Related Experiment Video
Updated: Jun 13, 2026

Focused Assessment with Sonography for Trauma (FAST) Exam: Image Acquisition
Published on: September 22, 2023
Accuracy of prehospital focused abdominal sonography for trauma after a 1-day hands-on training course
Felix Walcher1, Thomas Kirschning, Michael P Müller
1Department of Trauma Surgery, Johann Wolfgang Goethe-University, Frankfurt/Main, Germany. walcher@trauma.uni-frankfurt.de
Objectives:
To establish a training course for Prehospital Focused Abdominal Sonography for Trauma (P-FAST) and to evaluate the accuracy of the participants after the course and at the trauma scene.
Methods:
A training programme was developed to provide medical staff with the skills needed to perform P-FAST. In order to evaluate the accuracy of P-FAST performed by the students, nine participants (five emergency doctors and four paramedics) were followed during their course and in practice after the course. An assessment was made of 200 ultrasound procedures performed during the course in healthy volunteers and in patients with peritoneal dialysis or ascites. Regular P-FAST performed on-scene by the participants commenced immediately following the course. The results for the nine participants (C-group, course group) were compared with those members of medical staff with more than 3 years of experience in FAST (P-group, professional group). A group of physicians untrained in P-FAST served as a control (I-group, indifferent group). P-FAST findings were further verified by subsequent FAST and CT scans in the emergency department.
Results:
After the training programme the C-group performed 39 P-FAST procedures without any false negative or false positive findings (100% accuracy). In the P-group, 112 procedures were performed with one false positive case. In the I-group there were 2 false negative cases among the 46 procedures performed.
Conclusion:
Following completion of a 1-day P-FAST course, participants were able to perform ultrasound procedures at the scene of an accident with a high level of accuracy.
Related Concept Videos
Ultrasonography
During an ultrasonography procedure, a handheld device called a...
Ultrasound I: Abdominal Ultrasonography
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Assessment of the Abdomen II: Percussion
Percussion
Percussion is an essential...
Imaging Studies II: Ultrasonography

