Jerzy Ryman

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UNLABELLED The bremsstrahlung component of the decay scheme of beta emitters has been traditionally ignored in internal dosimetry calculations. METHODS We have estimated the radiation dose from the bremsstrahlung component of the decay scheme of 90Y as a function of distance from a point source in a liquid medium and to body organs from distributed(More)
Wireless sensor networks have attracted much research effort in the past five years. With TinyOS, there exists a widely used, microthreaded operating system targeted for single processor sensor nodes. It requires only minimal processing and memory resources. Many research activities in the wireless sensor area focus on the design of efficient protocols in(More)
OBJECTIVES To evaluate the duration of anticoagulation treatment with warfarin sodium before elective DC-cardioversion and to identify clinical variables predicting short-term versus long-term waiting times. DESIGN Retrospective. SUBJECTS Patients with a known start date for warfarin sodium, a known duration of atrial fibrillation (AF) and who underwent(More)
The unabridged data used in preparing ICRP Publication 38 (1983) and a monograph of the Medical Internal Radiation Dose (MIRD) Committee (Weber et al. 1989) are now available in electronic form. The "ICRP38 collection" contains data on the energies and intensities of radiations emitted by 825 radionuclides (those in ICRP Publication 38 plus 13 from the MIRD(More)
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