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
Tuesday, October 12, 2010
Thursday, September 30, 2010
Quiz 1 Part 2
When the quiz opens in your browser window, enter your name and e-mail address in the labeled boxes at the top of the quiz page. You are allowed only one attempt, so read carefully and make sure your preferred answer is selected for each question (be careful when you scroll up or down that the answer you select doesn't change).
Click on the "grade and submit" button at the bottom of the quiz page when you have checked all your answers and are satisfied that you have answered all 25 questions. You have 1 hour (6pm to 7pm). If I receive your score later than 7pm it will not count.
Click here for the multiple choice portion of the quiz.
Click on the "grade and submit" button at the bottom of the quiz page when you have checked all your answers and are satisfied that you have answered all 25 questions. You have 1 hour (6pm to 7pm). If I receive your score later than 7pm it will not count.
Click here for the multiple choice portion of the quiz.
Monday, September 27, 2010
Computerized Imaging Quiz and Assignments for Sept 30th and October 7th
The Computerized Imaging Quiz is comprised of two parts.
One part is multiple choice, and will be administered via this web-site on September 30th between 6:00 to 7:00 pm (A link for the quiz will be provided at the specified time on this page).
The second part of the quiz is due on October 7th (bring answers to class)
Perform the relevant calculations as outlined below, showing each step in your calculation.
One part is multiple choice, and will be administered via this web-site on September 30th between 6:00 to 7:00 pm (A link for the quiz will be provided at the specified time on this page).
The second part of the quiz is due on October 7th (bring answers to class)
Perform the relevant calculations as outlined below, showing each step in your calculation.
1. How much memory is required to store an image that has a bit depth of 8 and a matrix of 1024 x 1024? (provide the answer for each of the units of measurement listed)
_________________________bits
_________________________bytes
_________________________kilobytes
_________________________Megabytes
2. Convert the following binary number to decimal: 1110 1111
3. Convert the following binary number to hexadecimal: 10 1011 1101 1111
Thursday, September 23, 2010
VRT, MIP, & MPR
The five video clips below (Video clips 1-5) provide information about image post-processing techniques utilized in Computed Tomography.
Post processing is really computer manipulation of image data. The image information (data) is collected while the patient is being scannned (This is called the data acquisition phase) .
We are familiar with the two dimensional (2-D) images of the heart shown below in axial, saggital, and coronal planes.
The technology is now in place for image display in three dimensions (3-D)
and 4-D displays(Three dimensional images in real time...3d+t).
Video clip 1
Video clip 2
Video clip 3
Video clip 4
Video clip 5
After watching the video clips 1-5 type at least 3 paragraphs describing what is VRT, MIP, & MPR. Give some examples of how they are applied in Computed Tomography to aid diagnosis.
(Send the typed document to my e-mail address by Thursday, October 7th at 5pm)
Post processing is really computer manipulation of image data. The image information (data) is collected while the patient is being scannned (This is called the data acquisition phase) .
We are familiar with the two dimensional (2-D) images of the heart shown below in axial, saggital, and coronal planes.
The technology is now in place for image display in three dimensions (3-D)
and 4-D displays(Three dimensional images in real time...3d+t).
Video clip 1
Video clip 2
Video clip 3
Video clip 4
Video clip 5
After watching the video clips 1-5 type at least 3 paragraphs describing what is VRT, MIP, & MPR. Give some examples of how they are applied in Computed Tomography to aid diagnosis.
(Send the typed document to my e-mail address by Thursday, October 7th at 5pm)
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