Ravindra Mohan

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Gating is a relatively new and potentially useful therapeutic addition to external beam radiotherapy applied to regions affected by intra-fraction motion. The impact was of gating on treatment margins, image artifacts, and volume and positional accuracy was investigated by CT imaging of sinusoidally moving spheres. The motion of the spheres simulates target(More)
PURPOSE To report an interesting case of adult onset Langerhans cell histiocytosis in a 41-year-old male with clinicopathological correlation. DESIGN Interventional case report. MATERIALS AND METHODS A 41-year-old male presented with an ill-defined mass occupying the temporal quadrant of the left orbit. Computerized tomography revealed an ill-defined(More)
The temporal distribution patterns of the predominantly occurring postlarvae and juvenile shrimps in the mangrove and associated habitats of Muthupet, India were investigated for two years from February 1984 to January 1986. Among the eight commercially important species recorded, Penaeus indicus H. Milne Edwards, P. merguiensis De Man, P. monodon Fabricus(More)
In this study the dosimetric characteristics of 120-leaf multileaf collimators (MLCs) were evaluated for 6-MV and 18-MV photon beams. The dose rate, percentage depth dose, surface dose, dose in the build-up region, beam profile, flatness, symmetry, and penumbra width were measured using three field-defining methods: (i) 'Jaw only', (ii) 'MLC only', and(More)
1Thermal Engineering, IES College of Tech. Bhopal, Madhya Pradesh, India. 2Assistant Professor, Dept. of Mechanical Eng., IES College of Tech. Bhopal, Madhya Pradesh, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract In modern life as we seen that the(More)
In this study, the dosimetric characteristics of multileaf collimators (MLCs) with 120 leaves and 80 leaves were evaluated. The dose rate, percentage depth dose, surface dose, dose in the build-up region, beam profile, flatness, symmetry, and penumbra width were measured by three field-defining methods: (1) "Jaw only", (2) "MLC only", and (3) "MLC + Jaw",(More)
Many researchers and project managers have attempted to improve project performance by applying new philosophies such as lean principle, just-in-time, pull scheduling, and last planner. However, very little research has been conducted on setting definite quantitative goals for performance improvement while considering the defect rate involved in the(More)
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