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The image seen in question 25 was obtained using a SFOV of 25cm and a DFOV of 12cm. A year later a radiologist wants to compare a lesion of the parotid gland recently found on a different soft tissue neck scan with this set of images. The radiologist has requested that you reconstruct this year-old set of data to show all of the neck tissues (24 cm). Given the parameters used in the original image and the year later request, can the data set be manipulated to fulfill the radiologist’s request?

Which of the following image rendering processes produces a new set of images in a different orientation?

If the image seen in question 25 could be reconstructed to show more of the neck anatomy, what type of data is necessary for that to occur?

Which of the following display options is similar to a ruler in that it can measure distance on a CT image?

Given the WW of 500 and WL of 0 the resulting image would have a short gray scale and high contrast. Which of the following changes would make the resulting image have a longer gray scale?

Which of the following describes a process of producing a new set of images using raw data after the primary reconstruction has already been accomplished?

Which of the following represents the Hounsfield’s established unit for Bone?

Which description best defines noise?

Of the following ROI measurements, which is the most accurate measurement of a particular tissue?

If electrode B is the anode, what half reaction occurs in this compartment?  In which direction do the electrons flow? What is labeled “e”?