The influence of various parameters in images by digital radiography

VernacularTitle:不同部位数字化放射成像的参数调节
Author: Xingjie DENG
Publication Type:Journal Article
Keywords: Cineradiology; Rodiology information systems
From: Chinese Journal of Primary Medicine and Pharmacy 2009;16(8):1379-1380
CountryChina
Language:Chinese
Abstract: Objective To evaluate the influence of various parameters in images by digital radiography (DR).Methods Analysis of exposure parameters and the parameters of various parts of the image in 1000 cases of chest images by DR.Results The 90kV group of exposure time[(13.05 ±4.92)ms]were greater than 125kV group [(7.72 ±2.65)ms]and 150kV group[(5.65 ±1.81)ms](t =2.245.P ＜0.05;t =2.812,P＜0.01);90kV group [(0.86±0.29)cGy ? cm2](t =2.311 ,P ＜0.05);90kV group of Conversion factor(CF)14.8 ±4.52 lower than the l25kV group(19.5±5.48)and 150kV group(22.9 ±6.44)(t =2.298,t =2.301 ,P ＜0.05);The exposure of patients significantly related to Body Mass Index(BMI(r = 0.678 ,P ＜0.05);The average window of rib in 2018 were higher than left ventricular after lung markings,hilar structures、thoracic tracheal and protuberans(1584,1850,1554 and 1476)(t = 2.114,t= 2.241,t= 2.295,t= 2.304,both P＜0.05);The average Wide Window of rib in 2677 were higher than the trachea and thoracic protuberans(2383 and 2128);The 1000 of rib clearly were significantly higher than 754 cases of thoracic(t = 2.214,P ＜ 0.05).Conclusion The appropriate parameters can be more satisfied with the images.