Abstract:
OBJECTIVES:To investigate the feasibility of implementing quantitative T1-perfusion in the routine MRA-protocol and to obtain a first experience in normals and pathology. MATERIALS AND METHODS:For perfusion imaging, IR-prepared FLASH (one 4 mm slice at mid-renal level, TR 4.4 ms, TE 2.2 ms, TI 180 ms, FA 50 degrees , matrix 128 x 256, bandwidth per pixel 300, 400 dynamics, temporal resolution 0.3 s, total measurement time 2 min) was applied during the injection of 10 ml of standard 0.5 mmol/ml Gadolinium-DTPA solution at 2 ml/s, followed by 3DCE-MRA with bolus tracking (TR 5.4, TE 1.4, FA 40 degrees , matrix 192 x 512, NSA 1, slice thickness 1.5 mm), using a second dose of 0.1 mmol Gadolinium-DTPA per kg body weight with a maximum of 20 ml. The T1-weighted signals (perfusion data) were converted to tissue tracer concentrations and deconvolved with an inflow corrected AIF; blood flow, distribution volume, mean transit time and blood flow heterogeneity were derived. RESULTS:MRA quality was uncompromised by the first bolus administered for perfusion purposes. In the normals, average cortical RBF, RVD and MTT were 1.2 ml/min/ml (S.D. 0.3 ml/min/ml), 0.4 ml/ml (S.D. 0.1 ml/ml) and 21s (S.D. 4s). These RBF values are lower than those found in the literature, probably due to residual AIF inflow effects. The sensitivity of the technique was sufficient to demonstrate altered perfusion in the examples of pathology. CONCLUSION:Combined quantitative T1-perfusion and MRA have a potential for noninvasive renovascular screening and may provide an anatomical and physiological evaluation of renal status.
journal_name
Eur J Radioljournal_title
European journal of radiologyauthors
Dujardin M,Luypaert R,Vandenbroucke F,Van der Niepen P,Sourbron S,Verbeelen D,Stadnik T,de Mey Jdoi
10.1016/j.ejrad.2007.11.033subject
Has Abstractpub_date
2009-03-01 00:00:00pages
542-9issue
3eissn
0720-048Xissn
1872-7727pii
S0720-048X(07)00591-8journal_volume
69pub_type
杂志文章abstract:OBJECTIVES:Anemia is associated with increased mortality in patients with acute symptomatic pulmonary embolism (PE). The purpose of this study was to evaluate the feasibility of Hounsfield unit (HU) measurements on the single unenhanced trigger slice of pulmonary CT angiography scans for diagnosis of anemia. MATERIAL ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2012.07.008
更新日期:2012-12-01 00:00:00
abstract:BACKGROUND:Radio-contrast media (CM)-related adverse reactions are important clinical problems that may cause fatal anaphylaxis. Accordingly, it has been common practice to premedicate patients who have had previous reactions to CM with corticosteroids, antihistamines, and H2 blockers to prevent hypersensitive reaction...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2010.06.014
更新日期:2011-11-01 00:00:00
abstract:PURPOSE:To evaluate the reduction of artifacts caused by total hip replacements (THR) in dual-layer DECT (DLCT) provided by the combination of virtual monoenergetic images (VMI) and orthopedic metal artifact reduction (MAR). MATERIALS AND METHODS:A total of 24 consecutive patients carrying THR, who received DLCT, were...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2018.12.008
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:To assess the apparent diffusion coefficient (ADC) changes of the normal uterine zones among reproductive women during the menstrual cycle. METHODS:The study included 101 women of reproductive age, each with regular cycle and normal endometrium/myometrium, as proved on histopathology or MR imaging examinati...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.04.057
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:Maintenance of mucosal healing is a primary goal when treating Crohn's disease (CD). Endoscopy is the most precise method for the assessment of mucosal healing, but is considered overly invasive for patients with CD. In contrast, CT enterography (CTE) is less invasive, but little is known about the correlati...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2016.10.022
更新日期:2017-04-01 00:00:00
abstract:INTRODUCTION:Postoperative CSF leak is the most common complication of endoscopic endonasal approach (EEA) to skull base lesions. Endoscopic multilayer closure of skull base defect using pedicled nasoseptal flaps (NSF) based off the sphenopalatine artery reduces CSF leaks. EEA robustly expands in surgical arena, yet po...
