Abstract：
PURPOSE:Regurgitant fraction (RF) measured from 2D phase-contrast MRI has been used as a standard to quantitate the degree of pulmonary regurgitation and serves as a determinant indicator of prognosis for tetralogy of Fallot after surgical repair. This study demonstrated the potential underestimate of RF using the conventional definition and its impact on clinical decision when backward flow occurred during systolic periods. METHODS:Quantitative flow parameters, including forward flow volume (FFV), backward flow volume (BFV), and RF were estimated by two approaches: One derived from conventional ROI-averaged curve (bulk quantity) and the other in a pixel-wise manner to spatially reflect inhomogeneous flow profile (pixel-wise quantity). Eccentricity at systolic peak (Eccsys) was adopted as an index reflecting spatial flow inhomogeneity. RESULTS:Flow parameters derived from ROI-averaged curves on main pulmonary artery were significantly smaller than that of pixel-wise measurement (P<0.001). Difference between RFbulk and RFpx for the group of Eccsys > 0.3 appears greater compared to the group with Eccsys < 0.3. Thirteen out of 68 RF values (19%) were underrated while using bulk analysis. CONCLUSIONS:The spatial-related flow parameters showed more consistency with the qualitative flow profile pattern for pulmonary arteries, and could be a decisive complement for diagnostic classification.
journal_name
Eur J Radioljournal_title
European journal of radiologyauthors
Wu PH,Chung HW,Wu MT,Ko CWdoi
10.1016/j.ejrad.2017.05.027subject
Has Abstractpub_date
2017-08-01 00:00:00pages
46-51eissn
0720-048Xissn
1872-7727pii
S0720-048X(17)30206-1journal_volume
93pub_type
杂志文章abstract：BACKGROUND:The assessment of liver damage in various disease states relies on a combination of clinical findings, biochemical parameters and invasive tests such as liver biopsy. The ultrasound elastography has emerged as a potential alternative test, providing quantifiable information on the elasticity/stiffness of the...
journal_title：European journal of radiology
pub_type： 杂志文章
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abstract：:A wide spectrum of pulmonary complications occurs in patients with pneumoconiosis. Those complications include chronic obstructive pulmonary disease, hemoptysis, pneumothorax, pleural disease, tuberculosis, autoimmune disease, anthracofibrosis, chronic interstitial pneumonia, and malignancy. Generally, imaging workup ...
journal_title：European journal of radiology
pub_type： 杂志文章,评审
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abstract：BACKGROUND & AIMS:Neurocognitive impairment is a common complication of cirrhosis and regarded as the important characteristic for early stage of hepatic encephalopathy (HE). This study aimed to investigate the changes in brain network centrality of functional connectivity among cirrhotic patients and uncover the mecha...
journal_title：European journal of radiology
pub_type： 杂志文章
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abstract：OBJECTIVE:Our purpose was to evaluate whether breast cancer with high metabolic-perfusion ratio would be associated with poor histopathologic prognostic factors and whether triple negative breast cancer (TNBC) would show high metabolic-perfusion ratio compared to non-triple negative breast cancer (non-TNBC). METHODS:F...
journal_title：European journal of radiology
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abstract：:The impact of fast MR techniques developed for MR imaging of the lung will soon be recognized as equivalent to the high-resolution technique in chest CT imaging. In this article, the difficulties in MR imaging posed by lung morphology and its physiological motion are briefly introduced. Then, fast MR imaging technique...
journal_title：European journal of radiology
pub_type： 杂志文章,评审
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abstract：OBJECTIVE:To evaluate brachial plexus MRI accuracy with surgical findings and clinical follow-up as reference standard in a large multicentre study. MATERIALS AND METHODS:The research was approved by the Institutional Review Boards, and all patients provided their written informed consent. A multicentre retrospective ...
journal_title：European journal of radiology
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abstract：INTRODUCTION:Concerning the preoperative clinical diagnostic work-up of glioma patients, tumor heterogeneity challenges the oncological therapy. The current study assesses the performance of a multimodal imaging approach to differentiate between areas in malignant gliomas and to investigate the extent to which such a c...
journal_title：European journal of radiology
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abstract：:Computed tomography (CT) has developed a well-recognised role within paediatric uroradiology, especially in imaging of trauma, malignancy (in particular Wilms' tumour), atypical infection, and congenital urogenital abnormalities. CT can also be used for problem solving in nephrolithiasis and renal transplant assessmen...
journal_title：European journal of radiology
pub_type： 杂志文章,评审
doi：10.1016/s0720-048x(02)00115-8
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abstract：:In vivo generated positron emitting radioisotopes, primarily C-11 and N-13, have been documented following therapy with accelerators larger than 10 MeV. Six patients had positron emission tomography 15 to 25 minutes after radiation therapy with a 42 MeV accelerator. Five patients had recurrent colorectal malignancy, a...
