OBJECTIVE: To identify and measure the coronary sinus (CS) in patients with and without pulmonary artery hypertension (PAH) using chest computed tomography (CT). METHODS: Using a 4-channel GE LightSpeed CT scanner, nongated axial chest CT images were obtained after intravenous injection of contrast material. Catheterization of the right side of the heart was performed in patients with known or suspected PAH. RESULTS: The CS was identified in all 60 patients (mean +/- SD, 60.5 +/- 17.5 years; 45% men) without PAH (control group) (mean +/- SD, diameter 7.05 +/- 1.90 mm). In 24 patients (9 men; average age +/- SD, 54.1 +/- 14.5 years) with known or suspected PAH (study group), pulmonary artery (PA) pressures were increased; the CS was dilated (mean +/- SD, 9.4 +/- 4. 2 mm); and its size correlated with right atrial pressure (r = 0.358, P = 0.061), mean PA pressure (r = 0.568, P = 0.005), systolic PA pressure (r = 0.375, P = 0.071), and diastolic PA (r = 0.561, P = 0.004). CONCLUSION: The CS is routinely visualized and measurable on chest CT. In patients with PAH, CS dilation is associated with increased PA pressures.
OBJECTIVE: To identify and measure the coronary sinus (CS) in patients with and without pulmonary artery hypertension (PAH) using chest computed tomography (CT). METHODS: Using a 4-channel GE LightSpeed CT scanner, nongated axial chest CT images were obtained after intravenous injection of contrast material. Catheterization of the right side of the heart was performed in patients with known or suspected PAH. RESULTS: The CS was identified in all 60 patients (mean +/- SD, 60.5 +/- 17.5 years; 45% men) without PAH (control group) (mean +/- SD, diameter 7.05 +/- 1.90 mm). In 24 patients (9 men; average age +/- SD, 54.1 +/- 14.5 years) with known or suspected PAH (study group), pulmonary artery (PA) pressures were increased; the CS was dilated (mean +/- SD, 9.4 +/- 4. 2 mm); and its size correlated with right atrial pressure (r = 0.358, P = 0.061), mean PA pressure (r = 0.568, P = 0.005), systolic PA pressure (r = 0.375, P = 0.071), and diastolic PA (r = 0.561, P = 0.004). CONCLUSION: The CS is routinely visualized and measurable on chest CT. In patients with PAH, CS dilation is associated with increased PA pressures.
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