Abdominal aortic aneurysm MRI: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Template:Abdominal aortic aneurysm}} | {{Template:Abdominal aortic aneurysm}} | ||
{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; {{HP}} | {{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; {{HP}} {{RG}} | ||
==Overview== | ==Overview== | ||
[[MRI]] | [[MRI]] might be a better soft tissue visualizer than [[ultrasonography]] and [[CT]], but its limitations limit its usage as a screening tool and as a diagnostic tool during emergencies like ruptured AAA. However its advantages makes it a good alternative in AAA patients with poor renal function and in elective preoperative evaluation of unruptured AAA<ref name="Thurnher-1997">{{Cite journal | last1 = Thurnher | first1 = SA. | last2 = Dorffner | first2 = R. | last3 = Thurnher | first3 = MM. | last4 = Winkelbauer | first4 = FW. | last5 = Kretschmer | first5 = G. | last6 = Polterauer | first6 = P. | last7 = Lammer | first7 = J. | title = Evaluation of abdominal aortic aneurysm for stent-graft placement: comparison of gadolinium-enhanced MR angiography versus helical CT angiography and digital subtraction angiography. | journal = Radiology | volume = 205 | issue = 2 | pages = 341-52 | month = Nov | year = 1997 | doi = | PMID = 9356613 }}</ref>. | ||
==MRI== | ==MRI== | ||
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*[[MRI]] may be helpful in stable patients with a severe dye allergy, where [[CT]] scanning is contraindicated. | *[[MRI]] may be helpful in stable patients with a severe dye allergy, where [[CT]] scanning is contraindicated. | ||
*[[MRI]] provides imaging of the [[aorta]] comparable to that with [[CT]] scanning and [[ultrasonogram]] without subjecting the patient to dye load or ionizing radiation. | *[[MRI]] provides imaging of the [[aorta]] comparable to that with [[CT]] scanning and [[ultrasonogram]] without subjecting the patient to dye load or ionizing radiation. | ||
*[[MRI]] also provides superior imaging of branch vessels compared with [[CT]] scan or [[ultrasonogram]]. | *[[MRI]] also provides superior imaging of branch vessels compared with [[CT]] scan or [[ultrasonogram]]<ref name="Litmanovich-2009">{{Cite journal | last1 = Litmanovich | first1 = D. | last2 = Bankier | first2 = AA. | last3 = Cantin | first3 = L. | last4 = Raptopoulos | first4 = V. | last5 = Boiselle | first5 = PM. | title = CT and MRI in diseases of the aorta. | journal = AJR Am J Roentgenol | volume = 193 | issue = 4 | pages = 928-40 | month = Oct | year = 2009 | doi = 10.2214/AJR.08.2166 | PMID = 19770313 }}</ref>. | ||
*[[MRI]] is a more precise preoperative evaluator and affords immediate post operative evaluation of surgical repair of AAA<ref name="Cejna-2002">{{Cite journal | last1 = Cejna | first1 = M. | last2 = Loewe | first2 = C. | last3 = Schoder | first3 = M. | last4 = Dirisamer | first4 = A. | last5 = Hölzenbein | first5 = T. | last6 = Kretschmer | first6 = G. | last7 = Lammer | first7 = J. | last8 = Thurnher | first8 = S. | title = MR angiography vs CT angiography in the follow-up of nitinol stent grafts in endoluminally treated aortic aneurysms. | journal = Eur Radiol | volume = 12 | issue = 10 | pages = 2443-50 | month = Oct | year = 2002 | doi = 10.1007/s00330-002-1429-8 | PMID = 12271383 }}</ref>. | |||
===Limitations=== | ===Limitations=== | ||
*Lack of widespread availability | *Lack of widespread availability | ||
*Need for a stable patient | *Need for a stable patient | ||
*More sensitive to motion than CT, thus requiring the patient to remain motionless for a longer period of time | |||
*Incompatible with monitoring equipment | *Incompatible with monitoring equipment | ||
*High cost | *High cost | ||
*Less valuable in assessing suprarenal extension of aneurysm | *Less valuable in assessing suprarenal extension of aneurysm | ||
