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PURPOSE To develop and test a novel method for coil placement in interleaved transcranial magnetic stimulation (TMS)/functional MRI (fMRI) studies. MATERIALS AND METHODS Initially, a desired TMS coil position at the subject's head is recorded using a neuronavigation system. Subsequently, a custom-made holding device is used for coil placement inside the(More)
When skin cancer near the eye is irradiated, a corneal shield is placed between the lids and globe to protect ocular structures. The effectiveness of the shield was evaluated with 250 kVp x-ray and 6-20 MeV electron beams. To simulate the clinical situation, a face phantom was constructed out of solid pieces of water-equivalent epoxy. In the region of the(More)
BACKGROUND When tangential radiation beams are used in patients with breast cancer after breast-conserving surgery, the amount of lung included in the radiation field varies because of patient anatomy and treatment technique. The question of how much lung tissue can be irradiated incidentally without acute or late complications requires quantitative study.(More)
An acrylic head phantom was irradiated during a computed tomographic scan with four commercial scanners. Measurements of the spatial distribution of the radiation dose on the surface and internal to the phantom were performed for the scan plane and the scattered beam at various distances from the scan plane. The surface scatter dose was found to be(More)
Platelet concentrates were prepared by plateletpheresis using discontinuous flow centrifugation. Platelet units were stored in PL-146 bags of 300 ml and 2,000 ml capacity, and in vitro measures helpful in predicting platelet viability were compared. Storage in bags of 300 ml capacity led to significant fall in pH, decreased recovery from osmotic stress, and(More)
BACKGROUND Field calculations for transcranial magnetic stimulation (TMS) are increasingly implemented online in neuronavigation systems and in more realistic offline approaches based on finite-element methods. They are often based on simplified and/or non-validated models of the magnetic vector potential of the TMS coils. OBJECTIVE To develop an approach(More)
reactive arene oxides (10, i i , 21). Jerina and Daly (12) and Jerina et al. (13) have proposed a theory which predicts that ‘‘bay-region' ‘diol-epoxides of PAH are important in their car cinogenic activity. A bay region occurs in PAH when an angu larly fused benzo ring is present (Chart 1). There is now direct evidence from tumorigenicity studies(More)
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