Radiation protection screens that provide radiation protection for operators against ionizing radiation

Abstract

The present invention relates to a radiation shielding screen (1) for providing radiation protection for an operator against ionizing radiation, the radiation protection screen (1) being equipped with a first dosimetry means (6) for measuring the external radiation dose (Re) received on the side of the outer surface (26), a second dosimetry means (7) for measuring the internal radiation dose (Ri) received on the side of the inner surface (25), an electronic display means (8) for displaying information intended for an operator, and a control means (9) coupled to the dosimetry means (6, 7) and to the electronic display means (8) for displaying information related to at least the measured internal radiation dose (Ri) / external radiation dose (Re) on the electronic display means (8).

Description

[Technical Field]

[0001] The present invention relates to the technical field of devices for protection against ionizing radiation.

[0002] More particularly, the present invention relates to radiation protection shields, enclosures and screens adapted to ensure radiation protection of operators against ionizing radiation, which are advantageous in the medical field and the like. [Background technology]

[0003] Depending on the location, operators must be able to protect themselves against exposure to ionizing radiation, such as X-rays or gamma rays.

[0004] This is particularly the case for staff during several interventions in the medical field, ie for example catheterization examinations, pacemaker implantations, vascular, neurological or urological examinations.

[0005] Therefore, operators (technologists, doctors, surgeons, etc.) use structures to protect against the radiation to which the patient is exposed.

[0006] Among the existing protective structures, radiation protection screens consist of panels or assemblies of panels made from radiation protection materials to ensure radiation protection of the operator. Summary of the Invention [Problem to be solved by the invention]

[0007] In practice, however, operators often lack concrete, objective and reliable data regarding the radiation protection efficiency of the screens behind which they act.

[0008] However, current radiation protection screens have varying and uneven qualities in terms of radiation protection efficiency.

[0009] There is therefore a need for a technical solution that can inform the operator objectively and during the intervention about the efficiency of protection provided by the radiation protection screens used by the operator. [Means for solving the problem]

[0010] The present invention therefore proposes a radiation protection screen adapted to ensure radiation protection of the operator against ionizing radiation, in order to remedy the above-mentioned drawbacks of the state of the art.

[0011] The screen comprises a radiation protection wall made of a radiation protection material, which has two opposite faces, namely: an inner surface against which the operator is intended to position himself; an outer surface against which the source of ionizing radiation must be placed; It has.

[0012] According to the present invention, the radiation protection screen comprises: - first dosimetry means embedded opposite said outer surface and adapted to measure the external radiation dose received on the side of said outer surface; - second dosimetry means embedded opposite said inner surface and adapted to measure the internal radiation dose received at the side of said inner surface; - electronic display means adapted to display information for the operator; control means coupled to said dosimetry means and said electronic display means; is provided.

[0013] The control means includes a control module designed to display information relating to at least said measured internal / external radiation dose on said electronic display means.

[0014] In fact, it allows the operator to obtain specific, objective and reliable information / data regarding the radiation protection properties of the screen behind which he intervenes.

[0015] This technical solution allows the operator to know objectively and directly the protection efficiency provided by the radiation protection screen he uses during the intervention.

