BACKGROUND:Few contemporary studies have assessed physicians’knowledge of radiation exposure associated with common imaging studies,especially in trauma care.The purpose of this study was to assess the knowledge of p...BACKGROUND:Few contemporary studies have assessed physicians’knowledge of radiation exposure associated with common imaging studies,especially in trauma care.The purpose of this study was to assess the knowledge of physicians involved in caring for trauma patients regarding the effective radiation doses of musculoskeletal(MSK)imaging studies routinely utilized in the trauma setting.METHODS:An electronic survey was distributed to United States orthopaedic surgery,general surgery,and emergency medicine(EM)residency programs.Participants were asked to estimate the radiation dose for common imaging modalities of the pelvis,lumbar spine,and lower extremity,in terms of chest X-ray(CXR)equivalents.Physician estimates were compared to the true effective radiation doses.Additionally,participants were asked to report the frequency of discussing radiation risk with patients.RESULTS:A total of 218 physicians completed the survey;102(46.8%)were EM physicians,88(40.4%)wereorthopaedicsurgeons,and28(12.8%)weregeneralsurgeons.Physicians underestimated the effective radiation doses of nearly all imaging modalities,most notably for pelvic computed tomaography(CT)(median 50 CXR estimation vs.162 CXR actual)and lumbar CT(median 50 CXR estimation vs.638 CXR actual).There was no difference between physician specialties regarding estimation accuracy(P=0.133).Physicians who regularly discussed radiation risks with patients more accurately estimated radiation exposure(P=0.007).CONCLUSION:The knowledge among orthopaedic and general surgeons and EM physicians regarding the radiation exposure associated with common MSK trauma imaging is lacking.Further investigation with larger scale studies is warranted,and additional education in this area may improve care.展开更多
The level of cadmium in soil in Taiyuan district has beenproved to be higher than that of the background detected byenvironmental quality inspection.This paper will provide some informations about the MN inhuman lymph...The level of cadmium in soil in Taiyuan district has beenproved to be higher than that of the background detected byenvironmental quality inspection.This paper will provide some informations about the MN inhuman lymphocytes induced hy CdCl<sub>2</sub> with展开更多
目的分析肋骨DR摄影管电压对影像质量和辐射剂量的影响,探讨合适的管电压。方法对2016年7—10月来该院做肋骨DR摄影的成年患者90例进行分组,随选以65 k V自动曝光控制(以下简称自控)已摄影的正位肋骨片30例,随选30例胸外伤患者以80 k V...目的分析肋骨DR摄影管电压对影像质量和辐射剂量的影响,探讨合适的管电压。方法对2016年7—10月来该院做肋骨DR摄影的成年患者90例进行分组,随选以65 k V自动曝光控制(以下简称自控)已摄影的正位肋骨片30例,随选30例胸外伤患者以80 k V用肋骨窗自控拍摄正位肋骨片,随选30例非外伤患者以100 k V用肋骨窗自控拍摄常规胸片,对前述3组的影像质量和曝光量(m As)进行比较分析。结果 65 k V组肋骨显示较好但曝光量较大(14.3~56.2 m As),80 k V组能使肋骨较好地显示且曝光量较小(3.4~12.6 m As),其曝光量(m As)比65 k V组减少约69.2%,100 k V组肋骨显示欠佳但曝光量最小(1.2~3.2 m As),3组比较差异有统计学意义(P<0.05),80 k V组为最佳选择。结论可选择75~85 k V肋骨窗自控进行胸部肋骨摄影,既能保证影像质量,又能大大降低受检者的曝光量。展开更多
Objective To investigate the expressions of receptor for advanced glycation endproducts(RAGE)and nuclear factorκB(NF-κB)in brain hippocampus of rat with chronic fluorosis,and to reveal the mechanism of brain damage ...Objective To investigate the expressions of receptor for advanced glycation endproducts(RAGE)and nuclear factorκB(NF-κB)in brain hippocampus of rat with chronic fluorosis,and to reveal the mechanism of brain damage resulted from chronic fluorosis.Methods Sixty clean grade SD rats were randomly divided to three groups(20 rats in each group,10 female and 10 male)fed with different contents of fluoride,control group with normal tap-water(【0.5 mg/L fluoride),展开更多
文摘BACKGROUND:Few contemporary studies have assessed physicians’knowledge of radiation exposure associated with common imaging studies,especially in trauma care.The purpose of this study was to assess the knowledge of physicians involved in caring for trauma patients regarding the effective radiation doses of musculoskeletal(MSK)imaging studies routinely utilized in the trauma setting.METHODS:An electronic survey was distributed to United States orthopaedic surgery,general surgery,and emergency medicine(EM)residency programs.Participants were asked to estimate the radiation dose for common imaging modalities of the pelvis,lumbar spine,and lower extremity,in terms of chest X-ray(CXR)equivalents.Physician estimates were compared to the true effective radiation doses.Additionally,participants were asked to report the frequency of discussing radiation risk with patients.RESULTS:A total of 218 physicians completed the survey;102(46.8%)were EM physicians,88(40.4%)wereorthopaedicsurgeons,and28(12.8%)weregeneralsurgeons.Physicians underestimated the effective radiation doses of nearly all imaging modalities,most notably for pelvic computed tomaography(CT)(median 50 CXR estimation vs.162 CXR actual)and lumbar CT(median 50 CXR estimation vs.638 CXR actual).There was no difference between physician specialties regarding estimation accuracy(P=0.133).Physicians who regularly discussed radiation risks with patients more accurately estimated radiation exposure(P=0.007).CONCLUSION:The knowledge among orthopaedic and general surgeons and EM physicians regarding the radiation exposure associated with common MSK trauma imaging is lacking.Further investigation with larger scale studies is warranted,and additional education in this area may improve care.
文摘The level of cadmium in soil in Taiyuan district has beenproved to be higher than that of the background detected byenvironmental quality inspection.This paper will provide some informations about the MN inhuman lymphocytes induced hy CdCl<sub>2</sub> with
文摘目的分析肋骨DR摄影管电压对影像质量和辐射剂量的影响,探讨合适的管电压。方法对2016年7—10月来该院做肋骨DR摄影的成年患者90例进行分组,随选以65 k V自动曝光控制(以下简称自控)已摄影的正位肋骨片30例,随选30例胸外伤患者以80 k V用肋骨窗自控拍摄正位肋骨片,随选30例非外伤患者以100 k V用肋骨窗自控拍摄常规胸片,对前述3组的影像质量和曝光量(m As)进行比较分析。结果 65 k V组肋骨显示较好但曝光量较大(14.3~56.2 m As),80 k V组能使肋骨较好地显示且曝光量较小(3.4~12.6 m As),其曝光量(m As)比65 k V组减少约69.2%,100 k V组肋骨显示欠佳但曝光量最小(1.2~3.2 m As),3组比较差异有统计学意义(P<0.05),80 k V组为最佳选择。结论可选择75~85 k V肋骨窗自控进行胸部肋骨摄影,既能保证影像质量,又能大大降低受检者的曝光量。
文摘Objective To investigate the expressions of receptor for advanced glycation endproducts(RAGE)and nuclear factorκB(NF-κB)in brain hippocampus of rat with chronic fluorosis,and to reveal the mechanism of brain damage resulted from chronic fluorosis.Methods Sixty clean grade SD rats were randomly divided to three groups(20 rats in each group,10 female and 10 male)fed with different contents of fluoride,control group with normal tap-water(【0.5 mg/L fluoride),
