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: Tuhandes
New Today: 0
New Yesterday: 0
Overall: 1000

People Online:
Members: 0
Visitors: 63
Total: 63
Who Is Where:
 Visitors:
01: Home
02: FAQs
03: External downloads
04: Downloads
05: External downloads
06: Downloads
07: External downloads
08: Downloads
09: Downloads
10: External downloads
11: Downloads
12: External downloads
13: Downloads
14: Downloads
15: Home
16: External downloads
17: Downloads
18: Downloads
19: Home
20: Downloads
21: Downloads
22: Downloads
23: External downloads
24: Downloads
25: Downloads
26: Downloads
27: External downloads
28: Home
29: My Account
30: External downloads
31: External downloads
32: External downloads
33: Downloads
34: Downloads
35: Home
36: Home
37: Downloads
38: Downloads
39: Downloads
40: Downloads
41: Downloads
42: Downloads
43: External downloads
44: Downloads
45: External downloads
46: FAQs
47: External downloads
48: Home
49: Downloads
50: Downloads
51: Downloads
52: External downloads
53: External downloads
54: Downloads
55: Downloads
56: Downloads
57: Downloads
58: Downloads
59: Home
60: Downloads
61: My Account
62: Downloads
63: Home

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 5754

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