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You should always position the cells or tissues in the center of view before increasing
magnification, because.
A.You know that the image will move right as you move the slide to the left.
B. You know that the image will move up as you move the slide down.
C.You know that the center of the field of view will be unchanged.
D. This is the best way to avoid breaking the slide with an objective.
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- You should always position the cells or tissues in the center of view before increasing magnification, because... You know that the image will move right as you move the slide to the left. You know that the image will move up as you move the slide down. You know that the center of the field of view will be unchanged. This is the best way to avoid breaking the slide with an objectiveCHOOSE FROM THE FOLLOWINGYou should always position the cells or tissues in the center of view before increasingmagnification, because.A. You know that the image will move right as you move the slide to the left.B. You know that the image will move up as you move the slide down.C. You know that the center of the field of view will be unchanged.D. This is the best way to avoid breaking the slide with an objective.Which statement is NOT true about gradient echo sequence: O a. Produces T2 weighted image O b. Uses flip angle smaller than 90 O c. Blood and calcium appear dark O d. has short scan time
- The field of view (FOV) is the entire circular image we see when looking into the eyepiece. The diameter of the FOV gets smaller as we increase magnification. It can be measured by using a stage micrometer like a ruler, measuring from edge to edge. Notice that the stage micrometer is 1000 microns (µm) in length, and the field of view under the lowest magnification is 5000 µm. Describe how we measure it?Discuss the alternative means of analyzing data of scientific visualization. What are some of the applications of scientific visualization other than the medical imaging examples in the book?a. Do you open both eyes or close one eye when viewing a specimen under a microscope? Why? Why not? b. In using a compound microscope, do you start with the low power objective (LPO) or the high power objective (HPO)? Why or Why not? c. When using 60X, do you it together with the coarse adjustment knob or fine adjustment knob? d. Why must you slowly turn the fine adjustment knob? e. Is natural light or is artificial light used when using the microscope?
- These cells are being viewed under high power. Use the length of just one cell to estimate the number of cells that can fit into the FOV. Scanning power objective = 5X; Low power objective = 40X; High power objective = 100X; Eyepiece = 10X; Low power field of view (FOV) = 1.5 mmAsapEndoscopy refers to medical examination of the inside of a human body by means of inserting a lighted optical instrument through a body opening. Fiberscopes operate in the visible wavelengths and consist of two major components. One component consists of a bundle of fibers that illuminates the examined area, and the other component transmits the images of the examined area to the eye of the physician or to some display device. Investigate the design of fiberscopes or the fiber-optic endoscope, and discuss your findings in a brief report.
- Photoelectric effect increases the _________ in an x-ray image while Compton scattering increases the _________ . Therefore, _________ is not desirable in diagnostic imaging. Select one: a. image noise; radioactivity; photoelectric effect b. image contrast; image noise; Compton scattering c. radioactivity; image noise; Compton scattering d. image noise; image contrast; photoelectric effectWhat is the rule for determining total magnification? A. Ocular lens magnification + objective lens magnification = total magnification B. Ocular lens magnification - objective lens magnification = total magnification C. Ocular lens magnification x objective lens magnification = total magnificationWhile viewing an object under low power you see a small organism at the edge of the field of vision. You move to the high-power lens, but the organism is no longer visible. What has occurred? How do you correct it?