Efficient 3D late gadolinium enhancement imaging using the CLAWS respiratory motion control algorithm
| Autor: | Jennifer Keegan, David N. Firmin, Peter Drivas, Sabine Ernst, Sonya V. Babu-Narayan, Permi Jhooti |
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| Rok vydání: | 2013 |
| Předmět: |
Medicine(all)
lcsh:Diseases of the circulatory (Cardiovascular) system Scanner Control algorithm Radiological and Ultrasound Technology business.industry Image quality Gadolinium Respiratory motion chemistry.chemical_element High resolution 030218 nuclear medicine & medical imaging Acquisition Duration 03 medical and health sciences 0302 clinical medicine chemistry lcsh:RC666-701 Oral Presentation Medicine Late gadolinium enhancement Radiology Nuclear Medicine and imaging Cardiology and Cardiovascular Medicine business Nuclear medicine |
| Zdroj: | Journal of Cardiovascular Magnetic Resonance, Vol 15, Iss Suppl 1, p O63 (2013) Journal of Cardiovascular Magnetic Resonance |
| ISSN: | 1532-429X |
| Popis: | Background Acquisition durations of navigator gated high resolution 3D late gadolinium enhancement (LGE) studies are long (1,2). While implementation of the continuously adaptive windowing strategy (CLAWS (3)) - which results in the fastest possible acquisition duration for a given breathing pattern and navigator acceptance window size - may be beneficial, the respiratory-dependent and therefore, nonsmooth k-space acquisition order during gadolinium wash-out could result in increased image artifact. This study was performed to investigate if CLAWS could be used to increase the respiratory efficiency of 3D LGE imaging without detriment to image quality. Methods Whole-heart 3D (32-36 slices, 1.5 x 1.5 x 4 mm, reconstructed to 64-72 slices, 0.7 x 0.7x.2 mm) inversionprepared segmented gradient echo imaging was performed in 18 consecutive patients on a Siemens 1.5 Tesla Avanto scanner. Two acquisitions were performed in random order, one with CLAWS respiratory motion control and one with an end-expiratory tracking accept/reject |
| Databáze: | OpenAIRE |
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