[P19-2] SSFPラジアルスキャンによる先天性心疾患に対する非造影血管撮像の有用性
キーワード：non-contrast-enhanced angiography, radial SSFP, Fontan circulation
Introduction: With the improvement of the performance of the MRI apparatus, it has become possible to perform various non-contrast-enhanced blood vessel imagings. In recent years, it has become possible to perform imaging under free-breathing using radial sampling without ECG gating. This time, we report the usefulness in congenital heart disease by steady state free precession (SSFP) using radial sampling.
Objective and Methods: Siemens MAGNETON Sola 1.5T was introduced to our institute from April 2019, and radial SSFP was imaged for 85 patients, and its usefulness for cardiac morphologic evaluation is verified.
Results: Mean age was 24.7+/-9.6 years. The radial SSFP was possible to especially clearly delineate the venous blood vessels such as the superior vena cava, inferior vena cava and pulmonary veins, which were difficult to delineate using conventional non-contrast imaging. In addition, maximum intensity projection and multi-planar reconstruction, and volume rendering technique were also possible after imaging, and were useful when conducting case studies and patient explanations. Although inter-tissue contrast was high, it was susceptible to flow artifacts due to turbulence such as accelerated blood flow and where multiple blood vessels intersect.
Conclusions: Non-enhanced radial SSFP was able to image blood vessels with mixed arteries and veins, such as Fontan circulation and after Glenn operation in congenital heart disease. However, there are also occasion where it is necessary to rely on contrast imaging for delineating details.
Objective and Methods: Siemens MAGNETON Sola 1.5T was introduced to our institute from April 2019, and radial SSFP was imaged for 85 patients, and its usefulness for cardiac morphologic evaluation is verified.
Results: Mean age was 24.7+/-9.6 years. The radial SSFP was possible to especially clearly delineate the venous blood vessels such as the superior vena cava, inferior vena cava and pulmonary veins, which were difficult to delineate using conventional non-contrast imaging. In addition, maximum intensity projection and multi-planar reconstruction, and volume rendering technique were also possible after imaging, and were useful when conducting case studies and patient explanations. Although inter-tissue contrast was high, it was susceptible to flow artifacts due to turbulence such as accelerated blood flow and where multiple blood vessels intersect.
Conclusions: Non-enhanced radial SSFP was able to image blood vessels with mixed arteries and veins, such as Fontan circulation and after Glenn operation in congenital heart disease. However, there are also occasion where it is necessary to rely on contrast imaging for delineating details.