Click here for quiz, and once you are done, please check back on this site for the course evaluation.
Click here for the course evaluation. Do not put your name in the name box, put Computerized Imaging.
Thursday, December 9, 2010
Thursday, November 18, 2010
Friday, November 12, 2010
Thursday, November 4, 2010
Data Acquisition in CT
The topic covered in class on November 4th, 2010 was Data Acquisition in CT
There is a link to the handout on the upper right of this blog.
There will be no in-class sessions until December 2nd (the date of the class presentations).
All course material will be provided on this web-blog or via e-mail.
The quiz scheduled for November 18th will be on the Internet at 6:00-7:00 pm. More information will follow.
There is a link to the handout on the upper right of this blog.
There will be no in-class sessions until December 2nd (the date of the class presentations).
All course material will be provided on this web-blog or via e-mail.
The quiz scheduled for November 18th will be on the Internet at 6:00-7:00 pm. More information will follow.
Thursday, October 21, 2010
Wednesday, October 20, 2010
Content Specifications for October 21st Quiz
The quiz will be held in the computer laboratory on the third floor of the SB building.
There are 30 multiple choice questions.
Topics that will be covered include:
CT numbers (how does a higher energy beam affect the CT number)
Linear attenuation coefficient
The Hounsfield scale (relative positions of different tissues on the scale, range of CT numbers, etc.)
Windowing
There are 30 multiple choice questions.
Topics that will be covered include:
CT numbers (how does a higher energy beam affect the CT number)
Linear attenuation coefficient
The Hounsfield scale (relative positions of different tissues on the scale, range of CT numbers, etc.)
Windowing
- window level (WL)
- window width (WW)
- appearance of tissues when WL and/or WW is adjusted
- effect of WL and WW on tissue density and contrast
- Sine wave
- wavelength
- frequency
- period
- amplitude
- phase
- units of measurement (hertz kilohertz, etc.)
- sampling rate/frequency
- sampling precision
- quantization
- purpose of a Fourier transform
- time domain
- frequency domain
- What is the Nyquist sampling rate and what does it indicate?
PowerPoint Presentation for October 13th Class
The presentation below introduces two very important concepts in digital imae processing:
1. The Fourier Transform
2. The Nyquist Theorem
Click here for full page presentation
1. The Fourier Transform
2. The Nyquist Theorem
Click here for full page presentation
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