[0016] Other non-limiting and advantageous characteristics of the product according to the invention, taken individually or according to all technically possible combinations, are: the control module is designed to display on said electronic display means information selected from at least an internal radiation dose value, an external radiation dose value, a differential radiation dose value (corresponding to the difference between said external radiation dose and said internal radiation dose), and an attenuation value (corresponding to the ratio between said external radiation dose and said internal radiation dose), said values ​​advantageously being real-time values ​​(also referred to as "instantaneous values") and / or values ​​over a period of time (also referred to as "cumulative values"), said values ​​advantageously being expressed in equivalent doses; the first dosimetry means is carried by an outer surface of the radiation protection wall and the second dosimetry means is carried by an inner surface of the radiation protection wall; the electronic display means is carried by an inner surface of the radiation protective wall and is positioned so as to be visually accessible to an operator standing in front of said inner surface; - the control means are coupled to said dosimetry means and / or to said electronic display means by wired or wireless connection means, the radiation protection screen comprises means for removably fixing the first dosimetry means facing the outer surface of the radiation protection wall and / or the second dosimetry means facing the inner surface of the radiation protection wall and / or electronic display means facing the inner surface of the radiation protection wall, the first dosimetry means and / or the second dosimetry means and / or the electronic display means are each housed in a case that is removably fixed to the metal wall of the screen by magnetization; the first dosimetry means and / or the second dosimetry means and / or the electronic display means are each housed in a case that is removably fixed by being inserted into a support housing that is fixed to the screen; the first dosimetry means and / or the second dosimetry means and / or the electronic display means are powered by a battery carried by the screen, the first dosimetry means and / or the second dosimetry means and / or the electronic display means are each housed in a case incorporating a battery for their power supply, said case comprising a suitable connection system for charging said batteries from a power source; the screen comprises a radiation protection wall with a front panel extended by at least one side panel, the front panel and the side panels extending over a height greater than the height of an operator in a standing position, the first and second dosimetry means being fixed to the side panels in areas opposite the operator's head, and the electronic display means being fixed to the front panel; the control means includes an output for coupling to a remote computer; the control means comprises a memory module designed to record information relating to the measured internal / external radiation doses, The electronic display and control means consist of an integrated electronic device.

[0017] The invention also relates to a dosimetry device for a radiation protection screen adapted to ensure radiation protection of an operator against ionizing radiation, said screen comprising a radiation protection wall made of a radiation protection material, said radiation protection wall having two opposite faces: an inner face opposite to which an operator must stand and an outer face opposite to which a source of ionizing radiation must be placed.

[0018] The dosimetry system - first dosimetry means intended to be embedded opposite said outer surface and adapted to measure the external radiation dose received on the side of said outer surface; - second dosimetry means intended to be embedded opposite said internal surface and adapted to measure the internal radiation dose received on the side of said internal surface; - electronic display means adapted to display information for the operator; control means coupled to said dosimetry means and said electronic display means; Equipped with The control means includes a control module designed to display information relating to at least the measured internal / external radiation dose on the electronic display means.

[0019] Obviously, the different features, alternatives and embodiments of the invention can be associated with one another according to various combinations, provided they are not mutually exclusive and inconsistent with respect to one another.

[0020] Detailed Description of the Invention Furthermore, various other features of the present invention will become apparent from the accompanying description, which is made with reference to the drawings illustrating non-limiting embodiments of the invention. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic perspective view of a radiation protection screen according to the invention, equipped with a dosimetry system designed in particular to measure internal / external radiation doses; FIG. [Figure 2] 2 is a schematic side view of the radiation protection screen according to FIG. 1, also showing the arrangement of the dosimetry system; [Figure 3] 1 is a schematic perspective view of an alternative embodiment of a radiation protection screen according to the present invention; [Figure 4] FIG. 4 is a front view of the radiation protection screen shown in FIG. 3, facing the inner surface of its front panel. [Figure 5] FIG. 4 is a front view of the radiation protection screen shown in FIG. 3, facing the inner surface of its side panel. [Figure 6] FIG. 6 is a cross-sectional view of the radiation protection screen according to section 6-6 of FIG. 5. [Figure 7]1 shows one possible example of information that may be provided by the electronic display means of a radiation protection screen according to the invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] It should be noted that in these figures, structural and / or functional elements that are common to different alternatives may have the same reference numerals.

[0023] The radiation protection screen 1 (also called "screen 1") shown in Figures 1 and 2 is adapted to ensure radiation protection of an operator against ionizing radiation (for example X-rays or gamma rays).

[0024] Such a radiation protection screen 1 is advantageously used in the medical field during several interventions on patients, ie for example catheterization type examinations, pacemaker implantation, vascular, neurological or urological examinations.

[0025] The screen 1 is here in the form of a mobile cabin provided with castors 1a for supporting it on the ground, to facilitate its movement.

[0026] The operator (technologist, doctor, surgeon, etc.) must stand behind this radiation protection screen 1 so that he is protected against the radiation to which the patient is exposed.

