navigational bronchoscopy - diagnosis and therapy · navigational bronchoscopy - diagnosis and...
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![Page 1: Navigational Bronchoscopy - Diagnosis and Therapy · Navigational Bronchoscopy - Diagnosis and Therapy Kazuhiro Yasufuku MD, PhD Director, Interventional Thoracic Surgery Program](https://reader034.vdocuments.site/reader034/viewer/2022051308/5ae8d9477f8b9ac3618ba94b/html5/thumbnails/1.jpg)
Navigational Bronchoscopy
- Diagnosis and Therapy
Kazuhiro Yasufuku MD, PhD
Director, Interventional Thoracic Surgery Program
Associate Professor of Surgery, University of Toronto
Division of Thoracic Surgery, Toronto General Hospital
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Masters of Minimally Invasive Thoracic Surgery Sep 18-20th, 2014
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Disclosure
• Industry-sponsored grants
• Educational and research grants from Olympus Medical Systems Corp.
• Consultant
• Olympus America Inc.
• Intuitive Surgical Inc.
• Covidien
• Johnson and Johnson
• Research Collaboration
• Siemens
• Novadaq Corp.
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Solitary Pulmonary Nodules
• More than 150,000 pts per year in the US will present with solitary pulmonary nodules (SPN)
• 1 in 500 CXR demonstrate a lung nodule
• Higher prevalence in CT scans (ELCAP)
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Swensen SJ, et al. Mayo Clin Proc 1999; 74:319-29 Tan, B, et al. Chest 2003;123:89S-96S
Henscke, C, et al. NEJM 2006; 355:1763-71
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Prevalence of Malignancy
• Dependant on size:
• 0-1% for nodules < 5 mm
• 6-28% for nodules 5 to 10 mm
• 64-82% for nodules > 20 mm
• Prevalence of at least one nodule: 8-51%
• Prevalence of malignancy in pts with nodules: 1-12%
• Dependant on other radiographic/patient characteristics (www.chestx-ray.com)
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Wahidi et al, CHEST 2007; 132:94s
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Diagnosis of Peripheral Lung Nodules (<2cm)
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• Surgical Resection
• 720/1467 49% Benign Hoffmann 2001
• CT Screening
• 98% Benign Midthun 2003
• Bronchoscopy (Fluoroscopic guidance)
• Poor visualization of lesion
• No pathway imaging
• Steering of tools difficult
• Yield 10-50% Cortese et al, Chest 2000; 117:1049
Nadich et al, 1988; 93:595 Gould et al, Chest 2007; 132:108s
Shinagawa et al, Chest 2004; 125: 1138
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Guided bronchoscopy
• Peripheral radial EBUS/guide sheath
• Electromagnetic Navigation bronchoscopy
• Super Dimension, Veran Medical
• Virtual bronchoscopy guided
• Lung Point, BF Navigation
• CT guided bronchoscopy
• Ultrathin bronchoscopy
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Guided bronchoscopy
• Peripheral radial EBUS/guide sheath
• Electromagnetic Navigation bronchoscopy
• Super Dimension, Veran Medical
• Virtual bronchoscopy guided
• Lung Point, BF Navigation
• CT guided bronchoscopy
• Ultrathin bronchoscopy
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Guided bronchoscopy
• Peripheral radial EBUS/guide sheath
• Electromagnetic Navigation bronchoscopy
• Super Dimension, Veran Medical
• Virtual bronchoscopy guided
• Lung Point, BF Navigation
• CT guided bronchoscopy
• Ultrathin bronchoscopy
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Improving the Yield: Radial EBUS
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UM-3R (O.D. = 2.5mm)
UM-S20-20R (O.D. = 1.7mm)
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EBUS-GS
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Radial probe EBUS - results
• Meta-analysis of 7 studies using radial probe EBUS for peripheral lesions
• Pooled sensitivity for lesions < 25 mm was 71%
• One randomized prospective trial has compared radial EBUS with CT guided biopsy
• Similar diagnostic accuracy
• Complication rates 3% vs. 27%
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Eur Respir J. 2011; 37: 902-10 Respir Med. 2011; 105: 1704-11
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Guided bronchoscopy
• Peripheral radial EBUS/guide sheath
• Electromagnetic Navigation bronchoscopy
• Super Dimension, Veran Medical
• Virtual bronchoscopy guided
• Lung Point, BF Navigation
• CT guided bronchoscopy
• Ultrathin bronchoscopy
