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Purpose: We describe the creation of computational models lung pathologies indicative COVID-19 disease. The are intended for use in virtual clinical trials (VCT) task-specific optimization chest x-ray (CXR) imaging. Approach: Images patients confirmed by computed tomography were used to segment areas increased attenuation lungs, all compatible with ground glass opacities and consolidations. Usi...

Background: Since tumors located in thorax region of body mainly move due to respiration, in the modern radiotherapy, there have been many attempts such as; external markers, strain gage and spirometer represent for monitoring patients’ breathing signal. With the advent of fluoroscopy technique, indirect methods were proposed as an alternative approach to extract patients’ breathing signals...

a 50-year-old male underwent a check-up for an insurance company. chest x-ray revealed a large ball-like lesion in the posterior mediastinum. the finding was confirmed by computed tomography (ct) scan (figure 1). the patient was referred to our center, where he had a successful mass removal surgery (figure 2). pathology identified the mass as neurinoma.

background: chest trauma is responsible for 50% of deaths due to trauma. this kind of death usually occurs immediately after the trauma has occurred. objectives: the aim of this study was to evaluate the various aspects of chest trauma in patients admitted to two main trauma centers located in the isfahan province, iran. conclusions: since hemothorax is the main complication of blunt chest trau...

conclusions performing the routine chest ct in high-energy blunt trauma patients (with a mean injury severity of 9), although leading to the diagnosis of some occult injuries, has no impact on the outcome and does not decrease the in-hospital stay and icu admission time. it seems that performing the routine chest ct in these patients may lead to overtreatment of nonsignificant injuries. the dec...

background: in myocardial perfusion spect imaging, images are degraded by photon attenuation, the distance-dependent collimator, detector response and photons scatter. filters greatly affect quality of nuclear medicine images materials and methods: a phantom simulating heart left ventricle was built. about 1mci of 99mtc was injected into the phantom. images were taken from this phantom. some fi...

The ability to create real-time images of pulmonary function is highly desirable in many clinical situations. For example, information on air delivery vital for patients the intensive care unit (ICU) who are going through mechanical ventilation due respiratory failure. functional obtained from imaging can be used provide early warnings developing pathologies real time, reducing complications an...

The position and orientation of the thorax and head of flying blowflies (Calliphora vicina) were measured using small sensor coils mounted on the thorax and head. During flight, roll movements of the thorax are compensated by counter rolls of the head relative to the thorax. The yaw turns of the thorax (thorax saccades) are accompanied by faster saccades of the head, starting later and finishin...