US3649835A - Adjustable radiation shield - Google Patents

Adjustable radiation shield Download PDF

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US3649835A
US3649835A US37179A US3649835DA US3649835A US 3649835 A US3649835 A US 3649835A US 37179 A US37179 A US 37179A US 3649835D A US3649835D A US 3649835DA US 3649835 A US3649835 A US 3649835A
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shield
collimator
ray
guide member
window
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US37179A
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Dennis D Brackenbrough
Harold E Godfrey
Richard G Mills
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor
    • A61B6/107—Protection against radiation, e.g. shielding

Definitions

  • a plurality of radiopaque metal plates are mounted on a support on the collimator is such relation to the collimator as to be normally out of the way of the light field, but be adjustable to obstruct a selected portion of the light field, enabling the technologist to visualize by the shadow cast by the shield the exact area to be protected from radiation without the knowledge of or inconvenience to the patient.
  • the herein invention solves this problem by providing a shield on the X-ray collimator in such relation that it is fully adjustable to obstruct X-rays to a predetermined area, clearly indicated by the shadow of the shield on the light field projected by the collimator on the patient prior to the X-ray exposure.
  • the adjustable radiation shield device herein is readily attachable to an X-ray collimator, it is simple in operation, more effective in accurate shielding of a definite area from radiation, reduces apprehension on part of the patient and technologist, it is always available being in fixed relation to the cone of the X-ray machine, it saves time, and it can be used and applied without touching the patient and without the patient being aware of the shield protecting his reproductive organs.
  • FIG. 1 is a fragmental view of the X-ray machine with the collimator thereon and the shield adjusted to produce a shaded area in the light field.
  • FIG. 2 is an exposed film showing the blank shielded area.
  • FIG. 3 is a side view of the device attached to a collimator having a transparent plate support.
  • FIG. 4 is a bottom plan view of the shield device on the collimator.
  • FIG. 5 is a perspective view of the shield device on the collimator.
  • FIG. 6 is a developed view of the shield device and its mounting directly on the collimator casing.
  • the X-ray machine 1 has mounted thereon a collimator 2, in fixed relation to its cone so that the collimator determines the size and shape of the beam. This is accomplished by a shutter system (not shown) in the collimator which follows the configuration of the conventional fixed cone of the machine.
  • the collimator is provided with suitable controls, not shown, to adjust the shutter to the desired configuration of the X-ray beam.
  • the collimator is internally lighted and by suitable reflectors it projects an ordinary light beam through the shutter, whereby the result of the shutter adjustment can be visually observed.
  • the adjustments are performed by knobs 3.
  • the light source in the collimator is turned on and off by a usual light switch 4.
  • the shield device 7 is adjusted to cast a shadow 8 on the part of the body 9 of the patient to be shielded from radiation.
  • the switch 4 is turned off and the X-ray machine is turned on and the plate 11 is exposed.
  • the blank area 12, as shown in FIG. 2, is the protected area.
  • the remaining area 13 is exposed as shown on the film plate 11.
  • the collimator 2 has thereon parallel retaining bars 14 which have channels 16 facing one another. These retaining bars 14 are below the bottom of the collimator 2 which has in it a transparent plastic window.
  • Abase plate 17, also made of transparent plastic sheet, has thereon a pair of spacing blocks 18 on which is mounted a generally U-shaped transparent strip 19.
  • a plurality of generally triangular radiopaque metal plates 21 are located between the base plate 17 and the strip 19 so that the narrow ends 22 of the plates 21 are pivotally held together by a suitable pivot 23.
  • the pivot 23 extends through a system of slots 24 and is suitably supported on the face of the base plate 17 adjacent the bottom of the collimator 2.
  • the wider ends 26 of the plates 21 extend beyond the U-shaped strip 19 and have a finger 27 projecting therefrom for manipulation of the plates 21.
  • the plates 21 may be made of lead, tin, or suitable metal alloy capable of shielding from radiation.
  • the system of slots 24 includes a cross shape in the middle of the base plate 17 and also a right angle portion 28 at one side in an out of the way position.
  • the plates by means of shifting the pivot 23 in the system of slots 24, can be adjusted to the correct position and then spread apart about the pivot 23 so as to produce the shadow for the required area.
  • the U- shaped transparent strip 19 is out of the way and it is substantially aligned with the wider end 24 of the plates 21 to prevent accidental dropping of the plates and to help in maintaining the plates in substantially horizontal position.
  • a pair of bracket plates 31 are suitably secured to the opposite sides of the collimator 2 out of the way of the transparent window 32 on the bottom of the collimator 2.
  • a U-shaped support bar 33 on which is slideable a support sleeve 34.
  • a stud 36 which pivotally supports a fiat guide 37 by means of a washer 38 and a handle nut 39.
  • the stud 36 extends through an elongated slot 41 in the guide 37 so that the position of the guide can be suitably adjusted.
  • the plates 21 are supported on a pivot bolt 42 extended through the elongated slot 41 are are held in place by a wing nut 43.
  • the guide 37 can be turned around so as to hold the plates in an out of the way position and then can be turned so as to bring the plates 21 under the window 32, then by suitably shifting the pivot 42 and the guide 37 the plates 21 can be accurately located and then spread apart in the manner heretofore described to produce a shadow over the required area.
  • a protective shield device for shielding a selected area of the body from X-ray radiation from an X-ray device comprismg,
  • said support means including means on said X-ray device to determine the configuration of the X-ray beam from said X-ray device,
  • said shield element being between said light beam producing means and said body whereby the shadow of said element on said body visually indicates the selected area to be protected.
  • said shield is selectively movable into and out of the path of said light beam and said X-ray beam.
  • said light producing means being a collimator having a window for said light beam and for said X-ray beam, and said shield element coacting with said window for forming an adjusted shadow on said body.
  • said support means including a guide member mounted on said collimator
  • said shield element including radiopaque parts
  • said guide member being a transparent plate under said win- 'dow.
  • said guide member being a rigid element

