Psn Murthy

Quality Model Driven Dynamic Analysis

Release managers often face a dilemma about the quality of software under delivery before a release. The presence of run-time errors such as memory leaks, buffer overflows, and deadlocks affects quality attributes such as efficiency, security, and reliability. Such errors are detected using dynamic analysis methods in practice. However, the dynamic analysis methods employed in practice are by and large ad hoc. It is essential to use dynamic analysis focusing on finding the right set of run-time errors in a software component that have the maximum impact on quality. There exists a need to identify quality attributes such as reliability, efficiency, and security that are important for a software component, or, a system. In this paper, a quality model driven dynamic analysis methodology is proposed. Various run-time errors that can arise during the execution of programs written in a language such as C++ are mapped to the respective quality attributes, thereby forming a basis for run-time error classification. Our experiences in the application of dynamic analysis on real projects are reported. The methodology reports the error findings mapped to the quality attributes along with their distributions. The reported findings help management understand quality problems and take appropriate corrective action.

Computerized Tomographic Assessment of Vocal Cord Palsy: Otolaryngologist’s Purview

Aims and objectives: Vocal cord palsy (VCP) can be definitely depicted on computed tomograpy (CT) scan by identifying key points at the level of true vocal cords and aryepiglottic folds. There are various VCP mimics and imaging shortcomings, and these can usually be circumvented by thoughtfully assessing the scan plan and level, and a diligent search for additional characteristics. Materials and methods: This retrospective study consisted of 10 cases of unilateral VCP, who all had been clinically diagnosed of VCP and further evaluated by CT. Preand postcontrast enhanced axial CT from skull base to aorto-pulmonary window were done and multiplanar three-dimensional reconstruction of images in coronal and sagittal planes along with volumerendered imaging was done. Results: Most consistent findings in VCP were thickening of ipsilateral aryepiglottic fold and medialization of ipsilateral aryepiglottic fold (100%), followed by dilation of ipsilateral pyriform sinus (90%) and dilatation of ipsilateral laryngeal ventricle (80%). Etiologic causes were ascertained in three cases: Thyroid malignancy, tuberculosis, and pyriform sinus malignancy. The last etiology was probably a VCP mimic. Conclusion: Radiologic evaluation is inarguably useful for determining the etiology of VCP, particularly for lesions within neck and thoracic cavity. Most crucial objective in assessing a case of VCP is to exclude the presence of a life-threatening primary lesion as the cause of VCP.

A Clinical Study of Laryngeal Cysts

Aim: To study cases of cysts of larynx and review the literature regarding precipitating factors and methods of treatment. Materials and methods: A retrospective study of eight cases of cysts of larynx in our hospital was carried out from July 2012 to December 2015. In all cases, diagnosis was made by video laryngoscopy and was treated by microlaryngeal surgery under general anesthesia (GA). Results: Eight patients with laryngeal cysts were identified, of which five were male and three were female. The mean age was ranging from 40 to 60. On examination, two were diagnosed with cysts from epiglottis, three from aryepiglottic folds, two from false vocal cords, and one from the ventricle. Conclusion: As saccular cysts are identified to be associated with neoplastic transformation, it is important to recognize the laryngeal saccular cyst and manage appropriately in its early stages and to differentiate it from other laryngeal cysts. Thorough diagnostic evaluation and surgical intervention necessitates the appropriate management.

Etiopathology of Hoarseness of Voice: A Clinical Study

Aim: Hoarseness of voice is generally due to change in quality of voice. The etiology of hoarseness of voice varies from benign conditions to malignant disease, hence should not be ignored. All cases of hoarseness of voice persisting for more than 3 weeks should be investigated for the underlying disease. It may indicate either malignancy of larynx or silent bronchogenic carcinoma. A retrospective study of cases of hoarseness of voice was done in MediCiti Institute of Medical Sciences for a period of 5 years. The etiopathological factors, age and duration of presentation, and type of condition were analyzed to arrive at different etiopathological conditions responsible at different age groups.

A Rare Benign Tumor of Vocal Cord: Myxofibrolipoma

Laryngeal lipomas are rare. Most of these arise from the aryepig lottic folds of which intrinsic tumors most frequently originate from the false vocal cords. The present case report describes a giant tumor arising from true vocal cord, and that too with a rare histopathology which revealed lipoma with myxomatous degeneration and fibrous changes. Clinical features, management and relevant literature are discussed.