Explain the underlying physical principles in the creation of image contrasts for the following two processes of image contrasts for the following two procedures. (a) Magnetic resonance tomography (b) X-ray-computed tomography
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- Consider a bi convex lens with radius of curvatures |R1| = 30 mm and |R2| = 180 mm, ct = 5 mm and glass is N-BK7. This is used as camera lens in order to image a man who is at 1 km away from the camera. We want to resolve 10 cm on his body. Assume that λ = 550 nm. Using zemax, determine the MTF value for the resolution of R = 80 lp / mm in image plane which is placed at paraxial focus. (Hint: First, find the diameter of the lens) Which one: a.32.1 % b.28.7 % c.12.3 % d.58.5 % e.46.8 % f.57.2 % g.20.9 % h.15.6 %In spiral CT, the table feed is 3 mm, and the slice thickness has been selected to be 2 mm. What is the pitch value for this acquisition? Using this setting, how long will it take to image an anatomical range of 15 cm? The CT gantry rotation time is 1.2 s, i.e., 1 rotation per 1.2 s.The basic component of a fluoroscopic x-ray system suitable for interventional procedures consist of a generator,x-ray tube and housing including collimator and filtration,patient table,anti-scatter grid and an image receptor.Describe the key design features and function of each of these component and briefly discuss the role of automatic brightness control
- What is the difference between the T1 and T2 in MRI?Discuss about What is contrast harmonic Imaging?Name two radioisotopes used within the medical imaging processes, one administered by inhalation and one used by intravenous injection. For both of these radioisotopes, what are their half-life and what is the relevance of that to why it is used? What are both of these specific use in diagnostic imaging?What are they treating?
- Using the Field of View (FoV) formula: (Low Magnification/High Magnification)= (High Field of View/Low Field of View) determine the FoV in microns for all other objective lenses (4x,10x,40,100x) given that the diameter of the 4X scanner FoV is 3.2 mm Please, explain with the formula how it was used and how values were addedThe basic components of a fluoroscopic x-ray system suitable for interventional procedures consists of a generator,x-ray tube and housing including collimator and filtration,patient table,anti-scatter grid and an image receptor.Describe the key design features and function each of these components and briefly discuss the role of automatic brightness controlUse MS Excel to plot and determine the terms being asked: Please insert the excel file, thank you For each V (mmol/min), determine the value of [S] (mM) if Vmax = 5 mmol/min. Show your calculations. Using MS Excel, plot [S] (mM) versus V (mmol/min). Draw a line corresponding to the given Vmax parallel the x-axis and extend your plotted line to show its approach to Vmax. Provide your final plot [S] (mM) V (mmol/min) 10 1.2 1.7 2.1 2.2 2.5 Determine the values of Km and Vmax for the decarboxylation of β-keto acid given the following data. Please show and label your plot. Show your calculations and box your final [S] in mol/l V in mM/ min 2.500 0.588 1.000 0.500 0.714 0.417 0.526 0.370 0.250 0.256