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Fig. 3 | BMC Surgery

Fig. 3

From: A novel localization technique for peripheral ground glass opacity using geometric parameters measured on CT images

Fig. 3

The surgical procedures for wedge resection of GGO. A The corresponding rib or intercostal space was firstly identified according to Y-axis value. B1 We used a thoracic drainage tube at the length of X-axis value for the GGO in the rear. Along the identified rib or intercostal space, we placed the thoracic drainage tube from the sympathetic chain and marked the parietal pleura projection of GGO using electrotome cautery. B2 For the GGO in the front, the length of the drainage tube was calculated as X-axis value—0.5 cm. We placed the thoracic drainage tube from the internal thoracic vessels and marked the parietal pleura projection using electrotome cautery. C Electrotome was placed on the marked parietal pleural projection. And the anesthetist inflated the affected side lung. D When the affected side lung was fully inflated, electrotome cautery marked the visceral pleural surface corresponding to the parietal pleura projection. E Wedge resection was performed using a linear cutting stapler along the identified rib or intercostal space. The depth of the resection was estimated according to the Z-axis value to guarantee the sufficient resection margin

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