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Updated: Jun 3, 2026

Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

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Published on: March 28, 2025

Color Doppler application in laparoscopic intraoperative ultrasonography.

J F Smulders¹, J J Jakimowicz

¹Resident in Surgery, Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands.

Surgical Technology International

|March 15, 2011

Summary

Laparoscopic intraoperative ultrasonography (LIOU) was introduced in 1990 for biliary tract screening during laparoscopic cholecystectomy. This technique enhances surgical diagnosis, particularly in minimal access surgery, addressing the loss of tactile feedback.

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Area of Science:

Surgical innovation
Medical imaging technology
Minimally invasive surgery

Background:

Intraoperative ultrasonography has emerged as a valuable diagnostic tool in various surgical fields.
The rise of minimal access surgery has increased reliance on advanced preoperative imaging.
Laparoscopic surgery for gastrointestinal malignancy highlighted the need for enhanced visualization due to lost tactile feedback.

Purpose of the Study:

To introduce and report on the application of laparoscopic intraoperative ultrasonography (LIOU).
To address the diagnostic challenges in laparoscopic surgery, particularly for biliary tract screening.
To leverage prior experience in intraoperative ultrasonography within the context of minimal access surgery.

Main Methods:

Development and implementation of laparoscopic intraoperative ultrasonography (LIOU) starting in 1990.
Application of LIOU for screening the biliary tract during laparoscopic cholecystectomy.
Continued reporting and refinement of LIOU techniques.

Main Results:

Successful application of LIOU for biliary tract screening in laparoscopic cholecystectomy.
Demonstrated effectiveness of intraoperative ultrasonography in various surgical examinations (liver, pancreas, vascular, etc.).
Increased use of LIOU following its introduction.

Conclusions:

Laparoscopic intraoperative ultrasonography (LIOU) is an effective modality for biliary tract screening in laparoscopic surgery.
LIOU addresses the limitations of tactile feedback in minimal access surgery.
The technique has shown promise and has been further reported on by other investigators.