Peripheral arterial disease CT: Difference between revisions
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== CT Angiography == | == CT Angiography == | ||
*Computed tomographic angiography | *Computed tomographic angiography | ||
**Benefits | **Benefits: | ||
***Useful to asses PAD anatomy and presence of significant stenoses | ***Useful to asses PAD anatomy and presence of significant stenoses | ||
***Useful to select patients who are candidates for endovascular or surgical revascularization | ***Useful to select patients who are candidates for endovascular or surgical revascularization | ||
Line 16: | Line 16: | ||
***Metal clips, stents, and metallic prostheses do not cause significant CTA artifacts | ***Metal clips, stents, and metallic prostheses do not cause significant CTA artifacts | ||
***Scan times are significantly faster than for MRA | ***Scan times are significantly faster than for MRA | ||
**Limitations | **Limitations: | ||
***Single-detector computed tomography lacks accuracy for detection of stenosis | ***Single-detector computed tomography lacks accuracy for detection of stenosis | ||
***Spatial resolution lower than digital subtraction [[angiography]] | ***Spatial resolution lower than digital subtraction [[angiography]] |
Revision as of 15:38, 30 September 2012
Peripheral arterial disease Microchapters |
Differentiating Peripheral arterial disease from other Diseases |
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Diagnosis |
Treatment |
Case Studies |
AHA/ACC Guidelines on Management of Lower Extremity PAD |
Guidelines for Structured Exercise Therapy for Lower Extremity PAD |
Guidelines for Minimizing Tissue Loss in Lower Extremity PAD |
Guidelines for Revascularization of Claudication in Lower Extremity PAD |
Guidelines for Management of Acute Limb Ischemial in Lower Extremity PAD |
Guidelines for Longitudinal Follow-up for Lower Extremity PAD |
Peripheral arterial disease CT On the Web |
American Roentgen Ray Society Images of Peripheral arterial disease CT |
Directions to Hospitals Treating Peripheral arterial disease |
Risk calculators and risk factors for Peripheral arterial disease CT |
Editors-in-Chief: C. Michael Gibson, M.D., Beth Israel Deaconess Medical Center, Boston, MA; Robert G. Schwartz, M.D. [1], Piedmont Physical Medicine and Rehabilitation, P.A.; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
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Overview
CT Angiography
- Computed tomographic angiography
- Benefits:
- Useful to asses PAD anatomy and presence of significant stenoses
- Useful to select patients who are candidates for endovascular or surgical revascularization
- Helpful to provide associated soft tissue diagnostic information that may be associated with PAD presentation
- Metal clips, stents, and metallic prostheses do not cause significant CTA artifacts
- Scan times are significantly faster than for MRA
- Limitations:
- Single-detector computed tomography lacks accuracy for detection of stenosis
- Spatial resolution lower than digital subtraction angiography
- Accuracy and effectiveness not as well determined as MRA
- Asymmetrical opacification in legs may obscure arterial phase in some vessels
- Requires iodinated contrast and ionizing radiation
- Venous opacification can obscure arterial filling
- Benefits: