Tuesday, June 17, 2008

講義資料: 医療機器開発と産学連携

Lecture Material: Collaboration of University and Industry for the Development of Medical Equipment
(See below for an English version)

応用理工学概論「医療機器開発と産学連携」の講義資料を公開します。いそいで作った出来の悪いマテリアルですが… 興味のある方はどうぞ。
- PDFをダウンロード

Joschi, 安野嘉晃

Here we release a Lecture Material of ``Collaboration of University and Industry for the Development of Medical Equipment.'' This material is for the lecture of``Introduction to Applied Science and Engineering,'' which is a general introduction for the 1st year students of our University (University of Tsukuba).
The material is still very primitive and written in English... But you can download it from the following URL.
- Download PDF

Joschi, Yoshiaki Yasuno

Monday, June 16, 2008

BiOS/ARVO2008 レポート (Only in Japanese)

国際会議 SPIE BiOS/Photonics West 2008, および米眼科学会 ARVO 2008 の簡易レポートを公開します。第5回電気学会バイオメディカル・フォトニクス先端技術調査専門委員会(2008年6月16日)による報告のために作成されたレポートです。興味のある方は「安野による主観的なもの」であることをご承知の上でご参考ください。


Joschi, 安野嘉晃

Thursday, June 5, 2008

Imaging Plarimetry in Age-Related Macular Degeneration

Our new paper was published in Investigative Ophthalmology and Visual Science (IOVS).
[Download from Journal Web Site]

The details are following

Title: Imaging Polarimetry in Age-Related Macular Degeneration

Authors: Masahiro Miura, Masahiro Yamanari, Takuya Iwasaki, Ann E. Elsner, Shuichi Makita, Toyohiko Yatagai, and Yoshiaki Yasuno

Citation: Invest. Ophthalmo. Vis. Sci. 49, 2661-2667 (2008).

To evaluate the birefringence properties of eyes with age-related macular degeneration (AMD). To compare the information from two techniques—scanning laser polarimetry (GDx) and polarization-sensitive spectral-domain optical coherence tomography (OCT)—and investigate how they complement each other.

The authors prospectively examined the eyes of two healthy subjects and 13 patients with exudative AMD. Using scanning laser polarimetry, they computed phase-retardation maps, average reflectance images, and depolarized light images. To obtain polarimetry information with improved axial resolution, they developed a fiber-based, polarization-sensitive, spectral-domain OCT system and measured the phase retardation associated with birefringence in the same eyes.

Both GDx and polarization-sensitive spectral-domain optical coherence tomography detected abnormal birefringence at the locus of exudative lesions. Polarization-sensitive, spectral-domain OCT showed that in the old lesions with fibrosis, phase-retardation values were significantly larger than in the new lesions (P = 0.020). Increased scattered light and altered polarization scramble were associated with portions of the lesions.

GDx and polarization-sensitive spectral-domain OCT are complementary in probing birefringence properties in exudative AMD. Polarimetry findings in exudative AMD emphasized different features and were related to the progression of the disease, potentially providing a noninvasive tool for microstructure in exudative AMD.

Image of the week in Optics InfoBase

The volume rendering image of the optic nerve head in our new publication entitled "Full-range, high-speed, high-resolution 1μm spectral-domain optical coherence tomography using BM-scan for volumetric imaging of the human posterior eye" was selected to "Image of the week" in Optics InfoBase.