The use of MEMS to study the effect of mechanical compression on neurogenesis has been demonstrated. Polydimethylsiloxane- (PDMS)-based stretchable platforms were used on neurosphere assay to investigate the role of m...
详细信息
Experiments and complimentary simulations are presented to demonstrate the size-dependent infiltration and detection of variable length nucleic acids in porous silicon with controllable pore diameters in the range of ...
详细信息
Online society has triggered social computing which is an interdisciplinary that takes a computational approach to the study and modelling of social interactions and communications. How to measure this field's sta...
详细信息
Music Information Retrieval (MIR) is an interdisciplinary field that facilitates indexing and content-based organization of music databases. Music classification and clustering is one of the major topics in MIR. Music...
详细信息
The clinical data stored in the health information system can be categorized as two types including structuralized data and non-structuralized ones. In the paper, a data extraction system is developed to assist data r...
详细信息
Artificial Immune Systems (AISs) are composed of techniques inspired by immunology. The clonal selection principle ensures the organism adaptation to fight invading antigens by an immune response activated by the bind...
详细信息
Discharge summary note is one of important clinical data in medical records, and it concisely summarizes the patient's stay during hospitalization. In this article, we use web-based architecture in developing a ne...
详细信息
In the paper, we classify cancer with the Leukemia cancer of medical diagnostic data. Information gain has been adapted for feature selections. A Leukemia cnacer model that utilizes Information Gain based on Support V...
详细信息
This paper presents a comparison among different strategies to coordinate the use of heterogeneous wireless sensors aimed for area surveillance. The heterogeneity among the sensor nodes is related to their sensing and...
详细信息
Purpose: For 3D transrectal ultrasound (TRUS) guided prostate biopsy, we evaluate the utility of image-similarity metrics for comparing real-time 2D- TRUS video frames to pre-acquired 3D-TRUS images in order to detect...
详细信息
Purpose: For 3D transrectal ultrasound (TRUS) guided prostate biopsy, we evaluate the utility of image-similarity metrics for comparing real-time 2D- TRUS video frames to pre-acquired 3D-TRUS images in order to detect misalignment due to prostate motion and deformation. Methods: The experiments were conducted on retrospective data of 3D TRUS images from 3 subjects at the start of the biopsy procedure using a mechanically assisted 3D TRUS-guided biopsy system. For each subject, 2D TRUS images were acquired immediately prior to biopsy needle insertion. In this work, simulation and real human studies were performed to explore the utility of two image similarity metrics (normalized cross correlation and mutual information) for the detection of prostate motion during the biopsy procedure. Rigid prostate motion was simulated by translating the 3D volume in the direction orthogonal to the ground truth image, and by rotating the 3D volume around the long axis of the TRUS probe. We calculated similarity metrics for each of these simulated motion images and its corresponding ground truth image. In the human study, we performed preliminary testing of a 2D-to-3D rigid intensity-based registration method and measured its error by calculating its target registration error (TRE), based on identified anatomically homologous intrinsic fiducial pairs. Results: The registration gave an overall TRE of 2.1 mm, and both the mutual information and normalized cross correlation metrics have a convex shape near the optimal plane. Conclusions: The convex metric profiles encourage the use of intensity-based registration to compensate for motion and deformation of the prostate during TRUS-guided biopsy. The gradient of the mutual information curves are generally higher, making this metric more sensitive to the detection of small misalignments. The normalized cross correlation has a higher capture range, making it more suitable to be used in an image registration where the initialization may be
暂无评论