Perioperative monitoring of flow and patency in native and grafted internal mammary arteries using a combined MR protocol
| Autor: | A M Scheule, Michael Fenchel, Claus D. Claussen, Ulrich Kramer, Stephan Miller, Norbert I. Stauder, U Hahn, F. S. Eckstein |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Male
Graft flow medicine.medical_specialty Contrast Media Coronary Disease Humans Medicine Radiology Nuclear Medicine and imaging In patient Coronary Artery Bypass Mammary Arteries Internal Mammary-Coronary Artery Anastomosis Vascular Patency Aged Intraoperative Care Left internal mammary artery business.industry Mr angiography General Medicine Perioperative Middle Aged Surgery medicine.anatomical_structure Mammary artery Female business Nuclear medicine Blood Flow Velocity Magnetic Resonance Angiography Artery |
| Zdroj: | The British Journal of Radiology. 78:292-298 |
| ISSN: | 1748-880X 0007-1285 |
| DOI: | 10.1259/bjr/16043862 |
| Popis: | The objective of this study was to evaluate graft flow (f) and patency (p) in patients with internal mammary artery (f,p) and venous (p only) grafts using a combined MR protocol with phase-contrast technique and MR angiography. 42 patients with 42 left internal mammary artery (LIMA) and 63 venous grafts were examined pre and 6 months post coronary artery bypass graft (CABG) surgery. Phase-contrast flow measurements were applied to the IMA. Post-operatively, a contrast enhanced MR angiogram was performed to assess bypass patency. LIMA/venous grafts were occluded in 3/42 and 13/63, respectively. Flow in LIMA decreased from 19.4+/-10.4 ml min(-1) m(-2) pre-operatively to 13.4+/-9.7 ml min(-1) m(-2) post-operatively (p0.002). In contrast, flow in the native right IMA increased from 17.6+/-8.7 ml min(-1) m(-2) pre-operatively to 24.8+/-9.0 ml min(-1) m(-2) post-operatively (p0.001). MRI allows a combined assessment of bypass patency and flow. This study protocol may be applicable to perioperative follow-up studies in patients after CABG surgery. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|