Department of Radiology, Komaki City Hospital, 1-20 Johbu, Komaki, 485-8520, Aichi, Japan.
Nagoya Jhohoku Radiology Clinic, Nagoya, Japan.
Jpn J Radiol. 2019 Jun;37(6):437-448. doi: 10.1007/s11604-019-00826-2. Epub 2019 Mar 19.
To determine whether functional near-infrared spectroscopy (fNIRS) allows monitoring fatigue in radiologists during prolonged image interpretation.
Nine radiologists participated as subjects in the present study and continuously interpreted medical images and generated reports for cases for more than 4 h under real clinical work conditions. We measured changes in oxygenated hemoglobin concentrations [oxy-Hb] in the prefrontal cortex using 16-channel fNIRS (OEG16ME, Spectratech) every hour during the Stroop task to evaluate fatigue of radiologists and recorded fatigue scale (FS) as a behavior data.
Two subjects showed a subjective feeling of fatigue and an apparent decrease in brain activity after 4 h, so the experiment was completed in 4 h. The remaining seven subjects continued the experiment up to 5 h. FS decreased with time, and a significant reduction was observed between before and the end of image interpretation. Seven out of nine subjects showed a minimum [oxy-Hb] change at the end of prolonged image interpretation. The mean change of [oxy-Hb] at the end of all nine subjects was significantly less than the maximum during image interpretation.
fNIRS using the change of [oxy-Hb] may be useful for monitoring fatigue in radiologists during image interpretation.
确定功能近红外光谱（fNIRS）是否可用于监测长时间图像解释期间放射科医生的疲劳。
9 名放射科医生作为受试者参加了本研究，他们在实际临床工作条件下连续 4 小时以上不间断地解释医学图像并生成报告。我们使用 16 通道 fNIRS（OEG16ME，Spectratech）每小时测量前额叶皮层中氧合血红蛋白浓度 [oxy-Hb]的变化，以评估放射科医生的疲劳程度，并记录疲劳量表（FS）作为行为数据。
2 名受试者在 4 小时后出现主观疲劳感和明显的大脑活动下降，因此实验在 4 小时内完成。其余 7 名受试者继续进行实验，直到 5 小时。FS 随时间降低，在图像解释开始前和结束时观察到显著降低。9 名受试者中有 7 名在长时间图像解释结束时显示 [oxy-Hb]变化的最小值。所有 9 名受试者的 [oxy-Hb]平均变化明显小于图像解释过程中的最大值。
使用 [oxy-Hb]变化的 fNIRS 可能有助于监测放射科医生在图像解释过程中的疲劳。
