Abstract：
:The purpose of this study was to assess the performance of a new motion correction algorithm. Twenty-five dynamic MR mammography (MRM) data sets and 25 contrast-enhanced three-dimensional peripheral MR angiographic (MRA) data sets which were affected by patient motion of varying severeness were selected retrospectively from routine examinations. Anonymized data were registered by a new experimental elastic motion correction algorithm. The algorithm works by computing a similarity measure for the two volumes that takes into account expected signal changes due to the presence of a contrast agent while penalizing other signal changes caused by patient motion. A conjugate gradient method is used to find the best possible set of motion parameters that maximizes the similarity measures across the entire volume. Images before and after correction were visually evaluated and scored by experienced radiologists with respect to reduction of motion, improvement of image quality, disappearance of existing lesions or creation of artifactual lesions. It was found that the correction improves image quality (76% for MRM and 96% for MRA) and diagnosability (60% for MRM and 96% for MRA).
journal_name
Eur Radioljournal_title
European radiologyauthors
Herrmann KH,Wurdinger S,Fischer DR,Krumbein I,Schmitt M,Hermosillo G,Chaudhuri K,Krishnan A,Salganicoff M,Kaiser WA,Reichenbach JRdoi
10.1007/s00330-006-0224-3subject
Has Abstractpub_date
2007-01-01 00:00:00pages
259-64issue
1eissn
0938-7994issn
1432-1084journal_volume
17pub_type
杂志文章abstract：OBJECTIVES:To assess whether contralateral parenchymal enhancement reproduces as an independent biomarker for patient survival in an independent patient cohort from a different cancer institution. METHODS:This is a HIPAA-compliant IRB approved retrospective study. Patients with ER-positive/HER2-negative operable invas...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-018-5470-7
更新日期：2018-11-01 00:00:00
abstract：:An electromagnetic-based tracking and navigation system was evaluated for interventional radiology. The electromagnetic tracking system (CAPPA IRAD EMT, CASinnovations, Erlangen, Germany) was used for real-time monitoring of punctures of the lumbar facet joints and intervertebral disks in a spine phantom, three pig ca...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-008-1227-z
更新日期：2009-04-01 00:00:00
abstract：OBJECTIVES:To correlate hepatic and splenic CT perfusion parameters with hepatic venous pressure gradient (HVPG) measurements in patients with cirrhosis. METHODS:Twenty-one patients with cirrhosis (males, 17; females, 4; mean ± SD age, 57 ± 7 years) underwent hepatic and splenic perfusion CT on a 320-detector row volu...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-017-4788-x
更新日期：2017-10-01 00:00:00
abstract：:The purpose of this paper was to investigate the effect of radiologist experience and increasing exposure to CT colonography on reader performance. Three radiologists of differing general experience (consultant, research fellow, trainee) independently analysed 100 CT colonographic datasets. Readers had no prior experi...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-004-2262-z
更新日期：2004-06-01 00:00:00
abstract：OBJECTIVE:To develop a visual rating scale for posterior atrophy (PA) assessment and to analyse whether this scale aids in the discrimination between Alzheimer's disease (AD) and other dementias. METHODS:Magnetic resonance imaging of 118 memory clinic patients were analysed for PA (range 0-3), medial temporal lobe atr...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-011-2205-4
更新日期：2011-12-01 00:00:00
abstract：:Because of its fast scan speed, multi-detector row CT (MDCT) imposes a challenge to optimization of contrast enhancement and scan timing. However, when this challenge is overcome with the use of precisely designed protocols, MDCT provides us with an opportunity to use contrast medium more efficiently and flexibly than...
