American Science and Engineering, Inc.
MINI
Z
Operator Manual 342-9000-1 Rev. B ECCN EAR99
7-1
Chapter
7
Advanced Scanning
This chapter describes the procedures supporting performance of a scan. It introduces techniques to
ensure distortion-free imaging, and methods for sequencing the scan images for maximum accessibil-
ity.
For a complete description of interpreting and enhancing images captured by the MINI Z, refer to
in
Chapter 8, Image Review
.
For a complete description of storing images, refer to
in
Chapter 9, Image
Management
.
This section describes techniques to ensure distortion-free imaging, as well as other steps to prepare for
scanning.
7.1
Avoiding Distortion
While performing a scan, in order to produce the highest quality of image possible, it is important to
keep the beam properly oriented, straight toward the object being scanned, and at a constant distance
from the object. This is illustrated in
Figure 7-1
. Otherwise, if the beam is swung at an angle to the
object, or moved closer or farther away from the object during the scan, or moved with varying speed,
distortion of the image can result.
Do not rotate the scanner relative to the scan path. If scanning a wide object in multiple scans, the indi-
vidual scan paths should be parallel in order to ensure proper interpretation of the orientation in the
images. Think about keeping the bottom of the scanner leading the scanner along the scan path, and
think about keeping the bottom surface of the of the scanner face perpendicular to the scan path all the
way through the scan.
The scanner projects low-power laser beams from the emitter surface of the scanner, toward the object
being scanned. These guide beams can help the user maintain orientation. These also provide a refer-
ence safety indication around the X-ray beam path.
WARNING
Safety precautions and safe operating procedures are described in detail in
Chapter 2,
System Safety
.
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