Texas Register, Volume 29, Number 5, Pages 727-1096, January 30, 2004 Page: 816
727-1096 p. ; 28 cm.View a full description of this periodical.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
[(2) Operatinga and ,afety procedues. Bach registrant shall
have and implement written operating and safety oed so. These
proceduress shall be made available to each individual operating a ra-
pro edures hal; include but are not limited to, itemsin sabsection
( of this setion.]
(3) (No change.)
(4) Protective devices. Protective devices shall be utilized
when required, as in subsection (i)(8)(B) and (D), (i)(10), (i)(13) and
(m)(8) [(e)(8)] of this section.
(A) Protective devices shall be of no less than 0.25 mil-
limeter (mm) lead equivalent material except as specified in subsections
(i)(13) and (m)(8)(B)(i) of this section.
(B) Protective devices, including aprons, gloves, and
shields shall be checked annually for defects such as holes, cracks,
and tears. These checks may be performed by the registrant by vi-
sual or tactile means, or x-ray imaging. If a defect is found, protective
devices shall be replaced or removed from service until repaired. A
record of this test shall be made and maintained by the registrant in ac-
cordance with subsection (s)(1) [(t)(1)] of this section for inspection by
the agency.
(5) - (8) (No change.)
(9) Viewing system and contact with patient. [Windows
m irelos ed ireuit ..television;- ,or a method shall be provided to per-
mit the operator to continuously observe the patient during irradiation.]
(A) Windows, mirrors, closed circuit television, or
another method shall be provided to permit the operator to continuously
observe the patient during irradiation.
(B) The operator shall be able to maintain verbal, visual,
and aural contact with the patient.
(10) - (11) (No change.)
[E) Requirements specifically for chroprati ,ediea and
pediatric facilities.]
(12) [(-1-)] Patient protection. Notwithstanding the provi-
sions of subsection (i)(7) of this section, other patients who are in line
with the primary beam and who cannot be removed from the room shall
be protected by whole body protective barriers of a minimum of 0.25
mm lead equivalent material or so positioned that the nearest portion
of their body is at least six feet from both the tube head and the nearest
edge of the image receptor.
[(2) Contact with the patient The operator shall be able to
maintain verbal visual and aural contact with the patient]
(13) [(3)] Gonadal shielding. Gonadal shielding shall be
used on patients when the gonads are in or within 5 cm of the useful
beam. This requirement does not apply if the shielding will interfere
with the diagnostic procedure. Gonadal shielding shall be of at least
0.5 mm lead equivalent material.
() [(k)] Radiographic entrance exposure limits: [for ehiro-
pramtic, medic4 and pediatric feilitie- This &ahsection does not ap-
ply to veterinary facilities.] The in-air exposure determined for the
technique used by the registrant for the specified average human adult
patient thickness for routine medical radiography shall not exceed the
entrance exposure limits in the following Table II [Table I].
Figure: 25 TAC 289.227(j)
[Figure: 25 TAG 289.227(k)](k) [(1)] Machine [General] requirements for [all diagnostic]
general radiographic and fluoroscopic x-ray systems: [for hoprati,
medical~ -,podiatric, and veterinary facilities.]
(1) Warning label. The warning label will meet the require-
ments of 289.231(z) of this title.
(2) Mechanical support of tube head. The tube housing as-
sembly shall be adjusted to remain stable during an exposure unless
tube housing movement is a designed function of the x-ray system.
(3) Battery charge indicator. On battery-powered x-ray
generators, visual means shall be provided on the control panel to
indicate whether the battery is in a state of charge adequate for proper
operation.
[(4) Radiation from components other than the diagnostic
source assembly The radiation emitted by a component other than the
diagnotie source assembly shall not exceed 2 milliroentgens (mR) in
one heour at 5 em from any accessible surface of the component when
it is operated in an assembled -ray system under any conditions for
which it was designed Measurement is averaged ever an area of 400
square centimeters (nm2 with no linear dimension greater than 20 m]
(4) [k-5)] Beam quality. The following requirements apply
to beam quality.
(A) Half-value layer.
(i) The half-value layer of the useful beam for a
given x-ray tube potential shall not be less than the values shown in
the following Table II. If it is necessary to determine such half-value
layer at an x-ray tube potential that is not listed in Table II, linear
interpolation may be made.
Figure: 25 TAC 289.227(k)(4)(A)(i)
[Figure: 25 TAG 289.227(k)(5)(A)(i)]
(ii) For capacitor energy storage equipment, compli-
ance with the requirements of paragraph (4) [({5)] of this subsection
shall be determined with the maximum quantity of charge per expo-
sure.
(B) Filtration controls.
(i) For x-ray systems that have variable kVp and
variable filtration for the useful beam, a device shall link the kVp
selector with the filters and shall prevent an exposure unless the
minimum amount of filtration required by subparagraph (A) of this
paragraph is in the useful beam for the given kVp that has been
selected.
(ii) Any other system having removable filters shall
be required to have the minimum amount of filtration as required by
subparagraph (A)(i) of this paragraph permanently located in the useful
beam during each exposure.
(5) [46)] Multiple tubes. Where two or more radiographic
tubes are controlled by one exposure switch, the tube or tubes that have
been selected shall be clearly indicated prior to initiation of the expo-
sure. This indication shall be both on the x-ray control panel and at or
near the tube housing assembly that has been selected.
(6) [(7-)] Technique and exposure indicators.
(A) The technique factors to be used during an exposure
shall be indicated before the exposure begins except when automatic
exposure controls are used, in which case the technique factors that are
set prior to the exposure shall be indicated.
(B) On equipment having fixed technique factors, the
requirement of subparagraph (A) of this paragraph may be met by per-
manent markings.29 TexReg 816 January 30, 2004 Texas Register
Upcoming Pages
Here’s what’s next.
Search Inside
This issue can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Periodical.
Texas. Secretary of State. Texas Register, Volume 29, Number 5, Pages 727-1096, January 30, 2004, periodical, January 30, 2004; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth101101/m1/88/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.