Development of real-time navigation system for laparoscopic hepatectomy using magnetic micro sensor.
Minim Invasive Ther Allied Technol
; 33(3): 129-139, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38265868
ABSTRACT
BACKGROUND:
We report a new real-time navigation system for laparoscopic hepatectomy (LH), which resembles a car navigation system. MATERIAL ANDMETHODS:
Virtual three-dimensional liver and body images were reconstructed using the "New-VES" system, which worked as roadmap during surgery. Several points of the patient's body were registered in virtual images using a magnetic position sensor (MPS). A magnetic transmitter, corresponding to an artificial satellite, was placed about 40 cm above the patient's body. Another MPS, corresponding to a GPS antenna, was fixed on the handling part of the laparoscope. Fiducial registration error (FRE, an error between real and virtual lengths) was utilized to evaluate the accuracy of this system.RESULTS:
Twenty-one patients underwent LH with this system. Mean FRE of the initial five patients was 17.7 mm. Mean FRE of eight patients in whom MDCT was taken using radiological markers for registration of body parts as first improvement, was reduced to 10.2 mm (p = .014). As second improvement, a new MPS as an intraoperative body position sensor was fixed on the right-sided chest wall for automatic correction of postural gap. The preoperative and postoperative mean FREs of 8 patients with both improvements were 11.1 mm and 10.1 mm (p = .250).CONCLUSIONS:
Our system may provide a promising option that virtually guides LH.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Laparoscopy
/
Hepatectomy
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Minim Invasive Ther Allied Technol
Journal subject:
TERAPEUTICA
Year:
2024
Document type:
Article
Affiliation country:
Japan