Interventional MRI (IMRI) has entered into a new stage in which computer-based techniques play an increasing role in planning, monitoring, and controlling the procedures. The use of interactive imaging, navigational image guidance techniques, and image processing methods is demonstrated in various applications. The integration of intraoperative MRI guidance and computer-assisted surgery will gr...

We study the image of a transfer homomorphism in the stable homotopy groups of spheres. Actually, we show that an element of order 8 in the 18 dimensional stable stem is in the image of a double transfer homomorphism, which reproves a result due to P J Eccles that the element is represented by a framed hypersurface. Also, we determine the image of the transfer homomorphism in the 16 dimensional...

A non-rigid ultrasound image registration method is proposed in this work using the intensity as well as the local phase information under a variational framework. One application of this technique is to register two consecutive images in an ultrasound image sequence. Although intensity is the most widely used This research was partially supported by the Ministry of Knowledge Economy, Korea, un...

Background: To reduce uncertainties of patient positioning, the Computerized Tomography (CT) images acquired at the treatment planning time can be compared with those images obtained during radiation dose delivery. This can be followed during dose delivery procedure as Image Guided radiotherapy (IGRT) to verify the prescribed radiation dose delivery to the target as well as to monitor ...

Background: We investigated whether the lungheart ratio parameter (LHR) can be used to identify the optimum cut off frequency for Butterworth filter in 99mTc myocardial SPECT imaging. Materials and Methods: This study involved a cardiac phantom system consisting of cardiac insert in which 1.10 cm cold defect was inserted into its myocardium wall and filled with 4.0 μCi/ml (0.148 MBq/ml...

Reconstruction is part of a set of morphological image transformations [4] referred to as geodesic [1]. In the binary case, it simply extracts the connected components of a binary image I which are “marked” by an image J contained in I . Reconstruction can be extended to the grayscale case, and the first goal of this paper is to provide a formal definition in this framework. Available technique...

2. Escobar A. The pathology of neurocysticercosis. In cysticercosis of Central nervous system. Placio E Robriguez Carabasal I, Taveras J (eds). Spring field IL; CC Thomas, 1983;27-54. Fig. 2 : MRI brain sagittal section hypointense T1 image showing multiple vesicular stage neurocysticercosis Fig. 1 : MRI brain transverse section hypointense T1 image showing multiple vesicular stage neurocystice...

Image segmentation with specific constraints has found applications in several areas such as biomedical image analysis and data mining. In this paper, we study the problem of simultaneous detection of both borders of a doughnut-shaped and smooth objects in 2-D medical images. Image objects of that shape are often studied in medical applications. We present an O(IJU(U-L)logJUlog(U-L)) time algor...

w w w . i j c s t . c o m Abstract Image enhancement in Spatial Domain is the process of improving the quality of a digitally stored image by manipulating the image pixel values with the help of software. Manipulation of pixel values includes point operations, where each pixel is modified according to a particular equation that is not dependent on other pixel values so that result is more suita...

Visual perception studies typically focus either on optic flow structure or image structure, but not on the combination and interaction of these two sources of information. Each offers unique strengths in contrast to the other's weaknesses. Optic flow yields intrinsically powerful information about 3D structure, but is ephemeral. It ceases when motion stops. Image structure is less powerful in ...