da Silva Francisco Carlos, Nascentes Gabriel Antonio, Meneses Antonio Carlos Oliveira, Correia Filho Dalmo
Universidade Federal do Triângulo Mineiro (UFTM), Uberaba, MG, Brazil.
Radiol Bras. 2019 Jan-Feb;52(1):7-11. doi: 10.1590/0100-3984.2017.0176.
To assess the percent agreement between diagnostic imaging modalities for the evaluation of lymphadenopathies in HIV-infected/AIDS patients.
This was an open, comparative, prospective study of diagnostic imaging methods for lymphadenopathy evaluation. We evaluated 30 patients (19 men and 11 women). All underwent ultrasound and computed tomography (CT). Twenty of the patients also underwent magnetic resonance imaging (MRI). We determined the percent agreement between two examiners using the various imaging methods to evaluate lymphadenopathies.
CT had the highest percent agreement, at 93.3%, with a kappa coefficient of 0.85, corresponding to 28 of the 30 examinations. When we compared the percent agreement between the two examiners and between CT and ultrasound, examiner 1 had an observed rate of 80.0%, with a kappa of 0.49, corresponding to 24 of the 30 examinations, whereas examiner 2 had a rate of 70.0%, with a kappa of 0.31, corresponding to 21 of the 30 examinations. Between MRI and CT, the percent agreement for examiner 1 was 50.0%, with a kappa of -0.18, corresponding to 10 of the 20 examinations, whereas that for examiner 2 was 85.0%, with a kappa of 0.69, corresponding to 17 of the 20 examinations. For MRI and ultrasound, examiner 1 had a percent agreement of 70.0%, with a kappa of 0.20, corresponding to 14 of the 20 examinations, and examiner 2 had a percent agreement of 75.0%, with a kappa of 0.38, corresponding to 15 of the 20 examinations.
This study indicates that intermethod agreement is highly dependent on the way in which the research is conducted, rather than on the level of experience of the examiner.
评估用于评估HIV感染/艾滋病患者淋巴结病的诊断成像方式之间的一致性百分比。
这是一项关于淋巴结病评估的诊断成像方法的开放性、对比性、前瞻性研究。我们评估了30例患者（19名男性和11名女性）。所有人均接受了超声和计算机断层扫描（CT）检查。其中20例患者还接受了磁共振成像（MRI）检查。我们确定了两名检查人员使用各种成像方法评估淋巴结病之间的一致性百分比。
CT的一致性百分比最高，为93.3%，kappa系数为0.85，对应30次检查中的28次。当我们比较两名检查人员之间以及CT与超声之间的一致性百分比时，检查人员1的观察率为80.0%，kappa为0.49，对应30次检查中的24次，而检查人员2的观察率为70.0%，kappa为0.31，对应30次检查中的21次。在MRI和CT之间，检查人员1的一致性百分比为50.0%，kappa为-0.18，对应20次检查中的10次，而检查人员2的一致性百分比为85.0%，kappa为0.69，对应20次检查中的17次。对于MRI和超声，检查人员1的一致性百分比为70.0%，kappa为0.20，对应20次检查中的14次，检查人员2的一致性百分比为75.0%，kappa为0.38，对应20次检查中的15次。
本研究表明，方法间的一致性高度依赖于研究开展的方式，而非检查人员的经验水平。
