کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
444073 692879 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasound confidence maps using random walks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر گرافیک کامپیوتری و طراحی به کمک کامپیوتر
پیش نمایش صفحه اول مقاله
Ultrasound confidence maps using random walks
چکیده انگلیسی

Advances in ultrasound system development have led to a substantial improvement of image quality and to an increased use of ultrasound in clinical practice. Nevertheless, ultrasound attenuation and shadowing artifacts cannot be entirely avoided and continue to challenge medical image computing algorithms. We introduce a method for estimating a per-pixel confidence in the information depicted by ultrasound images, referred to as an ultrasound confidence map, which emphasizes uncertainty in attenuated and/or shadow regions. Our main novelty is the modeling of the confidence estimation problem within a random walks framework by taking into account ultrasound specific constraints. The solution to the random walks equilibrium problem is global and takes the entire image content into account. As a result, our method is applicable to a variety of ultrasound image acquisition setups. We demonstrate the applicability of our confidence maps for ultrasound shadow detection, 3D freehand ultrasound reconstruction, and multi-modal image registration.

Figure optionsDownload high-quality image (70 K)Download as PowerPoint slideHighlights
► We estimate a per-pixel confidence for ultrasound images.
► Confidence is estimated with a random walks framework.
► Shadow regions are reliably detected.
► The contrast is improved for ultrasound reconstruction.
► The accuracy and capture range is improved for CT–US registration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Image Analysis - Volume 16, Issue 6, August 2012, Pages 1101–1112
نویسندگان
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