A Review on Implementation of Image Processing Algorithms using Hardware Software Co-simulation

Edge detection is necessary tool for extraction of information for further image processing operation. Many computer vision application use edge detectors as primary operators before high level image processing. Several algorithms are available for edge detection which makes use of derivative approach. Roberts, Prewitt , sobel, canny are some of the examples of edge detection methods. In this project edge detection algorithms are to be implemented over FPGA board. Proposed architecture gives an alternative by using a graphical user interface which is developed by combining MATLAB, Simulink and XSG tool. Prototype of Application Specific Integrated Circuit [ASIC] can be obtained by FPGA based implementation of edge detection algorithm. Comparative analysis using software and hardware is to be done. Instead of using traditional approach of programming FPGA, Xilinx System Generator [XSG] is used for programming and modeling FPGA. XSG has an integrated design flow to move directly to the bit stream file from simulink design environment which is necessary for programming the FPGA. Advantage of using FPGA is power efficient circuits can be fabricated; it has large memory and superior parallel computing capacity. With use of FPGA, design procedure becomes more flexible. DOI: 10.17762/ijritcc2321-8169.15010

Round Cell Vaginal Malignant Melanoma : A rare entity

Malignant melanoma is predominantly a skin disease but in rare instances it may occur at other sites. A vaginal melanoma is a rare clinical entity and the round cell type is an uncommon variant. Although the present case was clinically diagnosed as a urethral caruncle, on histopathological examination and immunostaining it was diagnosed as a round cell pigmented malignant melanoma. The patient refused radical surgery and was given a full course radiotherapy treatment but died a year later. Malignant vaginal melanoma carries a very poor prognosis even when lesion is localised at the time of presentation. The five-year survival rate ranges from 10–20% with the prognosis being influenced by tumour size. A tumour size ≥3cm has a poor prognosis. Age, mitotic count, stage, and location of the lesion do not influence survival rates

A study of clinico-demographic profile and ventilatory pulmonary function tests in type 2 diabetes mellitus

Background: Type 2 Diabetes Mellitus (DM) is a non-communicable disease. DM produces damage in small blood vessels characterized by morphologic and biochemical alterations of the capillary basal lamina. These abnormalities have been observed in several organs including the lung. As the prevalence of diabetes is rapidly increasing, it would be important to study pulmonary functions in this sub group.Methods: The present observational study carried out at medicine department. It includes previously diagnosed type 2 DM patients between 31 to 50 years of age, non-smoker, non-pregnant with no major respiratory illness. Ventilatory Pulmonary Function Test (VPFT) which includes FVC, FEV1 and FEV1% were studied in all selected participants. VPFT categorized as per American Thoracic Society (ATS). All collected data analysed using Microsoft Excel 2010.  Results: The total of 55 previously diagnosed Type 2 DM cases was recruited. 26 (47.2 %) & 29 (52.7 %) were male & female respectively. 21 (38.2 %) has duration of DM more than 5. 11 (20 %) & 5 (9 %) had neuropathy and retinopathy respectively. 29 (52.7 %) had abnormal pulmonary function test.  The Mean FVC (84.11 ± 14.94), Mean FEV1 (84 ± 13.72) & Mean FEV1% was (100.05 ± 7.32) among the study participants.  29 (100.0 %) were restrictive type of abnormality. Conclusion: The reduced lung function is likely being a complication of diabetes mellitus. Lung functions needs to be checked periodically.

Standard Splenic Volume Estimation in North Indian Adult Population: Using 3D Reconstruction of Abdominal CT Scan Images

A prospective study was carried out to establish normative data for splenic dimensions in North Indian population and their correlation with physical standard on abdominal CT of 21 patients aged between 20 and 70 years having no splenic disorders. Splenic volume was measured by two methods—volume and surface rendering technique of Able 3D doctor software and prolate ellipsoid formula. Volumes measured by both the techniques were correlated with their physical standards. Mean splenic volume was 161.57 ± 90.2 cm3 and range 45.7–271.46 cm3. The volume of spleen had linear correlation with body height (r = 0.512, P < .05). Splenic volume (cm3) = 7 × height (cm) − 961 can be used to generate normal standard volume of spleen as a function of body height in North Indian population (with 95% confidence interval). This formula can be used to objectively measure the size of the spleen in adults who have clinically suspected splenomegaly

