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Ultrasound and magnetic resonance image fusion and registration method

A magnetic resonance image and registration technology, applied in the field of medical image processing, can solve the problems of low accuracy and lack of clinical application, etc., and achieve the effect of accurate finite element model and accurate data registration

Inactive Publication Date: 2014-09-24
SHENZHEN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of low accuracy and lack of clinical application of the ultrasonic and magnetic resonance image fusion registration method in the prior art, and provide an accurate and clinically applicable ultrasonic and magnetic resonance image fusion registration method

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  • Ultrasound and magnetic resonance image fusion and registration method

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Embodiment

[0085] In order to verify the accuracy and feasibility of the method, we used two different commercial prostate phantoms 053-MM and 053-AEF (CIRS, Norfolk, USA) in the experiment. Magnetic resonance imaging measurements were performed using a 3.0T magnetic resonance scanner with 32-channel head coils. 3D TRUS and ultrasound elastography images were acquired from DC-8 (Mindray, ShenZhen, China) and Aixplorer (Supersonic, France) ultrasound systems, respectively. see Figure 7 , are images of phantom 053-MM in different imaging modes, where (a) is phantom 053-MM, (b) is the cross-section of MRI-T2 image, (c) is B-mode ultrasound, (d) for ultrasound elastography.

[0086] In the experiments, prostate PMSSs were constructed separately for these two different prostate phantoms. Based on elastography, Young's modulus (E=30 kPa in 053-MM, E=20 kPa in 053-AEF) was assigned to the prostate model. To demonstrate the merits of our personalization approach, we construct a generalized ...

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Abstract

The invention provides an ultrasound and magnetic resonance image fusion and registration method which comprises the following steps: a finite element model of a prostate magnetic resonance image is constructed, prostate biomechanics information obtained by ultrasonic elastography is infused to the finite element model, according to the finite element model, principal component analysis is adopted to construct a prostate individuation statistics motion model to realize data registration between the prostate magnetic resonance image and a three-dimensional per rectum ultrasonic image. According to the ultrasound and magnetic resonance image fusion and registration method, the prostate biomechanics information obtained by ultrasonic elastography is infused to the finite element model, so that the finite element model is more accurate, and the data registration between the prostate magnetic resonance image and a three-dimensional per rectum ultrasonic image is more accurate; the ultrasound and magnetic resonance image fusion and registration method is suitable for clinical application.

Description

【Technical field】 [0001] The invention relates to medical image processing, in particular to a method for fusion and registration of ultrasound and magnetic resonance images. 【Background technique】 [0002] Prostate cancer is the most common non-skin cancer in men and the second-leading cause of death among non-skin cancers. At present, systemic biopsy guided by transrectal ultrasound (TRUS) has become the gold standard for the detection and diagnosis of prostate cancer because of its real-time performance, no radiation in imaging, low cost and simple operation. However, the false negative rate is as high as 30% due to the low resolution of TRUS images and the inability to clearly show early-stage prostate cancer. While magnetic resonance imaging (MRI) has higher image quality, trying to fuse pre-acquired MRI images with real-time TRUS images to provide higher-quality guidance is considered to be one of the main trends in the development of prostate biopsy. [0003] Howeve...

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Application Information

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IPC IPC(8): A61B8/00A61B5/055G06T7/00
Inventor 倪东王毅汪天富陈思平
Owner SHENZHEN UNIV
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