Prof. Akio MORITAJapan
Tokyo Rosai Hospital & Nippon Medical School
| 2024 to present | General Director, Tokyo Rosai Hospital |
| 2023 to present | Professor Emeritus, Nippon Medical School, Department of Neurological Surgery |
| 2013 - 2023 | Professor & Chaimrman, Department of Nurosurgery, Nippon Medical School, Tokyo Japan |
| 1998 - 2006 | Associate professor, Department of Neurosurgery, University of Tokyo Hospital, Tokyo Japan |
| 1997 - 1998 | Assistant professor, Department of Neurosurgery, George Washington University, Wahington DC, USA |
| 1989 - 1996 | Clinical Fellow and Resident, Mayo Clinic, Department of Neurological Surgery |
| 1982 - 1989 | Resdient and Medical Staff, University of Tokyo Hospital, Department of Neurosrugery |
Vascular surgery, Skull base surgery, Robotics and Medical Engineering
AKIO Morita, MD, PhD is currently the Director General of Tokyo Rosai Hospital and professor emeritus at Nippon Medical School. He was trained at University of Tokyo(1982-1989) and at the Mayo Clinic(1989-96) and was later appointed as Assistant and Associate Professor at the University of Tokyo(1998-2005) and he served as the chairman of department of Neurological Surgery, Nippon Medical School(2013-2023). He is currently the vice president of AASNS. He is board certified as neurosurgeon in Japan and the USA. His specialty is cerebrovascular surgery, cranial base surgery and epidemiological study of cerebrovascular disease and robot-mechatronics in research. He published more than 330 English peer review articles including NEJM, JAMA Neurology, Lancet Neurology, etc.
Intracranial aneurysms and influencing factors for its ruputre
1109 08:25-08:35
AASNS & WANS Joint Seminar/305
Introduction:
Influence of inflamation including oral and/or intestinal bacteria with the origin of cerebral aneurysm and its rupture have been recently interested. To clarify the relation with bacteria and subarachnoid hemorrhage, we are now conducting prospective multi-center study creating biobank and analysis.
Method and material:
We collected clinical data including food habits, saliva, stool and blood specimen of 175 cases(Subarachnoid hemorrhage:86, unruptured intracranial aneurysm:59, and reference (no history of stroke): 30cases). From saliva specimen, we cultured periodontoid bacteria and checked the incidence of cnm+ Streptcoccus Mutans, which is previously reported to be related with hemorrhagic cerebrovascular disease. For stool specimen, we have extracted DNA and analyzed bacteria using 16sRNA method and RDB, and DB (Technosuruga Co., Japan) library.
Result: We have cultured saliva of 171cases and found positive cnm+ Streptcoccus Mutans strain in 18 cases out of 74 positive S. Mutans cultures(24.3%). There was no difference in the positive rate between types of specimen. Stool flora analysis was done in 119 (SAH 68, UCA:29, REF:22) cases, and stool specimen from SAH patients showed dominancy of Prevotella intermedia, Peptacetobacter hiranonis, Corynebacterium mycetoides, Aggregatibacter segnis and Gemella asaccharolytica.
Discussions & conclusions:
We could not find difference in the positive culture rate of cnm+ S. Mutans between types of specimen. Some organisms specially found from stool specimen of SAH patients were reported to be responsible for infections endocarditis. Relationship between stool bacteria and onset of subarachnoid hemorrhage is yet to be clarified including blood bioproduct analysis. Also at the same time, we are trying to find difference of oral and stool flora between European and Japanese population, where incidence of subarachnoid hemorrhage is 3times higher.
Application of robotics and medical engineering for microneurosurgery
1109 09:45-10:00
AI & New Technology/304B
Here, we review robotics in neurosurgery and describe our work to develop microsurgical robotic systems and to apply engineering technology to advance neurosurgery.
Robotics and medical engineering can convert traditional surgery into digital and scientific procedures. With the collaboration of neurosurgeons and engineering scientists, we have been developing two types of microsurgical robotic systems. The first, the deep surgical systems, enable delicate surgical procedures such as vessel suturing in deep and narrow spaces. The other sustem allows super-fine surgical procedures such as anastomosing 0.3-mm vessels. Both systems are constructed with master and slave manipulator robotic system. Robotic systems allowed for secure and accurate procedures in deep surgical fields. Another trial included the digitalization of surgical technique and scientific analysis of surgical skills. Robotic and human hand motions can be analyzed in numerical fashion. Engineered skill assessment is also feasible and should be useful for microsurgical training.
Robotics and medical engineering should bring science into the surgical field and training of surgeons. Active bonds between medical and engineering teams and academic and industry groups are mandatory to produce and establish Microsurgical Robotic Engineering System