Technical principles of computed tomography in patients with congenital heart disease

Stinn, Bjoern; Stolzmann, Paul; Fornaro, Jürgen; Hibbeln, Dennis; Alkadhi, Hatem; Wildermuth, Simon; Leschka, Sebastian

doi:10.1007/s13244-011-0088-1

Cited by 15 publications

(14 citation statements)

References 24 publications

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“…MSCT has the advantages of fast scanning speed, high resolution, powerful image post-processing, and clear visualization of the anatomic structures of the cardiac chambers and great vessels [3, 4]. The sensitivity of children to X-rays is higher than that of adults, such that their risk of complications associated with radiation exposure is also greater than that of adults [13, 26]. Although decreasing the tube voltage and current can effectively reduce the dose of radiation received by a patient, the level of radiation exposure in children can remain high in the absence of prospective ECG-gating.…”

Section: Discussionmentioning

confidence: 99%

Comparison of 128-Slice Low-Dose Prospective ECG-Gated CT Scanning and Trans-Thoracic Echocardiography for the Diagnosis of Complex Congenital Heart Disease

et al. 2016

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ObjectiveTo compare prospective ECG-gated multi-slice computed tomography (MSCT) and trans-thoracic echocardiography (TTE) in the diagnosis of complex congenital heart disease (CHD).MethodsThis was a prospective study of consecutive patients with complex CHD (age <7 years) treated at a tertiary hospital between May 2013 and May 2015. All patients were imaged with TTE and prospective ECG-gated 128-slice spiral CT in the week before surgery. Effective radiation dose (ED) was calculated from volume CT dose index (CTDIvol) and dose length product (DLP). Image quality (5-point scale) was assessed independently by two radiologists. Using surgical findings as the reference, the diagnostic capabilities of MSCT and TTE were compared.ResultsThirty-five patients (19 males) aged 1.59±1.58 years (range, 3 days to 74 months) were included. CTDIvol, DLP and ED were 0.90±0.24 mGy, 12.9±4.7 mGy∙cm and 0.64±0.21 mSv (range, 0.358–1.196 mSv), respectively. Image quality score was 4.3±0.5, and all images met the diagnostic requirements. The sensitivity, specificity, positive predictive value, and negative predictive value for diagnosing CHD were 97.2%, 99.8%, 99.0%, and 99.5%, respectively, for MSCT, and 90.6%, 99.8%, 99.0%, and 98.4%, respectively, for TTE. MSCT not only had a higher sensitivity than TTE overall (97.2% vs. 90.6%; P<0.05), but was much more sensitive for the diagnosis of extracardiac vascular abnormalities (92.0% vs. 68.0%; P<0.05).Conclusion128-slice low-dose prospective ECG-gated CT scanning has important clinical value in the diagnosis of complex CHD in children, complementing and extending the findings of TTE.

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Section: Discussionmentioning

confidence: 99%

Comparison of 128-Slice Low-Dose Prospective ECG-Gated CT Scanning and Trans-Thoracic Echocardiography for the Diagnosis of Complex Congenital Heart Disease

et al. 2016

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“…The second generation DSCT system is equipped with a high-pitch data acquisition mode with pitch values of up to 3.4 by filling the gaps with the data acquired with the second detector system [ 15 , 16 ]. This high pitch acquisition mode is fast, reducing the scan time for the entire aorta to only about 2 seconds [ 17 , 18 ] and allowing for low radiation dose. Also, this CT system has improved gantry rotation time up to 0.28 s, which leads to a high temporal resolution of 75 ms for each acquired slice [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

The ascending aortic image quality and the whole aortic radiation dose of high-pitch dual-source CT angiography

Liu

et al. 2013

J Cardiothorac Surg

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BackgroundAortic dissection is a lift-threatening medical emergency associated with high rates of morbidity and mortality. The incidence rate of aortic dissection is estimated at 5 to 30 per 1 million people per year. The prompt and correct diagnosis of aortic dissection is critical. This study was to compare the ascending aortic image quality and the whole aortic radiation dose of high-pitch dual-source CT angiography and conventional dual-source CT angiography.MethodsA total of 110 consecutive patients with suspected aortic dissection and other aortic disorders were randomly divided into two groups. Group A underwent traditional scan mode and Group B underwent high-pitch dual-source CT scan mode. The image quality and radiation dose of two groups were compared.ResultsClose interobserver agreement was found for image quality scores (κ = 0.87). The image quality of ascending aorta was significantly better in the high-pitch group than in the conventional group (2.78 ± 0.46 vs 1.57 ± 0.43, P < 0.001). There was no significant difference of the CT attenuation values, the aortic image noise and SNR between two groups. The mean radiation dose of high-pitch group was also significantly lower than that of conventional group (2.7 ± 0.6 mSv vs. 3.9 ± 0.9 mSv, P < 0.001).ConclusionsHigh-pitch dual-source CT angiography of the whole aorta can provide motion-artifact-free imaging of the ascending aorta at a low radiation dose compared to conventional protocol.

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“…Furthermore, it allows imaging vascular structures as small as 1-2 mm. In cardiology, MDCT is the non-invasive first-line modality used for the detection of coronary abnormalities and other cardiac diseases [ 15 ]. Some studies pointed out that MDCT is also valid to study shunt-size, location, and flow direction.…”

Section: Discussionmentioning

confidence: 99%

Multidetector Computed Tomography (CT) in Evaluation of Congenital Cyanotic Heart Diseases

et al. 2018

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SummaryBackgroundThe aim of the study is to emphasize the role of 128 MSCT angiography in the diagnosis of congenital cyanotic heart diseases.Material/MethodsThis study included sixty patients and was conducted from December 2014 to July 2016 in the Multidetector CT unit of Zagazig University hospitals. All images included axial, MPR, MIP, and VRT and were interpreted in one session. Pulmonary veins were assessed for PAPVR or TAPVR, PDA, cardiac apex and heart chambers, interatrial or interventricular septal defects, pericardium, and site and size of the great veins (IVC and SVC).ResultsThis study included 60 patients. Thirty-four were boys (56.7%), and 26 were girls (43.3%). The age ranged from nine months to five years, and the mean age was 34.5 months. We found the following anomalies: tetralogy of Fallot (15 patients, 25%), tricuspid atresia (12 patients, 20%), Ebstein’s anomaly (4 patients, 6.5%), pulmonic atresia or stenosis (7 patients, 11.5%), truncus arteriosus (6 patients, 10%), TGA (10 patients, 17%), and TAPVR (6 patients, 10%).ConclusionsMDCT proved to be an important modality for decision-making in patients with congenital cyanotic heart diseases.

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Technical principles of computed tomography in patients with congenital heart disease

Cited by 15 publications

References 24 publications

Comparison of 128-Slice Low-Dose Prospective ECG-Gated CT Scanning and Trans-Thoracic Echocardiography for the Diagnosis of Complex Congenital Heart Disease

Comparison of 128-Slice Low-Dose Prospective ECG-Gated CT Scanning and Trans-Thoracic Echocardiography for the Diagnosis of Complex Congenital Heart Disease

The ascending aortic image quality and the whole aortic radiation dose of high-pitch dual-source CT angiography

Multidetector Computed Tomography (CT) in Evaluation of Congenital Cyanotic Heart Diseases

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