Autoimmune Pancreatitis: Disease Evolution, Staging, Response Assessment, and CT Features That Predict Response to Corticosteroid Therapy

Purpose:To evaluate the evolution of morphologic features of autoimmune pancreatitis (AIP) at computed tomography (CT) and to identify imaging features that can predict AIP response to corticosteroid therapy (CST). Materials and Methods: This HIPAA-compliant retrospective study had institutional review board approval. From among a cohort of 63 Patients with AIP, 15 Patients (12 men, three women, mean age, 64.7 years, age range, 30-84 years) who underwent sequential CT examinations before treatment were included to assess the evolution of disease by reviewing pancreatic, peripancreatic, and ductal changes. Of these Patients, 13 received CST and underwent posttreatment CT, these CT studies were evaluated to determine if there were imaging features that could predict response to CST. Results: The disease evolved from changes of diffuse (14 of 15 Patients) or focal (one of 15 Patients) parenchymal swelling, peripancreatic stranding (10 of 15 Patients), halo (nine of 15 Patients), pancreatic duct changes (15 of 15 Patients), and distal common bile duct narrowing (12 of 15 Patients) to either resolution or development of ductal strictures and/or focal masslike swelling. In 13 Patients treated with CST, favorable response to treatment was seen in those with diffuse pancreatic and peripancreatic changes. Suboptimal response was seen in Patients with ductal stricture formation (two of 13 Patients) and in those in whom focal masslike swellings persisted after resolution of diffuse changes (seven of 13 Patients). Conclusion: CT features like diffuse swelling and halo respond favorably to CST and likely reflect an early inflammatory phase, whereas features like ductal strictures and focal masslike swelling are predictive of a suboptimal response and symbolize a late stage with predominance of fibrosis

Racial Differences in the Distribution of Posterior Circulation Occlusive Disease

We Compared Clinical and Arteriographic Features in 27 White and 24 Black Patients with Symptomatic Posterior Circulation Occlusive Disease. the Degree of Arterial Stenosis Was Measured Independently by Two Examiners at 12 Sites within the Vertebrobasilar Territory. Racial Comparisons Were Made based Upon the Distribution of Extra- and Intracranial Occlusive Lesions and Symptomatic Sites of the Lesions. White Patients Had Significantly More Angina Pectoris, More Lesions of the Origin of the Left Vertebral Artery and More High-Grade Lesions of the Extracranial Vertebral Arteries. Black Patients Had Significantly Higher Mean Diastolic Blood Pressure, More Diabetes Mellitus, More Lesions of the Distal Basilar Artery, More High-Grade Lesions of Intracranial Branch Vessels and More Symptomatic Intracranial Branch Disease. Race Was Found to Be the Only Factor Increasing the Risk of Intracranial Posterior Circulation Occlusive Disease. Knowledge of the Contribution of Race to the Distribution of Posterior Circulation Lesions Will Help Guide Evaluation and Treatment Strategies for Patients with Vertebrobasilar Occlusive Disease. © 1985 American Heart Association, Inc

Addison's disease presenting with idiopathic intracranial hypertension in 24-year-old woman: a case report