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

This adjustable radiation shield fits on the collimator used on X-ray equipment for indicating and adjusting the exact area to be exposed to radiation. A shutter of the collimator is adjustable to indicate by means of a light field the area to be exposed. A plurality of radiopaque metal plates are mounted on a support on the collimator is such relation to the collimator as to be normally out of the way of the light field, but be adjustable to obstruct a selected portion of the light field, enabling the technologist to visualize by the shadow cast by the shield the exact area to be protected from radiation without the knowledge of or inconvenience to the patient.

Description

United States Patent Brackenbrough et a1.
ADJUSTABLE RADIATION SHIELD Inventors: Dennis D. Brackenbrough, PO. Box 226, Cutten, Calif. 95534; Harold E. Godfrey, Jr., 1487 Allen Drive, Eureka, Calif.
95534; Richard G. Mills, Route 1, Box 1, Bay Side, Calif. 95521 Filed: May 14, 1970 Appl. No.: 37,179
References Cited UNITED STATES PATENTS 4/1966 Van De Geijn ..250/86 Peyser ..250/86 X Graf mm, .f. .....2s0/10s FS Primary Examiner-Archie R. Borchelt -Attorney-George B. White ABSTRACT This adjustable radiation shield fits on the collimator used on X-ray equipment for indicating and adjusting the exact area to be exposed to radiation. A shutter of the collimator is adjustable to indicate by means of a light field the area to be exposed. A plurality of radiopaque metal plates are mounted on a support on the collimator is such relation to the collimator as to be normally out of the way of the light field, but be adjustable to obstruct a selected portion of the light field, enabling the technologist to visualize by the shadow cast by the shield the exact area to be protected from radiation without the knowledge of or inconvenience to the patient.
8 Claims, 6 Drawing Figures PATENTEDMAR 14 I972 SHEET 2 OF 3 I INVEN TORS DENNIS D- BRAC/(ENBPOUGH HAROLD E. GODFREY J2. RICHARD 6. NULL 5 A TTORME V PAIENTEDMAR 1 4 I972 3, 649 83 5 SHEET 3 0r 3 HAROLD E. GODFREY Jz. Q e/cunzp e. MILLS ATTORNEY ADJUSTABLE RADIATION SHIELD BACKGROUND OF THE INVENTION It has been the practice in the radiology field of medicine, when radiographing, to place a lead shield over the reproductive organs. This has been embarrassing both to the patient and the technologist. In some instances the technologist has been lax due to embarrassment and inconvenience in placing the shield over the patient.
The herein invention solves this problem by providing a shield on the X-ray collimator in such relation that it is fully adjustable to obstruct X-rays to a predetermined area, clearly indicated by the shadow of the shield on the light field projected by the collimator on the patient prior to the X-ray exposure.
The adjustable radiation shield device herein is readily attachable to an X-ray collimator, it is simple in operation, more effective in accurate shielding of a definite area from radiation, reduces apprehension on part of the patient and technologist, it is always available being in fixed relation to the cone of the X-ray machine, it saves time, and it can be used and applied without touching the patient and without the patient being aware of the shield protecting his reproductive organs.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmental view of the X-ray machine with the collimator thereon and the shield adjusted to produce a shaded area in the light field.
FIG. 2 is an exposed film showing the blank shielded area.
FIG. 3 is a side view of the device attached to a collimator having a transparent plate support.
FIG. 4 is a bottom plan view of the shield device on the collimator.
FIG. 5 is a perspective view of the shield device on the collimator.
FIG. 6 is a developed view of the shield device and its mounting directly on the collimator casing.
DETAILED DESCRIPTION The X-ray machine 1 has mounted thereon a collimator 2, in fixed relation to its cone so that the collimator determines the size and shape of the beam. This is accomplished by a shutter system (not shown) in the collimator which follows the configuration of the conventional fixed cone of the machine. The collimator is provided with suitable controls, not shown, to adjust the shutter to the desired configuration of the X-ray beam. In order to accurately and visually pre-determine the configuration of the X-ray beam, the collimator is internally lighted and by suitable reflectors it projects an ordinary light beam through the shutter, whereby the result of the shutter adjustment can be visually observed. The adjustments are performed by knobs 3. The light source in the collimator is turned on and off by a usual light switch 4. When the light beam 6 of the collimator is adjusted to the desired configuration and area, the shield device 7 is adjusted to cast a shadow 8 on the part of the body 9 of the patient to be shielded from radiation. The switch 4 is turned off and the X-ray machine is turned on and the plate 11 is exposed.