journal_title：European journal of radiology
pub_type： 杂志文章
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abstract：:The purpose of this study was to evaluate by CT the usefulness of the non-distension of the stomach in determining invasion of the gastric cancer into perigastric space and adjacent organs. Forty-eight patients with pathologically proved gastric cancer were studied by conventional CT. Patients were examined using two ...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/s0720-048x(98)00024-2
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journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2003.08.006
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abstract：:Although magnetic resonance imaging has become the dominant modality for cross-sectional musculo-skeletal imaging, the widespread availability, speed, and versatility of computed tomography (CT) continue to make it a mainstay of emergency room (ER) diagnostic imaging. Pelvic ring and acetabular fractures occur as the ...
journal_title：European journal of radiology
pub_type： 杂志文章,评审
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pub_type： 杂志文章,随机对照试验
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更新日期：2014-04-01 00:00:00
abstract：:The purpose of this study was to investigate whether dynamic contrast enhanced MRI (DCE-MRI) data, both pharmacokinetic and empirical, can predict, prior to neoadjuvant chemotherapy, which patients are likely to have a shorter disease free survival (DFS) and overall survival (OS) interval following surgery. Traditiona...
journal_title：European journal of radiology
pub_type： 临床试验,杂志文章
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abstract：:Immediate morphological alterations in the vascular endothelium were studied in the common iliac artery and muscle capillaries of the rat after perfusions ranging from 3 to 120 seconds. Isotonic meglumine diatrizoate and saline produced no perceptible changes. Hypertonic solutions produced cell shrinkage and deformati...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：
更新日期：1984-02-01 00:00:00
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journal_title：European journal of radiology
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更新日期：1988-05-01 00:00:00
abstract：PURPOSE:To assess right ventricular (RV) dysfunction in end-stage renal disease (ESRD) patients on maintenance haemodialysis (HD) by cardiac magnetic resonance (CMR) imaging and determined the risk factors associated with RV dysfunction. MATERIALS AND METHODS:Fifty ESRD patients on maintenance HD and 16 age- and gende...
journal_title：European journal of radiology
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更新日期：2018-05-01 00:00:00
abstract：PURPOSE:To obtain diffusion and microperfusion measures in lymph node metastases of head and neck squamous cell carcinomas (HNSCC) using intravoxel incoherent motion (IVIM) imaging. The obtained IVIM parameters were used to characterize lymph nodes in the staging phase and longitudinal follow-up was performed to evalua...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2014.02.013
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journal_title：European journal of radiology
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journal_title：European journal of radiology
pub_type： 杂志文章,评审
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journal_title：European journal of radiology
pub_type： 杂志文章
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journal_title：European journal of radiology
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journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2007.02.009
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journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2011.12.033
更新日期：2012-04-01 00:00:00
abstract：PURPOSE:To investigate associations between imaging features of tumors and age, gender and body mass index (BMI) in patients with renal cell carcinoma. METHOD:This IRB-approved, HIPAA-compliant study included 1348 patients with histopathologically confirmed renal cell carcinoma of the clear cell subtype (ccRCC, n = 90...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2020.109096
更新日期：2020-08-01 00:00:00
abstract：:Disorders of the major airways in children are often difficult to treat. Recent advances in interventional radiology are proving useful, for both assessment of the severity of the problem and treatment. Flexible bronchoscopy and bronchography are essential tools for diagnosis, intervention and follow-up. Echocardiogra...
journal_title：European journal of radiology
pub_type： 杂志文章,评审
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更新日期：2005-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate the enhancement pattern and the diagnostic accuracy of gadofluorine M in comparison with gadopentetate dimeglumine in a rabbit VX2 tumor model. MATERIALS AND METHODS:Thirteen rabbits with experimentally induced VX2 carcinomas in the thighs underwent sequential T1-wei...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2011.03.044
更新日期：2012-08-01 00:00:00
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journal_title：European journal of radiology
pub_type： 杂志文章,评审
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更新日期：2005-07-01 00:00:00
abstract：PURPOSE:To investigate the factors that could cause a misdiagnosis in virtual touch tissue imaging and quantification (VTIQ) when differentiating benign and malignant breast lesions, and to analyze the imaging characteristics of those lesions with incorrect findings. METHODS:The conventional ultrasound (CUS) features ...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2018.11.021
更新日期：2019-01-01 00:00:00
abstract：:The appropriate diagnosis and treatment of bone tumors requires close collaboration between different medical specialists. Imaging plays a key role throughout the process. Radiographic detection of a bone tumor is usually not challenging. Accurate diagnosis is often possible from physical examination, history, and sta...
journal_title：European journal of radiology
pub_type： 杂志文章
doi：10.1016/j.ejrad.2011.11.034
更新日期：2013-12-01 00:00:00
