From the Guidelines
No, with ultrasounds the left of the screen is not always the medial side of the patient. The orientation on the ultrasound screen depends on the probe position and the standard convention being used. In most ultrasound examinations, the screen is oriented so that the left side corresponds to the side of the patient where the indicator (usually a notch, light, or mark) on the ultrasound probe is pointing. For example, in the parasternal long axis view, the probe marker is directed to the patient’s left hip (approximately 4-o’clock) or to the patient’s right shoulder (approximately 10-o’clock), resulting in different orientations on the screen 1. Key points to consider when interpreting ultrasound images include:
- The probe position and orientation marker on the screen
- The standard convention being used (e.g., radiological convention)
- The specific view being obtained (e.g., longitudinal or transverse scan) Understanding proper orientation is crucial for accurate interpretation and documentation of findings. Sonographers should always note the orientation marker on the screen and maintain consistent probe positioning to avoid confusion. Different specialties and institutions may have specific protocols for image orientation, so familiarity with local standards is important for accurate ultrasound interpretation.
From the Research
Ultrasound Screen Orientation
- The provided studies do not directly address the orientation of the ultrasound screen in relation to the patient's medial side 2, 3, 4, 5, 6.
- None of the studies mention a standard or guideline for positioning the left side of the screen to always represent the medial side of the patient.
- The studies focus on various aspects of ultrasound technology, such as its history, applications, and techniques, but do not discuss screen orientation in detail.
Relevant Information
- The studies cover a range of topics, including obstetric ultrasound 2, ultrasound imaging in oncology 3, EUS-guided FNA 4, ultrasound-mediated blood-brain barrier opening 5, and transrectal ultrasound-guided biopsy of the prostate 6.
- While these studies provide valuable information on ultrasound techniques and applications, they do not provide direct evidence to support a specific screen orientation standard.
Lack of Direct Evidence
- There are no research papers among the provided studies that directly address the question of whether the left side of the ultrasound screen should always represent the medial side of the patient.
- Further research or consultation of ultrasound guidelines and standards may be necessary to determine the correct orientation of the ultrasound screen.