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Auto Measurement and Segmentation of Head Region in Fetal Ultrasound Images

تجزئة و قياس منطقة الرأس في الصور فوق الصوتية للجنين بشكل آلي

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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This Paper offers an innovative way for auto segmentation of the fetal head in ultrasound US images. There is high amount of noise in US images, which it affects the visual appearance of the area of head. The research depends on auto segmentation mechanism without the need for user intervention at any stage of proposed method, so this is what makes segmentation process is difficult and important at the same, because the weakness of the edges and not fully enclosed in the desired region. We relied on a Level Set method to segment the head area, after determining the initial contour automatically by the Region Properties Function. The proposed method proves effective in the head area segmentation without being influenced by noise or the existence of discontinuities in the edges of the head, despite the absence of a pre-processing stage in a series of steps applied to several ultrasound images in different sizes and sources. The last step is to calculate the secondary diameter of the output ellipse (the fetal head sector) depending on the properties of the region, and this final measurement represents the Bi Parietal Diameter BPD, an important measure enables the physician to assess gestational age and determine the birth of the fetus date. Segmentation result has been authenticated based on similarity criteria, and the final measurement accuracy has been compared with manual measurements carried out by a specialist. The comparison results showed the effectiveness of the proposed algorithm and its success by up to 98%.


Artificial intelligence review:
Research summary
يقدم هذا البحث طريقة مبتكرة لتجزئة رأس الجنين آلياً في الصور فوق الصوتية ذات التباين المنخفض. تعاني هذه الصور من كمية كبيرة من الضجيج الذي يؤثر على ظهور منطقة الرأس، وضعف الحواف الذي يجعل عملية التجزئة صعبة. تعتمد الطريقة المقترحة على خوارزمية ضبط المستوى لتجزئة منطقة الرأس بعد تحديد الإطار الأولي تلقائياً باستخدام تابع خصائص المنطقة. أثبتت الطريقة فعاليتها في اقتطاع منطقة الرأس دون التأثر بالضجيج أو الانقطاعات في الحواف، وتم حساب القطر الثانوي للقطع الناقص (رأس الجنين) باستخدام تابع خصائص المنطقة. تم التحقق من نتائج التجزئة بناءً على معايير التشابه، ومقارنة دقة القياس النهائي مع القياسات اليدوية التي قام بها طبيب مختص، حيث أظهرت النتائج فعالية الخوارزمية بنسبة تصل إلى 98%.
Critical review
دراسة نقدية: على الرغم من أن البحث يقدم طريقة مبتكرة وفعالة لتجزئة رأس الجنين في الصور فوق الصوتية، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم استخدام مرحلة معالجة مسبقة للصور، مما قد يؤثر على دقة النتائج في حالات الصور ذات الضجيج العالي جداً. ثانياً، تعتمد الطريقة بشكل كبير على خوارزمية ضبط المستوى، والتي قد تكون حساسة للبارامترات المستخدمة، مما يتطلب ضبطاً دقيقاً لكل صورة على حدة. ثالثاً، لم يتم اختبار الطريقة على مجموعة واسعة من الصور من مصادر وأحجام مختلفة بشكل كافٍ لضمان تعميم النتائج. وأخيراً، يمكن تحسين البحث بإضافة مقارنة مع طرق تجزئة أخرى لتوضيح مدى تفوق الطريقة المقترحة.
Questions related to the research
  1. ما هي المشكلة الرئيسية التي يعالجها البحث؟

    يعالج البحث مشكلة تجزئة رأس الجنين في الصور فوق الصوتية ذات التباين المنخفض والضجيج العالي بشكل آلي دون تدخل المستخدم.

  2. ما هي التقنية الأساسية المستخدمة في تجزئة الصور في هذا البحث؟

    التقنية الأساسية المستخدمة هي خوارزمية ضبط المستوى لتجزئة منطقة الرأس بعد تحديد الإطار الأولي تلقائياً باستخدام تابع خصائص المنطقة.

  3. كيف تم التحقق من دقة النتائج النهائية للطريقة المقترحة؟

    تم التحقق من دقة النتائج النهائية باستخدام معايير التشابه ومقارنتها مع القياسات اليدوية التي قام بها طبيب مختص.

  4. ما هي الفائدة الطبية من القياس الناتج عن الطريقة المقترحة؟

    القياس الناتج يمثل المسافة بين الجداريين (BPD)، وهو قياس مهم يمكن الطبيب من تقدير عمر الحمل وتحديد تاريخ الولادة للجنين.


References used
SHAN, J. A fully automatic segmentation method for breast ultrasound images, UTAH STATE UNIVERSITY, Logan, Utah, 2011, Pages 12-63
CHEN, Y.; Huang, F.; Tagare, H.; and Rao, M., A coupled minimization problem for medical image segmentation with priors, Int. J. Comput. Vis. 71(3), 2007, 259–272
KALE, A. and S, AKSOY. Segmentation of Cervical Cell Images. 20th International Conference on Pattern Recognition (ICPR), 2010
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