ObjectiveTo evaluate the preliminary application of 2 remote ultrasound modes based on 5G ultrasound robot and expert consultation system in emergency ultrasound examination.MethodsA total of 10 subjects, including stable patients and other volunteers, in the intensive care unit (ICU) of Department of Emergency and Critical Care Medicine of The Second Affiliated Hospital of Naval Medical University (Second Military Medical University) were enrolled in Sep. 2019. The 5G ultrasound robot (remote ultrasound mode 1) was remotely operated by an outpatient ultrasound physician to collect 7 standard sectional images of the subjects according to the thoracoabdominal extended focused assessment with sonography for trauma (EFAST) examination process, and then the same sectional images were collected by an emergency physician under the remote guidance of ultrasound expert consultation system (remote ultrasound mode 2) following the EFAST process. The difficulty of acquiring ultrasonic images, operator satisfaction, experience score of subjects, image quality, positive detection and missed diagnosis, and examination time under the 2 remote ultrasound modes were compared.ResultsWhen scanning the left anterior lower chest wall and splenorenal space with the left upper abdominal longitudinal section in supine position, the difficulty of obtaining ultrasonic images in the remote ultrasound mode 1 was significantly higher than that in the remote ultrasound mode 2, and the operator satisfaction was significantly lower than that in the remote ultrasound mode 2 (6.20±0.79 vs 6.95±0.80, 5.95±0.72 vs 6.75±0.89, P＝0.049, 0.041). When scanning the right anterior superior chest wall in supine position, the difficulty of acquiring ultrasonic images in the remote ultrasound mode 1 was significantly lower than that in the remote ultrasound mode 2 (7.40±0.57 vs 6.60±0.70, P＝0.012). The tension of subjects in the remote ultrasound mode 1 was significantly higher than that in the remote ultrasound mode 2 (4.95±0.98 vs 3.30±0.86, P < 0.001). There was no significant difference in the total score of image quality acquired by the 2 remote ultrasound modes (29.90±0.51 vs 29.50±0.46, P＝0.270). Among the 10 subjects, 6 had positive findings. Five were detected and 1 was missed in the remote ultrasound mode 1; 4 were detected and 2 were missed in the remote ultrasound mode 2. The examination time of the remote ultrasound mode 1 was significantly longer than that of the remote ultrasound mode 2 ([8.30±0.89] min vs [4.20±0.98] min, P < 0.001).ConclusionThe 2 remote ultrasound modes based on 5G ultrasound robot and expert consultation system are valuable in the emergency clinical application of rapid thoracoabdominal ultrasound examination, and can assist the first-line emergency physicians to quickly detect and classify injuries and provide real-time guidance on ultrasound pre-diagnosis.