Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems : Application of ROC Analysis
المؤلفون المشاركون
Okumura, Miwa
Katada, Kazuhiro
Ota, Takamasa
Kainuma, Kazuhisa
McNitt-Gray, Michael
Sayre, James W.
المصدر
International Journal of Biomedical Imaging
العدد
المجلد 2008، العدد 2008 (31 ديسمبر/كانون الأول 2008)، ص ص. 1-6، 6ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2008-11-16
دولة النشر
مصر
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
Objective.
For the multislice CT (MSCT) systems with a larger number of detector rows, it is essential to employ dose-reduction techniques.
As reported in previous studies, edge-preserving adaptive image filters, which selectively eliminate only the noise elements that are increased when the radiation dose is reduced without affecting the sharpness of images, have been developed.
In the present study, we employed receiver operating characteristic (ROC) analysis to assess the effects of the quantum denoising system (QDS), which is an edge-preserving adaptive filter that we have developed, on low-contrast resolution, and to evaluate to what degree the radiation dose can be reduced while maintaining acceptable low-contrast resolution.
Materials and Methods.
The low-contrast phantoms (Catphan 412) were scanned at various tube current settings, and ROC analysis was then performed for the groups of images obtained with/without the use of QDS at each tube current to determine whether or not a target could be identified.
The tube current settings for which the area under the ROC curve (Az value) was approximately 0.7 were determined for both groups of images with/without the use of QDS.
Then, the radiation dose reduction ratio when QDS was used was calculated by converting the determined tube current to the radiation dose.
Results.
The use of the QDS edge-preserving adaptive image filter allowed the radiation dose to be reduced by up to 38%.
Conclusion.
The QDS was found to be useful for reducing the radiation dose without affecting the low-contrast resolution in MSCT studies.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Okumura, Miwa& Ota, Takamasa& Kainuma, Kazuhisa& Sayre, James W.& McNitt-Gray, Michael& Katada, Kazuhiro. 2008. Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems : Application of ROC Analysis. International Journal of Biomedical Imaging،Vol. 2008, no. 2008, pp.1-6.
https://search.emarefa.net/detail/BIM-467411
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Okumura, Miwa…[et al.]. Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems : Application of ROC Analysis. International Journal of Biomedical Imaging No. 2008 (2008), pp.1-6.
https://search.emarefa.net/detail/BIM-467411
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Okumura, Miwa& Ota, Takamasa& Kainuma, Kazuhisa& Sayre, James W.& McNitt-Gray, Michael& Katada, Kazuhiro. Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems : Application of ROC Analysis. International Journal of Biomedical Imaging. 2008. Vol. 2008, no. 2008, pp.1-6.
https://search.emarefa.net/detail/BIM-467411
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-467411
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر