What's NEW

2026/08/06Presentation

Presentations were carried out on The 39th Kitasato University Bioscience Forum@ Sagamihara Campus of Kitasato University. The presenter is underlined in the list below;

• Poster"Fabrication of a High-Precision Tissue-Mimicking Phantom for Measuring Cancer Invasion Depth Using Circularly Polarized Light Scattering"
  (Mike Raj Maskey(D1), Koki Kasama(M1), Momoka Yamaguchi(B4), Iori Maeda(M1), Nozomi Nishizawa)
• Poster"Optical Imaging for Deep-Tissue Cancer Detection Using Circularly Polarized Light Scattering"
  (Koki Kasama(M1), Nozomi Nishizawa)
• Poster"Validation of Diffusely Infiltrating Cancer Detection Using Circularly Polarized Light Scattering with a Tissue Phantom"
  (Momoka Yamaguchi(M2), Mike Raj Maskey(D1), Koki Kasama(M1), Iori Maeda(M1), Nozomi Nishizawa)
• Poster"Development of a Flexible Phantom for Circularly Polarized Light Scattering Imaging to Reduce the Burden of Cervical Cancer Screening"
  (Ran Togawa, Iori Maeda(M1), Koki Kasama(M1), Nozomi Nishizawa)

2026/06/11Invited Presentation

Invited presentation entitled "Spatial Imaging of Cancerous Tissue Distribution using Circularly Polarized Light Scattering (CiPLS)" on The 74th LST Meeting "Sensing and Imaging Technologies Based on Tissue Spectroscopy and Their Applications in Biology, Medicine, and Healthcare"

2026/04/06Book

The new book titled "Optics and photonics in Medicine - diagnosis and treatment" which Prof. Nishizawa partly wrote was published by NTS Inc.

2026/04/01Grant

The proposal "Development of a Cervical Precancerous Lesion Imaging System Utilizing Circularly Polarized Light" has been accepted for AMED Translational Research Program (PI:N. Nishizawa, '26-'27).
We appreciate this opportunity and will continue our efforts to achieve innovative achievements.

2026/04/01News!

Five new members joined our lab.

2026/03/15Presentation

Presentations were carried out on The 73rd JSAP Spring Meeting 2026.

• Oral "In-vitro measurements with biological phantoms for detection of diffuse cancer using circularly polarized light scattering"
  (Yoshimasa Ito (B4), Iori Maeda (B4), Mike Raj Maskey(M2), Asato Esumi (M2), Nozomi Nishizawa)
• Oral "Verification of circularly polarized light scattering method for invasion depth measurement of epithelial cancers"
  (Asato Esumi(M2), Mike Raj Maskey (M2), Koki Kasama (B4), Miyu Kimura (B4), Nozomi Nishizawa)

2026/02/27Press Release

Kitasato University and Jichi Medical University issued the press release on our new journal
Press Release (English)
"Circularly polarized light scattering imaging of a cancerous layer creeping under a healthy layer for the diagnosis of early-stage cervical cancer"
J. Biomedical Optics 31(2), 027002.

2026/02/26Students

Our lab B4 members gave presentations in the oral examinations of graduation research.

• "Measurements of biological tissue phantoms for detection of diffuse cancer using CiPLS" (Yoshimasa Ito)
• "Integral sphere measurements and estimation of optical coefficients of biological phantoms using the r-MC method"（Iori Maeda）
• "Angular dependence measurements of circular depolarization in a particle dispersion medium"（Miyu Kimura）
• "Wavelength dependence of circular depolarization with double lock-in measurements"（Kyosuke Murata）
• "Investigation of surface morphology imaging using linear polarization components"（Koki Kasama）

2026/02/06Paper

Review paper is published!!!
"Circularly polarized light generated from electron spin, and its depolarization used for cancer detection"
Journal of Photochemistry & Photobiology, C: Photochemistry Reviews 66, 100742 (2026).

