نتایج جستجو برای: آشکارساز 39 cr
تعداد نتایج: 142907 فیلتر نتایج به سال:
Introduction: Smokers and non-smokers are at the risk of developing lung cancer when exposed to alpha rays as a result of the relatively low levels of radium and radon that may be present in different tobacco species. There is a great interest in studies and research on the radionuclides in narghile tobacco emitting alpha particles to know the relationship between smok...
BACKGROUND Cardiac rehabilitation (CR) is of proven benefit for patients with coronary artery disease. Patients who successfully complete CR have a statistically significant reduction in the risk of fatal myocardial infarction (MI) and all-cause mortality. Peripheral arterial disease (PAD) is common in patients with coronary artery disease. OBJECTIVES We investigated whether PAD prevents the ...
OBJECTIVES This study analyzed the effect of the beta(1)-selective beta-blocker metoprolol succinate controlled release/extended release (CR/XL) once daily on mortality, hospitalizations and tolerability in patients with severe heart failure. BACKGROUND There continues to be resistance to the incorporation of beta-blockers into clinical care, largely due to concerns about their benefit in pat...
We evaluated the effectiveness of high dose rate (HDR) endobronchial irradiation for palliation of malignant airway obstruction. Between May 1989 and February 1992, 39 patients were treated in our department. Thirty-two patients (82 percent) had primary lung neoplasms and 7 (18 percent) had metastatic disease. Thirty-three patients (85 percent) had prior external irradiation (either alone or in...
We report on the absolute calibration of amicro channel plate (MCP) detector, installed asdetector in a Thomson parabola spectrometer. Thecalibration delivers the relation between a registeredcount numbers in the CCD camera (on which the MCPphosphor screen is imaged) as a result of the impact ofan ion beam onto the MCP. The particle response ofthe whole detection...
BACKGROUND Endomyocardial biopsy (EMB) is the gold standard method for the diagnosis of cellular rejection (CR) after heart transplantation (HT). OBJECTIVE To test the hypothesis that tissue Doppler imaging (TDI) could detect CR > 3A and add diagnostic information compared to conventional Doppler. METHODS Fifty-four HT patients underwent 129 EMB and a TDI echocardiographic study within 24 h...
یکی از مهمترین ابزار در طیف سنجی اشعه گاما، آشکارساز hpge می باشد. مفهوم آشکارساز نقطه ای مجازی برای آشکارساز ge(li) مطرح شد. براساس این مفهوم، نقطه ای درون آشکارساز ژرمانیومی وجود دارد که می تواند به عنوان آشکارساز نقطه ای مجازی همه واکنش ها را میزبانی کند. اگر واقعاً چنین نقطه ای وجود داشته باشد که بتواند همانند زمانی که کل حجم آشکارساز در نظر گرفته می شود، پاسخگو باشد، ملاحظات هندسی مورد است...
Peripheral T-cell lymphomas (PTCL) have suboptimal outcomes using conventional CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone) chemotherapy. The anti-folate pralatrexate, the first drug approved for patients with relapsed/refractory PTCL, provided a rationale to incorporate it into the front-line setting. This phase 2 study evaluated a novel front-line combination whereby cyclopho...
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