Inclusion Criteria:  Patient with abdominal pain in the right upper quadrant (will be indicated for the abdominal ultrasound) or patient with dyspnoea (will be indicated for lung ultrasound) or patient with suspected deep vein thrombosis (will be indicated for compression ultrasound testing) Signing of informed consent to participate in the study  Exclusion Criteria:  Age <18 years Refusal of ultrasound examination by patient Any circumstance that prevents ultrasonographic examination (eg allergy to ultrasonographic gel, skin lesions that do not allow safe examination, etc.)