Posted by
Zhenyu Shou on
Nov 16, 2006; 1:02pm
URL: http://imagej.273.s1.nabble.com/Filters-Variance-tp3700988p3700993.html
H Nur:
You have to calibrate your film from gray value to CT number/Hausfeld
number/attentuation coefficient. The function is located in
Analyze/Calibrate..You have to scan film (films) with known Hausfeld
number and scan them into ImageJ. And then you read the gray value and
establish the one-on-one relationship between measured gray value and
known Hausfeld values and save it in a global calibration file (or look-up
table). Please check the documentation for that.
----------------------------------------------------------------------
Zhenyu Shou, Ph.D
Radiation Oncology Physicist
RadAmerica, LLC
Franklin Square Radiation Oncology Center
9105 Franklin Square Drive, Suite 100
Baltimore, MD 21237
Phone: 410-682-6800 (office), 408-306-8801 (cell)
Fax: 410-682-2783
Email:
[hidden email]
--------------------------------------------------------------------------
"M. Nur Heriawan" <
[hidden email]>
Sent by: ImageJ Interest Group <
[hidden email]>
11/16/2006 05:17 AM
Please respond to
ImageJ Interest Group <
[hidden email]>
To
[hidden email]
cc
Subject
Analysis of CT image
Dear list,
I am a new user of ImageJ. I would like to use ImageJ
to analyze the sequence of images resulted from X-ray
CT scanner.
My question: Is it possible to draw the profile of CT
value or attenuation coefficient instead of (just)
grayscale value using ImageJ? Are there any plugins
available to address this purpose?
Thank you very much for kind attention.
Best regards,
---------------
M. Nur Heriawan
Lab. of Applied Geosciences & Tech.
Kumamoto Univ., Japan
____________________________________________________________________________________
Sponsored Link
Mortgage rates near 39yr lows.
$420k for $1,399/mo. Calculate new payment!
www.LowerMyBills.com/lre