MRT-Diagnostik kardialer Myxome: Sequenzevaluierung und Differentialdiagnose
| Autor: | U. Hofer, J. Textor, Torsten Sommer, Christian Vahlhaus, D. Pauleit, E. Bierhoff, Kai Wilhelm, H. H. Schild, A. v Smekal, Eva Wardelmann |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
medicine.diagnostic_test
Heart disease business.industry animal diseases Myxoma Magnetic resonance imaging medicine.disease Lesion medicine.anatomical_structure cardiovascular system medicine Radiology Nuclear Medicine and imaging cardiovascular diseases Differential diagnosis medicine.symptom Nuclear medicine business Cardiac myxomas Gradient echo Interatrial septum |
| Zdroj: | RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 170:156-162 |
| ISSN: | 1438-9010 1438-9029 |
| DOI: | 10.1055/s-2007-1011028 |
| Popis: | Purpose To evaluate native and contrast enhanced T1-weighted spin (T1-SE), cine gradient echo (Cine-GE), and T2-weighted turbo spin (T2-TSE) sequences in the diagnosis and differential diagnosis of cardiac myxomas. Methods 15 patients with echocardiographically suspected cardiac atrial myxomas underwent 0.5 T-MR imaging of the heart with native T1-SE, contrast-enhanced T1-SE, Cine-GE, and T2-TSE sequences. MR images were evaluated for signal intensity (SI) and lesion's conspicuity. Results were confirmed histologically (14 x) or by follow-up (1 x). Results MRI revealed myxomas in 9 patients, sarcomas in three patients, and thrombi in three patients. Lesion conspicuity was better in Cine-GE and T2-TSE compared with native and contrast-enhanced T1-SE sequences. Myxomas were characterized by an intermediate SI similar to myocardium in T1-SE, high SI similar to water in T2-TSE, and low to moderately high enhancement (range 19-75%, mean 48%). Conclusion Distinct SI characteristics together with anatomical-topographical features (attachment to the interatrial septum, no infiltration of myocardium and vessels) are diagnostic for cardiac myxomas. Cine-GE and T2-TSE sequences are the sequences of choice for detection of myxomas and other atrial masses. T2-TSE and contrast-enhanced T1-weighted sequences are most useful for mass characterisation and differentiation between myxomas, malignant tumors, and thrombi. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|