journal_title：European radiology
pub_type： 杂志文章,评审
doi：10.1007/s10406-005-0165-y
更新日期：2005-12-01 00:00:00
abstract：:Diagnosis of myocardial viability after infarction focuses on the prediction of functional improvement of dysfunctional myocardium after revascularization therapy. Magnetic resonance imaging provides different approaches for the detection of myocardial viability. Measurement of end-diastolic wall thickness is easy to ...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-002-1701-y
更新日期：2003-01-01 00:00:00
abstract：OBJECTIVES:To evaluate thread sign of biliary intraductal papillary mucinous neoplasm (B-IPMN) on magnetic resonance imaging (MRI). METHODS:Thread sign was defined as intraductal linear or curvilinear hypointense striations. Two radiologists independently evaluated the presence and location of thread sign on MR cholan...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-015-4158-5
更新日期：2016-09-01 00:00:00
abstract：OBJECTIVES:To compare [(18)F]FDG PET/MRI with PET/CT for the assessment of bone lesions in oncologic patients. METHODS:This prospective study included 67 patients with solid tumours scheduled for PET/CT with [(18)F]FDG who also underwent a whole-body PET/MRI scan. The datasets (PET/CT, PET/MRI) were rated by two reade...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-014-3229-3
更新日期：2014-08-01 00:00:00
abstract：OBJECTIVES:To evaluate whether post-contrast cone-beam breast CT (CBBCT) alone is comparable to the current standard of combined pre- and post-contrast CBBCT regarding diagnostic accuracy and superior regarding radiation exposure. MATERIAL AND METHODS:This study included 49 women (61 breasts) with median age 57.9 year...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-018-5854-8
更新日期：2019-06-01 00:00:00
abstract：OBJECTIVE:To evaluate the impact of magnetic resonance neurography (MRN) on diagnostic thinking and therapeutic choices in patients with suspected peripheral neuropathy. METHODS:IRB approval was obtained for this HIPAA-compliant study. Questionnaires were administered to six surgeons regarding the diagnosis and treatm...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-015-3958-y
更新日期：2016-05-01 00:00:00
abstract：:The aim of this study was to assess the added diagnostic value of contrast-enhanced US (CEUS) combined with 64-row multidetector CT (CT) in the assessment of hepatocellular nodule vascularity in patients with liver cirrhosis. One hundred and six cirrhotic patients (68 male, 38 female; mean age +/- SD, 70 +/- 7 years) ...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-008-1179-3
更新日期：2009-03-01 00:00:00
abstract：:Peripheral nerve tumors are not frequent, but due to their association with a nerve they are somewhat special. They may be encountered incidentally during evaluation of a soft-tissue mass or when a nerve lesion is clinically suspected and the recognition of such a lesion and its differential diagnosis is key for succe...
journal_title：European radiology
pub_type： 杂志文章,评审
doi：10.1007/s00330-007-0645-7
更新日期：2007-11-01 00:00:00
abstract：:The purpose of this study was to compare the accuracy of an automated volumetry software for phantom pulmonary nodules across various 16-slice multislice spiral CT (MSCT) scanners from different vendors. A lung phantom containing five different nodule categories (intraparenchymal, around a vessel, vessel attached, ple...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-006-0562-1
更新日期：2007-08-01 00:00:00
abstract：:The aim of the study was to evaluate the role of MR urography (MRU) in the diagnosis of obstructive uropathy in selected groups of patients. The groups involved following pathologies: calculi; strictures of ureteropelvic junction (UPJ); benign and malignancy-induced ureterostenosis. Sixty patients with clinical diagno...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-002-1550-8
更新日期：2003-04-01 00:00:00
abstract：:Ankle impingement syndromes are categorised according to their anatomical site around the tibiotalar joint. Anterolateral, anterior and posterior ankle impingement has been extensively described in the orthopaedic and radiology literature with more recent studies describing posteromedial and anteromedial impingement. ...
