A hybrid navigation system for reliable navigation surgery - microscopic optical tracking and electromagnetic suction tube tracking

2002 ◽  
pp. 1068-1068
Author(s):  
Junji Yamada ◽  
Amami Kato ◽  
Haruhiko Kishima ◽  
Masayuki Hirata ◽  
Toshiki Yoshimine
Keyword(s):  
Navigation System ◽  
Optical Tracking ◽  
Navigation Surgery ◽  
Suction Tube

Augmented reality navigation system for laparoscopic splenectomy in children based on preoperative CT image using optical tracking device

2011 ◽  
Vol 28 (4) ◽  
pp. 341-346 ◽  
Author(s):  
Satoshi Ieiri ◽  
Munenori Uemura ◽  
Kouzou Konishi ◽  
Ryota Souzaki ◽  
Yoshihiro Nagao ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Navigation System ◽  
Laparoscopic Splenectomy ◽  
Optical Tracking ◽  
Ct Image ◽  
Preoperative Ct ◽  
Tracking Device

scholarly journals Augmented Marker Tracking for Peri-acetabular Osteotomy Surgery: A Cadaver Study

10.29007/9mbb ◽  
2018 ◽  
Author(s):  
Silvio Pflugi ◽  
Till Lerch ◽  
Rakesh Vasireddy ◽  
Nane Boemke ◽  
Moritz Tannast ◽  
...  
Keyword(s):  
Navigation System ◽  
Ground Truth ◽  
Video Stream ◽  
Cadaver Study ◽  
Optical Tracking ◽  
Host Computer ◽  
Absolute Difference ◽  
Measurement Unit ◽  
Navigation Systems ◽  
Acetabular Fragment

Purpose. To validate a small, easy to use and cost-effective augmented marker-based hybrid navigation system for peri-acetabular osteotomy surgery.Methods. A cadaver study including 3 pelvises (6 hip joints) undergoing navigated PAO was performed. Inclination and anteversion of two navigation systems for PAO were compared during acetabular reorientation. The hybrid system consists of a tracking unit which is placed on the patient’s pelvis and an augmented marker which is attached to the patient’s acetabular fragment. The tracking unit sends a video stream of the augmented marker to the host computer. Simultaneously, the augmented marker sends orientation output from an integrated inertial measurement unit (IMU) to the host computer. The host computer then computes the pose of the augmented marker and uses it (if visible) to compute acetabular orientation. If the marker is not visible, the output from the IMU is used to update the orientation. The second system served as ground truth and is a previously developed and validated optical tracking-based navigation system.Results. Mean absolute difference for inclination and anteversion (N = 360) was 1.34 degrees and 1.21 degrees, respectively. The measurements from our system show a very strong correlation to the ground-truth optical tracking-based navigation system for both inclination and anteversion (0.9809 / 0.9711).Conclusion. In this work we successfully demonstrated the feasibility of our system to measure inclination and anteversion during acetabular reorientation.

scholarly journals The influence of dental experience on a dental implant navigation system

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ting-Mao Sun ◽  
Huey-Er Lee ◽  
Ting-Hsun Lan
Keyword(s):  
Dental Implant ◽  
Navigation System ◽  
Surgical Navigation ◽  
Total Error ◽  
Operating Time ◽  
Dental Students ◽  
Optical Tracking ◽  
Implant Surgery ◽  
Experience Levels ◽  
Significant Difference

Abstract Background This study evaluated the operating performance of an implant navigation system used by dental students and dentists of prosthodontic background with varying levels of experience. A surgical navigation system and optical tracking system were used, and dentists’ accuracies were evaluated in terms of differences between the positions of actually drilled holes and those of the holes planned using software before surgeries. Methods The study participants were 5 dental students or dentists who had studied in the same university and hospital but had different experience levels regarding implants. All participants were trained in operating the AqNavi system in the beginning of the study. Subsequently, using 5 pairs of dental models, each participant drilled 5 implant holes at 6 partially edentulous positions (11, 17, 26, 31, 36, and 47). In total, each participant conducted 30 drilling tests. Results In total, 150 tests among 5 dentists at 6 tooth positions (11, 17, 26, 31, 36, and 47) were conducted. Although a comparison of the tests revealed significant differences in the longitudinal error (P < .0001) and angular error (P = .0011), no significant difference was observed in the total error among the dentists. Conclusions A relatively long operating time was associated with relatively little implant experience. Through the dental navigation system, dental students can be introduced to dental implant surgery earlier than what was possible in the past. The results demonstrated that the operational accuracy of the dental implant navigation system is not restricted by participants’ implant experience levels. The implant navigation system assists the dentist in the ability to accurately insert the dental implant into the correct position without being affected by his/her own experience of implant surgery.