The blank area 12, as shown in FIG. 2, is the protected area. The remaining area 13 is exposed as shown on the film plate 11.
In the illustrative form shown in FIGS. 3 to 5 inclusive the collimator 2 has thereon parallel retaining bars 14 which have channels 16 facing one another. These retaining bars 14 are below the bottom of the collimator 2 which has in it a transparent plastic window. Abase plate 17, also made of transparent plastic sheet, has thereon a pair of spacing blocks 18 on which is mounted a generally U-shaped transparent strip 19. A plurality of generally triangular radiopaque metal plates 21 are located between the base plate 17 and the strip 19 so that the narrow ends 22 of the plates 21 are pivotally held together by a suitable pivot 23. The pivot 23 extends through a system of slots 24 and is suitably supported on the face of the base plate 17 adjacent the bottom of the collimator 2. The wider ends 26 of the plates 21 extend beyond the U-shaped strip 19 and have a finger 27 projecting therefrom for manipulation of the plates 21. The plates 21 may be made of lead, tin, or suitable metal alloy capable of shielding from radiation.
The system of slots 24 includes a cross shape in the middle of the base plate 17 and also a right angle portion 28 at one side in an out of the way position. The plates, by means of shifting the pivot 23 in the system of slots 24, can be adjusted to the correct position and then spread apart about the pivot 23 so as to produce the shadow for the required area. The U- shaped transparent strip 19 is out of the way and it is substantially aligned with the wider end 24 of the plates 21 to prevent accidental dropping of the plates and to help in maintaining the plates in substantially horizontal position.
In the form shown in FIG. 6 a pair of bracket plates 31 are suitably secured to the opposite sides of the collimator 2 out of the way of the transparent window 32 on the bottom of the collimator 2. On the free ends of the bracket plates 31 is fixed a U-shaped support bar 33 on which is slideable a support sleeve 34. From the support sleeve 34 extends downwardly a stud 36 which pivotally supports a fiat guide 37 by means of a washer 38 and a handle nut 39. The stud 36 extends through an elongated slot 41 in the guide 37 so that the position of the guide can be suitably adjusted. The plates 21 are supported on a pivot bolt 42 extended through the elongated slot 41 are are held in place by a wing nut 43. In this form the guide 37 can be turned around so as to hold the plates in an out of the way position and then can be turned so as to bring the plates 21 under the window 32, then by suitably shifting the pivot 42 and the guide 37 the plates 21 can be accurately located and then spread apart in the manner heretofore described to produce a shadow over the required area.
We claim:
1. A protective shield device for shielding a selected area of the body from X-ray radiation from an X-ray device, comprismg,
a shield element opaque to said radiation,
and means to adjustably support said shield element on said X-ray device in the path of the X-ray beam from said X- ray device to said body, thereby to cast a shadow on a selected part of said body,
said support means including means on said X-ray device to determine the configuration of the X-ray beam from said X-ray device,
and selectively controlled light beam producing means in said configuration determining means to visually indicate the adjusted configuration on said body,
said shield element being between said light beam producing means and said body whereby the shadow of said element on said body visually indicates the selected area to be protected.
2. The protective shield device specified in claim 1 and said support means including a guide member mounted on said light producing means,
means to adjustably hold said shield on said guide member,
whereby said shield is selectively movable into and out of the path of said light beam and said X-ray beam.
3. The protective shield device specified in claim 1, and
said light producing means being a collimator having a window for said light beam and for said X-ray beam, and said shield element coacting with said window for forming an adjusted shadow on said body.
4. The protective shield device specified in claim 3, and
said support means including a guide member mounted on said collimator,
and means to hold said shield element on said guide member in adjusted position relatively to said window.
5. The protective shield device specified in claim 4, and
said shield element including radiopaque parts, and
means to connect said parts relatively movably for selected configurations of said shield element,
for adjustment of said shield relatively to said collimator window.
7. The protective shield device specified in claim 6, and
said guide member being a transparent plate under said win- 'dow.
8. The protective shield device specified in claim 6, and
said guide member being a rigid element,
and means to support said rigid element adjustably relatively to said collimator window.

