Intermediate
Technical
In the Industry Vocabulary Test
intraoperative ultrasound
Real-time ultrasound imaging performed during surgery to guide tumor localization and resection margins.
Full Definition
An imaging technique used during urologic oncology procedures, particularly partial nephrectomy, to identify tumor boundaries, assess depth of invasion, and guide precise resection. Intraoperative ultrasound helps surgeons achieve negative margins while preserving maximum healthy tissue. The technique is especially valuable for endophytic renal masses that are not visible on the kidney surface and for confirming complete tumor removal during nephron-sparing procedures.
Usage
Usage note: Often abbreviated as 'IOUS' in operative notes.
In Context
- "Intraoperative ultrasound confirmed negative resection margins during partial nephrectomy." — Operative report
- "The endophytic tumor required intraoperative ultrasound for accurate localization." — Surgical planning
Also known as
IOUS
intraoperative sonography
Don't confuse with
preoperative ultrasound
contrast-enhanced ultrasound