Pulmonary Venous Anatomy Imaging With Low-Dose, Prospectively ECG-Triggered, High-Pitch 128-Slice Dual-Source Computed Tomography
| Autor: | E. Kevin Heist, Wai-ee Thai, Bryan Wai, Udo Hoffmann, Kaity Lin, Jagmeet P. Singh, Teresa Cheng, Quynh A. Truong |
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| Rok vydání: | 2012 |
| Předmět: |
Male
medicine.medical_specialty Image quality Computed tomography Radiation Dosage Article Pulmonary vein Electrocardiography Heart Conduction System Physiology (medical) Atrial Fibrillation High pitch medicine Humans Sinus rhythm Prospective Studies Venous anatomy medicine.diagnostic_test business.industry Reproducibility of Results Magnetic resonance imaging Atrial fibrillation Middle Aged medicine.disease Pulmonary Veins Radiographic Image Interpretation Computer-Assisted Female Radiology Cardiology and Cardiovascular Medicine business Nuclear medicine Tomography Spiral Computed Follow-Up Studies |
| Zdroj: | Circulation: Arrhythmia and Electrophysiology. 5:521-530 |
| ISSN: | 1941-3084 1941-3149 |
| DOI: | 10.1161/circep.111.968313 |
| Popis: | Background— The efforts to reduce radiation from cardiac computed tomography (CT) are essential. Using a prospectively triggered, high-pitch dual-source CT protocol, we aim to determine the radiation dose and image quality in patients undergoing pulmonary vein (PV) imaging. Methods and Results— In 94 patients (61±9 years; 71% male) who underwent 128-slice dual-source CT (pitch 3.4), radiation dose and image quality were assessed and compared between 69 patients with sinus rhythm and 25 patients with atrial fibrillation. Radiation dose was compared in a subset of 19 patients with prior retrospective or prospectively triggered CT PV scans without high pitch. In a subset of 18 patients with prior magnetic resonance imaging for PV assessment, PV anatomy and scan duration were compared with high-pitch CT. Using the high-pitch protocol, total effective radiation dose was 1.4 (1.3, 1.9) mSv, with no difference between sinus rhythm and atrial fibrillation (1.4 versus 1.5 mSv; P =0.22). No high-pitch CT scans were nondiagnostic or had poor image quality. Radiation dose was reduced with high-pitch (1.6 mSv) compared with standard protocols (19.3 mSv; P P P =0.039). There was excellent agreement of PV anatomy (κ 0.84; P P Conclusions— Using a high-pitch dual-source CT protocol, PV imaging can be performed with minimal radiation dose, short scan acquisition, and excellent image quality in patients with sinus rhythm or atrial fibrillation. This protocol highlights the success of new cardiac CT technology to minimize radiation exposure, giving clinicians a new low-dose imaging alternative to assess PV anatomy. |
| Databáze: | OpenAIRE |
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