The CT protocols course officially ends on April 23rd. There are only three more requirements left to be fulfilled. They are listed in numeric order below (in bold):
1. There is one more post that has to be added to your web log. This final post should expand several of the issues highlighted in the pdf file that is on your CD--titled "New Techniques in CT Angiography"
Your final post should explain each of the following: (use diagrams, pictures, and/or images to emphasize and illustrate your descriptions.)
A. What is the purpose of bolus tracking in contrast administration, and how does the method work?
B. What is Maximum Intensity Projection? Explain how it works, and provide images as examples of the technique.
C. What is Segmentation? Explain how it works, and provide images as examples of the technique.
The Web log is due on April 23rd. Once it is complete, send me an e-mail with the exact web address in the body of the e-mail. The subject of the e-mail should be "Web Log" (exactly that, and nothing else).
2. The final quiz will be administered on April 23rd and it is based on the two video clips on your CD.
3. A online practice quiz will be available on April 16th. It will be a combination of questions from the pdf file and the two video clips.
My wish is that you have developed an appreciation for the advances in Computed Tomography over the past 35 years–from the first-generation machine of the early days, to the 64 slice Multi-detector CT machines that are in routine use today. The scan parameters and techniques have changed, and so has the terminology of CT scanning. It is essential that you advance with the technology.
Thanks.
Sunday, April 12, 2009
Saturday, April 4, 2009
CT Protocols Practice Quiz
The next in-class quiz will be given on Thursday, April 9, 2009.
The questions will be presented in several formats: short answer, fill in the blanks, identification of anatomy, etc.
This practice quiz is a good indication of what to expect:
1. Regarding upper extremity trauma, in what areas or procedures does CT imaging improve on the capabilities of conventional radiography.
3. What is being demonstrated in the region circled below?
4. The image below was produced by a post-processing technique called ______________ rendering.
5. The image below shows a humeral CT scan of a pediatric patient. The fracture shown is in the region of the ______________ plate.
6. List six indications for CT evaluation of pediatric trauma patients.
7. What is an occult fracture?
8. What is an intra-articular fracture?
9. What result of patient trauma is being demonstrated in the image below?
10. Below, the arrow is pointing to a fracture of the ________________.
11. In musculoskeletal imaging MDCT has proven to be much more reliable at showing fractures than conventional radiography. Is this statement true or false? Give evidence from the presentation to justify your answer.
12. What are the consequences of an undiagnosed fracture?
13. List three reasons for CT examination of the tibial plateau?
14. The avulsion shown in the image below, is in the region of the tibial ______________.
15. What is the name of the major blood vessel shown in the CT angiogram?
16. The image below shows a fracture of the _______________.
17. There are two fractures shown in the image below, what are the specific anatomic regions where these fractures are located?
18. In the case of arterial injuries, what are the findings that are of interest to the radiologist based on CT angiogram studies.
19. Regarding CTA of the extremities, what are some of the pitfalls that may lead to sub-optimal studies?
20. Based on the statement below, what is meant by sensitivity and specificity when used in this context?
The questions will be presented in several formats: short answer, fill in the blanks, identification of anatomy, etc.
This practice quiz is a good indication of what to expect:
1. Regarding upper extremity trauma, in what areas or procedures does CT imaging improve on the capabilities of conventional radiography.
3. What is being demonstrated in the region circled below?
4. The image below was produced by a post-processing technique called ______________ rendering.
5. The image below shows a humeral CT scan of a pediatric patient. The fracture shown is in the region of the ______________ plate.
6. List six indications for CT evaluation of pediatric trauma patients.
7. What is an occult fracture?
8. What is an intra-articular fracture?
9. What result of patient trauma is being demonstrated in the image below?
10. Below, the arrow is pointing to a fracture of the ________________.
11. In musculoskeletal imaging MDCT has proven to be much more reliable at showing fractures than conventional radiography. Is this statement true or false? Give evidence from the presentation to justify your answer.
12. What are the consequences of an undiagnosed fracture?
13. List three reasons for CT examination of the tibial plateau?
14. The avulsion shown in the image below, is in the region of the tibial ______________.
15. What is the name of the major blood vessel shown in the CT angiogram?
16. The image below shows a fracture of the _______________.
17. There are two fractures shown in the image below, what are the specific anatomic regions where these fractures are located?
18. In the case of arterial injuries, what are the findings that are of interest to the radiologist based on CT angiogram studies.
19. Regarding CTA of the extremities, what are some of the pitfalls that may lead to sub-optimal studies?
20. Based on the statement below, what is meant by sensitivity and specificity when used in this context?
Wednesday, March 25, 2009
Wednesday, March 4, 2009
Thursday, February 26, 2009
CT Protocols--Web Log Assignment
The first series of posts to your web log should be made by March 11th.
1. Describe the various branches of the abdominal Aorta. Use labeled diagrams and/or animations along with your narrative.
2. Describe in detail blood circulation in the liver. Use diagrams, pictures and/or animations for emphasis.
3. Post at least 5 labeled cross-sectional CT images of the abdomen. The axial images should start at the level of the diaphragm and end at the level of the iliac crest.
