Mobius3D MobiusFX DoseLab TG-142 / DoseLab Pro MedPhys Files
MedPhys Files
   Login or Register
HomeDownloadsRegister
Toggle Content Main Menu
 Home Members options Search
Toggle Content User Info

Welcome Anonymous

Nickname
Password

Membership:
Latest: Aswathiraj
New Today: 0
New Yesterday: 0
Overall: 996

People Online:
Members: 0
Visitors: 52
Total: 52
Who Is Where:
 Visitors:
01: Downloads
02: Downloads
03: Downloads
04: Home
05: Downloads
06: Downloads
07: External downloads
08: Downloads
09: External downloads
10: External downloads
11: Downloads
12: Downloads
13: External downloads
14: External downloads
15: Home
16: External downloads
17: Downloads
18: Home
19: Downloads
20: Downloads
21: External downloads
22: Downloads
23: Downloads
24: Downloads
25: Downloads
26: Downloads
27: External downloads
28: External downloads
29: External downloads
30: Downloads
31: Home
32: Downloads
33: Downloads
34: Downloads
35: External downloads
36: Downloads
37: Downloads
38: Home
39: Downloads
40: Downloads
41: Downloads
42: Downloads
43: Downloads
44: Downloads
45: Home
46: Downloads
47: External downloads
48: Home
49: External downloads
50: Downloads
51: Downloads
52: Downloads

Staff Online:

No staff members are online!
Welcome to MedPhys Files!

Feel free to browse through and download files submitted by other physicists, as well as submit your own files using the "Add download" link. Unless otherwise specified, all files are distributed under the MIT open source license for research and educational use only with no fitness guarantee.

This website is intended to supplement existing medical physics resources. It is an easy and informal way to share your work with others. Please contact Nathan Childress by using the "Contact Us" link with any questions.


Posted on Tuesday, June 13
ImageJ macro to determine the helical slice thickness of a CT scan
Main | Details | Download Now | History | Statistics

Add your mirror to this download

Category Diagnostic Imaging
Submitted by dplatten
Author's Name
David Platten
Distributed with custom license file? No
Published
Fri Oct 08, 2010 10:12 am

An ImageJ macro that determines the slice thickness of a helical CT scan by analysing a directory of DICOM images from a helical scan through a thin gold disc phantom or very small metal bead.

The macro expects a directory of DICOM images from a helical scan run through a thin metal disc or a very small metal bead. The reconstruction interval should be around 1/10 of the slice thickness. For example, if the reconstructed slice thickness is 3 mm then you need to set the reconstruction interval to 0.3 mm.

The phantom can be a thin gold disc embedded in a Perspex rod, similar to the one that ImPACT uses. Alternatively the method may work by scanning through a small metal bead, provided that the bead is much smaller than the reconstructed slice thickness.

Calculates the FWHM by finding the bead or disc position then measuring the CT# of it. The FWHM is taken as the difference between min and max CT# values. Note - this may not be a correct assumption for your scan! Note - this will only work well if the contrast between the bead or disc CT # and background is high - use a very small bead / disc roi to help with this.
Rating Not rated
Popularity 1/5: Not popular
Downloads 208
Page views 5469

Download Now
Unless otherwise specified, all files are distributed under the MIT open source license for research and educational use only with no fitness guarantee.
Interactive software released under GNU GPL, Code Credits, Privacy Policy