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MOBILE C-ARM PROTECTION |
This radiation shielding product is
primarily designed to prevent exposure from scattered radiation. These
shields can be used on any table where x-ray fluoroscopy is used. Each
of the standard system components provides 0.5mm PB equivalent
shielding. Individual curtains are attached at the head of the table
and both right and left sides which provide protection for the lower
body. Upper body protection is accomplished by a shielding curtain
that wraps around the image intensifier of the C-Arm.
Curtain Component Specifications:
- All table curtains are attached
using the existing accessory rail hardware.
- All curtains shields are 32 inches
in length (81cm)
- Curtains attached to side 1 & 2 are
30 inches wide (71cm)
- The curtain attached to the head of
the table is 26 inches wide (66 cm) and overlaps sides 1 & 2
- A fourth shield is attached by
VELCRO between side 1 & 2 under the table pad at the head of the
table
- Image intensifier curtain is 11
inches (28 cm) long and 30 inches (71 cm) wide. The shield is
secured to the image intensifier with straps and VELCRO and can be
adjusted to a full up or down position
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A request was made to take scatter
measurements of a radiographic/fluoroscopic (R/F) unit and make a comparison of radiation levels to a C-Arm. There was a concern that
the radiation levels from a mobile C-arm would be greater than the
levels from a stationary R/F room. For the particular units as
described below this was not the case. The scatter reading from the
C-arm was less.
- Below are the results of scatter
measurements done with a H20 phantom and lead to simulate a patient
examination. Readings were taken at 30 cm and at 66 cm at varying
points approximately 12 cm from the central axis of the fluoroscopic
beam. 80 kVp and 2.3 ma were the technique factors, large field of
view.
- The first unit was Radiographic
Room Nine in St. Anthony's Hospital main Radiology, a Siemens
Digital Radiographic/Fluoroscopic Room.
- The other unit was an OEC 9800
series (C-Arm) with a modified mobile x-ray/examination table from
Burkhart Roentgen International. A protective lead drape was used on
the x-ray table. The x-ray tube (positioned inferiorly or 1800) was
draped with the image intensifier superior (00). The table would
have to be used in any examination if the results of the testing as
reflected below were to be duplicated.
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Equipment |
Distance |
Pt
Superior |
Pt
Inferior |
| Siemen's R/F |
30 cm |
10 mR/hr |
3.0
mR/hr |
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66 cm |
4.3
mR/hr |
1.1
mR/hr |
| OEC C-Arm |
30 cm |
2.5
mR/hr |
2.5
mR/hr |
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66 cm |
0.8
mR/hr |
0.8
mR/hr |
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All items quoted FOB our factory. Prices subject to change without
written notice. |
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