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Dual-source computed tomography imaging in a patient with atrial fıbrillation and left atrial thrombus
Journal of Cardiovascular Computed Tomography (2007) 1, 170 –171
Images in Cardiovascular CT
Dual-source computed tomography imaging in a patient with atrial fıbrillation and left atrial thrombus Dilek Oncel, MD*, Guray Oncel, MD Sifa Hospital, Fevzipasa Boulevard, No. 172/2, 35240 Izmir, Turkey KEYWORDS: Cardiac imaging; Dual-source CT
A 54-year-old man was admitted to the hospital with the symptoms of palpitation, dyspnea, and chest pain. Electrocardiography showed atrial fibrillation, and dual-source CT coronary angiography imaging was performed (Somatom Definition; Siemens, Germany). The average heart rate was 97 beats/minute (range, 60 –139 beats/minute), and the scanning time was 9 seconds in a single breath-hold. With dual-source CT examination, the left atrial dimensions were measured as 12 ⫻ 11 cm. Almost one third of the huge left atrium was filled with thrombus (Figs. 1 and 2). The mitral valve was calcific and stenotic with a valve area of 1 cm. The ejection fraction of the left ventricle was 35%. In three-dimensional cine images, the apex and anterolateral wall of the left ventricle were hypokinetic. A severe stenosis was detected in the proximal segment of the left anterior descending artery (Fig. 3). The newest dual-source CT offers a temporal resolution of 83 milliseconds independent of the heart rate. Thus, a reconstruction of diagnostic systolic and diastolic images is possible for a wide range of heart rates, even in patients with arrhythmia such as atrial fibrillation, allowing accurate Conflict of interest: The authors report no conflict. * Corresponding author. E-mail address: [email protected] Submitted August 5, 2007. Accepted for publication August 9, 2007.
Figure 1 In the axial source image of the dual-source CT scan, the huge left atrial dilatation and the atrial thrombus can be visualized.
functional evaluation of valves, cardiac chambers and myocardium in addition to the noninvasive coronary artery imaging.
1934-5925/$ -see front matter © 2007 Society of Cardiovascular Computed Tomography. All rights reserved. doi:10.1016/j.jcct.2007.08.009
Oncel and Oncel
Dual-source CT imaging
171
Figure 2 The two-chamber view multiplanar reformation image of the dual-source CT scan shows the huge left atrial dilatation and left atrial thrombus.
Figure 3 The maximum intensity projection image of the dualsource CT angiography shows the high-grade stenosis in the proximal segment of the left anterior descending artery.
Images in Cardiovascular CT
Dual-source computed tomography imaging in a patient with atrial fıbrillation and left atrial thrombus Dilek Oncel, MD*, Guray Oncel, MD Sifa Hospital, Fevzipasa Boulevard, No. 172/2, 35240 Izmir, Turkey KEYWORDS: Cardiac imaging; Dual-source CT
A 54-year-old man was admitted to the hospital with the symptoms of palpitation, dyspnea, and chest pain. Electrocardiography showed atrial fibrillation, and dual-source CT coronary angiography imaging was performed (Somatom Definition; Siemens, Germany). The average heart rate was 97 beats/minute (range, 60 –139 beats/minute), and the scanning time was 9 seconds in a single breath-hold. With dual-source CT examination, the left atrial dimensions were measured as 12 ⫻ 11 cm. Almost one third of the huge left atrium was filled with thrombus (Figs. 1 and 2). The mitral valve was calcific and stenotic with a valve area of 1 cm. The ejection fraction of the left ventricle was 35%. In three-dimensional cine images, the apex and anterolateral wall of the left ventricle were hypokinetic. A severe stenosis was detected in the proximal segment of the left anterior descending artery (Fig. 3). The newest dual-source CT offers a temporal resolution of 83 milliseconds independent of the heart rate. Thus, a reconstruction of diagnostic systolic and diastolic images is possible for a wide range of heart rates, even in patients with arrhythmia such as atrial fibrillation, allowing accurate Conflict of interest: The authors report no conflict. * Corresponding author. E-mail address: [email protected] Submitted August 5, 2007. Accepted for publication August 9, 2007.
Figure 1 In the axial source image of the dual-source CT scan, the huge left atrial dilatation and the atrial thrombus can be visualized.
functional evaluation of valves, cardiac chambers and myocardium in addition to the noninvasive coronary artery imaging.
1934-5925/$ -see front matter © 2007 Society of Cardiovascular Computed Tomography. All rights reserved. doi:10.1016/j.jcct.2007.08.009
Oncel and Oncel
Dual-source CT imaging
171
Figure 2 The two-chamber view multiplanar reformation image of the dual-source CT scan shows the huge left atrial dilatation and left atrial thrombus.
Figure 3 The maximum intensity projection image of the dualsource CT angiography shows the high-grade stenosis in the proximal segment of the left anterior descending artery.