Table 1. Classification of basic ultrasound examination: single targeted versus multiple targeted.

Classification	Single targeted ultrasound examinationa	Multiple targeted ultrasound examination
Indication	1. Differential diagnosis of emergency situation, evaluation of acute lesion, decision of treatment plan, assistant for procedure (puncture and catheter insertion), etc.	Trauma in chest, abdomen, and pelvis, cardiac arrest, shock, dyspnea, and chest pain
	2. Ultrasound examination for fast decision making and accurate and safe treatment
Place	Emergency department, intensive care unit	Emergency department, intensive care, and other placesb
Equipment	Ultrasound device should be installed in the emergency department or intensive care unit	Ultrasound device should be installed in the emergency department or intensive care unit
Medical personnel	Physician	Resident physician or specialist in emergency medicine, specialist in critical care medicine, trauma surgery
Recording	Medical record	Medical record
Image storage	No obligation	No obligation
Scanning site	Head and neck, chest, heart, abdomen (including urinary tract), genitalia, and extremities	Chest, heart, and abdomen (including the urinary tract) should be examined. If necessary, the head and neck can be added

^aExamination of one part or two or more parts among head and neck, chest, heart, abdomen (including urinary system), genitalia and extremities; ^bIf the examination is performed in the emergency situation, the place of examination is not limited.