[0027] For that purpose, the screen 1 comprises a radiation protection wall 2 made from a radiation protection material.

[0028] This radiation protection material is conventional per se and is chosen, for example, from among lead, steel, plastic material filled with radiation protection metal particles, or glass filled with radiation protection metal particles.

[0029] The radiation protection wall 2 is made up of a panel or assembly of panels that extends generally vertically or at least approximately vertically over a height greater than the height of an operator in a standing position.

[0030] This radiation protection wall 2 advantageously comprises a front panel 21, which is optionally extended by at least one side panel 22 (here, two side panels 22 each extending one of the sides of the front panel 21).

[0031] This radiation protection wall 2 has two opposite faces, namely: an inner surface 25 (visible in FIG. 2) against which the operator must stand; an outer surface 26, against which a source of ionizing radiation must be placed; It has.

[0032] The screen 1 is therefore intended to reduce or even eliminate the passage of ionizing radiation through the radiation protection wall 2. In other words, the screen 1 makes it possible to reduce or even eliminate the radiation dose from the outer surface 26 to the inner surface 25 of the radiation protection wall 2.

[0033] According to the invention, this screen 1 is equipped with functional means to provide the operator with concrete, objective and reliable data / information regarding radiation protection effectiveness.

[0034] These functional means are advantageously in the form of a dosimetry system 5 comprising a combination of electronic components.

[0035] The radiation protection screen 1 is equipped via a dosimetry system 5 with several dosimetry means, namely: - first dosimetry means 6 adapted to measure the external radiation dose Re received (or "measured") on the side of said external surface 26; - second dosimetry means 7 adapted to measure the internal radiation dose Ri received (or "measured") at the side of said internal surface 25; is provided.

[0036] In other words, the first dosimetry means 6 is intended to be interposed between the ionizing radiation source and the screen 1 so as to measure the external radiation dose Re received on the outer surface 26, and the second dosimetry means 7 is intended to be positioned opposite the inner surface 25 so as to measure the radiation dose Ri that may pass through the screen 1.

[0037] By "radiation dose" is advantageously understood the amount of energy transferred to the environment by ionizing radiation, which is advantageously expressed in μSv or mSv or Gy (gray).

[0038] More precisely, the term "radiation dose" preferably encompasses absorbed dose, equivalent dose, effective dose, radioactive dose rate or equivalent dose rate.

[0039] Absorbed dose is the amount of energy absorbed at a given point per unit mass of material (inert or living). It is expressed in grays (Gy) or J / kg.

[0040] The equivalent dose is the product of the dose absorbed in a tissue or organ and a weighting factor that takes into account the biological effects related to the nature and energy of the radiation. It is expressed in sieverts (Sv).

[0041] The effective dose, also expressed in sieverts, corresponds to the sum of the weighted equivalent doses delivered to the different tissues and organs of the body by internal and external exposure.

[0042] The radioactive dose rate determines the radiation intensity (energy absorbed by a substance per unit mass and unit time), which is measured in grays per second (Gy / s).

[0043] The dose equivalent rate corresponds to the fraction of the absorbed dose weighted to the biological effect by a radiation-dependent quality factor. It is expressed in sieverts per second (Sv / s).

[0044] Here, the first dosimetry means 6 are embedded facing the outer surface 26. These first measurement means 6 are also preferably carried by this outer surface 26 of the radiation protection wall 2.

[0045] The second dosimetry means 7 are embedded facing the inner surface 25. Preferably, these second dosimetry means 7 are carried by the inner surface 25 of the radiation protection wall 2.

[0046] Preferably, these first dosimetry means 6 and / or second dosimetry means 7 are each integrated into a supporting case which is removably fixed to or removably carried by the screen 1. The corresponding case can be fixed, for example, by magnetization, to a metal part of the frame of the screen 1; alternatively, the corresponding case may be placed in a suitable receiving housing / container which is itself removably fixed to the screen 1.

[0047] The first dosimetry means 6 and the second dosimetry means 7 are advantageously embedded at a height of 1,500 to 1,900 mm, preferably 1,600 to 1,800 mm, relative to the ground (advantageously at a height corresponding to the height of the operator's head, in particular the eyes or temporal lobes, located on the radiation source side).

