Help With Image Resolution

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ReginaldTran
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Last seen: 36 weeks 4 days ago
Joined: 09/10/2009

I need to make a 3d model of a baby's hip for subsequent RP, but In the CT scans that I got from the doctors, the coronal and sagital images have extremely bad resolution. The curves look like they are made of big squares (like zooming in in a picture) and I am also missing a lont of detail from the transverse images.
I need to ask the Dr's that I work with for more scans but I need to know what settings must be input to the CT scanner to get images with the quality of those in the tutorial (like the mimi.msc file [CT of a mandible])
I have identified the first problem, and it is that I was given data with 3mm slices. I will ask for 1mm slices for the next set of data, but what else should I ask for?   a higher mAs to decrease the noise?
this is the summary of the project information that I am having trouble with: what could be the cause of my problem?
Slices:
Width:512
Height:512
Pixel size: 0.393mm
Algorithm B60f
Field of View :20.10cm
Slice Increment 3mm
What settings should I ask the physicians to input in order to get high quality data, like the mimi.msc file in the tutorial?
I am new at using mimics for reasearch so any suggestions will be helpful.
Many thanks!
OA

0
Todd.Pietila (not verified)
CT Scan Parameters

Hi ReginaldTran,
The slice distance parameter is your main issue.  This is why you are getting the pixelated or stair-stepped images in your coronal and sagittal views.  Decreasing the slice distance to 1 mm will greatly enhance the detail in those two views.  As for increasing the level of detail in the axial slices, I would suggest using a "Bone" or "High Resolution" reconstruction algorithm.  The scanner technician will probably be able to give you more details and suggestions as to how they can enhance the resolution of the images. 
Todd