Radiation Products Design
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Silver Plated Eye Shields for Superficial X-Ray
Eye Shields protect the patient's lens during radiation therapy treatments.
Small and medium solid lead shields fit below the eyelid in order to protect the lens, whilst still permitting irradiation to the entire thickness and width of the eyelids during the treatment of superficial basal cell carcinomas of the skin.
Large solid lead shields are placed over the eyelid when areas surrounding the eyes require irradiation. When only a portion of the eyelid requires irradiation, an Extra Large Shield with a Window is properly placed over the eyelid. Eye Shields are fabricated with virgin lead and are silver-plated for life long protection. Using a soft contact lens, or coating the eye shield with dental wax will give a smooth surface on the eye to prevent scratching or irritation to the eye. The lead permits less than 1% transmission of the radiation intensity at 120 kVp (3 mm Al HVL).
Always consult the Radiation Physicist when using eye shields in electrons.
Please refer to the following paper: Field Shaping in Electron
Beam Therapy by F.M. Khan, Ph.D., Oct. 1976, British Journal of Radiology.
Specifications
Warranty: One year
| Sterilization: Gas - | DO NOT Autoclave DO NOT use Saline Solution |
These Silver-Plated Eye Shields are TGA Approved
A complete set of Silver-Plated Eye Shields packed in a velvet-lined carrying case is available. It contains four pairs: small, medium, large and extra large with window.
| Silver-Plated Eye Shields for Superficial | ||
|---|---|---|
| 1/16" (1.59mm) Thick with Handle | ||
| Item # | Description | Size |
| 934-008 | Silver-Plated Set - 2# of each size in case | |
| 934-012 | Small | 20mm x 23mm x 1.7mm Thick |
| 934-014 | Medium | 23mm x 25m x 1.7mm Thick |
| 934-014 | Large | 28m x 30mm x 1.7mm Thick |
| 934-018 | Extra Large with Window | 31mm Diameter x 1.7mm Thick |
Tungsten Eye Shields for Electron or Superficial Shielding
Tungsten Eye Shields can use either the 0.5mm or 1mm Aluminium Cap to reduce the electron backscatter to the eyelid. (Both size caps are included with each Eye Shield.)
The Eye Shield can be used without the cap when placed superficially.
Recommendations Based on Transmission Values:
The 2 mm tungsten eye shield should be used for 6 MeV, and the 3 mm tungsten eye shield should be used for 9 MeV. These tungsten eye shields are not recommended for use above 9 MeV.
The user will have to determine an acceptable amount of backscatter to decide whether to use the 0.5 mm or 1 mm aluminium cap.
Using a soft contact lens will prevent scratching to the cornea or iris when treating the eye using eye shields.
Sterilization: Clean with soap and water, rinse thoroughly with water as soap residue will burn the eye. Gas or Autoclave, separate caps and shield before sterilization. Follow cleaning directions carefully to preserve the tungsten eye shields.
Specifications:
Tungsten Density: 17 g/cm3
Aluminium Density: 2.718 g/cm3
Unreferenced data on this product is preliminary findings of Radiation Products Design, Inc. and is not to be used as a technical reference.
*XV-2 Film placed under/below tungsten eye shield at 3 mm depth (anterior surface of lens)
**TLD Microcubes placed under simulated eye lid using tungsten eye shields
Reference: Evaluation of Eye Shields made of Tungsten and Aluminium in High-Energy Electron Beam - Randi D. Weaver B.S. Fairview - University Med. Ctr. PO Box 494, 420 Delaware St. SE, Mpls., MN 55455 Int. J. Radiation Oncology Biol. Phys, Vol. 41 Nal, pp 233-237-1998
Tungsten Eye Shields are TGA Approved Products
Testicle Shields
| Round Testicle Shields and Adjustable Testicle Shield Stand | |
|---|---|
| Item | Description |
| 928-200 | Small Round Testicle Shield |
| 928-250 | Medium Round Testicle Shield |
| 928-300 | Large Round Testicle Shield |
| 928-500 | Set of 3 Round Testicle Shields |
| 928-505 | Adjustable Stand for Round Testicle Shields |
- Shield interlock prevents radiation leakage and holds alignment
- 1/2" (1.27 cm) lead wall thickness
- Open sector provided in each shield to allow comfortable positioning on patient
- Lugs cast into each half of the shield unit provide anchor points for the two rubber straps used to hold the unit together
- All surfaces of the shields are coated with a tan polyurethane paint
The lead testicle shields are designed with a tongue and groove interlock to eliminate radiation leakage where the blocks join together. This also prevents the two halves from sliding apart. The shield's top and bottom halves can be secured together with two rubber straps (supplied with each unit) or with nylon tape. Rotating the entrance of the shield toward the ceiling will reduce scatter radiation from entering the shield. A soft cotton sock or the Kianni cover (Item 928-150) can be used to cover the testicles when placing them inside a cold shield.
