کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4225884 1609796 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prospective electrocardiography-triggered CT angiography of the great thoracic vessels in infants and toddlers with congenital heart disease: Feasibility and image quality
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی رادیولوژی و تصویربرداری
پیش نمایش صفحه اول مقاله
Prospective electrocardiography-triggered CT angiography of the great thoracic vessels in infants and toddlers with congenital heart disease: Feasibility and image quality
چکیده انگلیسی

PurposeTo investigate feasibility and image quality and to calculate radiation dose estimates for computed tomography angiography (CTA) of the great thoracic vessels in infants and toddlers with congenital heart disease (CHD) using end-systolic prospective electrocardiography-triggered sequential dual-source data acquisition.MethodsThis study was institutional review board approved; informed consent was obtained. Twenty children (age 1.2 ± 1.1 years) underwent 22 prospective ECG-triggered sequential dual-source CTA examinations (Somatom Definition, Siemens) with tube current (250 mAs/rot) centered at 250 ms past the R-peak in the cardiac cycle (end-systole). Tube voltage was set to 80 kV. Image quality was evaluated by two readers independently using a four-point grading scale (4 = excellent, 1 = non-diagnostic). Radiation dose estimates were calculated from the dose-length-product (DLP).ResultsAll CT images showed diagnostic image quality (mean score 3.67 ± 0.67, κ = 0.85). Stair-step artifacts were present in one and breathing artifacts in 4 patients, with neither impairing diagnostic image quality. Mean heart rate (bpm) was 107.6 ± 12.1 (76–130), mean heart rate variability (bpm) was 2.5 ± 2.0 (1–9). Mean scan length (mm) was 90.7 ± 22.7 (50–134). Mean estimated effective dose was 0.32 ± 0.11 mSv.ConclusionProspective ECG-triggered sequential dual source CTA is feasible in infants and toddlers with CHD, thereby allowing almost motion-free imaging of the great thoracic vessels with the benefit of a low radiation dose.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Radiology - Volume 80, Issue 3, December 2011, Pages e440–e445
نویسندگان
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