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Electromagnetic Navigation (EMN)
• inReach system, (SuperDimension, Covidien)
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Real-time Location Information
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Miniaturized sensor
Real-time delivery of information
166/sec
Electromagnetic Location Board
Generation of electromagnetic waves
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EMN: Procedural steps
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CT scan DICOM CD Planning File export Navigation Biopsy
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EMN: Access to lesions
• Locatable Guide (LG) Catheter together with the Extended Working Channel (EWC) are inserted into the bronchoscope
• Upon reaching target, the EWC is fixed and the LG is retracted
• Tools and other catheters can be inserted for biopsy and treatment planning
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EMN: Access to lesions
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EMN results
• Diagnostic yield
• SPN<30mm: 54-75%
• Limitation
• registration error (3-8mm)
• not real-time sampling
• expensive
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Schwartz et.al., Chest 2006; 129; 988 Gildea et al, Am J Respir Crit Care Med 2006; 174: 982
Eberhardt et al, CHEST 2007; 131:1800 Eberhardt et al, AJRCCM 2007; 176: 36 Eberhardt et al, AJRCCM 2007; 176: 36
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EMN + EBUS-GS
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Eberhardt et al, AJRCCM 2007; 176: 36
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VBN/EMN: Spin Drive (Veran Medical Technologies)
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Spin Drive Planning
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Select Target: Autopath
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Spin Drive Planning
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Virtual flythrough evaluation
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Spin Drive Navigation
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Steerable Catheter (OD 3mm, 2mm working channel)
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Guided bronchoscopy
• Peripheral radial EBUS/guide sheath
• Electromagnetic Navigation bronchoscopy
• Super Dimension, Veran Medical
• Virtual bronchoscopy guided
• Lung Point, BF Navigation
• CT guided bronchoscopy
• Ultrathin bronchoscopy
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LungPoint - Broncus
William E et al. Computerized Medical Imaging and Graphics, 2008; 32, 732
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Yield 80%
LungPoint - Broncus
Eberhardt et al. JTO. 2010; 5(10):1559-1563
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Virtual Bronchoscopy Navigation (VBN)
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• Olympus BF Navigation
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Olympus BF Navigation
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Courtesy Dr. Fumio Asano
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VBN+EBUS-GS vs EBUS-GS (V-NINJYA Study)
• Multicentre, randomized control study
• Small peripheral nodules (< 3cm)
• Dx yield higher in VBN group
80.4% vs 67.0% (p=0.032)
• Shorter time in VBN group
24.0min vs 26.2min (p=0.016)
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Asano et al, Thorax 2011; 66: 1072
Randomised (n=199)
Allocated to VBN
(n=102)
Analysed (n=99)
Allocated to non-VBN
(n=97)
Analysed (n=95)
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Guided bronchoscopy – Meta-analysis
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Wang et al, Chest 2012; 142
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Why do TS need to do Transbronchial Biopsies?
• Bronchoscopic RFA • ENB-guided VATS wedge resection of peripheral lung nodules
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Chest. 2010 Apr;137(4):890-7 Seminars in Thoracic and Cardiovascular Surgery, Vol 22 (2), 2011
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Navigational bronchoscopy - Summary
• Continues to evolve
• Registration error
• Moderate yields
• Not real-time sampling
• Expensive (1K/forceps)
• Highest yield with combination of radial probe EBUS
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Division of Thoracic Surgery
Toronto General Hospital
University Health Network
Kazuhiro Yasufuku, MD, PhD, FCCP
Thank you