2025/02/20Students

Our lab M2 members gave presentations in the Master Defense.
Asato Esumi: "Mathematical investigations for depth estimation of cancer invasion using CiPLS"
Maskey Mike Raj: "Experiments on biological tissue phantoms for cancer detection using CiPLS"

2026/02/06Paper

Paper is published!!!
"Circularly polarized light scattering imaging of a cancerous layer creeping under a healthy layer for the diagnosis of early-stage cervical cancer"
J. Biomedical Optics 31(2), 027002.
The scientific illustration of the study was selected as a cover artwork in this journal.

2026/01/27Invited Presentation

Invited presentation entitled ""Visualization" Technology to "Invisible cancer" " using of circularly polarized light scattering" on The 3rd seminar in the 6th period of IEICE Technical Committee on System NanoTechnology

2026/01/09Invited Presentation

Invited presentation entitled "Circularly polarized light emitting diodes and cancer evaluation technique using of circularly polarized light" on The 56th Research Seminor of Optical Function Magnetic Devices & Materials

2025/12/11Presentation

Presentations were carried out onOptics & Photonics 2025

• Oral "Circularly polarized light scattering imaging of unexposed cancer for the diagnosis of early-stage cervical cancer"
  (Nozomi Nishizawa, Toshihide Matsumoto, Takahiro Kuchimaru)
• Oral "Measurements of Circular Polarized Light Scattering for Turbid Media with Fine Particles Imitating Scattering Phenomena in Biological Tissues"
  (Mike Raj Maskey(M2), Yoshimasa Ito(B4), Asato Esumi(M2), Kyosuke Murata(B4), Iori Maeda(B4), Takahiro Kuchimaru, Nozomi Nishizawa)
• Oral "Measurements of Turbid Media Including Scatterers with Different Sizes in Water Using Circularly Polarized Light Scattering for the Detection of Diffuse Cancer"
  (Yoshimasa ItoB4), Iori Maeda(B4), Mike Raj Maskey(M2), Asato Esumi(M2), Nozomi Nishizawa)
• Oral "Optimization of Circularly Polarized Light Scattering Method for Invasion Depth Measurement of Epithelial Cancers"
  (Asato Esumi(M2), Mike Raj Maskey(M2), Kouki Kasama(B4), Miyu Kimura(B4), Nozomi Nishizawa)
• Poster "Angular Dependences of Circular Depolarization due to Multiple Scattering by Biological Fine Particles"
  (Miyu Kimura(B4), Mike Raj Maskey(M2), Asato Esumi(M2), Nozomi Nishizawa)

2025/12/04Invited Presentation

Invited presentation entitled "Cancer evaluation using of circularly polarized light scattering" on The 25th Polarization Science and englneering

2025/10/30Presentation

Poster presentation titled “Circularly polarized light scattering (CiPLS) imaging of a cancerous layer creeping under a healthy layer for the diagnosis of early-stage cervical cancer" on ISBE2025（The 10th International Symposium on Biomedical Engineering）@ Higashi Hiroshima Arts & Culture Hall Kurara.

2025/09/10Presentation

Presentations were carried out on The 86th JSAP Autumn Meeting 2025.

• Oral "Experimental investigations of dependence of the diameter of scatterers on circularly polarization of light scattered from biological tissues"
  (Mike Raj Maskey(M2), Yoshimasa Ito (B4), Kyosuke Murata (B4), Koki Kasama (B4), Asato Esumi (M2), Takahiro Kuchimaru, Nozomi Nishizawa)
• Oral "Distribution measurement of squamous cell carcinoma using circularly polarized light scattering method"
  (Asato Esumi(M2), Mike Raj Maskey (M2), Yoshimasa Ito (B4), Kyosuke Murata (B4), Koki Kasama (B4), Nozomi Nishizawa)

2025/09/01News!

Dr. Nozomi Nishizawa has been promoted to a Professor.

Past News are here

Research introduction (in Japanese)