scholarly journals Design of ultra-wideband antenna for the localization of pulmonary lesions during thoracoscopic surgery

2021 ◽  
Vol 7 (2) ◽  
pp. 823-826
Author(s):  
Alberto Battistel ◽  
Peter Paul Pott ◽  
Eric Dominic Roessner ◽  
Knut Moeller

Abstract Biopsies or surgical excisions for diagnosis should be taken for pulmonary lesions which show evidence of growth or are larger than 8 mm. This is usually performed by video-assisted thoracoscopic surgery. To improve the intraoperative localization of these lesions, we propose to add an ultra-wideband antenna directly on a thoracoscopic tool and locate the lesion through microwave imaging. Here the design of an antenna for such a goal is undertaken. Numerical simulations are used to quantify the influence of a fictional lung lesion on the signal recorded by a bowtie antenna of different lengths (2 to 6 cm) and widths (0.5 to 1.5 cm). It is found that the most important design parameter is the total length of the antenna. The width of the antenna, instead, affects only marginally the signals, but it has a limited effect for deeper lesions

2014 ◽  
Vol 58 (6) ◽  
pp. 657-662 ◽  
Author(s):  
Kazushi Suzuki ◽  
Masashi Shimohira ◽  
Takuya Hashizume ◽  
Yoshiyuki Ozawa ◽  
Ryoji Sobue ◽  
...  

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Goar Egoryan ◽  
Elise Hyser ◽  
Ammar H. Mushtaq ◽  
Maria Adriana Yanez-Bello ◽  
Daniela Patricia Trelles-Garcia ◽  
...  

Abstract Background Cavities are frequent manifestations of a wide variety of pathological processes involving the lung. There has been a growing body of evidence of coronavirus disease 2019 leading to a cavitary pulmonary disease. Case presentation A healthy 29-year-old Filipino male presented to the hospital a couple of months after convalescence from coronavirus disease 2019 with severe pleuritic chest pain, fever, chills, and shortness of breath, and was found to have a cavitary lung lesion on chest computed tomography. While conservative management alone failed to improve the patient’s condition, he ultimately underwent left lung video-assisted thoracoscopic surgery decortication. Even though the surgical pathology revealed only necrosis with dense acute inflammation and granulation tissue with no microorganisms, he gradually improved with medical therapy adjunct with surgical therapy. Conclusion Documented cases of cavitary lung disease secondary to coronavirus disease 2019 have been mostly reported in the acute or subacute phase of the infection. However, clinicians should recognize this entity as a late complication of coronavirus disease 2019, even in previously healthy individuals.


2019 ◽  
Vol 68 (03) ◽  
pp. 253-255 ◽  
Author(s):  
Calvin S.H. Ng ◽  
Zerui Zhao ◽  
Hao Long ◽  
Rainbow W.H. Lau

AbstractSmall pulmonary lesions can be difficult to localize during video-assisted thoracoscopic surgery. Electromagnetic navigation bronchoscopy (ENB) dye marking of the lesion, particularly when guided by cone beam computed tomography in the hybrid operating room (HOR), is an emerging approach. However, issues with confirmation of dye injection and intraoperative visualization of the colored dye can be unpredictable and challenging. To address these uncertainties, we present our technique of ENB dye marking localization of lung nodule using the triple-contrast dye method in the HOR.


2017 ◽  
Vol 72 (10) ◽  
pp. 898.e7-898.e11 ◽  
Author(s):  
T. Gruber-Rouh ◽  
N.N.N. Naguib ◽  
M. Beeres ◽  
P. Kleine ◽  
T.J. Vogl ◽  
...  

1997 ◽  
Vol 5 (3) ◽  
pp. 162-164
Author(s):  
Sompop Prathanee ◽  
Cherdchai Tontisirin ◽  
Chusak Kuptamond

A retrospective analysis was made of the records of 10 patients who underwent pulmonary resection by video-assisted thoracoscopic surgery between April 1996 and January 1997. Five patients were referred with incidental findings of a lung mass. The other presenting symptoms were hemoptysis, chronic cough, and chest pain. The pulmonary lesions ranged in size from 1 to 5 cm in diameter, mean 3.3 cm. Video-assisted thoracoscope surgery comprised 7 lobectomies, 2 wedge resections, and 1 pneumonectomy. No postoperative complications were detected. Postoperative hospital stay averaged 7.8 days. We recommended using this procedure for pulmonary resection when indicated on selected patients, with an awareness of cost-effectiveness.


2015 ◽  
Vol 68 (6) ◽  
pp. 219-224
Author(s):  
Aurél Ottlakán ◽  
Tibor Géczi ◽  
Balázs Pécsy ◽  
Bernadett Borda ◽  
Judit Lantos ◽  
...  

Absztrakt Célkitűzés: A myasthenia gravis (MG) kezelésében számos nyitott, illetve minimálisan invazív thymectomia ismert. A tanulmány ugyanazon intézeten belül a transsternalis (TS), illetve kétféle minimálisan invazív thymectomia (video-assisted thoracoscopic extended thymectomy – VATET; unilateral video-assisted thoracoscopic surgery – UL-VATS) eredményeit hasonlítja össze. Anyag és módszerek: Három különböző időintervallumban 71 betegnél történt thymectomia MG miatt (60 nő, 11 férfi): 23 transsternalis thymectomia (1995. január–2004. szeptember), 22 VATET (2004. szeptember – 2009. augusztus) és 26 UL-VATS thymectomia (2009. szeptember – 2011. december). Az eredmények értékelésénél a műtéti idő, MG-hez társuló neurológiai és a műtét utáni sebészi szövődmények, valamint az MG státuszában az egyéves utánkövetéskor észlelt neurológiai változások szerepeltek. Eredmények: Perioperatív mortalitás nem fordult elő. A műtéti idő 112, 211, 116 perc (p = 0,001), a kórházi napok száma: 8,9, 5,6 és 4 nap (p = 0,001) volt a TS-, VATET- és UL-VATS-csoportban. Az MG-hez kapcsolódó postoperativ neurológiai szövődmények 21,7%, 18,2% és 7,7% (p = 0,365) értékeket mutattak. A sebészi szövődmény 4,3%, 13,7%, 0% (p = 0,118) volt. Az MG tüneteinek javulása 91,3%, 94,7%, 87,5% (p = 0,712), míg komplett remisszió 13%, 10,5%, 11,5% (p = 0,917) volt a TS-, VATET- és UL-VATS-csoportokban. Következtetések: A műtéti idő, valamint a kórházban eltöltött napok száma UL-VATS esetében volt a legrövidebb. A kisebb sebészi beavatkozáshoz alacsonyabb sebészi, illetve MG-s neurológiai szövődmények társultak. Az MG-tünetek javulásában mindhárom módszernél kiváló eredményt értek el.


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