[0048] The first dose measurement means 6 and the second dose measurement means 7 may be arranged opposite (i.e. facing) each other with the radiation protection wall 2 sandwiched between them, or alternatively, the first dose measurement means 6 and the second dose measurement means 7 may be arranged alternately with each other.

[0049] These first dosimetry means 6 and second dosimetry means 7 can be embedded in one of the sides of the front panel 21 (as shown in Figures 1 and 2) or in one of the side panels 22 (in particular in the side panel intended to be located on the radiation source side).

[0050] To measure such radiation doses, the dosimetry means 6, 7 advantageously consist of at least two individual electronic devices, each adapted to measure / determine the external exposure to ionizing radiation of the dose received for the whole body.

[0051] Such dosimetry means 6, 7 are advantageously selected from among themselves conventional dosimeters, preferably electronic dosimeters.

[0052] These dosimeters preferably consist of armed or active dosimeters that are capable of measuring / collecting received radiation dose in real time.

[0053] The dosimeter may be of the Geiger-Muller radiation counter type.

[0054] The supporting case of the first and second dosimetry means 6, 7 advantageously incorporates a battery to ensure energy autonomy, and the case is provided with a suitable connection system for charging the battery from a power source, this charging operation being facilitated by a detachable attachment of the case to the screen 1.

[0055] For these embodiments of the dosimetry means 6, 7, as shown in FIG. 2, the radiation protection screen 1 has: - electronic display means 8 adapted to display information / data for the operator; - control means 9 coupled to the dosimetry means 6, 7 (to process the collected data) and to the electronic display means 8 (to control the information provided to the operator); is also provided.

[0056] The electronic display means 8 and the control means 9 are advantageously housed in the same supporting case, which advantageously incorporates a battery, to ensure energy autonomy.

[0057] Again, the corresponding case is provided with a suitable connection system for charging the battery from a power source.

[0058] According to an alternative embodiment, the screen 1 may be equipped with a rechargeable battery suitable for powering the dosimetry means 6, 7, the electronic display means 8 and the control means 9 by means of a wired network.

[0059] Preferably, the electronic display means 8, possibly together with the control means 9, are carried by the inner surface 25 of the radiation protection wall 2. Their supporting case can be removably carried by the screen 1 by magnetization or by being incorporated into a supporting housing / container, such removably attaching the case to the screen 1 facilitating the charging operation of the built-in battery.

[0060] They are further arranged so as to be visually accessible to an operator positioned in front of this inner surface 25 during an intervention.

[0061] Such electronic display means 8 is advantageously in the form of a peripheral output device, for example a display screen (or monitor).

[0062] The control means 9 advantageously consist of a calculation / electronic unit, for example a computer, which: a processing unit, also called a "computing unit" or "processor"; - data storage means comprising a database and at least one computer program; Equipped with.

[0063] The connection of the control means 9 with the dosimetry means 6, 7 on the one hand and the electronic display means 8 on the other hand is preferably implemented using wireless connection means (Wifi, Bluetooth, ZigBee, etc.) not shown, alternatively this connection may be a wired connection.

[0064] According to a preferred embodiment, the electronic display means 8 and the control means 9 consist of an integrated electronic device (common case), for example of tablet type, possibly a touch tablet.

[0065] In the case of wireless connection means, the dosimetry means 6, 7 are advantageously each equipped with a wireless transceiver communication module.

[0066] The control means 9 comprises a control module 91 designed to display on the electronic display means 8 information / data relating to at least the measured internal radiation dose Ri / external radiation dose Re.

[0067] Such control module 91 is preferably selected from among computer programs comprising instructions which, when the program is executed by a computer, cause said computer to display on the electronic display means 8 at least information / data relating to the measured internal radiation dose Ri / external radiation dose Re.

[0068] The term "information / data relating to at least the measured internal radiation dose Ri / external radiation dose Re" advantageously means: the measured internal radiation dose Ri / external radiation dose Re values ​​themselves, displayed directly after each measurement, and / or - the value derived from these measured internal radiation doses Ri / external radiation doses Re obtained from processing by this same control module 91 Includes.

[0069] Preferably, the control module 91 includes at least the value Ri of the internal radiation dose collected by the second dosimetry means 7 (embedded opposite said internal surface 25); the value Re of the external radiation dose collected by the first dosimetry means 6 (embedded opposite said external surface 26), and a differential radiation dose value corresponding to the difference between the external radiation dose Re and the internal radiation dose Ri; the attenuation coefficient value of screen 1, an attenuation value corresponding to the ratio between said external radiation dose (Re) and said internal radiation dose (Ri), advantageously expressed as a percentage of said external radiation dose (Re); The electronic display means 8 is designed to display information selected from the above.

[0070] The value displayed on the electronic display means 8 is advantageously: - real-time or instantaneous values ​​("real-time" mode), and / or - Values ​​over a period of time, e.g. over the time of an examination or intervention, i.e. cumulative values, which are of particular interest in dose monitoring ("monitoring" mode) Includes.

[0071] The accumulated value can be personalized for a given user through user recognition means (such as a badge).

[0072] These displayed values ​​are advantageously expressed in equivalent doses.

[0073] The control means 9 comprises a memory module 92 designed to record information / data relating to the measured internal / external radiation doses Ri / Re.

[0074] Such memory module 92 is preferably selected from among computer programs containing instructions which, when executed by a computer, cause said computer to record information / data relating to at least the measured internal radiation dose Ri / external radiation dose Re in a data storage means.

[0075] The control means 9 may also be provided with an output (not shown), for example in the form of a computer bus (for example a USB port) for connecting computer peripheral devices.

[0076] This coupling of the control means 9, wired or wireless, is advantageously carried out in a remote computer, for example in the form of a server.

[0077] This output is useful for exchanging data with a remote computer for dosimetric monitoring, in particular information relating to the measured internal radiation dose Ri / external radiation dose Re.

[0078] Generally, the radiation protection screen 1 is either initially equipped with a dosimetry system 5 or is added later.

[0079] In the "add-on" configuration, the dosimetry system 5 advantageously consists of an "autonomous" device adapted to be added to an existing radiation protection screen 1 for retrofitting / updating said radiation protection screen 1.

[0080] More generally, the different components of the dosimetry system 5 are carried by the radiation protection screen 1 via assembly means (possibly via dedicated support elements).

[0081] In operation, the radiation protection screen 1 is interposed between the operator and the source of ionizing radiation.

[0082] The operator is then positioned behind the screen 1, facing its inner surface 25.

[0083] During the intervention, the dosimetry system 5 collects the internal radiation dose Ri / external radiation dose Re.

[0084] The dosimetry system 5 also ensures, by means of control means 9, the processing of the collected data and provides, via electronic display means 8, data relating to at least the internal radiation dose Ri / external radiation dose Re.

[0085] Thus, the operator can visualize specific, objective and reliable data regarding the radiation protection efficiency of the radiation protection screen 1 throughout the intervention in "real time" mode and / or in "monitoring" mode.

[0086] 3 to 6 show an alternative embodiment of a screen 1 according to the invention as a mobile cabin mounted on casters 1a.

[0087] Again, this screen 1 comprises a radiation protection wall 2 made from a radiation protection material.

[0088] This radiation protection material is conventional per se and is chosen, for example, from among lead, steel, plastic material filled with radiation protection metal particles, or glass filled with radiation protection metal particles.

[0089] The radiation protection wall 2 is made up of panels and assemblies of panels that extend generally vertically or at least approximately vertically over a height greater than the height of an operator in a standing position.

[0090] The radiation protection wall 2 here comprises a front panel 21, which is extended on one of its sides by a side panel 22. The front panel 21 comprises: a lower part 211 fixed to the side panel 22 and extending at an angle of approximately 90° relative to the side panel 22; a movable upper part 212 pivotably mounted about a vertical axis opposite the side panel 22; Equipped with.

