Fast Mesh-Based Medical Image Registration

In this paper a fast triangular mesh based registration method is proposed. Having Template and Reference images as inputs, the template image is triangulated using a content adaptive mesh generation algorithm. Considering the pixel values at mesh nodes, interpolated using spline interpolation method for both of the images, the energy functional needed for image registration is minimized. The minimization process was achieved using a mesh based discretization of the distance measure and regularization term which resulted in a sparse system of linear equations, which due to the smaller size in comparison to the pixel-wise registration method, can be solved directly. Mean Squared Difference (MSD) is used as a metric for evaluating the results. Using the mesh based technique, higher speed was achieved compared to pixel-based curvature registration technique with fast DCT solver. The implementation was done in MATLAB without any specific optimization. Higher speeds can be achieved using C/C++ implementations.Comment: Accepted manuscript for ISVC'201

Magnetism and spin-orbit coupling in Ir-based double perovskites La(2−x_(2-xSrx_xCoIrO6_6

We have studied Ir spin and orbital magnetic moments in the double perovskites La$_{2-x}$Sr$_x$CoIrO$_6$ by x-ray magnetic circular dichroism. In La$_2$CoIrO$_6$, Ir$^{4+}$ couples antiferromagnetically to the weak ferromagnetic moment of the canted Co$^{2+}$ sublattice and shows an unusually large negative total magnetic moment (-0.38\,$\mu_{\text B}$/f.u.) combined with strong spin-orbit interaction. In contrast, in Sr$_2$CoIrO$_6$, Ir$^{5+}$ has a paramagnetic moment with almost no orbital contribution. A simple kinetic-energy-driven mechanism including spin-orbit coupling explains why Ir is susceptible to the induction of substantial magnetic moments in the double perovskite structure.Comment: 6 pages, 8 figure

Application of Photogrammetry in Biomedical Science

Peer reviewedPostprin

Grouped Multilevel Space-Time Trellis Codes

Space-time trellis codes (STTCs) generally provide coding and diversity gains, but only transmit one data symbol per time slot. Using higher order modulations incurs high decoding complexity and lengthy code searches. Multi-layer schemes using multiple STTCs over subgroups of antennas provide higher throughput, but require as many receive as transmit antennas and have reduced diversity gains. Here, we develop grouped multilevel STTCs that can provide the high throughput of multi-layered schemes while realizing larger diversity gains. Any number of receive antennas can be used. An example is shown that achieves 6 bits/sec/Hz using 16-QAM and 4 transmit antennas

Detection of Mutations in Exons 5 and 8 of Tumor Suppressor Tp53 Gene in Patients with Squamous Cell Carcinoma of Lung Hospitalized in Afzalipour Hospital, Kerman, Iran

Abstract: Introduction: Despite improvements in the diagnosis and treatment of lung cancer in the past two decades, it has remained the most common cause of death from cancer worldwide. Among all genes that are mutated in lung cancer, TP53 located on chromosome 17P13/1 has a significant diagnostic and prognostic value. TP53 mutations have been extensively studied in lung cancer and TP53 mutational spectra have been used for finding the origin(s) and mechanisms of these mutations in lung cancer development. The present study was conducted to investigate the TP53 mutations in patients with Non- small cell lung cancer hospitalized during 1997-2005 in Afzalipour Hospital, Kerman, Iran. Method: Formalin- fixed, Paraffin- embedded tissues from lung cancer patients undergone surgery between 1997 to 2005 were evaluated. The mutational status of the TP53 gene (exons 5 & 8) was screened by polymerase chain reaction (PCR) analysis followed by sequencing. Results: Of all cases of squamous cell carcinoma, 73 mutations were found in Exon 5 (in 18 cases) and 47 mutations in Exon 8 of TP53 gene (in 15 cases). we identified mutation hot spot at codons 6, 14, 25 of exon 5 and codons 2, 27, 35 of exon 8 of TP53 gene. Tansversions (G to T, A to T and G to C) and deletion mutations were the most in both exons 5 and 8. The incidence of G to T transversion mutations did not significantly differ between Exons 5 and 8. Conclusion: Higher prevalence of mutations in TP53 gene in the present study comparing to previous studies may be due to genetic, environmental and some epidemiological factors such as diet and life style of studied subjects. Keywords: TP53Gene, Squamous cell carcinoma, Mutatio

Detection of Mutations in Exons 5 and 8 of Tumor Suppressor Tp53 Gene in Patients with Squamous Cell Carcinoma of Lung Hospitalized in Afzalipour Hospital, Kerman, Iran

Abstract: Introduction: Despite improvements in the diagnosis and treatment of lung cancer in the past two decades, it has remained the most common cause of death from cancer worldwide. Among all genes that are mutated in lung cancer, TP53 located on chromosome 17P13/1 has a significant diagnostic and prognostic value. TP53 mutations have been extensively studied in lung cancer and TP53 mutational spectra have been used for finding the origin(s) and mechanisms of these mutations in lung cancer development. The present study was conducted to investigate the TP53 mutations in patients with Non- small cell lung cancer hospitalized during 1997-2005 in Afzalipour Hospital, Kerman, Iran. Method: Formalin- fixed, Paraffin- embedded tissues from lung cancer patients undergone surgery between 1997 to 2005 were evaluated. The mutational status of the TP53 gene (exons 5 & 8) was screened by polymerase chain reaction (PCR) analysis followed by sequencing. Results: Of all cases of squamous cell carcinoma, 73 mutations were found in Exon 5 (in 18 cases) and 47 mutations in Exon 8 of TP53 gene (in 15 cases). we identified mutation hot spot at codons 6, 14, 25 of exon 5 and codons 2, 27, 35 of exon 8 of TP53 gene. Tansversions (G to T, A to T and G to C) and deletion mutations were the most in both exons 5 and 8. The incidence of G to T transversion mutations did not significantly differ between Exons 5 and 8. Conclusion: Higher prevalence of mutations in TP53 gene in the present study comparing to previous studies may be due to genetic, environmental and some epidemiological factors such as diet and life style of studied subjects. Keywords: TP53Gene, Squamous cell carcinoma, Mutatio

IEEE 6th CAS Symp. on Emerging Technologies: Mobile and Wireless Comm. FPGA implementation of space-time block coding systems

Absbact-Io this paper, tbe implementation of space-time block coding systems i s discussed, particularly through the use of programmable logic such as FPGAs. The rationale for choice of such devices in preference to DSPs is discussed followed by an analysis of tbe design and development p r e s s and the methodologies employed in the design process. An example space-time system, time-revelsal space-time block mding (TR-STBC) is discussed and implementation described

Transparent magnetic oxide thin films of Fe3O4 on glass

Transparent magnetic oxide (TMO) thin films of magnetite (Fe3O4) were grown on top of a (Zn,Al)O transparent conducting oxide on a glass substrate. The polycrystalline magnetite thin films show the typical Raman spectrum of Fe3O4, a sharp Verwey transition at 120 K and hysteretic behavior. The highest achieved average transmittance in the visible range (400–800 nm) for the entire multilayer was slightly below 80%. TMOs permit the inclusion of magnetic functionalities into transparent electronics. Our results show that TMOs can be successfully used to add magnetic functionalities to transparent conducting oxides