Nozomi Nishizawa

Nozomi Nishizawa

What's NEW

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"
Master Defense FY2025
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.
2025/08/22Award
Congratulations!!!
Asato Esumi won the Young Encouragement Prize @ The 38th Kitasato University Bioscience Forum!!!
Asato Esumi won the Young Encouragement Prize @ Bioscience Forum 2025
2025/08/21Presentation
Presentations were carried out on The 38th Kitasato University Bioscience Forum@ Towada Campus of Kitasato University
  • OralPoster "Multidirectional investigation of effectiveness of CiPLS method for invasion depth measurement of squamous cell carcinoma"
    (Asato Esumi(M2), Mike Raj Maskey(M2), Yoshimasa Ito(B4), Kyosuke Murata(B4), Kouki Kasama(B4), Nozomi Nishizawa)
  • OralPoster "Phantom preparations for non-invasive, non-staining, quantitative optical biopsy of metastatic cancer using CiPLS method"
    (Mike Raj Maskey(M2), Yoshimasa Ito(B4), Kyosuke Murata(B4), Kouki Kasama(B4), Asato Esumi(M2)、Takahiro Kuchimaru, Nozomi Nishizawa）
  • Poster "CiPLS imaging of unexposed cancer for squamous intraepithelial dysplasia"
    (Nozomi Nishizawa, Toshihide Matsumoto, Takahiro Kuchimaru)
2025/08/04Presentation
Poster presentation titled "Cancer distribution measurements using circularly polarized light scattering" on SPIE Optics + Photonics 2025@ San Diego, USA
Poster presentation @ SPIE Optics + Photonics
2025/07/23Paper
Conference proceedings written by Mr. M. R. Maskey (M2) is published!!!
"Invasion depth estimation of gastric cancer in early stage using circularly polarized light scattering: phantom studies"
Proceeings of SPIE, 13702, 1370207 (2025) .
2025/04/24Presentation
Poster presentation entitled "Invasion depth estimation of gastric cancer in early stage using circularly polarized light scattering: Phantom studies" by Mr. M. R. Maskey (M2) on The 11th Biomedical Imaging and Sensing Conference (BISC2025) in Optics & Photonics International Congress 2025（OPIC2025）@ Pacifico Yokohama
2023/08/09Paper
The collaboration article on CREST[Innovative Optics and Photonics] has been published !!
"Acquisition of full Mueller matrix distribution of cancer tissue with near-infrared polarization-probe polarization-imaging and search for its optimal polarization conditions"
Optics Express, 33(8), 18214-18224 (2025).
2025/04/01Grant
The proposal "Establishment of evaluation technique using circularly polarized light scattering to evaluate the precancerous lesion of gynecological cancer" has been accepted for JSAP Grant-in-Aid for Scientific Research (B) (PI:N. Nishizawa, '25-'27, in collaboration with Prof. T. Kuchimaru at Jichi Meddical Univ. and Dr. T. Matsumoto at Kitasato Univ).
We appreciate this opportunity and will continue our efforts to achieve innovative achievements.
Past News are here

Research introduction (in Japanese)

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