نتایج جستجو برای: 3d ultrasound
تعداد نتایج: 294066 فیلتر نتایج به سال:
In the fields of X-ray CT, MRI, and nuclear medicine, three-dimensional (3D) imaging techniques, mainly based on segmentation methods, for extracting the surface contours of 3D structures are widely used in clinical applications in order to obtain stereoscopic information regarding anatomical structures. It has been difficult to apply such segmentation techniques to diagnostic ultrasound images...
Three-dimensional and four-dimensional ultrasound (3D/4D US) technology can be easily applied to routine prenatal diagnosis and can provide images of the fetal face that cannot be achieved with two-dimensional ultrasound (2D US) [1–7]. The most recent 3D/4D US technology facilitates the 3D/4D US examinations even for the less trained sonographer and gives the examiner the opportunity to identif...
Purpose. The aim of this study was to determine the value of 3D and 3D Power Doppler sonography in the detection of tumor malignancy in breast lesions and to find new diagnostic criteria for differential diagnosis. Methods. One hundred and twenty five women with clinically or mammographically suspicious findings were referred for 3D Power Doppler ultrasound prior to surgery. Histological diagno...
In recent years medical ultrasound has experienced a rapid development in the quality of real-time 3D ultrasound (US) imaging. The image quality of the 3D volume that was previously possible to achieve within the range of a few seconds, is now possible in a fraction of a second. This technological advance offers entirely new opportunities for the use of US in the clinic. In our project, we inve...
Tissue deformation in ultrasound (US) imaging leads to geometrical errors when measuring tissues due the pressure exerted by probes. Such has an even larger effect on 3D US volumes as correct compounding is limited inconsistent location and geometry. This work proposes a patient-specified stiffness-based method tissue deformations robotic acquisitions. To obtain model, palpation performed at sa...
Ultrasound is a popular, cost-effective and non-invasive medical imaging modality. If an ultrasound probe is equipped with a 3D position sensor, the acquired images can be obtained in their spatial context, a technique commonly denoted “3D freehand ultrasound”. Combining ultrasound and a pre-operative Computed Tomography (CT) scan of the same patient can be beneficial for a number of clinical a...
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