The testicle shields are available in three sizes: small, medium and large. When using the Adjustable Shield Stand, no straps are needed. This easily Adjustable Testicle Shield Stand will cradle all round testicle shields. A hand knob allows for easy vertical adjustment from 1" to 10" (five turns per inch). The counter weighted base is made of cast iron. A plastic plate, secured to the base, provides easy positioning. The unit can be used for anterior and posterior treatments.
It is recommended that the Adjustable Testicle Shield Stand (Item 928-505) be used while raising and lowering the testicle shields, as this will reduce patient discomfort.
Specifications:
| Item 928-200 (Small) | Item 928-250 (Medium) | Item 928-300 (Large) | Item 928-505 (Stand) |
| Size: 2" I.D. x 3" O.D. | Size: 2.5" I.D. x 3.5" O.D. | Size: 3" I.D. x 4" O.D. | Size: 5" W x 10" D x 13.5" H |
| Weight: 4 lbs. | Weight: 5.7 lbs. | Weight: 7.25 lbs. | Weight: 10.6 lbs. |
Matrix Thermoshield™ THERMO-SHIELD™
Moldable Thermoplastic Radiation Shielding Material
| Matrix Thermoshield™ THERMO-SHIELD™ Moldable Thermoplastic Radiation Shielding Material |
|
|---|---|
| Item # | Description |
| MX1-0813 | Matrix Thermoshield™ 8 x 8 cm x 13 mm |
| MX1-0813P | Matrix Thermoshield™ 8 x 8 cm x 13 mm with Portal |
| MX1-0816 | Matrix Thermoshield™ 8 x 8 cm x 16 mm |
| MX1-0816P | Matrix Thermoshield™ 8 x 8 cm x 16 mm with Portal |
| MX1-1213 | Matrix Thermoshield™ 12 x 12 cm x 13 mm |
| MX1-1213P | Matrix Thermoshield™ 12 x 12 cm x 13 mm with Portal |
| MX1-1216 | Matrix Thermoshield™ 12 x 12 cm x 16 mm |
| MX1-1216P | Matrix Thermoshield™ 12 x 12 cm x 16 mm with Portal |
| MX1-500 | Matrix Thermoshield™ 50cc Syringe |
| MX2-500 | Matrix Thermoshield™ Hydrocarbon ONLY 50cc Syringe |
| MX1-300 | Matrix Thermoshield™ Parchment Paper |
- Highly adaptable/moldable
- Ideal for Sensitive Anatomy
- Homogenous mix of hydrocarbon & bismuth particles provide uniform radiodensity
- Can be disinfected with glutaraldehyde spray (i.e. Cidex)
- Timesaving – Constructed in approx. 20 min
- Material is non-toxic & biocompatible
- Moldable at 108° - 138°F. Rigid at 102°F
- Linear attenuation coefficient of approx. 34% of elemental lead
- Available with an open portal
- Retains its shape and thickness for the course of treatment
The Matrix Thermoshield™ patented shield is manually moldable thermoplastic material when heated in a water bath. Matrix Thermoshield™ protects healthy tissues while allowing treatment to the exact treatment field during therapy.
It may be quickly and repeatedly molded, adapted, shaped, stacked, or thinned directly on the patient at any time during therapy, thereby increasing treatment accuracy and decreasing clinical construction times.
Single patient use. Not Sterilized.
The syringe of Hydrocarbon only can be used to fabricate a backscatter electron shield on a Matrix Thermoshield™.
CT Rectal Marker
| CT RECTAL MARKER | |
|---|---|
| Rectal - Vaginal - External | |
| 460-010 | CT Rectal Marker with Anus Marker |
| 460-006 | Latex Cover for Rectal Marker |
The NON-METALLIC CT Rectal Marker is a flexible tube packed with teflon balls spaced at 1 cm intervals from centre to centre.
The Rectal Marker is used to accurately obtain both the rectum position and magnification by counting the balls. This determines the rectum location relative to the radiation field.
An adjustable anus marker can be utilized during CT simulation.
The Rectal Marker can be used in the vaginal or as an external marker.
Specifications
Sterilization: Gas
Tubing: 5/16" (8 mm) dia. x 30 cm flexible
Balls: 3/16" (5 mm) dia. spaced every cm
Anus Locator: Adjustable delrin
Super-Flex Bolus Material
| Super-Flex Bolus Material | ||
|---|---|---|
| Item | Description | |
| 486-405 | Super-Flex Bolus | 0.5cm x 30cm sq. |
| 486-410 | Super-Flex Bolus | 1.0cm x 30cm sq. |
| 486-415 | Super-Flex Bolus | 1.5cm x 30cm sq. |
| 486-420 | Super-Flex Bolus | 2.0cm x 30cm sq. |
| 486-425 | Super-Flex Bolus | 2.5cm x 30cm sq. |
| 486-430 | Super-Flex Bolus | 3.0cm x 30cm sq. |
| 486-440 | Super-Flex Bolus | 4.0cm x 30cm sq. |
| Super-Flex Bolus with Film | |
|---|---|
| Item | Description |
| 486-505 | 0.5cm x 30cm sq. |
| 486-510 | 1.0cm x 30cm sq. |
| 486-515 | 1.5cm x 30cm sq. |
| 486-520 | 2.0cm x 30cm sq. |
| 486-525 | 2.5cm x 30cm sq. |
| 486-530 | 3.0cm x 30cm sq. |
- Latex Free
- Calibrated
- Equivalent to soft tissue in radiation interaction
- Transparency allows visual beam location
- Cut with scissors and layer to increase thickness
- Unaffected by one million rads of radiation
- Non-allergenic and non-toxic
- Conforms to body contours with minimal change to thickness
- Easily cleaned with soap and water or alcohol
- 1.03 density
- 1.02 electron density
Super-Flex material is CALIBRATED with photons and electrons in the energy range greater than 1 MeV. This assures accurate measurement and administration of the prescribed dose of radiation. Close quality control of the thickness promotes quality results time after time. The materials do not flow, creep, or sag out of shape and may be cut with scissors to fit the patient and layered as required to build up the thickness.
Ultrasound
Super-Flex is used because of its excellent ability to conform to body surfaces. As a transducer array stand off it makes a smoother surface and acts as a separator in near-surface imaging, making the imaged objects appear clearer.
Radiation Therapy
In the energy range greater than 1 MeV using photons or electrons, Super-Flex calibrations curves are available. Calibration allows greater accuracy in dosimetry and in therapy. In use, a bolus is placed over or around the irradiated area to provide build-up, energy reduction/attenuation, or extra scattering. Super-Flex conforms well to most human surfaces without significant change in thickness. The soft tissue equivalence density, approximately 1.03, results from its chemical composition which is mostly carbon, oxygen, and hydrogen.
Miscellaneous
Super-Flex is nearly the ideal material for use as the matrix for test-object phantoms. The material can also be used as missing tissue or as internal heterogeneity compensation in x-ray imaging techniques that require the compensator to be on or near the patient.
Superflab Bolus Material
| Superflab Bolus Material | ||
|---|---|---|
| Specific Gravity: 1.02 | ||
| Item | Description | |
| 486-302 | Superflab Bolus | 0.2 cm x 30 cm sq. |
| 486-303 | Superflab Bolus | 0.3 cm x 30 cm sq. |
| 486-305 | Superflab Bolus | 0.5 cm x 30 cm sq. |
| 486-310 | Superflab Bolus | 1.0 cm x 30 cm sq. |
| 486-315 | Superflab Bolus | 1.5 cm x 30 cm sq. |
| 486-320 | Superflab Bolus | 2.0 cm x 30 cm sq. |
| 486-325 | Superflab Bolus | 2.5 cm x 30 cm sq. |
| 486-330 | Superflab Bolus | 3.0 cm x 30 cm sq. |
| 486-340 | Superflab Bolus | 4.0 cm x 30 cm sq. |
- Latex Free
- Conforms to patient's contour
- Tissue equivalent
- Flexible, will not dry out
This material is a synthetic oil gel with a specific gravity of 1.02. It is based on vinyl plastic containing a large amount of di-isodecyl phthalate. It contains only materials approved by the FDA for human contact.
Superflab comes in thicknesses which provide maximum dose buildup for relevant photon energies. It does not suffer inelastic strain for normal stresses and does not have to be bagged or wrapped in plastic film to maintain shape. It can be washed with soap and water followed by an application of talcum powder or it can be wrapped.
Since Superflab has both an electron build-up characteristic and a density closer to that of water than polystyrene, it is widely used in radiotherapy clinics. Superflab is not tissue equivalent at diagnostic x-ray energies.