scholarly journals Mitral commissural prolapse

Author(s):  
EVA PAPADIMITRAKI ◽  
Alexandros Patrianakos ◽  
Antonis Pitsis ◽  
Maria Marketou ◽  
Aggeliki Zacharaki ◽  
...  

Mitral commissural prolapse or flail, either isolated or combined with more extensive degenerative valve disease imposes several challenges both on its diagnosis and management whilst being a risk factor for valve reoperation after mitral valve repair. Accurate identification of the prolapsing segment is often not feasible with transthoracic 2D echocardiography, with transesophageal 3D imaging then required for correct diagnosis and surgical planning. Various surgical techniques employed alone or in combination, have yielded good results in the repair of commissural prolapse. Herein, we analyze the specific characteristics of commissural disease focusing our attention on 2D and 3D echocardiographic findings and we briefly comment on techniques employed for surgical correction of the disease.

2016 ◽  
pp. 277-285 ◽  
Author(s):  
Jaron P. Sullivan ◽  
Timothy Bryan Griffith ◽  
Caroline N. Park ◽  
Anil S. Ranawat

2021 ◽  
Author(s):  
Yoon-Soo Seo ◽  
Ki-Hun Jo ◽  
Jun-Sang CHA ◽  
Joo-Yeon Kim ◽  
Jae-Hwan Kwon

Abstract Background: This study investigates and compare the reliability and reproducibility of two facial anthropometric methods about external nasal angles, 3D imaging and conventional 2D photography. Methods: 2D photograph images and 3D images about external nose of 30 volunteers were taken using digital camera and Morpheus 3D scanner. To evaluate intra-rater reliability, each images were taken over two different days for each subject by the same researcher. To evaluate inter-rater reliability, another researcher took each images for each subject on the first day. The reliability of each method for measuring 4 external nasal angle is obtained using intraclass correlation coefficient (ICC) and compared.Results: Inter-rater and intra-rater reliability of both 3D imaging and 2D photography had excellent agreement in all 4 nasal angles. In the nasofacial angular parameter, Inter-rater ICC, 2D photography was significantly higher than 3D imaging. Result of intra-rater ICC also showed both 3D imaging and 2D photography had good reliability in all 4 nasal angles. Similar to those of inter-rater ICC, nasofacial angular parameter showed statistically significant differences between 3D imaging and 2D photography.Conclusion: In terms of reliability, both 2D and 3D showed appropriate anthropometric results and considering its own advantage, each methods can be used complementarily.


2018 ◽  
Vol 111 (6-7) ◽  
pp. 432-440 ◽  
Author(s):  
Louis Labrousse ◽  
Marina Dijos ◽  
Lionel Leroux ◽  
Pierre Oses ◽  
Benjamin Seguy ◽  
...  
Keyword(s):  

2019 ◽  
Vol 29 (7) ◽  
pp. 073001 ◽  
Author(s):  
Hanyang Huang ◽  
Yi Zhao
Keyword(s):  

Author(s):  
Taku Sugiyama ◽  
Tod Clapp ◽  
Jordan Nelson ◽  
Chad Eitel ◽  
Hiroaki Motegi ◽  
...  

Abstract BACKGROUND Adequate surgical planning includes a precise understanding of patient-specific anatomy and is a necessity for neurosurgeons. Although the use of virtual reality (VR) technology is emerging in surgical planning and education, few studies have examined the effectiveness of immersive VR during surgical planning using a modern head-mounted display. OBJECTIVE To investigate if and how immersive VR aids presurgical discussions of cerebrovascular surgery. METHODS A multiuser immersive VR system, BananaVisionTM, was developed and used during presurgical discussions in a prospective patient cohort undergoing cerebrovascular surgery. A questionnaire/interview was administered to multiple surgeons after the surgeries to evaluate the effectiveness of the VR system compared to conventional imaging modalities. An objective assessment of the surgeon's knowledge of patient-specific anatomy was also conducted by rating surgeons’ hand-drawn presurgical illustrations. RESULTS The VR session effectively enhanced surgeons’ understanding of patient-specific anatomy in the majority of cases (83.3%). An objective assessment of surgeons’ presurgical illustrations was consistent with this result. The VR session also effectively improved the decision-making process regarding minor surgical techniques in 61.1% of cases and even aided surgeons in making critical surgical decisions about cases involving complex and challenging anatomy. The utility of the VR system was rated significantly higher by trainees than by experts. CONCLUSION Although rated as more useful by trainees than by experts, immersive 3D VR modeling increased surgeons’ understanding of patient-specific anatomy and improved surgical strategy in certain cases involving challenging anatomy.


1997 ◽  
Vol 14 (2) ◽  
pp. 109-112
Author(s):  
Russell Knudsen

In the main, the development of modern hair restoration surgical techniques has involved a few revolutions and a number of small evolutions. These evolutions have improved upon earlier techniques after carefully analyzing both the benefits and shortcomings of these pioneer techniques. Longer-term shortcomings in surgical planning have equally demonstrated the potential dangers of aggressive radical technique changes. Modern megasessions require a gradual increase in graft numbers to accommodate the need for development of staff skills unique to these procedures. Innovation is important, but it is more safely expressed in gradual improvements to existing techniques.


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