Efficacy of multidetector computed tomography for diagnosis of unroofed coronary sinus.The patient was a 62-year-old woman with a chest X-ray abnormality.  Using contrast-enhanced 64-slice multidetector computed tomography (MDCT), curved planar reconstruction along the CS showed a direct connection of the left atrium and CS, in addition to the CS to right atrium connection.  In our case, images from 64-slice multidetector computed tomography provided clear visualization of the morphology of the CS and permitted a definite diagnosis of unroofed CS.
multidetector computed tomography
Transthoracic echocardiography (TTE) showed a dilated right ventricle and right atrium and an enlarged coronary sinus (CS), but definite diagnosis was not possible.  <Learning objective: The diagnosis of unroofed coronary sinus (CS) is often difficult because the ability of transthoracic echocardiography to visualize the posterior cardiac structure is limited. 
transthoracic echocardiography
Using contrast-enhanced 64-slice multidetector computed tomography (MDCT), curved planar reconstruction along the CS showed a direct connection of the left atrium and CS, in addition to the CS to right atrium connection.  In our case, images from 64-slice multidetector computed tomography provided clear visualization of the morphology of the CS and permitted a definite diagnosis of unroofed CS.
64-slice multidetector computed tomography