*Less accurate than thin-slice [[CT]] | *Less accurate than thin-slice [[CT]]<ref name="Litmanovich-2009">{{Cite journal | last1 = Litmanovich | first1 = D. | last2 = Bankier | first2 = AA. | last3 = Cantin | first3 = L. | last4 = Raptopoulos | first4 = V. | last5 = Boiselle | first5 = PM. | title = CT and MRI in diseases of the aorta. | journal = AJR Am J Roentgenol | volume = 193 | issue = 4 | pages = 928-40 | month = Oct | year = 2009 | doi = 10.2214/AJR.08.2166 | PMID = 19770313 }}</ref> | ||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
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[[CME Category::Cardiology]] | |||
[[Category:Disease]] | [[Category:Disease]] | ||
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[[Category:Up-To-Date cardiology]] | [[Category:Up-To-Date cardiology]] | ||
[[Category:Up-To-Date]] | [[Category:Up-To-Date]] | ||
Latest revision as of 15:04, 7 January 2020
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Abdominal Aortic Aneurysm Microchapters |
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Differentiating Abdominal Aortic Aneurysm from other Diseases |
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Abdominal aortic aneurysm MRI On the Web |
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Directions to Hospitals Treating Abdominal aortic aneurysm MRI |
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Risk calculators and risk factors for Abdominal aortic aneurysm MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Hardik Patel, M.D. Ramyar Ghandriz MD[3]
Overview
MRI might be a better soft tissue visualizer than ultrasonography and CT, but its limitations limit its usage as a screening tool and as a diagnostic tool during emergencies like ruptured AAA. However its advantages makes it a good alternative in AAA patients with poor renal function and in elective preoperative evaluation of unruptured AAA[1].
MRI
Advantages
- MRI may be helpful in stable patients with a severe dye allergy, where CT scanning is contraindicated.
- MRI provides imaging of the aorta comparable to that with CT scanning and ultrasonogram without subjecting the patient to dye load or ionizing radiation.
- MRI also provides superior imaging of branch vessels compared with CT scan or ultrasonogram[2].
- MRI is a more precise preoperative evaluator and affords immediate post operative evaluation of surgical repair of AAA[3].
Limitations
- Lack of widespread availability
- Need for a stable patient
- More sensitive to motion than CT, thus requiring the patient to remain motionless for a longer period of time
- Incompatible with monitoring equipment
- High cost
- Less valuable in assessing suprarenal extension of aneurysm
- Less accurate than thin-slice CT[2]
References
- ↑ Thurnher, SA.; Dorffner, R.; Thurnher, MM.; Winkelbauer, FW.; Kretschmer, G.; Polterauer, P.; Lammer, J. (1997). "Evaluation of abdominal aortic aneurysm for stent-graft placement: comparison of gadolinium-enhanced MR angiography versus helical CT angiography and digital subtraction angiography". Radiology. 205 (2): 341–52. PMID 9356613. Unknown parameter
|month=ignored (help) - ↑ 2.0 2.1 Litmanovich, D.; Bankier, AA.; Cantin, L.; Raptopoulos, V.; Boiselle, PM. (2009). "CT and MRI in diseases of the aorta". AJR Am J Roentgenol. 193 (4): 928–40. doi:10.2214/AJR.08.2166. PMID 19770313. Unknown parameter
|month=ignored (help) - ↑ Cejna, M.; Loewe, C.; Schoder, M.; Dirisamer, A.; Hölzenbein, T.; Kretschmer, G.; Lammer, J.; Thurnher, S. (2002). "MR angiography vs CT angiography in the follow-up of nitinol stent grafts in endoluminally treated aortic aneurysms". Eur Radiol. 12 (10): 2443–50. doi:10.1007/s00330-002-1429-8. PMID 12271383. Unknown parameter
|month=ignored (help)