BACKGROUND Medical doctors who perform C-arm fluoroscopy-guided procedures are exposed to X-ray radiation. Therefore, radiation-protective shields are recommended to protect these doctors from radiation. For the past several years, these protective shields have sometimes been used without regular inspection. The aim of this study was to investigate the degree of damage to radiation-protective s...

1Wildlife and Ecology Unit, Veterinary Genetics Laboratory, University of California, One Shields Avenue, Davis, CA 95616, USA 2Section of Evolution and Ecology, University of California, One Shields Avenue, Davis, CA 95616, USA 3Department of Biology, University of Missouri – St Louis, St. Louis, MO 63121, USA 4Department of Zoology, University of Florida, PO Box 118525, Gainesville, FL 32611,...

Introduction: In radiation therapy centers across Iran, protection of normal tissues is usually accomplished by either Cerrobend or lead block shielding. In this study, the influence of these two shielding methods on central axis dose distribution of photon beam a Cobalt unit was investigated in clinical conditions. Materials and Methods: All measurements were performed for 60Co γ-ray beams an...

4. Jakobiec FA, Buckman G, Zimmerman LE, et al. Metastatic melanoma within and to the conjunctiva. Ophthalmology. 1989;96(7):999-1005. 5. Kiratli H, Shields CL, Shields JA, De Potter P. Metastatic tumours to the conjunctiva: report of ten cases. Br J Ophthalmol. 1996;80(1):5-8. 6. Kwapiszeski BR, Savitt ML. Conjunctival metastasis from a cutaneous melanoma as the initial sign of dissemination. ...

nesh, Kaliki, and Shields) and Pediatric Ophthalmology and Ocular Genetics Services (Drs Ganesh and Levin), Wills Eye Institute, Thomas Jefferson University, Philadelphia, Pennsylvania. Correspondence: Dr Shields, Ocular Oncology Service, Wills Eye Institute, 840 Walnut St, Ste 1440, Philadelphia, PA 19107 ([email protected]). Author Contributions: Dr Shields had full access to ...

The oxygen permeability (Dk) of ten 24-hr collagen shields was measured directly by polarographic methodology at approximately 2 hr of hydration. Edge and boundary effects were included in the calculations. Dk was found to be approximately 26 x 10(-11) cm ml O2/sec ml mmHg at 35 degrees C. Mean water content of the shields was 65.7% (SD = 1.0%) as measured by a hand refractometer. Therefore, th...

PURPOSE To evaluate the impact of common radiation-shielding strategies, used alone and in combination, on scattered dose to the fluoroscopy operator's eye. MATERIALS AND METHODS With an operator phantom positioned at the groin, upper abdomen, and neck, posteroanterior low-dose fluoroscopy was performed at the phantom patient's upper abdomen. Operator lens radiation dose rate was recorded wit...

Face shields are personal protective equipment devices that are used by many workers (e.g., medical, dental, veterinary) for protection of the facial area and associated mucous membranes (eyes, nose, mouth) from splashes, sprays, and spatter of body fluids. Face shields are generally not used alone, but in conjunction with other protective equipment and are therefore classified as adjunctive pe...