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Takei Lab
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A tomography lab that uses electricity to make the invisible visible.
AboutAbout the lab
Seeing the invisible with electricity.
The Takei Lab studies technologies that use electricity to "visualize" flows in which solids, liquids, and gases are mixed (multiphase flows).
Using Electrical Impedance Tomography (EIT) and Electrical Capacitance Tomography (ECT), the lab images the concentration distribution inside an object in three dimensions and over time.
The lab is divided into three units, for cells, living bodies, and multiphase flows, and applies the technology in each field, from drug discovery and lymphedema to the flow of slurries and cream.
Researchers from a range of backgrounds, including mechanical, electrical, biological, and information engineering, work together in the lab.
Key terms
- Multiphase flow
- A state in which materials with different properties, such as solids, liquids, and gases, flow while mixed together
- Electrical Impedance Tomography
- A technology that measures how difficult it is for electricity to flow at many points and assembles the results into an image of the inside of an object
- Lymphedema
- A condition in which the lymphatic system functions poorly, so that fluid collects under the skin and causes persistent swelling
NewsLab news
A doctoral student received the Best Student Poster award at EIT2026
Data from a paper by the lab was selected for the cover of Annals of Biomedical Engineering
A master's student received the Outstanding Young Presenter Fellow Award from the Kanto Branch of the Japan Society of Mechanical Engineers
A master's student received the Dean's Award of the Graduate School of Science and Engineering and the Miura Award
A master's student received the BEST PRESENTATION award at the international conference EEET2025
ResearchResearch themes
Using a visualization technology called electrical tomography, the lab aims to "visualize" targets that were previously considered impossible to see, and to create innovation in research and industry. The lab is divided into three units, for cell visualization, living-body visualization, and multiphase flow visualization, and applies the technology in each field.
*Illustrative imageExamining lymph and blood flow with electricity
The lab is developing technology to monitor blood flow inside and outside the body in real time. By attaching electrodes to the extracorporeal circulation circuit used in cardiovascular surgery and focusing on the dielectric spectroscopy characteristics of blood, the lab aims to make it possible in the future to detect blood clots on the spot.
*Illustrative imageEarly diagnosis of malaria
To enable early detection of malaria even in areas with limited facilities, the lab has developed a portable, Lab-on-a-CD electrical impedance analyzer. The work is carried out jointly with researchers in regions where malaria is endemic.
*Illustrative imageVisualizing mass transport in cells with electricity
Using small electrode sensors that apply electrical tomography at the milli-, micro-, and nano-scale, the lab visualizes ions and proteins moving in and out of cells without damaging them. Applications to cellular responses to drugs and to distinguishing cancerous tissue are being pursued jointly with other researchers.
*Illustrative imageElectrophysiological measurement of skin and fat
Skin and fat are the body's first barrier, protecting against external stimuli, sensing them, and responding to them. The lab works on coplanar sensors and data acquisition systems, image reconstruction algorithms and spectroscopic analysis, and the fabrication of biomaterial phantoms.
MembersFaculty
The members of the Takei Lab are faculty, researchers and administrative staff, PhD, master's, and undergraduate students, and collaborating researchers.As of 2026
- ProfessorMasahiro Takei
- Assistant ProfessorDaisuke Kawashima
- Project Assistant ProfessorSongshen Li
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Set of 16 prototype electrodes for applied potential tomography (APT), )” Science Museum London / Science and Society Picture Library / CC BY-SA 2.0 (cropped)
- Examining lymph and blood flow with electricity: “Perfusionist opearting heart lung machine” Pfree2014 / CC BY-SA 4.0 (cropped)
- Early diagnosis of malaria: “Microfluidic chip for point-of-care medical devices” FMNLab / CC BY 4.0 (cropped)
- Visualizing mass transport in cells with electricity: “Stretchable Microelectrode Array (sMEA) with white glue” Kwayyy / CC BY 4.0 (cropped)
- Electrophysiological measurement of skin and fat: “Bare chest of a old man for ECG with probes (36506)” Suyash.dwivedi / CC BY-SA 4.0 (cropped)
- Related lab (山本研究室): “ITER Central Solenoid CICC ( )” Charlie Sanabria / CC BY-SA 2.0 (cropped)
- Related lab (羽石研究室): “ESA astronaut Sophie Adenot shows off the Optical Coherence Tomography machine (iss074e0433179)” NASA Johnson Space Center / Public domain (cropped)
- Related lab ((共生16)分子構造解析化学研究室): “Artistic Crystallization, Bottom View” Paolo Infante / CC BY-SA 4.0 (cropped)
- Related lab (超
音波グループ 応用物理学研究室 （ULAP・吉田研究室） ): “A modern medical ultrasound scanner” Harrison Keely / CC BY 4.0 (cropped)
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