Gadolinium-enhanced magnitude contrast MR angiography of popliteal and tibial arteries
| Autor: | Mario N. Gomes, Steven V. Lossef, Klemens H. Barth, Mark J. Carvlin, Richard H. Patt, Sunder S. Rajan, David Calcagno |
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| Rok vydání: | 1992 |
| Předmět: |
Gadolinium DTPA
medicine.medical_specialty Gadolinium Contrast Media chemistry.chemical_element Arterial Occlusive Diseases Imaging phantom Meglumine Reference Values medicine.artery Organometallic Compounds medicine Humans Popliteal Artery Radiology Nuclear Medicine and imaging medicine.diagnostic_test Vascular disease business.industry Subtraction Pentetic Acid medicine.disease Magnetic Resonance Imaging Popliteal artery Peripheral Models Structural Tibial Arteries Drug Combinations chemistry Angiography Radiology Bolus (digestion) business |
| Zdroj: | Radiology. 184:349-355 |
| ISSN: | 1527-1315 0033-8419 |
| Popis: | To evaluate the efficacy of gadopentetate dimeglumine in MR angiography of the lower extremities, a flow phantom, seven healthy volunteers, and seven patients with peripheral vascular disease were studied with a magnitude contrast (MC) technique. The combination of an MC rephase-dephase gradient-refocused-echo pulse sequence, a 40-cm-long transmit-receive coil, and intravenous administration of a bolus of gadopentetate dimeglumine improved MR angiographic quality in the phantom, volunteers, and patients. Gadolinium enhancement decreased deleterious saturation effects and improved images of the popliteal and tibioperoneal arteries in the volunteers and patients. However, in some cases, venous overlap, imaging artifacts, and suboptimal visualization of subtle lesions limited interpretation. The authors conclude that gadolinium enhancement combined with an MC subtraction pulse sequence appreciably improves MR angiography of lower extremity arteries. |
| Databáze: | OpenAIRE |
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