Abdominal aortic aneurysm CT: Difference between revisions

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{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}


{{CMG}}
==Overview==
Although [[CT]] scanning provides detailed anatomic information and is valuable in planning abdominal aortic aneurysm repair, it is not used as a screening tool because of the potential [[nephrotoxicity]] associated with the dye load, the cost, and the exposure to radiation.


'''Associate Editor-In-Chief:''' {{CZ}}
==Limitations of CT Scanning==
The limitations include:
*Potential [[nephrotoxicity]] associated with the dye load
*Cost
*Exposure to radiation
*Suboptimal visualization of the origins of the aortic branch vessels
*Occasionally, inaccurate localization of the aneurysmal neck<ref name="Ernst-1993">{{Cite journal  | last1 = Ernst | first1 = CB. | title = Abdominal aortic aneurysm. | journal = N Engl J Med | volume = 328 | issue = 16 | pages = 1167-72 | month = Apr | year = 1993 | doi = 10.1056/NEJM199304223281607 | PMID = 8455684 }}</ref>


=== Contrast CT ===
==CT Examples==
[http://www.peir.net Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology]:


* Provides detailed anatomic information and is valuable in planning AAA repair
<div align="left">
* The disadvantages include:
<gallery heights="175" widths="175">
*:* Nephrotoxicity
Image:Abdominal Aortic Aneurysm 0001.jpg|Abdominal Aortic Aneurysm
*:* Cost
Image:Abdominal Aortic Aneurysm 0002.jpg|Abdominal Aortic Aneurysm
*:* Exposure to radiation
</gallery>
*:* Suboptimal visualization of the origins of the aortic branch vessels
</div>
*:* Occasionally, inaccurate localizing of the aneurysmal neck
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal Aortic Aneurysm 0003.jpg|Abdominal Aortic Aneurysm
Image:Abdominal Aortic Aneurysm 0004.jpg|Abdominal Aortic Aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal Aortic Aneurysm 0005.jpg|Abdominal Aortic Aneurysm
Image:Abdominal Aortic Aneurysm 0006.jpg|Abdominal Aortic Aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal Aortic Aneurysm 0007.jpg|Abdominal Aortic Aneurysm
Image:Abdominal Aortic Aneurysm 0008.jpg|Abdominal Aortic Aneurysm
</gallery>
</div>
 
Copyleft image obtained courtesy of Radswiki:
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal aortic aneurysm 001.jpg|CT: a large abdominal aortic aneurysm
Image:Abdominal aortic aneurysm 002.jpg|CT: a large abdominal aortic aneurysm
Image:Abdominal aortic aneurysm 003.jpg|CT: a large abdominal aortic aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal aortic aneurysm 101.jpg|CT: a large abdominal aortic aneurysm
Image:Abdominal aortic aneurysm 102.jpg|CT: a large abdominal aortic aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Abdominal aortic aneurysm 103.jpg|CT: a large abdominal aortic aneurysm
Image:Abdominal aortic aneurysm 104.jpg|CT: a large abdominal aortic aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Ruptured abdominal aortic aneurysm 001.jpg|Ruptured abdominal aortic aneurysm
Image:Ruptured abdominal aortic aneurysm 002.jpg|Ruptured abdominal aortic aneurysm
</gallery>
</div>
 
<div align="left">
<gallery heights="175" widths="175">
Image:Ruptured abdominal aortic aneurysm 003.jpg|Ruptured abdominal aortic aneurysm
Image:Ruptured aaa.jpg|This patient presented with acute abdominal pain and hypotension. His non-contrast CT shows a large AAA and extensive periaortic haematoma. A thick (but subtle) hyperdense crescent is present within the aortic wall posteriorly and laterally which represents acute intramural hematoma, a sign of acute or impending rupture. (Image courtesy of Dr Donna D'Souza)
</gallery>
</div>


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


{{WH}}
{{WH}}
{{WS}}
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[[CME Category::Cardiology]]
[[Category:Disease]]
[[Category:Cardiac surgery]]
[[Category:Surgery]]
[[Category:Cardiology]]
[[Category:Up-To-Date cardiology]]
[[Category:Up-To-Date]]
[[Category:Best pages]]

Latest revision as of 18:23, 14 March 2016

Abdominal Aortic Aneurysm Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Abdominal Aortic Aneurysm from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Study of Choice

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

X-ray

Echocardiography and Ultrasound

CT scan

MRI

Other Imaging Findings

Other Diagnostic Studies

Treatment

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Surgery

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Case #1

Abdominal aortic aneurysm CT On the Web

Most recent articles

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Powerpoint slides

Images

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Abdominal aortic aneurysm CT

CDC on Abdominal aortic aneurysm CT

Abdominal aortic aneurysm CT in the news

Blogs on Abdominal aortic aneurysm CT

Directions to Hospitals Treating Abdominal aortic aneurysm CT

Risk calculators and risk factors for Abdominal aortic aneurysm CT

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Overview

Although CT scanning provides detailed anatomic information and is valuable in planning abdominal aortic aneurysm repair, it is not used as a screening tool because of the potential nephrotoxicity associated with the dye load, the cost, and the exposure to radiation.

Limitations of CT Scanning

The limitations include:

  • Potential nephrotoxicity associated with the dye load
  • Cost
  • Exposure to radiation
  • Suboptimal visualization of the origins of the aortic branch vessels
  • Occasionally, inaccurate localization of the aneurysmal neck[1]

CT Examples

Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology:

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

  • Abdominal Aortic Aneurysm

    Abdominal Aortic Aneurysm

Copyleft image obtained courtesy of Radswiki:

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • CT: a large abdominal aortic aneurysm

    CT: a large abdominal aortic aneurysm

  • Ruptured abdominal aortic aneurysm

    Ruptured abdominal aortic aneurysm

  • Ruptured abdominal aortic aneurysm

    Ruptured abdominal aortic aneurysm

  • Ruptured abdominal aortic aneurysm

    Ruptured abdominal aortic aneurysm

  • This patient presented with acute abdominal pain and hypotension. His non-contrast CT shows a large AAA and extensive periaortic haematoma. A thick (but subtle) hyperdense crescent is present within the aortic wall posteriorly and laterally which represents acute intramural hematoma, a sign of acute or impending rupture. (Image courtesy of Dr Donna D'Souza)

    This patient presented with acute abdominal pain and hypotension. His non-contrast CT shows a large AAA and extensive periaortic haematoma. A thick (but subtle) hyperdense crescent is present within the aortic wall posteriorly and laterally which represents acute intramural hematoma, a sign of acute or impending rupture. (Image courtesy of Dr Donna D'Souza)

References

  1. ↑ Ernst, CB. (1993). "Abdominal aortic aneurysm". N Engl J Med. 328 (16): 1167–72. doi:10.1056/NEJM199304223281607. PMID 8455684. Unknown parameter |month= ignored (help)

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