Adapted erase method using ultraviolet light and the influence of ghosting image on a clinical CR image

Takahide Okamoto; Hiroko Ohuchi; Hideyuki Maejima; Toshihiro Minami; Eiji Mogi; Hiroshi Ichiji; Shigeru Furui

doi:10.1117/12.843359

23 March 2010 Adapted erase method using ultraviolet light and the influence of ghosting image on a clinical CR image

Takahide Okamoto, Hiroko Ohuchi, Hideyuki Maejima, Toshihiro Minami, Eiji Mogi, Hiroshi Ichiji, Shigeru Furui

Proceedings Volume 7622, Medical Imaging 2010: Physics of Medical Imaging; 76224J (2010) https://doi.org/10.1117/12.843359
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

In Storage Phosphor (SP) used for Computed Radiography (CR), the quite stable latent image remains due to impurities and the lattice imperfections by the existence of trapped electron and hole. The quite stable latent image appears again (Ghosting image) by the passage of time etc, is recognized as image, and becomes an artifact in a clinical CR image. This study verified the influence of Ghosting image on a clinical image by a physical characteristic and the subjective evaluation, and examined the method to delete this artifact by the exposure of ultraviolet light as a method of improving image. As a result, Ghosting image can be confirmed by the dose used by the clinical diagnosis study, and it is taken as deterioration of the granularity on a physical characteristic. The decrease of the granularity of about 15% (by winner spectrum) was admitted by the frequency band of 2cycle/mm in SP that had been used for a long term. As the method of improving these, Ghosting image was erased with the ultraviolet light lamp with the peak wavelength at 310nm, and has band from 290 nm to 320 nm, and is useful for the improvement of the image quality. In this study, we examine the influence of Ghosting image on a clinical image, and report on the method to delete them by the exposure to ultraviolet light radiation for the image quality improvement plan that uses the x-ray used for usual clinical diagnosis study.

Citation Download Citation

Takahide Okamoto, Hiroko Ohuchi, Hideyuki Maejima, Toshihiro Minami, Eiji Mogi, Hiroshi Ichiji, and Shigeru Furui "Adapted erase method using ultraviolet light and the influence of ghosting image on a clinical CR image", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76224J (23 March 2010); https://doi.org/10.1117/12.843359

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Image processing

Ultraviolet radiation

Image quality

X-rays

Surface plasmons

Chromium

Visualization

Show All Keywords

Keywords/Phrases

Search In:

Publication Years