[0091] The radiation protection wall 2 formed from the front panel 21 and the side panel 22 has two opposite faces, i.e. an inner surface 25 facing which the operator must stand; an outer surface 26, against which a source of ionizing radiation must be placed; It has.

[0092] With respect to the embodiment shown in FIGS. 1 and 2, the screen 1 shown in FIGS. 3 to 6 is - first dosimetry means 6 adapted to measure the external radiation dose Re received (also called "measured") on the side of the external surface 26; - second dosimetry means 7 adapted to measure the internal radiation dose Ri received (also called "measured") on the side of the inner surface 25; - electronic display means 8 adapted to display information / data for the operator; - control means 9 coupled to the dosimetry means 6, 7 (to process the collected data) and to the electronic display means 8 (to control the information provided to the operator); Equipped with.

[0093] The first dose measuring means 6 and the second dose measuring means 7 are here arranged opposite each other (i.e., facing each other) in the upper part of the side panel 22, in an area located near the operator's head, more particularly in an area facing the operator's temporal lobe located on the radiation source side.

[0094] Preferably, these first dosimetry means 6 and second dosimetry means 7 are each integrated into a supporting case which is removably fixed to or carried by the screen 1. The corresponding case can be fixed, for example, by magnetization, to a metal part of the screen frame; alternatively, the corresponding case may be placed in a suitable receiving housing / container which is itself removably fixed to the screen 1.

[0095] The supporting case of the first and second dosimetry means 6, 7 advantageously incorporates a battery to ensure energy autonomy, and the case is provided with a suitable connection system for charging the battery from a power source, which is facilitated by a removably mounting of the case on the screen 1 (so that the case can be removed from the screen for connection to a suitable battery charger).

[0096] The electronic display means 8 and the control means 9 are housed in the same support case fixed to the inner surface 25 of the screen 1 in the upper part of the front panel 21 .

[0097] This support case is advantageously carried removably by the screen 1 by magnetization or by being incorporated into a support housing.

[0098] To ensure energy autonomy, the supporting case advantageously incorporates a battery and is provided with a suitable connection system for charging said battery from a power source, this charging operation being facilitated by the detachable attachment of the case to the screen 1.

[0099] Control of the electronic display means 8 by the control means 9 based on the information received from the dosimetry means 6, 7 is performed as described above in connection with the embodiment of FIGS.

[0100] FIG. 7 shows one possible example of information that may be provided by the electronic display means 8.

[0101] Here, the external radiation dose Re detected by the first dose measurement means 6 is displayed on the left side of the screen, and the internal radiation dose Ri detected by the second dose measurement means 7 is displayed on the right side of the screen, and the radiation attenuation value is displayed in the center.

[0102] The screen may also display other information, for example regarding the battery charge of the dosimetry means 6 and 7 and the correct operation of the wireless connections.

Claims

1. adapted to ensure radiation protection of the operator against ionizing radiation, Radiation protection wall made from radiation protection materials (2) Equipped with The radiation protection wall has two opposite faces, namely: an inner surface (25) against which the operator is intended to position himself; an outer surface (26) against which a source of ionizing radiation must be placed; A radiation protection screen having The radiation protection screen (1) - first dosimetry means (6) embedded opposite said external surface (26) and adapted to measure the external radiation dose (Re) received on the side of said external surface (26); - second dosimetry means (7) embedded opposite said internal surface (25) and adapted to measure the internal radiation dose (Ri) received on the side of said internal surface (25); - electronic display means (8) adapted to display information for said operator; - control means (9) coupled to said first dosimetry means (6), said second dosimetry means (7) and said electronic display means (8); is provided, 1. A radiation protection screen, characterized in that the control means (9) comprises a control module (91) designed to display information related to at least the measured internal radiation dose (Ri) and the measured external radiation dose (Re) on the electronic display means (8).

2. The control module (91) comprises at least the value of the internal radiation dose (Ri); the value of the external radiation dose (Re), a differential radiation dose value corresponding to the difference between the external radiation dose (Re) and the internal radiation dose (Ri); an attenuation value corresponding to the ratio between the external radiation dose (Re) and the internal radiation dose (Ri); 2. A radiation protection screen according to claim 1, characterized in that it is designed to display on the electronic display means (8) information selected from the following:

3. 3. A radiation protection screen according to claim 1 or 2, characterized in that the first dosimetry means (6) are carried by the outer surface (26) of the radiation protection wall (2) and the second dosimetry means (7) are carried by the inner surface (25) of the radiation protection wall (2).

