intraoperative ultrasound
Also written as: IOUS — Intraoperative Ultrasound
Real-time ultrasound imaging performed during surgery to guide tumor localization and resection.
Full Definition
Intraoperative ultrasound is a surgical navigation technique that uses real-time ultrasound imaging during the operative procedure to enhance visualization of tumors and critical anatomical structures. This technology allows surgeons to precisely locate lesions that may not be visible or palpable, particularly in liver, brain, and pancreatic surgery. It can help determine the extent of resection needed, identify relationships between tumors and vital structures, and confirm complete removal of lesions. Intraoperative ultrasound is particularly valuable in minimally invasive procedures where tactile feedback is limited, and it can significantly improve surgical outcomes by reducing positive margin rates.
Usage
Usage note: Abbreviate as IOUS in subsequent references within the same document.
In Context
- "Intraoperative ultrasound confirmed complete tumor clearance before closing the resection cavity." — Operative report
- "The lesion was successfully localized using intraoperative ultrasound guidance." — Surgical procedure note