Background Efficient laparoscopic ablation of liver tumors relies on precise tumor visualization and accurate positioning of ablation probes. This study evaluates positional accuracy and procedural efficiency of a dynamic navigation technique based on electromagnetic-tracked laparoscopic ultrasound (ELUS) for laparoscopic ablation of liver tumors. Methods The proposed navigation approach combines intraoperative 2D ELUS-based planning for navigated positioning of ablation probes, with immediate 3D ELUS-based validation of intrahepatic probe position. The environmental influence on electromagnetic-tracking stability was evaluated in the operation room. Accuracy of navigated ablation probe positioning assessed as the target-positioning error (TPE), and procedural ec ffi iency den fi ed as time eo ff rts for target den fi ition/navigated targeting and number of probe repositionings, were evaluated in a laparoscopic model and compared with conventional laparoscopic ultrasound (LUS) guidance. Results The operation-room environment showed interferences < 1 mm on the EM-tracking system. A total of 60 targeting attempts were conducted by three surgeons, with ten targeting attempts using ELUS and ten using conventional LUS each. Median TPE and time for targeting using ELUS and LUS were 4.2 mm (IQR 2.9–5.3 mm) versus 6 mm (IQR 4.7–7.5 mm), and 39 s (IQR 24–47 s) versus 76 s (IQR 47–121 s), respectively (p < 0.01 each). With ELUS, median
Surgical Endoscopy – Springer Journals
Published: Feb 12, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera