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- In the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. Concentration of 2 ppm of iodide B. Concentration of quenchers C. The use of iodide D. Use of QuenchersShow all work including equations. Patient is treated AP/PA parallel-opposed fields. The fields are set up isocentrically on a 6 MV Linac, The patient's AP/PA separation is 25cm, and the field size at midplane is 14 x 26 cm (W x L). Calculate the AP field size on the skin.a. The scale of a spectrophotometer extends from 1 to 100% T, what are the values of these two extremes in absorbance? b. Convert the 98%T to absorbance
- 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 %The usual dose of digoxin for rapid digitalization is a total of 1.0mg, divide into two or more portion at intervals of 6 to 8 hours. How many milliliters of digoxin elixir containing 50mcg/mL would provide this dose?Which statement(s) describe(s) a microplate reader?A. It is spectrophotometerB. It can read the absorbance of one sample with adjustable path lengthC. It can handle multiple samples in parallelD. It will do all measurement jobs without our supervision a. A & B b. A, B & C c. A, B, C & D d. A e. A & C
- In a clinical setting, high relaxivity contrast agents are desirable. * O True O FalseWhat is the reason for the decrease in the ABS value over time when measuring in the spectrophotometer?The significance of using immersion oil when using 1OOX objective lens is The significance of using immersion oll when uskng 100X objective lens is: It will increase the contrast by having same refractive index as the lens, loss of light by refraction, reflection and diffraction is minimized. the specimens need not be killed, fixed and stained more light is captured for better illumination, allowing the specimen to fluoresce i. il. iii. iv. A light microscope should have the following features contrast Resolution magnification fluorescence ii. iv.
- In UV/Visible spectrophotometer analysis for a multicomponent system, there are only two dyes used in the mixture, the two proportions should be totalled to 1.0. but on finding You got 0.6 in total. Explain the reasons for the difference.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