scholarly journals A Multimodality Navigation System for Endoscopic Fetal Surgery: A Phantom Case Study for Congenital Diaphragmatic Hernia

2018 ◽  
Vol 26 (1) ◽  
pp. 27-36 ◽  
Author(s):  
Hariprashanth Elangovan ◽  
Wei Yao ◽  
Kypros Nicolaides
Keyword(s):  
Congenital Diaphragmatic Hernia ◽  
Diaphragmatic Hernia ◽  
Navigation System ◽  
Fetal Surgery ◽  
Optical Tracking ◽  
Navigation Systems ◽  
Surgical Equipment ◽  
Extensive Experience ◽  
Robotic Instruments ◽  
Navigation Software

This article presents a multi-modality tracking and navigation system achieved by merging optical tracking and ultrasound imaging into a novel navigation software to help in surgical pre-planning and real-time target setting and guidance. Fetal surgeries require extensive experience in coordination of hand-eye-ultrasound-surgical equipment, knowledge, and precise assessment of relative anatomy. While there are navigation systems available for similar constrained working spaces in arthroscopic and cardiovascular procedures, fetal minimally invasive surgery does not yet have a dedicated navigation platform capable of supporting robotic instruments that can be adapted to the set of unique procedures. This article discusses the testing of the novel multi-modality navigation system in a phantom environment developed for this purpose. The outcomes suggest that the subjects demonstrated an increase in average reaching accuracy by about 60% and an overall reduction in time taken by 33.6%. They also showed higher levels of confidence in reaching the targets, which was visualised from the pattern of trajectory of movements during the procedure. To evaluate the navigation system, a phantom surgical environment was found necessary. Therefore, the article also discusses the details of the development of a fetal phantom environment for congenital diaphragmatic hernia for surgical testing, evaluation, and training. A surgical procedure was conducted on the phantom using the proposed tracking navigation system and using only ultrasound.

scholarly journals Compared with conventional procedures performed via the occipital horn, an intraoperative navigation system for ventriculoperitoneal shunting improves outcomes in patients with hydrocephalus

2019 ◽  
Author(s):  
Aijun Peng ◽  
Hai Zhao ◽  
Yongkang Wu ◽  
Yi Zhao ◽  
Liangxue Zhou
Keyword(s):  
Navigation System ◽  
Catheter Placement ◽  
Intraoperative Navigation ◽  
Ventricular Catheter ◽  
Conventional Surgery ◽  
Navigation Surgery ◽  
Surgery Group ◽  
Ventriculoperitoneal Shunting ◽  
Catheter Obstruction ◽  
Evans Index

Abstract Background: Ventriculoperitoneal shunting (VPS) is a common neurosurgical procedure for treating hydrocephalus. Catheter obstruction is one of the most common factors that influences patient prognosis. We evaluated the accuracy of proximal catheter placement and explored the probable relationship between ventricular catheter obstruction and both symptom grade and postoperative Evans index between an intraoperative navigation system for VPS and conventional surgery via the occipital horn. Methods: We performed a retrospective study of 33 patients with VPS (he navigation surgery group) and 26 patients with VPS (the conventional surgery group) seen between January 2012 and August 2018. The clinical data, follow-up times, catheterization accuracy, postoperative outcomes, cumulative survival times and correlations between catheter placement and obstruction, symptom grade and the postoperative Evans index. Results: Thirty-one patients experienced optimal ventricular catheter placement (grade 1), 2 experienced suboptimal placement (grade 2), and none experienced poor ventricular catheter placement (grade 3) in the navigation surgery group, whereas 6, 14, and 6 patients, respectively, had these results in the conventional surgery group. There was greater improvement in postoperative symptoms (P=0.017), including less catheter readjustment (P<0.001), in the navigation surgery group. Kaplan-Meier survival analysis showed that the cumulative catheter obstruction-free survival time was longer in the navigation surgery group than in the conventional surgery group (P=0.028). Catheter placement was significantly correlated with catheter obstruction (P<0.001). In addition, catheter obstruction was significantly correlated with the symptom grade (P=0.001) and postoperative Evans index (P<0.001). Conclusions: An intraoperative navigation system for VPS improved patient outcomes and the accuracy of ventricular catheter placement. Catheter obstruction-free survival times were longer in the navigation surgery group, and catheter placement was significantly correlated with catheter obstruction.

