Kodama Naoki, Loc Thai Van, Hai Phan Thanh, Cong Nguyen Van, Katsuhara Shinsuke, Kasai Satoshi, Sheikh Aziz
Department of Radiological Technology, Faculty of Medical Technology, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata city, Niigata 950-3198, Japan.
Medic Medical Center, 254 Hoa Hao st. ward 4th. 10 dist., Hochiminh City, Viet Nam.
Clin Imaging. 2018 Sep-Oct;51:196-201. doi: 10.1016/j.clinimag.2018.05.021. Epub 2018 May 30.
To assess the effectiveness of bone suppression imaging (BSI) in the diagnosis of tuberculosis from chest radiographs (CXRs) in Vietnam.
A total of 97 images (50 tuberculosis and 47 normal) comprised the dataset for this observer study with unanimous consensus of a panel of 3 expert radiologists. The participants were 9 Vietnamese radiologists (6 chest radiologists and 3 non-chest radiologists). Participants recorded their confidence levels regarding the presence of tuberculosis after reading a standard chest radiograph directly first and then after BSI processing. Receiver operating characteristic (ROC) analysis was used to evaluate participant performance. In addition, the change in participants' decision regarding the presence or absence of tuberculosis after BSI processing was recorded for each patient. Improvements in sensitivity and specificity were calculated.
The average AUC for non-chest radiologists improved from 0.882 without BSI to 0.933 with BSI (P = 0.048). In addition, BSI improved sensitivity by 10.0% whereas specificity decreased by 2.8% among non-chest radiologists.
Using BSI improved the accuracy of tuberculosis diagnosis from CXRs, particularly by non-chest radiologists.
评估骨抑制成像（BSI）在越南胸部X光片（CXR）诊断肺结核中的有效性。
本观察者研究的数据集共包含97张图像（50张肺结核图像和47张正常图像），由3名放射科专家组成的小组达成一致共识。参与者为9名越南放射科医生（6名胸部放射科医生和3名非胸部放射科医生）。参与者在直接阅读标准胸部X光片后以及进行BSI处理后，记录他们对肺结核存在情况的置信水平。采用受试者操作特征（ROC）分析来评估参与者的表现。此外，记录每位患者在进行BSI处理后参与者对肺结核存在与否的判断变化。计算敏感性和特异性的改善情况。
非胸部放射科医生的平均曲线下面积（AUC）从无BSI时的0.882提高到有BSI时的0.933（P = 0.048）。此外，在非胸部放射科医生中，BSI使敏感性提高了10.0%，而特异性降低了2.8%。
使用BSI提高了通过CXR诊断肺结核的准确性，尤其是对于非胸部放射科医生。
