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Thermal Ablation of Liver Tumors Guided by Augmented Reality: An Initial Clinical Experience.
Solbiati, Marco; Ierace, Tiziana; Muglia, Riccardo; Pedicini, Vittorio; Iezzi, Roberto; Passera, Katia M; Rotilio, Alessandro C; Goldberg, S Nahum; Solbiati, Luigi A.
Affiliation
  • Solbiati M; R&D Unit, R.A.W. Srl, 20127 Milano, Italy.
  • Ierace T; Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy.
  • Muglia R; Department of Radiology, ASST Papa Giovanni XXIII, 24127 Bergamo, Italy.
  • Pedicini V; Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy.
  • Iezzi R; Department of Diagnostic Imaging, Oncologic Rediotherapy and Hematology, IRCCS Policlinico Universitario A. Gemelli, Università Cattolica del Sacro Cuore, 00168 Rome, Italy.
  • Passera KM; R&D Unit, R.A.W. Srl, 20127 Milano, Italy.
  • Rotilio AC; R&D Unit, R.A.W. Srl, 20127 Milano, Italy.
  • Goldberg SN; Department of Radiology, Hadassah Hebrew University Medical Centre, Jerusalem 90221, Israel.
  • Solbiati LA; Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy.
Cancers (Basel) ; 14(5)2022 Mar 03.
Article in En | MEDLINE | ID: mdl-35267620
ABSTRACT

Background:

Over the last two decades, augmented reality (AR) has been used as a visualization tool in many medical fields in order to increase precision, limit the radiation dose, and decrease the variability among operators. Here, we report the first in vivo study of a novel AR system for the guidance of percutaneous interventional oncology procedures.

Methods:

Eight patients with 15 liver tumors (0.7−3.0 cm, mean 1.56 + 0.55) underwent percutaneous thermal ablations using AR guidance (i.e., the Endosight system). Prior to the intervention, the patients were evaluated with US and CT. The targeted nodules were segmented and three-dimensionally (3D) reconstructed from CT images, and the probe trajectory to the target was defined. The procedures were guided solely by AR, with the position of the probe tip was subsequently confirmed by conventional imaging. The primary endpoints were the targeting accuracy, the system setup time, and targeting time (i.e., from the target visualization to the correct needle insertion). The technical success was also evaluated and validated by co-registration software. Upon completion, the operators were assessed for cybersickness or other symptoms related to the use of AR.

Results:

Rapid system setup and procedural targeting times were noted (mean 14.3 min; 12.0−17.2 min; 4.3 min, 3.2−5.7 min, mean, respectively). The high targeting accuracy (3.4 mm; 2.6−4.2 mm, mean) was accompanied by technical success in all 15 lesions (i.e., the complete ablation of the tumor and 13/15 lesions with a >90% 5-mm periablational margin). No intra/periprocedural complications or operator cybersickness were observed.

Conclusions:

AR guidance is highly accurate, and allows for the confident performance of percutaneous thermal ablations.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Cancers (Basel) Year: 2022 Document type: Article Affiliation country: Italia

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Cancers (Basel) Year: 2022 Document type: Article Affiliation country: Italia