Quiescent-Interval Slice Selective Magnetic Resonance Angiography for Abdominal Aortic Aneurysm Treatment Planning
| Autor: | Wojciech Derwich, Michael Keese, Marc Harth, Axel Thalhammer, Thomas Schmitz-Rixen, Majid Kazemtash |
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| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
medicine.diagnostic_test business.industry Contrast Media Reproducibility of Results medicine.disease Magnetic resonance angiography Abdominal aortic aneurysm Contrast medium Treatment Outcome Angiography cardiovascular system Humans Medicine Radiology Nuclear Medicine and imaging Surgery cardiovascular diseases Radiology Cardiology and Cardiovascular Medicine business Radiation treatment planning Magnetic Resonance Angiography Aortic Aneurysm Abdominal Retrospective Studies |
| Zdroj: | Journal of Endovascular Therapy. 28:393-398 |
| ISSN: | 1545-1550 1526-6028 |
| DOI: | 10.1177/1526602821989341 |
| Popis: | Purpose Diagnostic imaging of Abdominal aortic aneurysm (AAA) almost exclusively employs CT angiography (CTA) involving X-ray exposure and contrast medium that may harm some patients. Quiescent-Interval Slice Selective MR (QISS-MR) depicts vascular anatomy without radiation or contrast medium. The diagnostic quality of QISS-MRA and CTA were compared in regard to length and diameter measurements in AAA patients. Suitability of QISS-MRA for AAA treatment planning was evaluated. Materials and Methods The details of 30 patients with AAA who received both a QISS-MR and CTA for a known infrarenal AAA were obtained retrospectively that was approved by the local research ethics board. Two observers analyzed each dataset in terms of image quality and determined lumen diameter and length of 15 vessel segments. Results Highly accurate agreement between the diagnostic scores from the two observers was achieved. There was no significant difference between CTA and QISS-MRA for all 15 measured vessels. Although information on calcification was lacking and intraluminal thrombus was visualized in only 25 patients out of 30 patients, a founded decision to carry out OR or EVAR was possible with both imaging modalities. Conclusion QISS-MRA presents a radiation and contrast free method for preoperative diagnostic AAA imaging. While QISS-MRA does not deliver exact information regarding calcification and thrombus formation, it does accurately allow measurement of vessel diameter and length. Therefore, it is potentially useful for EVAR planning in selected patients with impaired renal function. |
| Databáze: | OpenAIRE |
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