Claims (8)

1. A protective shield device for shielding a selected area of the body from X-ray radiation from an X-ray device, comprising, a shield element opaque to said radiation, and means to adjustably support said shield element on said Xray device in the path of the X-ray beam from said X-ray device to said body, thereby to cast a shadow on a selected part of said body, said support means including means on said X-ray device to determine the configuration of the X-ray beam from said X-ray device, and selectively controlled light beam producing means in said configuration determining means to visually indicate the adjusted configuration on said body, said shield element being between said light beam producing means and said body whereby the shadow of said element on said body visually indicates the selected area to be protected.
2. The protective shield device specified in claim 1, and said support means including a guide member mounted on said light producing means, means to adjustably hold said shield on said guide member, whereby said shield is selectively movable into and out of the path of said light beam and said X-ray beam.
3. The protective shield device specified in claim 1, and said light producing means being a collimator having a window for said light beam and for said X-ray beam, and said shield element coacting with said window for forming an adjusted shadow on said body.
4. The protective shield device specified in claim 3, and said support means including a guide member mounted on said collimator, and means to hold said shield element on said guide member in adjusted position relatively to said window.
5. The protective shield device specified in claim 4, and said shield element including radiopaque parts, and means to connect said parts relatively movably for selected configurations of said shield element, and said shield element holding means including relatively slideable connection between said guide member and said shield element.
6. The protective shield device specified in claim 4, and said guide member having a system of slots, said shield element including a plurality of radiopaque plates, a pivot holding said plates together adjustably to selected shield configurations, and means to slideably hold said pivot in said system of slots for adjustment of said shield relatively to said collimator window.
7. The protective shield device specified in claim 6, and said guide member being a transparent plate under said window.
8. The protective shield device specified in claim 6, and said guide member being a rigid element, and means to support said rigid element adjustably relatively to said collimator window.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214167A (en) * 1977-09-01 1980-07-22 Gade Ernst August Device for protection of the gonads
US4255667A (en) * 1979-06-01 1981-03-10 Bolin Leonard E X-ray shield stand
US4266139A (en) * 1980-01-07 1981-05-05 Louis Sportelli Composite shielding means and mounting means for x-ray machines
US4472637A (en) * 1982-05-10 1984-09-18 Louis Sportelli Composite shielding means and mounting means therefor
US4598208A (en) * 1982-10-04 1986-07-01 Varian Associates, Inc. Collimation system for electron arc therapy
US4707846A (en) * 1985-06-12 1987-11-17 Louis Sportelli Full spine shielding means
US5365566A (en) * 1992-08-24 1994-11-15 Siemens Aktiengesellschaft Radiation diaphragm
US7207714B1 (en) 2006-05-26 2007-04-24 Harkeerat Dhillon Extensible positioning and targeting apparatus for a beam emitting source
US20100272238A1 (en) * 2009-04-27 2010-10-28 Machan Lindsay S Sysstem for reduction of exposure to X-ray Radiation
US20110075805A1 (en) * 2009-04-27 2011-03-31 Machan Lindsay S X-ray system
US20110238105A1 (en) * 2007-11-06 2011-09-29 Daniel Gelbart Vivo inflatable structures, for example to expand stents
WO2015104674A1 (en) * 2014-01-12 2015-07-16 Ronny Winshtein Apparatuses and methods for filtering or screening radiation
JP2015217228A (en) * 2014-05-20 2015-12-07 日立アロカメディカル株式会社 Radiation diagnostic device
US20180162584A1 (en) * 2016-12-08 2018-06-14 Jeffrey Tauber X-ray detectable security bin having handles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718598A (en) * 1952-04-12 1955-09-20 Graf Herbert Diagnostic x-ray apparatus
US3156824A (en) * 1960-12-01 1964-11-10 Howdon Videx Products Corp X-ray collimator having visible light centering arrangement and an adjustable filter for X-rays
US3248547A (en) * 1963-10-21 1966-04-26 Picker X Ray Corp Device for accurately positioning X-ray filters in the beam path
US3286094A (en) * 1964-03-24 1966-11-15 John I Pretto Radiation energy shield protecting a body area of a patient from x-rays and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718598A (en) * 1952-04-12 1955-09-20 Graf Herbert Diagnostic x-ray apparatus
US3156824A (en) * 1960-12-01 1964-11-10 Howdon Videx Products Corp X-ray collimator having visible light centering arrangement and an adjustable filter for X-rays
US3248547A (en) * 1963-10-21 1966-04-26 Picker X Ray Corp Device for accurately positioning X-ray filters in the beam path
US3286094A (en) * 1964-03-24 1966-11-15 John I Pretto Radiation energy shield protecting a body area of a patient from x-rays and the like

