material.
12. A resuscitator according to claim 1 including a valve assembly having an outer housing, a flexible diaphragm and a tubular member extending within said outer housing and communicating with said patient outlet at one end, said tubular member engaging said flexible diaphragm member at its other end by means of which flow of gas to said patient outlet and to said exhaust outlet is controlled, wherein said tubular member is rotatable relative to said outer housing, and wherein said tubular member is provided with a plurality of formations around its circumference arranged to allow a small amount of ventilation gas for supply to the patient via said tubular member to flow directly to said diverter regardless of the orientation of said tubular member.
13. A diverter for fitting on an exhaust outlet of a resuscitator, said diverter comprising a tubular portion shaped to fit on said exhaust outlet; a diverter member inclined at an angle to said tubular portion; an opening towards an end of said diverter member such that exhaled gas flowing through said exhaust outlet flows along an inner surface of said diverter member and out of said opening; and a color-change carbon dioxide indicator mounted on an inner surface of said diverter member where it is exposed to flow through said diverter, and wherein said indicator is visible externally of said diverter.
14. A diverter according to claim 13, wherein said diverter member is of a transparent material and said indicator is visible externally through said diverter member.
15. A diverter according to claim 13 including a removable opaque protector for protecting the indicator from light.
16. A diverter according to claim 15, wherein said opaque protector includes a removable strip of opaque material covering an exposed surface of said indicator internally of said deflector.
17. A diverter according to claim 16, wherein said removable strip has an end projecting beyond said opening of said diverter and is arranged so that it can be removed by pulling on said end.
18. A diverter according to claim 15, wherein said opaque protector includes a strip of opaque material removably attached with and extending over an external surface of said diverter member.
19. A diverter according to claim 18, wherein said external strip is of an elastomeric material and is attached with said diverter by engaging formations on said strip and said diverter.
20. An assembly of an endotracheal tube and a resuscitator for providing ventilation gas for a patient via said tube, said resuscitator comprising: a patient outlet connected with said endotracheal tube; an exhaust outlet for supplying exhaled gas from said tube to atmosphere; and a diverter fitted on said exhaust outlet, said diverter including a diverter member inclined at an angle to an axis of said exhaust outlet, an opening towards an end of said diverter member such that exhaled gas flowing through said exhaust outlet flows along an inner surface of said diverter member and out of said opening, wherein said diverter includes a color-change carbon dioxide indicator mounted on an inner surface of said diverter member where it is exposed to flow through said diverter, and wherein said indicator is visible externally of said diverter.