Design and Implementation of an Improved Real-Time Tracking System for Navigation Surgery by Fusion of Optical and Inertial Tracking Methods

2012 ◽  
Vol 186 ◽  
pp. 273-279 ◽  
Author(s):  
Ali Soroush ◽  
Farzam Farahmand ◽  
Hassan Salarieh
Keyword(s):  
Inertial Sensors ◽  
Tracking System ◽  
Time Integration ◽  
Optical Tracking ◽  
Tracking Systems ◽  
Fusion Algorithm ◽  
Navigation Surgery ◽  
Orientation Data ◽  
Individual System ◽  
Real Time Tracking

The fusion of the optical and inertial tracking systems seems an attractive solution to solve the shadowing problem of the optical tracking systems, and remove the time integration troubles of the inertial sensors. We developed a fusion algorithm for this purpose, based on the Kalman filter, and examined its efficacy to improve the position and orientation data, obtained by each individual system. Experimental results indicated that the proposed fusion algorithm could effectively estimate the 2 seconds missing data of the optical tracker.

scholarly journals 3D ultrasound guided navigation system with hybrid image fusion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
David Iommi ◽  
Alejandra Valladares ◽  
Michael Figl ◽  
Marko Grahovac ◽  
Gabor Fichtinger ◽  
...  
Keyword(s):  
Image Registration ◽  
Image Fusion ◽  
Hausdorff Distance ◽  
Navigation System ◽  
Tracking System ◽  
3D Ultrasound ◽  
Optical Tracking ◽  
Mr Image ◽  
Optical Tracking System ◽  
Guided Biopsy

AbstractA prototype of a navigation system to fuse two image modalities is presented. The standard inter-modality registration is replaced with a tracker-based image registration of calibrated imaging devices. Intra-procedure transrectal US (TRUS) images were merged with pre-procedure magnetic resonance (MR) images for prostate biopsy. The registration between MR and TRUS images was performed by an additional abdominal 3D-US (ab-3D-US), which enables replacing the inter-modal MR/TRUS registration by an intra-modal ab-3D-US/3D-TRUS registration. Calibration procedures were carried out using an optical tracking system (OTS) for the pre-procedure image fusion of the ab-3D-US with the MR. Inter-modal ab-3D-US/MR image fusion was evaluated using a multi-cone phantom for the target registration error (TRE) and a prostate phantom for the Dice score and the Hausdorff distance of lesions . Finally, the pre-procedure ab- 3D-US was registered with the TRUS images and the errors for the transformation from the MR to the TRUS were determined. The TRE of the ab-3D-US/MR image registration was 1.81 mm. The Dice-score and the Hausdorff distance for ab-3D-US and MR were found to be 0.67 and 3.19 mm. The Dice score and the Hausdorff distance for TRUS and MR were 0.67 and 3.18 mm. The hybrid navigation system showed sufficient accuracy for fusion guided biopsy procedures with prostate phantoms. The system might provide intra-procedure fusion for most US-guided biopsy and ablation interventions.

Endoscopic Augmented Reality Navigation System for Endonasal Transsphenoidal Surgery to Treat Pituitary Tumors: Technical Note

Neurosurgery ◽  
2002 ◽  
Vol 50 (6) ◽  
pp. 1393-1397 ◽  
Author(s):  
Takakazu Kawamata ◽  
Hiroshi Iseki ◽  
Takao Shibasaki ◽  
Tomokatsu Hori
Keyword(s):  
Augmented Reality ◽  
Navigation System ◽  
Transsphenoidal Surgery ◽  
Tracking System ◽  
Three Dimensional ◽  
Pituitary Tumors ◽  
Optical Tracking ◽  
Navigation Systems ◽  
Optical Tracking System ◽  
Light Emitting

Abstract OBJECTIVE Endoscopes have been commonly used in transsphenoidal surgery to treat pituitary tumors, to compensate for the narrow surgical field. Although many navigation systems have been introduced for neurosurgical procedures, there have been few reports of navigation systems for endoscopic operations. This report presents our recently developed, endoscopic, augmented reality (AR) navigation system. METHODS The technology is based on the principles of AR environment technology. The system consisted of a rigid endoscope with light-emitting diodes, an optical tracking system, and a controller. The operation of the optical tracking system was based on two sets of infrared light-emitting diodes, which measured the position and orientation of the endoscope relative to the patient's head. We used the system during endonasal transsphenoidal operations to treat pituitary tumors in 12 recent cases. RESULTS Anatomic, “real,” three-dimensional, virtual images of the tumor and nearby anatomic structures (including the internal carotid arteries, sphenoid sinuses, and optic nerves) were superimposed on real- time endoscopic live images. The system also indicated the positions and directions of the endoscope and the endoscopic beam in three-dimensional magnetic resonance imaging or computed tomographic planes. Furthermore, the colors of the wire-frame images of the tumor changed according to the distance between the tip of the endoscope and the tumor. These features were superior to those of conventional navigation systems, which are available only for operating microscopes. CONCLUSION The endoscopic AR navigation system allows surgeons to perform accurate, safe, endoscope-assisted operations to treat pituitary tumors; it is particularly useful for reoperations, in which midline landmarks may be absent. We consider the AR navigation system to be a promising tool for safe, minimally invasive, endonasal, transsphenoidal surgery to treat pituitary tumors.

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