Reduction of Ringing Artifacts in the Arterial Phase of Gadoxetic Acid-enhanced Dynamic MR Imaging
スポンサーリンク
概要
- 論文の詳細を見る
Purpose: We assessed what MR imaging parameters affected ringing artifacts during the arterial phase of gadoxetic acid-enhanced dynamic magnetic resonance (MR) imaging. Materials and Methods: We tested various parameters, including imaging matrices, choice of either sequential or elliptical centric phase-encoding scheme, scanning time, and contrast injection rate using new simulation software on a personal computer and visually evaluated clinical MR images retrospectively using a 4-point scale to assess ringing artifacts. Results: The simulation study revealed that square matrices, short scanning time, slow injection rate, and sequential view ordering effectively reduced ringing artifacts, findings confirmed in clinical practice using gadoxetic acid-enhanced MR imaging. Significantly fewer artifacts resulted using a slow injection rate (P<0.05) and using square matrices in the arterial (P<0.05), portal (P<0.01), and hepatocytic (P<0.05) phases. Conclusion: Choice of square matrix, slower injection rate, shorter scanning time, and sequential view ordering could reduce ringing artifacts.
- 2012-06-01
著者
-
Tanimoto Akihiro
Department Of Diagnostic Radiology Keio University School Of Medicine
-
Higuchi Nobuya
Department Of Diagnostic Radiology Keio University School Of Medicine
-
UENO Akihisa
Department of Diagnostic Radiology, Keio University School of Medicine
-
Ueno Akihisa
Department Of Diagnostic Radiology Keio University School Of Medicine
関連論文
- Inflammatory Pseudotumor of the Liver Masquerading as Hepatocellular Carcinoma After a Hepatitis B Virus Infection : Report of a Case
- Evaluation of Superparamagnetic Iron Oxide for MR Imaging of Liver Injury : Proton Relaxation Mechanisms and Optimal MR Imaging Parameters
- Hepatocyte-Targeted MR Contrast Agents : Contrast Enhanced Detection of Liver Cancer in Diffusely Damaged Liver
- Routine MR Imaging Protocol with Breath-hold Fast Scans : Diagnostic Efficacy for Focal Liver Lesions
- Superparamagnetic iron oxide-enhanced MR imaging for focal hepatic lesions : a comparison with CT during arterioportography plus CT during hepatic arteriography
- Questionnaire Survey of Acute and Delayed Adverse Reactions to Ferumoxides
- Basic Design and Synthesis of Sulfonated Contrast Agents for Magnetic Resonance Imaging Based on Gadolinium Complexes
- Evaluation of Ischemic Heart Disease on a 1.5 Tesla Scanner : Combined First-pass Perfusion and Viability Study
- Application of superparamagnetic iron oxide for hepatic tumor diagnosis
- Prognostic Value of Cardiac Magnetic Resonance Imaging for Idiopathic Pulmonary Arterial Hypertension Before Initiating Intravenous Prostacyclin Therapy
- Reduction of Ringing Artifacts in the Arterial Phase of Gadoxetic Acid-enhanced Dynamic MR Imaging
- Reduction in the Vascular Bed Volume of Uterine Fibroids after Hormonal Treatment: Evaluation with Dynamic Double-Echo R2* Imaging
- What is the Most Effective Tool for Detecting Prostate Cancer using a Standard MR Scanner?
- Natural Course of Hypovascular Nodules Detected on Gadoxetic Acid-enhanced MR Imaging: Presence of Fat is a Risk Factor for Hypervascularization
- Reduction in the Vascular Bed Volume of Uterine Fibroids after Hormonal Treatment : Evaluation with Dynamic Double-Echo R_2^* Imaging