Once you have finished your posts, send me an e-mail with the exact url (web address) for your blog.
1. Describe the various branches of the abdominal Aorta. Use labeled diagrams and/or animations along with your narrative.
2. Describe in detail blood circulation in the liver. Use diagrams, pictures and/or animations for emphasis.
3. Post at least 5 labeled cross-sectional CT images of the abdomen. The axial images should start at the level of the diaphragm and end at the level of the iliac crest.
Once you have finished your posts, send me an e-mail with the exact url (web address) for your blog.
Wednesday, February 25, 2009
Handout on Spiral/Helical CT Available
The handout is now available in pdf format on the google groups message board.
Go to the message board, and look in the FILES section for spiral+CT[1].pdf
Go to the message board, and look in the FILES section for spiral+CT[1].pdf
Wednesday, January 28, 2009
CT of the Head
CT Protocols
View the video clips below for Thursday's (Feb. 5th) class. The first video shows an actual patient being positioned and scanned. Also observe the display of the image in varying contrast levels (windows).
Basics of CT-- (Presenation with Audio)
CT Physics
View the two video clips below for Wednesday's CT Physics class (February 4, 2009). The provide an overview of the evolution of the CT machine since 1972.
Part 1 covers the history of CT, and the different generations of CT machines.
Part 2 covers the 4th and 5th generation CT machines
Tuesday, January 27, 2009
Changes to Class Schedule for CT Physics (Wednseday) and CT Protocols (Thursday)
Due to the weather forecast for Wednseday, January 28th and Thursday, January 29th the following changes have been made to the class schedule:
1. There will be no In-Class Session on Wednseday, January 28th and Thursday, January 29th.
2. In Class sessions will be held Feb 4th and 5th (next week), and February 11th and 12th (the following week)
In CT Physics you are to:
1. Read the sections of Chapter 1 that are outlined in the chapter objectives;
2. Answer the questions in the CT Physics Practice quiz.
The deadline for both assignmnets is Saturday, January 31st.
---------------------------------------------------------
In CT Protocols you are to:
1. Read the handout that was distributed in class.
2. Answer the questions in the CT Protocols Practice quiz.
1. There will be no In-Class Session on Wednseday, January 28th and Thursday, January 29th.
2. In Class sessions will be held Feb 4th and 5th (next week), and February 11th and 12th (the following week)
In CT Physics you are to:
1. Read the sections of Chapter 1 that are outlined in the chapter objectives;
2. Answer the questions in the CT Physics Practice quiz.
The deadline for both assignmnets is Saturday, January 31st.
---------------------------------------------------------
In CT Protocols you are to:
1. Read the handout that was distributed in class.
2. Answer the questions in the CT Protocols Practice quiz.
CT Physics First Assignment
You are responsible for reading portions of Chapter 1 (Computed Tomography)
Chapter 1 Objectives:
When you have read chapter 1, you are expected to be able to accomplish the following tasks: (These are not questions for you to answer)
1. Understand the meaning of the following terms as they relate to CT: (pgs. 2-3)
a. tomography
b. transverse axial tomography
c. image reconstruction from projections
d. emission CT
e. transmission CT
2. List three steps that constitute the CT process and briefly describe each step.
(pages 3-6; PROCESS)
3. Identify the major components of a CT scanner. (page 6, fig. 1-6)
4. Describe briefly how a CT scanner works. (page 6--HOW CT SCANNERS WORK)
5. Describe the early CT experiments performed by G.N. Hounsfield. (pages 7-8)
6. State the contribution of A.M. Cormack to the development of CT (page 8)
7. Identify developments in CT from the period 1973 to 1983 (pages 8-9).
8. State other uses of CT apart from those in clinical medicine. (pages 13-14).
9. Define Digital Image Processing. (pages 14-15).
10. Identify the essential components of a digital imaging system.
(pages 14-15; fig. 1-22 pg--16).
11. Describe various applications of volume scanning (pages 15-18)
Chapter 1 Objectives:
When you have read chapter 1, you are expected to be able to accomplish the following tasks: (These are not questions for you to answer)
1. Understand the meaning of the following terms as they relate to CT: (pgs. 2-3)
a. tomography
b. transverse axial tomography
c. image reconstruction from projections
d. emission CT
e. transmission CT
2. List three steps that constitute the CT process and briefly describe each step.
(pages 3-6; PROCESS)
3. Identify the major components of a CT scanner. (page 6, fig. 1-6)
4. Describe briefly how a CT scanner works. (page 6--HOW CT SCANNERS WORK)
5. Describe the early CT experiments performed by G.N. Hounsfield. (pages 7-8)
6. State the contribution of A.M. Cormack to the development of CT (page 8)
7. Identify developments in CT from the period 1973 to 1983 (pages 8-9).
8. State other uses of CT apart from those in clinical medicine. (pages 13-14).
9. Define Digital Image Processing. (pages 14-15).
10. Identify the essential components of a digital imaging system.
(pages 14-15; fig. 1-22 pg--16).
11. Describe various applications of volume scanning (pages 15-18)
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