journal_title:European journal of radiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ejrad.2012.09.029
更新日期:2013-03-01 00:00:00
abstract:PURPOSE:To explore ipsilateral and contralateral acetabular roof bone stock density in unilateral large head MoM THA whether there is a significant lower acetabular bone stock in the hip with a metal-on-metal (MoM) total hip replacement compared to the contralateral side. Second part of this study is to examine if ther...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2016.01.019
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVE:Legionella pneumonia is usually classified as "atypical pneumonia", which suggests a predominance of interstitial patterns in chest X-rays. Based on a selection of recent clinical cases and a brief review of the literature, the aim of the study is to clarify, how far the actual radiological findings would be ...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2006.08.020
更新日期:2007-01-01 00:00:00
abstract::We examined the potentialities of Magnetic resonance imaging (MRI) in the evaluation of the main cardiomyopathies: hypertrophic, dilated, restrictive and arrhythmogenic right ventricular. The hypertrophic cardiomyopathy is generally adequately investigated by echocardiography, that well defines the myocardial thickeni...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(01)00311-4
更新日期:2001-06-01 00:00:00
abstract:PURPOSE:To retrospectively determine whether the hyperintense hepatocellular carcinomas (HCCs) seen on the hepatobiliary phase of gadoxetic acid-enhanced MR imaging (EOB-MRI) might have different histologic characteristics from usual hypointense HCCs. MATERIALS AND METHODS:Two hundred three surgically proven HCCs from...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2012.07.021
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:To evaluate the opinion and assessment of radiologists, surgeons and medical students on a number of important topics regarding the future of radiology, such as artificial intelligence (AI), turf battles, teleradiology and 3D-printing. METHOD:An online questionnaire was created using the SurveyMonkey platform ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2019.108742
更新日期:2019-12-01 00:00:00
abstract::This is a review of the current strengths and weaknesses of the various imaging modalities available for the diagnosis of suspected non-massive Pulmonary Embolism (PE). Without careful consideration for the clinical presentation, and the timely application of clinical decision support (CDS) methodology, the current ov...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2015.03.023
更新日期:2015-06-01 00:00:00
abstract::This paper discusses ten patients who developed acute cholecystitis during the postoperative period following surgery which did not involve the gall bladder. All were examined with ultrasound during the first two weeks after surgery and were diagnosed as acute cholecystitis. Six (60%) had complications such as empyema...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:
更新日期:1985-02-01 00:00:00
abstract:PURPOSE:To report the diffusion-weighted MRI findings in alveolar echinococcosis (AE) of the liver and evaluate the potential role of apparent diffusion coefficients (ADCs) in the characterisation of lesions. MATERIALS AND METHODS:We retrospectively included 22 patients with 63 AE liver lesions (≥1 cm), examined with ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2013.12.025
更新日期:2014-04-01 00:00:00
abstract:PURPOSE:To assess the usefulness of amide proton transfer (APT) imaging in differentiating parotid tumors. MATERIAL AND METHODS:We retrospectively analyzed 43 histopathologically proven parotid solid tumors with diameters ≥2 cm. Twenty-one tumors were benign and 12 tumors were malignant. Two-dimensional APT imaging wa...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2020.109047
更新日期:2020-08-01 00:00:00
abstract::The objective of this study was to assess the clinical value of pelvimetry to predict dystocia due to cephalopelvic disproportion. 63 patients who had received an abdominal CT scan postpartum were included. Pelvimetry was performed retrospectively with these datasets on a 3D workstation; there were no CT examinations ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2009.04.042
更新日期:2010-06-01 00:00:00
abstract::Crohn's disease is an inflammatory bowel disease (IBD) characterized by a relapsing clinical pattern that typically affects people during their adult and economically productive lives. Affected patients require clinical follow-up because of the periodic flare-up of the disease and of the risk of long-term complication...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2008.11.010
更新日期:2009-03-01 00:00:00
abstract:PURPOSE:To evaluate the diagnostic performance of coronary computed tomography angiography derived fractional flow reserve (CT-FFR) with invasive fractional flow reserve (FFR) in patients with coronary artery disease" before "with invasive fractional flow reserve serving as the reference standard. MATERIALS AND METHOD...
