Patent Number: 047078464
Section: claims

1. A masking means for directing radiated energy to a specific area of a subject under observation or inspection comprising a first radiation shielding or filtering means having a vertically oriented elongated opening with a broader portion nearer its distal or lower end, said opening located medially along the horizontal, positioned immediately adjacent to and in front of the collimator of an X-ray radiation generating device within a space in a mount or support means defined by two sets of transverse tracks, a first set of tracks for removably positioning said first shielding or filtering means in said space and a second set of tracks transverse to said first set of tracks capable of removably securing and adjustably positioning a second shielding or filtering means adjustably secured to a substantially rectangular transparent plate, said transparent plate being juxtaposed in front of and against said first shielding or filtering means for retaining said first shielding or filtering means within its defined space and in juxtaposition to the collimator, said second shielding or filtering means being positioned to actively cooperate with said first shielding or filtering means for permitting only the X-ray radiation necessary to cause an image to appear on the X-ray film for the specific area to be observed or inspected to pass through to be filtered by said first and second shielding or filtering means and for blocking unecessary radiation from contacting the subject and causing excessive exposure to such radiation. 2. The masking means of claim 1 wherein said first radiation shielding or filtering means is substantially rectangular in configuration and comprised of a metallic radiopaque plate laminated between two similarly configured plates of translucent plastic. 3. The masking means of claim 1 wherein the broader portion of said elongated opening being in the lower one-fourth of said opening. 4. The masking means of claim 1 wherein the broader portion of said elongated opening being twice the width of the upper, narrower portion. 5. A full spine shielding means for directing radiated energy to a specific area of a subject under observation or inspection comprising a first radiation shielding or filtering means having a vertically oriented elongated opening with a broader portion nearer its distal or lower end, said opening located medially along the horizontal with said broader portion being in the lower one-fourth of said opening and twice the width of the upper, narrower portion, positioned immediately adjacent to and in front of the collimator of an X-ray radiation generating device within a space in a mount or support means defined by two sets of transverse tracks, a first set of tracks for removably positioning said first shielding or filtering means in said space and a second set of tracks transverse to said first set of tracks capable of removably securing and adustably positioning a second shielding or filtering means adjustably secured to a substantially rectangular transparent plate, said transparent plate being juxtaposed in front of and against said first shielding or filtering means for retaining said first shielding or filtering means within its defined space and in juxtaposition to the collimator, said second shielding or filtering means being positioned to actively cooperate with said first shielding or filtering means for permitting only the X-ray radiation necessary to cause an image to appear on the X-ray film for the specific area to be observed or inspected to pass through or be filtered by said first and second shielding or filtering means and for blocking unecessary radiation from contacting the subject and causing excessive exposure to such radiation. 6. The full spine shielding means of claim 5 wherein said first radiation shielding or filtering means is substantially rectangular in configuration and comprised of a metallic radiopaque plate laminated between two similarly configured plates of translucent plastic. 7. A masking means for directing radiated energy from an X-ray radiation generating source to a specific area of a subject under observation or inspection including a means for attaching a support means to a front portion of a collimator of an X-ray radiation generating machine, said support means having first and second sets of transverse tracks, said second set of tracks capable of removably securing and adjustably positioning a radiation shielding or filtering means adjustably secured to a substantially rectangular transparent plate within said second set of tracks, the improvement comprising another radiation shielding or filtering means having a vertically oriented elongated opening with a broader portion nearer its distal or lower end, said opening being located medially along the horizontal, removably interposed in juxtaposition between the collimator of the X-ray radiation generating machine and said transparent plate within a space defined by said first set of tracks of said support means and being retained in said juxtaposition within said support means by said transparent plate, said another radiation shielding or filtering means being positioned to actively cooperate with said radiation shielding or filtering means for permitting only the X-ray radiation necessary to cause an image to appear on the X-ray film for the specific area to be observed or inspected to pass through or be filtered by said shielding or filtering means and for blocking unnecessary radiation from contacting the subject and causing excessive exposure to such radiation. 8. The masking means of claim 7 wherein said another radiation shielding or filtering means is substantially rectangular in configuration and comprised of a metallic radiopaque plate laminated between two similarly configured plates of translucent plastic. 9. The masking means of claim 7 wherein the broader portion of said elongated opening being in the lower one-fourth of said opening. 10. The masking means of claim 7 wherein the broader portion of said elongated opening being twice the width of the upper, narrower portion.