Background: CT is a diagnostic imaging modality giving higher patient dose in comparison with other radiological procedures, so the calculation of organ dose in CT exams is very important. While methods to calculate the effective dose have been established (ICRP 26 and ICRP 60), they depend heavily on the ability to estimate the dose to radiosensitive organs from the CT procedure. However, dete...

In recent years it has been possible to examine selective attention as an organ system with its own functional anatomy, circuitry and cellular structure. Although information remains incomplete on each of these levels, this view has already altered our knowledge concerning many perplexing problems in cognitive science and allowed important insights into neurological and psychiatric disorders of...

background focused assessment with sonography for trauma (fast) is a precise, non-invasive, and low cost method to assess free abdominal fluid in trauma patients. objective this study assessed the relationship between free intra-abdominal fluid and organ injury in blunt abdominal trauma and designed a scoring system based on fast. patients and methods a total of 200 patients with blunt abdomina...

some crops have been observed to posses effects of allelopathic type. it would be interesting and useful as well to study these plants' allelopathic effects on other crop plants, particularly in rotation and intercropping. so, in this study, the allelopathic potential of cucumber organs' extract on seedling growth of cucumber, eggplant, pepper, and tomato was evaluated using a randomi...

As every high-school graduate knows, animals are classified into two large groups ñ those that have vertebrae and those that do not. What every high-school graduate should also know (but probably doesnít) is that the vertebrates are further divided into jawless (Agnatha) and jawed (Gnathostomata). The jawed vertebrates are distinguished not only by the possession of jaws, but also by a suite of...

A relevant research field is the development of closed-loop combinations of neural tissue and robotics, such as animats and hybrots [4]. As such, a proposed framework for a simple, modular synthetic organism will be evaluated. A closed-loop circulatory system would be used to sustain a “brain” via homeostatic maintenance of a balance of essential nutrients and waste removal. The modular “brains...

introduction: the purpose of this study was to compare estimation of radiation absorbed doses to patients following bone scans with technetium-99m-labeled methylene diphosphonate (mdp) with the estimates given in mirdose software. methods: in this study, each patient was injected 25 mci of 99m tc-mdp. whole-body images from thirty patients were acquired by gamma camera at 10, 60, 90, 180 minute...

background and aims : adverse drug reactions (adrs) are one of the major leading causes of death in the world. this study was designed and conducted because of the importance of adverse events in the cancer treatment setting and regarding this issue there is no study exploring adverse reactions of acute hematologic malignancy chemotherapy in iranian population. methods : this was a prospective,...