MRI of respiratory dynamics with 2D steady-state free-precession and 2D gradient echo sequences at 1.5 and 3 Tesla: an observer preference study.
To compare the image quality of dynamic lung MRI with variations of steady-state free-precession (SSFP) and gradient echo (GRE) cine techniques at 1.5 T and 3 T. Ventilated porcine lungs with simulated lesions inside a chest phantom and four healthy human subjects were assessed with SSFP (TR/TE=2.9/...
| Publicado en: | European Radiology Vol. 19; no. 2; pp. 391 - 400 |
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| Autores principales: | , , , , , , , , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Feb2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105625000&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105625000 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Feb2009 vid: 19 iid: 2 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105625000 36145965 NLM18777025 2010168297 10.1007/s00330-008-1148-x NLM18777025 105625000 ppf: 391 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: MRI of respiratory dynamics with 2D steady-state free-precession and 2D gradient echo sequences at 1.5 and 3 Tesla: an observer preference study. aug: au: Fabel M Wintersperger BJ Dietrich O Eichinger M Fink C Puderbach M Kauczor HU Schoenberg SO Biederer J Fabel, M Wintersperger, B J Dietrich, O Eichinger, M Fink, C Puderbach, M Kauczor, H-U Schoenberg, S O Biederer, J affil: Department of Diagnostic Radiology, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 9, 24105 Kiel, Germany sug: subj: Lung Pathology Magnetic Resonance Imaging Methods Respiratory System Pathology Adult Animal Studies Artifacts Contrast Media Pharmacodynamics Image Interpretation, Computer Assisted Observer Bias Phantoms, Imaging Reproducibility of Results Respiration Respiratory System Radiography Swine Time Factors Human Adult: 19-44 years ab: To compare the image quality of dynamic lung MRI with variations of steady-state free-precession (SSFP) and gradient echo (GRE) cine techniques at 1.5 T and 3 T. Ventilated porcine lungs with simulated lesions inside a chest phantom and four healthy human subjects were assessed with SSFP (TR/TE=2.9/1.22 ms; 3 ima/s) and GRE sequences (TR/TE=2.34/0.96 ms; 8 ima/s) as baseline at 1.5 and 3 T. Modified SSFPs were performed with nine to ten images/s (parallel imaging factors 2 and 3). Image quality for representative structures and artifacts was ranked by three observers independently. At 1.5 T, standard SSFP achieved the best image quality with superior spatial resolution and signal, but equal temporal resolution to GRE. SSFP with improved temporal resolution was ranked second best. Further acceleration (PI factor 3) was of no benefit, but increased artifacts. At 3 T, GRE outranged SSFP imaging with high lesion signal intensity, while artifacts on SSFP images increased visibly. At 1.5 T, a modified SSFP with moderate parallel imaging (PI factor 2) was considered the best compromise of temporal and spatial resolution. At 3 T, GRE sequences remain the best choice for dynamic lung MRI. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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