Variation of the size of pulmonary venous ostia during the cardiac cycle: optimal reconstruction window at ECG-gated multi-detector row CT

Choi, Seo-Young; Seo, Joon Beom; Choi, Seong Hoon; Lee, Soo Hyun; Hyun, Kyung; Ko, Sung Min; Lee, Jin Seong; Song, Jae Woo; Song, Kyoung Seob; Choi, Kee Joon; Kim, You Ho; Lim, Tae Hwan

doi:10.1007/s00330-005-2694-0

Cited by 30 publications

(23 citation statements)

References 20 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Virtual endoscopy [16] was not evaluated. MRA was oriented based on bright blood CINE imaging (True-FISP), which could potentially be used to analyze the systolo-diastolic motion of the PVs ostiae [17]. For MRA acquisition, a balance had to be found between the necessity to assess the inferior veins (backward projection) and a reasonable time of apnea.…”

Section: Discussionmentioning

confidence: 99%

MR evaluation of pulmonary vein diameter reduction after radiofrequency catheter ablation of atrial fibrillation

et al. 2006

View full text Add to dashboard Cite

Fifty consecutive patients aged 52+/-12 years suffering from drug refractory atrial fibrillation (AF) underwent baseline and post-ablation MR angiography (MRA) at a mean follow-up of 4+/-3.5 months. Pulmonary vein (PV) disconnection was performed with a maximum energy delivery of 30 W. MRA allowed a two-plane measurement of each PV ostium. After ablation, no significant stenosis was observed, and only 1/194 (0.5%) and 3/194 (2%) PVs had a diameter reduction of 31-40% in the coronal and axial planes, respectively. There was a significant overall post-procedural PV narrowing of 4.9% in the coronal plane and 6.5% in the axial plane (P=ns between both planes). MRA is an efficient technique that can be used in pre- and postoperative evaluation of AF patients. Using a maximal power delivery limited to 30 W, no significant PV stenosis was observed at mid-term follow-up. Late PV anatomical assessment is needed to confirm these results on long-term follow-up.

show abstract

Section: Discussionmentioning

confidence: 99%

MR evaluation of pulmonary vein diameter reduction after radiofrequency catheter ablation of atrial fibrillation

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Also, venography overestimates and transoesophageal echocardiography underestimates ostial diameter compared with CT and intracardiac echocardiography while MDCT and intracardiac echocardiography provide comparable measurements of PV ostia [36,52]. Furthermore, in atrial systole, PV ostial size decreases by 32.5%, indicating the need for PV measurements in the same phase of the cardiac cycle [57].…”

Section: Anatomy Of Pulmonary Veinsmentioning

confidence: 96%

Imaging in percutaneous ablation for atrial fibrillation

et al. 2006

View full text Add to dashboard Cite

Percutaneous ablation for electrical disconnection of the arrhythmogenic foci using various forms of energy has become a well-established technique for treating atrial fibrillation (AF). Success rate in preventing recurrence of AF episodes is high although associated with a significant incidence of pulmonary vein (PV) stenosis and other rare complications. Clinical workup of AF patients includes imaging before and after ablative treatment using different noninvasive and invasive techniques such as conventional angiography, transoesophageal and intracardiac echocardiography, computed tomography (CT) and magnetic resonance imaging (MRI), which offer different information with variable diagnostic accuracy. Evaluation before percutaneous ablation involves assessment of PVs (PV pattern, branching pattern, orientation and ostial size) to facilitate position and size of catheters and reduce procedure time as well as examining the left atrium (presence of thrombi, dimensions and volumes). Imaging after the percutaneous ablation is important for assessment of overall success of the procedure and revealing potential complications. Therefore, imaging methods enable depiction of PVs and the anatomy of surrounding structures essential for preprocedural management and early detection of PV stenosis and other ablation-related procedures, as well as long-term follow-up of these patients.

show abstract

“…The PV ostia are usually oval with a longer superior-inferior dimension. The size of the PV ostia is variable during the cardiac cycle, with the ostia enlarged at the end of ventricular systole compared with those at the end of ventricular diastole, by factors of 1.25 to 1.44 [23].…”

Section: Pv Anatomymentioning

confidence: 99%