Assessment of the structural remodeling of the left atrium by 64-multislice cardiac CT: Comparative studies in controls and patients with atrial fibrillation

Park, Mi Jung; Jung, Jung Im; Oh, Yong‐Seog; Youn, Ho‐Joong

doi:10.1016/j.ijcard.2011.02.053

Cited by 15 publications

(22 citation statements)

References 27 publications

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“…Typically, cardiac patients with high or irregular heart rates are restricted to higher-dose, retrospective ECG-gated helical scan modes. However, because of the lack of synchrony between the motion of the heart and the ECG signal and no significant change in left atrial volume over the cardiac cycle in patients with atrial fibrillation, 122 non–ECG-gated imaging may actually be preferable. Non–ECG-gated helical imaging has been shown to provide images relatively free of motion artifacts with low radiation exposure.…”

Section: Introductionmentioning

confidence: 99%

SCCT guidelines on radiation dose and dose-optimization strategies in cardiovascular CT

Halliburton

Abbara

Chen

et al. 2011

Journal of Cardiovascular Computed Tomography

441

271

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Over the last few years, computed tomography (CT) has developed into a standard clinical test for a variety of cardiovascular conditions. The emergence of cardiovascular CT during a period of dramatic increase in radiation exposure to the population from medical procedures and heightened concern about the subsequent potential cancer risk has led to intense scrutiny of the radiation burden of this new technique. This has hastened the development and implementation of dose reduction tools and prompted closer monitoring of patient dose. In an effort to aid the cardiovascular CT community in incorporating patient-centered radiation dose optimization and monitoring strategies into standard practice, the Society of Cardiovascular Computed Tomography has produced a guideline document to review available data and provide recommendations regarding interpretation of radiation dose indices and predictors of risk, appropriate use of scanner acquisition modes and settings, development of algorithms for dose optimization, and establishment of procedures for dose monitoring.

show abstract

Section: Introductionmentioning

confidence: 99%

SCCT guidelines on radiation dose and dose-optimization strategies in cardiovascular CT

Halliburton

Abbara

Chen

et al. 2011

Journal of Cardiovascular Computed Tomography

441

271

View full text Add to dashboard Cite

show abstract

“…The LA serves multiple functions: it acts as a reservoir during systole, a conduit during early diastole, and a pump during late diastole [1,9]. The reservoir function of the LA consists of LA filling during systole and is regulated by atrial compliance [3,10]. In patients with AF, mechanical remodeling of the LA manifests as decreased atrial contractility and increased atrial compliance, which lead to LA enlargement [3,11,12].…”

Section: Discussionmentioning

confidence: 99%

“…Cardiac images were reconstructed into 20 cardiac phases with a 5% R-R interval difference during the cardiac cycle. All images [3,4] have not simultaneously analyzed LV function. Our hypothesis was that AF adversely affects both LA and LV volume and function and that these parameters are at least partially restored when a patient re-enters sinus rhythm.…”

Section: Image Reconstructionmentioning

confidence: 99%

“…The LA and LV diameters were measured with digital calipers on axial images. The two longest perpendicular diameters were measured in the cardiac phase when LA and LV reached the maximum volume [1][2][3]. Images and analysis are shown for a 52-year-old female patient who was 178 cm tall and weighed 70 kg and had an AF episode during the DSCT scan.…”

Section: Measurement Of Left Atrial and Left Ventricular Diameters Anmentioning

confidence: 99%

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Evaluation of Left Atrial and Left Ventricular Function during and between Atrial Fibrillation Episodes by Using Dual-Source Computed Tomography

Sun

Lü

et al. 2018

Cardiovasc Imaging Asia

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Previous studies assessing left atrium (LA) function in patients with atrial fibrillation (AF) have not simultaneously analyzed left ventricle (LV) function. To evaluate differences in LA and LV volume and function in patients with AF during and between AF episodes compared to healthy subjects by using dual-source computed tomography (DSCT). Materials and Methods: Sixty-one consecutive patients with AF and 30 healthy subjects underwent retrospective electrocardiography-gated DSCT. Thirty of 61 AF patients experienced AF during scan acquisition (AF episode subgroup), and 31 were in sinus rhythm (AF non-episode subgroup). LA and LV functions were analyzed with dedicated software and groups were compared with analysis of variance and least significant difference test. Results: The maximal LA volumes in healthy subjects, the AF episode subgroup, and the no AF episode subgroup were 94.4±19.9 mL, 121.8±42.4 mL, and 101.4±32.9 mL, respectively (p=0.005). Left ventricular end-diastolic volumes (LVEDV) in healthy subjects, the AF episode subgroup and the no AF episode subgroup were 160.5±34.4 mL, 131.7±37.3 mL, and 138.1±27.6 mL, and respectively (p=0.003). Left ventricular end-systolic volumes were 55.6± 19.4 mL, 65.2±32.4 mL, and 51.0±14.9 mL, respectively (p=0.060). Increased LA volume, decreased LVEDV, and decreased LA and LV systolic function were found during AF episodes. Conclusion: Our data contributes to understanding the mechanism of AF and guides clinical management of patients with AF.

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“…Park et al [78] reported that different components of the LA have different functions. The LA can be divided into three different parts according to their embryological origin: anterior, posterior including PV, and LAA.…”

Section: Dmentioning

confidence: 99%

Assessment of the structural remodeling of the left atrium by 64-multislice cardiac CT: Comparative studies in controls and patients with atrial fibrillation

Cited by 15 publications

References 27 publications

SCCT guidelines on radiation dose and dose-optimization strategies in cardiovascular CT

SCCT guidelines on radiation dose and dose-optimization strategies in cardiovascular CT

Evaluation of Left Atrial and Left Ventricular Function during and between Atrial Fibrillation Episodes by Using Dual-Source Computed Tomography

The Role of Multimodality Cardiac Imaging in the Management of Patients with Atrial Fibrillation

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