Background: Diagnostic ultrasound has been used to detect human disease especially fetus abnormalities in recent decades. Although the harmful effects of diagnostic ultrasound on human have not been established so far, several researchers showed it has had bioeffects in cell lines and in experimental animals. Three-dimensional (3D), four-dimensional (4D), and color Doppler sonography are new te...

With the increasing role played by ultrasound in clinical diagnostics, ultrasound training in medical education has been becoming very important. The clinical routine is for ultrasound to be trained on real patients; therefore, monitored and guided examinations involving medical students are quite time constrained. To be realistically effective, a computerized ultrasound simulation would provid...

Echocardiography is the method of choice to establish a diagnosis and determine a treatment plan for patients with noncompaction of ventricular myocardium (NVM). The 2-dimentional echocardiography, 3-dimentional echocardiography, color Doppler echocardiography and contrast-enhanced echocardiography are of critical importance for diagnosis and family screening of NVM.

In this paper, a new technique for hiding the data of images has been proposed. This method uses 3-dimentional discrete cosine transformation scheme, along with 2-dimentional discrete cosine transformation. The method proposed in this paper hides two target images behind one cover image thereby increasing the data hiding capacity greatly. For the cause of security only the final stego-image is ...

The Maxwell action on the brane is obtained through a RandallSundrum dimentional reduction. Also, the self dual and the topologically massive actions for vectors in three dimensions can be obtained from Randall-Sundrum dimentional reduction. In the Randall-Sundrum mechanism[1], gravitons and scalar fields in D = d + 1 dimensions described by the Einstein-Hilbert and Klein-Gordon actions respect...

In tracking systems using phased array antenna, the adaptive-gain CX-P tracker combined with circular prediction has been proposed for maneuvering targets. However, tracking quality of the circular prediction filter degrades for highly maneuvering targets that continue to change the turning plane, since the circular prediction is calculated on the assumption that a target flies on the same plan...