نتایج جستجو برای: 9390 percent in 1176 cm
تعداد نتایج: 16989362 فیلتر نتایج به سال:
In the present work, we investigated the accuracy of the electron pencil-beam redefinition algorithm (PBRA) in calculating central-axis percent depth dose in water for rectangular fields. The PBRA energy correction factor C(E) was determined so that PBRA-calculated percent depth dose best matched the percent depth dose measured in water. The hypothesis tested was that a method can be implemente...
BACKGROUND Chronic kidney disease (CKD) is one of the most serious public health problems. The increasing prevalence of CKD in developed and developing countries has led to a global epidemic. The hypothesis proposed is that patients undergoing dialysis would experience a marked negative influence on physiological variables of sleep and autonomic nervous system activity, compromising quality of ...
The purpose of this study was to evaluate the diagnostic yield of flexible sigmoidoscopy when performed as a routine procedure in asymptomatic patients over the age of 40 being referred for a complete physical examination. The preliminary results of this ongoing program are presented together with the diagnostic yield in 408 patients with symptoms and signs suggestive of colorectal disease who ...
Introduction: On the basis of percent depth dose (PDD) calculation, the application of dosimetry in radiotherapy has an important role to play in reducing the chance of tumor recurrence. The aim of this study is to introduce a new formula for calculating the centeral axis percent depth doses of Cobalt-60 beam. Materials and Methods: In the present study, based on ...
PURPOSE Few reports on the long-term functional outcome of colonic J-pouch reconstruction have been published, and data comparing J-pouch and straight reconstruction are contradictory. This prospective study compares the functional outcome of colonic J-pouch and straight anastomosis five years after low anterior resection for rectal cancer. METHODS Functional outcome was compared in 46 patien...
BACKGROUND The aim of this study was to identify corresponding body mass index (BMI) and waist circumference cut-offs for equivalent levels of insulin sensitivity in a Middle Eastern immigrant population compared with native Swedes. METHODS Citizens of Malmö, Sweden aged 30 to 75 years, who were born in Iraq or Sweden, were in 2010-2012 invited to participate in a health examination including...
We reviewed the 639 cases of early gastric cancer from nation-wide 16 medical centers. The proportion of early gastric cancer among surgically resected gastric carcinoma comprised 6 to 12 percent. Male to female ratio was 1.7 to 1 with male preponderance. Mean ages of the early gastric cancer was 49.0 years and most prevalent ages was 5th decade. Macroscopically type IIc was most prevalent, rea...
Electromagnetic navigation bronchoscopy Diagnosing peripheral parenchymal lesions less than 2 cm in diameter is a common challenge for bronchoscopists. Such lesions can be difficult to visualize with fluoroscopy, which also does not delineate the airways leading to the lesion. The diagnostic yield of flexible bronchoscopy for lesions less than 2 cm has been reported to be 14 percent for lesions...
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