journal_title:European journal of radiology
pub_type: 杂志文章,meta分析,多中心研究
doi:10.1016/j.ejrad.2019.04.011
更新日期:2019-07-01 00:00:00
abstract:PURPOSE:To examine technical parameters of measurement accuracy and differences in tumor response classification using RECIST 1.1 and volumetric assessment in three common metastasis types (lung nodules, liver lesions, lymph node metastasis) simultaneously. MATERIALS AND METHODS:56 consecutive patients (32 female) age...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2013.05.030
更新日期:2013-10-01 00:00:00
abstract:INTRODUCTION:Cerebral CT angiography (CTA) is an established method applied to both the detection and treatment planning of intracranial aneurysms. The aim of our study was to compare CTA and digital subtraction angiography (DSA) findings with the surgical results mainly in patients with acute SAH and to evaluate the c...
journal_title:European journal of radiology
pub_type: 临床试验,杂志文章
doi:10.1016/S0720-048X(03)00173-6
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVES:To reveal the impact on workflow from introducing a dual-room sliding gantry CT to the trauma room for polytrauma and regularly scheduled in- outpatients with regard to efficiency and degree of capacity utilisation. MATERIALS AND METHODS:Time analysis was performed for 30 polytrauma patients each in 2 diffe...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2014.10.013
更新日期:2015-01-01 00:00:00
abstract:PURPOSE:The Prostate Imaging-Reporting and Data System has been developed to standardize prostate MRI in terms of acquisition, interpretation and reporting. It received a major revision in late 2014 (PI-RADSv2). Recently, doubts have been raised on imaging facilities adherence to its acquisition protocol. With this sys...
journal_title:European journal of radiology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ejrad.2019.108662
更新日期:2019-11-01 00:00:00
abstract:PURPOSE:To evaluate the performance of computed tomographic urography (CTU), static-fluid magnetic resonance urography (static-fluid MRU) and combinations of CTU, static-fluid MRU and diffusion weighted imaging (DWI) in the diagnosis of upper urinary tract cancer. MATERIAL AND METHODS:Between January 2010 and June 201...
journal_title:European journal of radiology
pub_type: 社论
doi:10.1016/j.ejrad.2014.02.019
更新日期:2014-06-01 00:00:00
abstract::The Breast Imaging Report and Data System (BIRADS) of the American College of Radiology (ACR) is today largely used in most of the countries where breast cancer screening is implemented. It is a tool defined to reduce variability between radiologists when creating the reports in mammography, ultrasonography or MRI. So...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2006.08.033
更新日期:2007-02-01 00:00:00
abstract::Iodixanol is a new nonionic dimer, isotonic with blood at all concentrations. Iodixanol 320 mgI/ml was compared in a double-blind, randomized study to the ionic dimer ioxaglate 320 mgI/ml for evaluation of safety and efficacy parameters during cerebral arteriography. Eighty adult patients were enrolled and all complet...
journal_title:European journal of radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0720-048x(93)90105-v
更新日期:1993-11-01 00:00:00
abstract:PURPOSE:To evaluate the speed and precision of split renal volume (SRV) measurement, which is the ratio of unilateral renal volume to bilateral renal volume, using a newly developed software for computed tomographic (CT) volumetry and to investigate the usefulness of SRV for the estimation of split renal function (SRF)...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2009.11.013
更新日期:2011-07-01 00:00:00
abstract:PURPOSE:To investigate the impact of traditional (VMI) and noise-optimized virtual monoenergetic imaging (VMI+) algorithms on quantitative and qualitative image quality, and the assessment of stenosis in carotid and intracranial dual-energy CTA (DE-CTA). MATERIALS AND METHODS:DE-CTA studies of 40 patients performed on...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2017.12.024
更新日期:2018-02-01 00:00:00
abstract:OBJECTIVE:To obtain T2* and proton density measurements of normal human lung parenchyma in vivo using submillisecond echo time (TE) gradient echo (GRE) magnetic resonance (MR) imaging. MATERIALS AND METHODS:Six normal volunteers were scanned using a 1.5-T system equipped with a prototype enhanced gradient (GE Signa, W...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(98)00169-7
更新日期:1999-03-01 00:00:00
abstract::Contrast-enhanced sonography is a widely available imaging modality for the diagnosis of pancreatic diseases. With this procedure, pancreatic tumours can be differentiated better. Furthermore, contrast-enhanced sonography produces good results in the staging of acute pancreatitis severity, especially in the detection ...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2007.06.035
更新日期:2007-11-01 00:00:00
abstract::Fractures involving the articulating surfaces of bone are a common cause of joint disability. Management options are as numerous as the terms used to describe these lesions. These terms include osteochondral, transchondral, flake or chip fractures as well as osteochondrosis (osteochondritis) dissecans. The understandi...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/0720-048x(95)00707-w
更新日期:1996-03-01 00:00:00