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Accuracy of Patient Age Estimation from Frontal Chest Radiographs of Adult Patients
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作者 Sarah Chibane Alexandre Semionov +8 位作者 John Kosiuk Josephine Pressacco Karl Sayegh Gianni Giancaspro Aline khatchikian Paul S. Benvenuto Joshua Chin Sukhmanjit Ghumman Abdulrahman Maimani 《Open Journal of Radiology》 2022年第2期37-48,共12页
Objective: The objective of this study is to evaluate the accuracy of patient age estimation from frontal chest radiographs of adult patients. Methods: 195 posterior-anterior chest radiographs without significant abno... Objective: The objective of this study is to evaluate the accuracy of patient age estimation from frontal chest radiographs of adult patients. Methods: 195 posterior-anterior chest radiographs without significant abnormalities were shown to 5 staff radiologists and 6 radiology residents, who were asked to provide their estimates of patient age to the nearest decade. Real patient age distribution ranged from 16 to 91 years of age. Results: On average, correct estimate of patient age decade was made in 22% of cases. Staff radiologists were overall more accurate in their estimations compared to residents. Best accuracy was achieved by the radiologist with the most years of clinical experience, however overall accuracy did not tend to correlate with number of years in practice for staff, nor years of post-graduate training for residents. Overall, patient age was most often overestimated. The least accurate estimates were made for patients younger than 20 years and older than 90. Best accuracy was seen for patients between 50 and 70 years of age. For patients between 20 and 90 years of age, overall estimates were within 11 - 15 years of their true age. There was no significant difference in accuracy of age estimation between radiographs of women and men. Conclusions: Average rate of correct age estimation to the nearest decade from normal frontal chest radiographs in our study was 22%. Staff radiologists were more accurate than radiology residents. Best estimates were made for middle-aged patients, and worst for extremes of age. 展开更多
关键词 Age Estimation Chest Radiography Radiology Residents
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含油火成岩的测井评价 被引量:1
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作者 A.khatchikian 洪雁 向勇 《天然气勘探与开发》 1994年第4期40-48,共9页
由于含油火成岩矿物组成的复杂性.用测井曲线很难评价出这类岩石的孔隙度、含水饱和度及粘土含量。我们已在阿根廷西部油井中研究了流纹岩、流纹岩质凝质岩、安山岩、英安岩、沸石质凝质岩、辉绿岩及玄武岩的测井响应,并把它们与其它地... 由于含油火成岩矿物组成的复杂性.用测井曲线很难评价出这类岩石的孔隙度、含水饱和度及粘土含量。我们已在阿根廷西部油井中研究了流纹岩、流纹岩质凝质岩、安山岩、英安岩、沸石质凝质岩、辉绿岩及玄武岩的测井响应,并把它们与其它地区的观测值做了比较。几个油田实例表明在复杂的岩性程序中可以利用这些曲线响应来做出全面的评价。 展开更多
关键词 交绘图 测井评价 安山凝灰岩 流纹岩质凝灰岩 沸石凝灰岩 辉绿岩 含水饱和度 声波孔隙度 英安岩 安山岩
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