<p>Abstract</p> <p>Introduction</p> <p>Idiopathic intracranial hypertension can rarely be associated with an underlying endocrine disorder such as Cushing's syndrome, hyperthyroidism, or with administration of thyroxine or growth hormone. Though cases of idiopathic intracranial hypertension associated with Addison's disease in children have been reported, there is only one documented case report of this association in adults. We describe a case of an acute adrenal insufficiency precipitated by idiopathic intracranial hypertension in a Caucasian female.</p> <p>Case presentation</p> <p>A 24-year-old Caucasian woman was acutely unwell with a background of several months of generalised fatigue and intermittent headaches. She had unremarkable neurological and systemic examination with a normal computerised tomography and magnetic resonance imaging of the brain. Normal cerebrospinal fluid but increased opening pressure at lumbar puncture suggested intracranial hypertension. A flat short synacthen test and raised level of adrenocorticotrophic hormone were consistent with primary adrenal failure.</p> <p>Conclusion</p> <p>Addison's disease can remain unrecognised until precipitated by acute stress. This case suggests that idiopathic intracranial hypertension can rarely be associated with Addison's disease and present as an acute illness. Idiopathic intracranial hypertension is possibly related to an increase in the levels of arginine vasopressin peptide in serum and cerebrospinal fluid secondary to a glucocorticoid deficient state.</p

Observation of Topological Surface State in High Temperature Superconductor MgB2

The hunt for the benchmark topological superconductor (TSc) has been an extremely active research subject in condensed matter research, with quite a few candidates identified or proposed. However, low transition temperatures (Tc) and/or strong sensitivity to disorder and dopant levels in known TSc candidates have greatly hampered progress in this field. Here, we use Angle-resolved Photoemission Spectroscopy (ARPES) to show the presence of Dirac Nodal Lines (DNLs) and the corresponding topological surface states (TSS's) on the [010] faces of the Tc=39K s-wave BCS superconductor MgB2. Not only is this nearly triple the current record of superconducting Tc among all candidate TSc's, but the nature of these DNL states should make them highly tolerant against disorder and inadvertent doping variations. This makes MgB2 a promising high temperature platform for the study of topological superconductivity

Experimental electronic structure of the electrically switchable antiferromagnet CuMnAs

Tetragonal CuMnAs is a room temperature antiferromagnet with an electrically reorientable N\'eel vector and a Dirac semimetal candidate. Direct measurements of the electronic structure of single-crystalline thin films of tetragonal CuMnAs using angle-resolved photoemission spectroscopy (ARPES) are reported, including Fermi surfaces (FS) and energy-wavevector dispersions. After correcting for a chemical potential shift of $\approx-390$ meV (hole doping), there is excellent agreement of FS, orbital character of bands, and Fermi velocities between the experiment and density functional theory calculations. Additionally, 2x1 surface reconstructions are found in the low energy electron diffraction (LEED) and ARPES. This work underscores the need to control the chemical potential in tetragonal CuMnAs to enable the exploration and exploitation of the Dirac fermions with tunable masses, which are predicted to be above the chemical potential in the present samples.Comment: Submitted to Physical Review X. 20 pages. 9 figure

Universal Non-Polar Switching in Carbon-doped Transition Metal Oxides (TMOs) and Post TMOs

Transition metal oxides (TMOs) and post-TMOs (PTMOs), when doped with Carbon, show non-volatile current-voltage (I-V) characteristics, which are both universal and repeatable. We have shown spectroscopic evidence of the introduction of carbon-based impurity states inside the existing larger bandgap effectively creating a smaller bandgap which we suggest could enable Mott-like correlation effect. Our findings indicate new insights for yet to be understood unipolar and nonpolar resistive switching in the TMOs and PTMOs. We have shown that device switching is not thermal-energy dependent and have developed an electronic-dominated switching model that allows for the extreme temperature operation (from 1.5 K to 423 K) and state retention up to 673 K for a 1-hour bake. Importantly, we have optimized the technology in an industrial process and demonstrated integrated 1-transistor/1-resistor (1T1R) arrays up to 1 kbit with 47 nm devices on 300 mm wafers for advanced node CMOS-compatible correlated electron RAM (CeRAM). These devices are shown to operate with 2 ns write pulses and retain the memory states up to 200 C for 24 hours. The collection of attributes shown, including scalability to state-of-the-art dimensions, non-volatile operation to extreme low and high temperatures, fast write, and reduced stochasticity as compared to filamentary memories such as ReRAMs show the potential for a highly capable two-terminal back-end-of-line non-volatile memory.Comment: 28 pages, 17 figures, accepted in APL Material