Use of virtual assisted lung mapping (VAL-MAP), a bronchoscopic multispot dye- marking technique using virtual images, for precise navigation of thoracoscopic.

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Use of virtual assisted lung mapping (VAL-MAP), a bronchoscopic multispot dye- marking technique using virtual images, for precise navigation of thoracoscopic sublobar lung resection  Masaaki Sato, MD, PhD, Mitsugu Omasa, MD, PhD, Fengshi Chen, MD, PhD, Toshihiko Sato, MD, PhD, Makoto Sonobe, MD, PhD, Toru Bando, MD, PhD, Hiroshi Date, MD, PhD  The Journal of Thoracic and Cardiovascular Surgery  Volume 147, Issue 6, Pages 1813-1819 (June 2014) DOI: 10.1016/j.jtcvs.2013.11.046 Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Steps of virtual assisted lung mapping (VAL-MAP). CT, Computed tomography; 3D, 3-dimensional. The Journal of Thoracic and Cardiovascular Surgery 2014 147, 1813-1819DOI: (10.1016/j.jtcvs.2013.11.046) Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Conduction of virtual assisted lung mapping (VAL-MAP). A, Computed tomography (CT) scan of a patient who was found to have a ground glass opacity lesion (8 mm in diameter) in the right upper lobe during chest CT screening. B, Three-dimensional view of the VAL-MAP plan. The target lesion (red) and 3 planned markings (blue) are shown. C, Fluoroscopic view of the metal-tip catheter inserted into a target bronchus and reaching the pleura. D, CT scan taken 1 hour after VAL-MAP showing 3 markings as new ground glass opacity-like changes (arrows). E, Three-dimensional image constructed from post–VAL-MAP CT scan shown in Figure D. The target lesion (red) and 3 actual markings (blue) are shown. The interrupted line indicates the planned resection line by a stapler. In this case, the apical and lower lateral markings would have been included in the resection specimen, with the lower medial marking used as a reference to obtain the lateral resection margin, which would at the same time provide information regarding the depth of resection when a stapler was used. F, Intraoperative thoracoscopic view showing 3 blue markings on the lung surface (arrows). The interrupted line indicates the actual resection line. Permanent pathologic examination demonstrated carcinoma in situ. The Journal of Thoracic and Cardiovascular Surgery 2014 147, 1813-1819DOI: (10.1016/j.jtcvs.2013.11.046) Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Representative case of virtual assisted lung mapping (VAL-MAP) used for segmentectomy. A, A ground glass opacity lesion of 9 mm in diameter found in the right lower lobe. Resection of the superior subsegment of the posterolateral basal segment was planned. B, VAL-MAP plan with 4 markings indicating the location of the target lesion and intersegmental resection lines. C, Post–VAL-MAP 3-dimensional image constructed from a thin-slice computed tomography (CT) scan taken after VAL-MAP. Note, the localization of the actual markings was slightly away from the original plan in Figure B but still provided information regarding the location of the target lesion and resection lines. Thus, the operation plan was adjusted according to the “actual” markings after VAL-MAP. D, Intraoperative thoracoscopic view showing 4 blue markings on the lung surface. Note, the relationships among the markings were identical to those observed on the post-VAL-MAP 3-dimensional image in Figure C. The blue dots in Figures B and C indicate markings; the red dot indicates the target ground glass opacity lesion. The interrupted lines indicate the planned resection line. Permanent pathologic examination demonstrated stage T1a adenocarcinoma with a free resection margin. The Journal of Thoracic and Cardiovascular Surgery 2014 147, 1813-1819DOI: (10.1016/j.jtcvs.2013.11.046) Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions