PMC7277057_01
The balloon of the wedge catheter appears as a black circle in the white blood pool in the right-sided atrium. The hepatic veins appear to drain directly to the atrium.
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fig1
The patient's hepatic veins drained directly to the right-sided atrium (Figure 1) whilst the liver extended from right to left throughout the upper abdomen. Under magnetic resonance guidance, a CO2-filled balloon wedge catheter was inserted through the internal jugular vein without a guidewire, and the positioning of the balloon was confirmed on MRI as a black spot in the white blood pool (Figures 1 and 2).
The CO2-filled balloon appears black in the SSFP images. The image shows the CO2-filled balloon of the wedge catheter in the left pulmonary artery.
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fig2
Under magnetic resonance guidance, a CO2-filled balloon wedge catheter was inserted through the internal jugular vein without a guidewire, and the positioning of the balloon was confirmed on MRI as a black spot in the white blood pool (Figures 1 and 2).
The balloon of the wedge catheter appears in the wedge position of the right pulmonary artery.
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fig3
MPA, the branches, and the wedge position (Figure 3), the wedge catheter was left in the MPA (Figure 4) and the pulmonary flow (Qp) was estimated using the phase contrast flow sequence. MPA pressure measured 93/29/52 mmHg against systemic pressure of 96/65 mmHg, whilst wedge pressure measured 20 mmHg.
At the end of the right heart catheterization, the CO2-filled balloon was left inflated and the wedge catheter was left in the main pulmonary artery for simultaneous pressure measurement whilst the pulmonary flow was obtained with the phase contrast flow sequence.
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fig4
MPA, the branches, and the wedge position (Figure 3), the wedge catheter was left in the MPA (Figure 4) and the pulmonary flow (Qp) was estimated using the phase contrast flow sequence. MPA pressure measured 93/29/52 mmHg against systemic pressure of 96/65 mmHg, whilst wedge pressure measured 20 mmHg.