Answers
Question 1
All ACR Scans are done on what size matrix?
Correct Answer
256 X 256
Question 2
The ACR MRI phantom is a?
Correct Answer
Short, hollow cylinder of acrylic plastic closed at both ends.
Question 3
The inside end to end length of the phantom is?
Correct Answer
148 mm
Question 4
The inside diameter of the phantom is?
Correct Answer
190 mm
Question 5
The cylinder is filled with a solution of?
Correct Answer
Nickel chloride and sodium chloride
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, Question 6
The outside of the phantom has the words __________ and _________ etched into it as an
aid to orientate the phantom for scanning, as if it were a head.
Correct Answer
Nose and Chin
Question 7
The phantom portion of the MRI accreditation program requires the acquisition of?
Correct Answer
Sagittal localizer and 4 axial series of images.
Question 8
2 axial series of images are fully prescribed by the ACR in the scanning instructions.
Therefore, we refer to them as the?
Correct Answer
ACR Sequences or ACR Images
Question 9
The third and fourth series of axial images are based on the site's own protocols and
are referred to as the?
Correct Answer
Site Sequences or Site Images
Question 10
The sagittal localizer is a _______ mm thick, _________ ________ ________ _________
acquisition through the center of the phantom and is referred to simply as the
_____________.
Correct Answer
20mm
Single Slice Spin Echo
Localizer
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