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214167A (en) * 1977-09-01 1980-07-22 Gade Ernst August Device for protection of the gonads
US4255667A (en) * 1979-06-01 1981-03-10 Bolin Leonard E X-ray shield stand
US4266139A (en) * 1980-01-07 1981-05-05 Louis Sportelli Composite shielding means and mounting means for x-ray machines
US4472637A (en) * 1982-05-10 1984-09-18 Louis Sportelli Composite shielding means and mounting means therefor
US4598208A (en) * 1982-10-04 1986-07-01 Varian Associates, Inc. Collimation system for electron arc therapy
US4707846A (en) * 1985-06-12 1987-11-17 Louis Sportelli Full spine shielding means
US5365566A (en) * 1992-08-24 1994-11-15 Siemens Aktiengesellschaft Radiation diaphragm
US7207714B1 (en) 2006-05-26 2007-04-24 Harkeerat Dhillon Extensible positioning and targeting apparatus for a beam emitting source
US20110238105A1 (en) * 2007-11-06 2011-09-29 Daniel Gelbart Vivo inflatable structures, for example to expand stents
US8758386B2 (en) 2007-11-06 2014-06-24 Daniel Gelbart In vivo inflatable structures, for example to expand stents
US20100272238A1 (en) * 2009-04-27 2010-10-28 Machan Lindsay S Sysstem for reduction of exposure to X-ray Radiation
US7983391B2 (en) * 2009-04-27 2011-07-19 Machan Lindsay S System for reduction of exposure to X-ray radiation
US8693628B2 (en) 2009-04-27 2014-04-08 Lindsay S. Machan X-ray system
US20110075805A1 (en) * 2009-04-27 2011-03-31 Machan Lindsay S X-ray system
WO2015104674A1 (en) * 2014-01-12 2015-07-16 Ronny Winshtein Apparatuses and methods for filtering or screening radiation
JP2015217228A (en) * 2014-05-20 2015-12-07 日立アロカメディカル株式会社 Radiation diagnostic device
US20180162584A1 (en) * 2016-12-08 2018-06-14 Jeffrey Tauber X-ray detectable security bin having handles

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