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Orita Lab
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A medical engineering lab that uses engineering to detect spinal diseases and support their treatment.
AboutAbout the lab
Seeing the spine through both medicine and engineering
Orita Lab conducts research that connects medicine and engineering, centered on the spine.
Students in the lab mainly work on research using machine learning, and the lab also focuses on medical applications of VR and haptics technology.
Professor Sumihisa Orita is a surgeon specializing in the spine and also holds a master's degree in engineering.
As a result, it is one of the few medical engineering labs that can take a perspective closer to clinical medicine.
Key terms
- Dural tube
- A tube-shaped tissue that protects the spinal cord and cauda equina. It is filled with cerebrospinal fluid
- Hallux valgus
- A foot condition in which the big toe bends toward the little toe. It can cause foot pain
- Haptics
- Technology that conveys interaction between devices and people using the senses of touch and force
NewsLab news
A master's student received the Excellent Presentation Award in the Medical Staff Award Session at the 33rd Annual Meeting of the Japanese Society for Lumbar Spine Disorders
Paper by students and alumni published in an international journal
Paper by students and alumni published in an international journal
ResearchResearch themes
Centered on the spine, the lab develops technologies that support diagnosis and surgery. It works on image analysis using deep learning and on measurement using ultrasound.
*Illustrative imageFinding blood vessels in endoscopic images
Anterior lumbosacral fusion (OLIF51) is a minimally invasive procedure to fuse the fifth lumbar vertebra and the sacrum. In this approach, the common iliac vein runs close to the surgical field, so there is concern about the risk of injuring it during surgical maneuvers. The lab has therefore developed a model that detects the common iliac vein in endoscopic images, and is evaluating it on still images and video.
*Illustrative imageAn app that checks hallux valgus from a photo
The X-ray imaging used to examine hallux valgus is invasive and costly, so screening is not generally performed. The lab built a model that uses deep learning-based image processing to estimate the hallux valgus angle from an external photograph of the foot, and developed an app that runs it. The app can take photos, make estimates, and save records.
*Illustrative imageEstimating X-ray measurements from external photos
Hallux valgus is generally evaluated by measuring the HV angle on a plain X-ray of the foot, but X-rays involve cost and radiation exposure. Using deep learning, the lab estimated the HV angle, M1-M2 angle, and M1-M5 angle from external photographs of the foot. This may be usable for screening and epidemiological studies without radiation exposure.
*Illustrative imageMeasuring dural tube pulsation with ultrasound
The dural tube, which runs inside the spinal canal, pulsates in time with the heartbeat, but its detailed properties and mechanisms remain unclear. In patients with lumbar spinal canal stenosis, the lab recorded dural tube pulsation with an ultrasound diagnostic device and analyzed it together with electrocardiogram and respiration measurements. Ultrasound is minimally invasive and can measure in real time, and the lab aims to provide insights for understanding the disease and developing treatments.
MembersFaculty
The members of Orita Lab include faculty, and master's and undergraduate students.As of 2026
- ProfessorSumihisa Orita
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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: “Projectional radiograph of cervical foraminal stenosis” Mikael Häggström / CC0 (cropped)
- Finding blood vessels in endoscopic images: “Laparoscopic stomach surgery” Samuel Bendet, US Air Force / Public domain (cropped)
- An app that checks hallux valgus from a photo: “Hallux valgus or bunion 01” Lamiot / CC BY-SA 4.0 (cropped)
- Estimating X-ray measurements from external photos: “X-ray of normal right foot by dorsoplantar projection” Mikael Häggström, M.D. Author info - Reusing images- Conflicts of interest: None Mikael Häggström, M.D. / CC0 (cropped)
- Measuring dural tube pulsation with ultrasound: “Lumbar spine 140439 rgbca” Nevit Dilmen (talk) / CC BY-SA 3.0 (cropped)
- Related lab (Hayashi-Nagano Lab): “WBAMC first in DoD to use robot for surgery 160426-A-EK666-506” Marcy Sanchez / Public domain (cropped)
- Related lab (Hirata Lab): “Pelvic Ultrasound Examination Navi Mumbai India” Goleisureintl / CC BY 4.0 (cropped)
- Related lab (Micro-CT and Medical Imaging Engineering Lab): “X-ray Computed Tomography of Astromaterials -- jsc2024e076997” NASA Johnson Space Center / ROBERT MARKOWITZ NASA-JSC / Public domain (cropped)
- Related lab (Medical Bioelectromagnetics Lab (Saito Lab)): “Metallic lens antenna Bell Labs 1946” 作者不詳 / Public domain (cropped)
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