MR Angiography of Abdominal and Peripheral Arteries
| Autor: | B. Åsberg, L. Ekelund, L. Sjöqvist, K.-Å. Thuomas |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
medicine.medical_specialty
Radiological and Ultrasound Technology business.industry Abdominal aorta Pulsatile flow Hemodynamics General Medicine Blood flow Peripheral medicine.anatomical_structure medicine.artery medicine Abdomen Radiology Nuclear Medicine and imaging Radiology business Mesenteric arteries Peristalsis |
| Zdroj: | Acta Radiologica. 37:3-13 |
| ISSN: | 0284-1851 |
| DOI: | 10.3109/02841859609174351 |
| Popis: | This review article deals with MR angiography (MRA) of abdominal and peripheral arteries. Pulsatile flow, respiratory motion and peristalsis impose difficulties in imaging the vascular structures in the abdomen and the lower extremities. Development of new techniques, such as segmentation of the data acquisition, using specific acquisition windows in relation to a cardiac trigger, magnetization preparation of the tissue and phase-encoding re-ordering or sorting, have reduced the artifacts associated with abdominal and peripheral MRA. Clinical MR investigations of the arteries branching from the abdominal aorta such as the renal and mesenteric arteries and arteries in the lower extremities have revealed that severe stenoses or occlusions can be diagnosed accurately while the grading of less severe stenosis is more difficult.The phase-contrast method has been used to quantify blood flow and study the hemodynamics in abdominal and peripheral vessels. Quantitative flow information can be used to diagnose vasc... |
| Databáze: | OpenAIRE |
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