4. 4. The radiation protection screen according to claim 1, wherein the electronic display means (8) is carried by the inner surface (25) of the radiation protection wall (2) and is arranged so as to be visually accessible to the operator standing in front of the inner surface (25).

5. 5. A radiation protection screen according to any one of claims 1 to 4, characterized in that the control means (9) is coupled to the first dosimetry means (6), the second dosimetry means (7) and the electronic display means (8) by wired or wireless connection means.

6. the first dosimetry means (6) facing the outer surface (26) of the radiation protection wall (2), and / or the second dosimetry means (7) facing the inner surface (25) of the radiation protection wall (2), and / or - said electronic display means (8) facing said inner surface (25) of said radiation protection wall (2); 6. A radiation protection screen according to claim 1, further comprising means for removably fastening the radiation protection screen to the radiation protection screen.

7. 7. A radiation protection screen according to claim 6, characterized in that the first dosimetry means (6), and / or the second dosimetry means (7), and / or the electronic display means (8) are each housed in a case that is removably fixed to a metal wall of the radiation protection screen (1) by magnetization.

8. 7. A radiation protection screen according to claim 6, characterized in that the first dosimetry means (6), and / or the second dosimetry means (7), and / or the electronic display means (8) are each housed in a case that is removably fixed by being inserted into a support housing fixed to the radiation protection screen (1).

9. 9. A radiation protection screen according to any one of claims 1 to 8, characterized in that the first dosimetry means (6), the second dosimetry means (7) and the electronic display means (8) are supplied with power by a battery carried by the radiation protection screen (1).

10. 10. A radiation protection screen according to claim 9, characterized in that the first dosimetry means (6), the second dosimetry means (7) and the electronic display means (8) are each housed in a case incorporating a battery for their power supply, said case comprising a suitable connection system for recharging said batteries from a power source.

11. a radiation protection wall (2) having a front panel (21) extended by at least one side panel (22), the front panel (21) and the side panel (22) extending over a height greater than the height of the operator in a standing position; the first dosimetry means (6) and the second dosimetry means (7) are fixed to the side panel (22) in an area opposite to the operator's head; Radiation protection screen according to any one of claims 1 to 10, characterized in that the electronic display means (8) are fixed to the front panel (21).

12. A radiation protection screen according to any one of claims 1 to 11, characterised in that the control means (9) comprises an output for coupling to a remote computer.

13. 13. A radiation protection screen according to any one of claims 1 to 12, characterized in that the control means (9) comprises a memory module (92) designed to record information relating to the measured internal radiation dose (Ri) / external radiation dose (Re).

14. Radiation protection screen according to any one of the preceding claims, characterized in that the electronic display means (8) and the control means (9) consist of an integrated electronic device.

15. A dosimetry system for a radiation protection screen (1) that provides radiation protection for an operator against ionizing radiation, comprising: The radiation protection screen comprises a radiation protection wall (2) made of a radiation protection material, the radiation protection wall (2) having two opposite sides, namely an inner side (25) opposite to which an operator must stand and an outer side (26) opposite to which an ionizing radiation source must be placed, The dosimetry system (5) - first dosimetry means (6) intended to be embedded opposite said external surface (26) and adapted to measure the external radiation dose (Re) received on the side of said external surface (26); - second dosimetry means (7) intended to be embedded opposite said internal surface (25) and adapted to measure the internal radiation dose (Ri) received on the side of said internal surface (25); - electronic display means (8) adapted to display information for said operator; - control means (9) coupled to said first dosimetry means (6), said second dosimetry means (7) and said electronic display means (8); Equipped with 1. A dosimetry system, wherein the control means (9) comprises a control module (91) designed to display information relating to at least the measured internal radiation dose (Ri) and the measured external radiation dose (Re) on the electronic display means (8).

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