journal_title：European radiology
pub_type： 杂志文章,评审
doi：10.1007/s00330-007-0675-1
更新日期：2007-12-01 00:00:00
abstract：OBJECTIVES:To identify the relationship between human epidermal growth factor receptor 2 (HER2) status and cone-beam breast CT (CBBCT) characteristics in surgically resected breast cancer. METHODS:Preoperative CBBCT of patients with BI-RADS 4 or 5 lesions identified on mammography or ultrasound and dense or very dense...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-019-06587-w
更新日期：2020-05-01 00:00:00
abstract：OBJECTIVES:To determine the integrative value of clinical, hematological, and computed tomography (CT) radiomic features in survival prediction for locally advanced non-small cell lung cancer (LA-NSCLC) patients. METHODS:Radiomic features and clinical and hematological features of 118 LA-NSCLC cases were firstly extra...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-018-5949-2
更新日期：2019-06-01 00:00:00
abstract：:The authors describe the discovery of ascending colonic variceal veins via celiomesenteric diagnostic angiography following a bout of melena in a 44-year-old woman. Magnetic resonance imaging, including phase-contrast MR venography, allowed visualization of the portal and systemic veins immediately after the initial a...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s003309900308
更新日期：2000-01-01 00:00:00
abstract：:Blunt injury of the extrahepatic bile duct is rare and hence a large series of scientific study of its MRI is difficult to perform. We present the MRI and MR cholangiography of a case of blunt extrahepatic bile duct injury proven at surgery. The diagnosis could be established based on MRI findings of an abrupt taperin...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-001-1296-8
更新日期：2002-10-01 00:00:00
abstract：:Though long considered unlikely because of the resonance pattern of agents such as SonoVue, high frequency applications for small parts and intracavitary applications now seem very promising. Excellent non-linear signals can be obtained at 7 MHz and higher using recently developed CPS software, and preliminary results...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s10406-004-0084-3
更新日期：2004-10-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to evaluate whether the orientation of the heart, measured as an angle between the long axis of the heart and ascending aorta midline (heart-aorta-angle, HAA), associates with ascending aortic (AA) dilatation. Furthermore, the association between HAA and wall shear stress (WSS) was ...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-020-06852-3
更新日期：2020-09-01 00:00:00
abstract：:We here introduce a digital scanning method for determining leg length and angles. The leg length and angle measurements, image quality and radiation dose were evaluated. A composite overview image was reconstructed from a series of individual images. In 45 overview images, the total leg length and the femoro-tibial a...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-004-2352-y
更新日期：2005-01-01 00:00:00
abstract：OBJECTIVES:The current gold standard in the assessment of lateral intracranial dural arteriovenous fistulas (LDAVF) is digital subtraction angiography (DSA). However, magnetic resonance imaging (MRI) is a non-invasive emerging tool for the evaluation of such lesions. The aim of our study was to compare the DSA to our 3...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-016-4335-1
更新日期：2016-12-01 00:00:00
abstract：:Review of the literature shows no report of hibernoma of the thigh extending into the pelvis. Herein we report a case of hibernoma which appeared on CT and MR as a well-defined pelvic mass with contrast enhancement extending through the obturator foramen into the thigh. Fat was demonstrated by CT, whereas MR, using mu...
journal_title：European radiology
pub_type： 杂志文章,评审
doi：10.1007/s003300050419
更新日期：1998-01-01 00:00:00
abstract：OBJECTIVES:To evaluate a whole body (WB) continuous-table-movement (CTM) MR protocol for the assessment of multiple myeloma (MM) in comparison to a step-by-step WB protocol. METHODS:Eighteen patients with MM were examined at 1.5T using a WB CTM protocol (axial T2-w fs BLADE, T1-w GRE sequence) and a step-by-step WB pr...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-010-1865-9
更新日期：2010-12-01 00:00:00
abstract：OBJECTIVE:To evaluate intra-tumour and striated muscle T1 value heterogeneity and the influence of different methods of T1 estimation on the variability of quantitative perfusion parameters. MATERIAL AND METHODS:Eighty-two patients with a histologically confirmed musculoskeletal tumour were prospectively included in t...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-017-4891-z
更新日期：2017-12-01 00:00:00
abstract：OBJECTIVE:To assess the relationship between MRI-derived changes in whole-brain and ventricular volume with change in cognitive scores in Alzheimer's disease (AD), mild cognitive impairment (MCI) and control subjects. MATERIAL AND METHODS:In total 131 control, 231 MCI and 99 AD subjects from the Alzheimer's Disease Ne...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-009-1581-5
更新日期：2010-03-01 00:00:00
abstract：:We evaluated an algorithm for automatic selection of the cardiac phase with the least motion for image reconstruction at coronary computed tomography (CT) angiography (CCTA). We analyzed data of 100 patients (49 female, mean age 59 years) who had undergone retrospectively ECG-gated CCTA. Two experienced observers visu...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-009-1368-8
更新日期：2009-08-01 00:00:00
abstract：OBJECTIVES:In dual-source CT, dual-energy (DE) performance is affected by various X-ray tube voltage combinations with and without tin filter (Sn). The purpose of this study was to assess the utility of the 80/150 Sn kV voltage combination in terms of image artefact and radiation dose for DECT gout protocol, compared w...
journal_title：European radiology
pub_type： 杂志文章
doi：10.1007/s00330-018-5622-9
更新日期：2019-03-01 00:00:00
