نتایج جستجو برای: dimensional ultrasound
تعداد نتایج: 503683 فیلتر نتایج به سال:
background: objective: the objective of the present study was to evaluate the application of two dimensional ultrasound (2-dus) and real time three dimensional ultrasound (3-dus) in differentiating various type of septated uterus. hysteroscopy confirmation was assigned as the gold standard. materials and methods: this retrospective study was performed among 215 infertile women with suspecte...
The current practice of physical diagnosis is dependent on physician skills and biases, inductive reasoning, and time efficiency. Although the clinical utility of echocardiography is well known, few data exist on how to integrate 2-dimensional screening "quick-look" ultrasound applications into a novel, modernized cardiac physical examination. We discuss the evidence basis behind ultrasound "si...
Contrast enhancement by microbubble infusion has proven its applicability in the field of diagnostic ultrasound. Recent studies also indicate a therapeutic effect of the combined use of ultrasound and microbubbles. Results from animal studies demonstrate that diagnostic ultrasound in combination with intravenous microbubbles can dissolve thrombi. So far, this effect has never been tested in pat...
OBJECTIVE Three-dimensional (3-D) ultrasound is an intraoperative imaging modality used in neuronavigation as an alternative to magnetic resonance imaging (MRI). This article summarizes 4 years of clinical experience in the use of intraoperative 3-D ultrasound integrated into neuronavigation for guidance in brain tumor resection. METHODS Patients were selected for inclusion in the study on th...
The interaction between sound and ultrasound waves in a weakly compressible viscous liquid with gas bubbles is considered. Using the method of multiple scales oneand two-dimensional nonlinear interaction equations are derived. The degeneracy of the interaction is found in bubbly fluids. This phenomenon lies in the fact that the interaction coefficients vanish at a certain frequency of ultrasoun...
We employ an ultrasound wave field generated by one or more ultrasound transducers to organize large quantities of nanoparticles dispersed in a fluid medium into two-dimensional user-specified patterns. To accomplish this, we theoretically derive a direct method of calculating the ultrasound transducer parameters required to assemble a user-specified pattern of nanoparticles. The computation re...
This paper describes a new method for coupling ultrasound images with tree-dimensional electromagnetic data, to recover larger parts of the tongue during speech production. The electromagnetic data is superimposed on ultrasound images after spatial and temporal calibration. Successful fusion results are presented on various speech sequences. A complete setup for evaluation of the electromagneti...
[2] King DL, King DL Jr, Shao MY. Three-dimensional spatial registration and interactive display of position and orientation of realtime ultrasound images. J Ultrasound Med 1990; 9: 525-32. [3] Pandian NG, Roelandt J, Nanda NC et al. Dynamic threedimensional echocardiography: Methods and clinical potential. Echocardiography 1994; 11: 237-59. [4] Marx GR, Fulton DR, Pandian NG et al. Delineation...
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