Abstract:
PURPOSE:To identify sources of error when measuring pelvic organ displacement during straining using triphasic dynamic magnetic resonance imaging (MRI). MATERIALS AND METHODS:Ten healthy nulliparous woman underwent triphasic dynamic 1.5 T pelvic MRI twice with 1 week between studies. The bladder was filled with 200 ml of a saline solution, the vagina and rectum were opacified with ultrasound gel. T2 weighted images in the sagittal plane were analysed twice by each of the two observers in a blinded fashion. Horizontal and vertical displacement of the bladder neck, bladder base, introitus vaginae, posterior fornix, cul-de sac, pouch of Douglas, anterior rectal wall, anorectal junction and change of the vaginal axis were measured eight times in each volunteer (two images, each read twice by two observers). Variance components were calculated for subject, observer, week, interactions of these three factors, and pure error. An overall standard error of measurement was calculated for a single observation by one observer on a film from one woman at one visit. RESULTS:For the majority of anatomical reference points, the range of displacements measured was wide and the overall measurement error was large. Intra-observer error and week-to-week variation within a subject were important sources of measurement error. CONCLUSION:Important sources of measurement error when using triphasic dynamic MRI to measure pelvic organ displacement during straining were identified. Recommendations to minimize those errors are made.
journal_name
Eur J Radioljournal_title
European journal of radiologyauthors
Morren GL,Balasingam AG,Wells JE,Hunter AM,Coates RH,Perry REdoi
10.1016/j.ejrad.2004.05.009keywords:
subject
Has Abstractpub_date
2005-05-01 00:00:00pages
276-83issue
2eissn
0720-048Xissn
1872-7727pii
S0720-048X(04)00180-9journal_volume
54pub_type
杂志文章abstract:INTRODUCTION:Dual-energy dual source CT can almost simultaneously image patients using two different tube potentials, allowing material decomposition and creation of 'virtual unenhanced' (VU) images from post-contrast series. METHODS:75 patients undergoing triple-phase liver CT examinations were imaged using a second ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.03.042
更新日期:2012-07-01 00:00:00
abstract:OBJECTIVE:To study whether calcifications in breast arteries, as seen on mammograms, predict future development of coronary artery calcifications. METHODS:We studied 499 women, aged 49-70 years, participating in a breast cancer screening program and investigated whether arterial calcifications in the breast (BAC) are ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2007.02.009
更新日期:2007-09-01 00:00:00
abstract::Considerable savings in cost and some reduction in gonad dose and contrast medium allergy can be expected if excretory urography can be replaced by real-time ultrasonography as the first examination in upper urinary tract disease. For one year, all patients referred for excretory urography (UG) are first examined with...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:
更新日期:1988-08-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to assess the flap reconstructed hind feet of patients with MRI who were traumatized by land-mine. MATERIALS AND METHODS:T1 and T2 weighted images were obtained in 7 patients, 12 months later the reconstruction of their hind feet by myocutaneous flaps after land-mine trauma. ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2006.11.018
更新日期:2007-08-01 00:00:00
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 conv...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2017.05.027
更新日期:2017-08-01 00:00:00
abstract::Chronic alcoholism is associated with altered brain metabolism, morphology and cognitive abilities. Besides deficits in higher order cognitive functions, alcoholics also show a deficit in the processing of basic sensory information viz. visual stimulation. To assess the metabolic changes associated with this deficit, ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2009.11.003
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:To compare conventional T1-weighted imaging (SE-T1) and chemical shift fat-saturation T1-weighted imaging (FS-T1) in the diagnosis of bone metastases. SUBJECTS:Twenty-two patients (101 vertebrae) with non-neoplastic lesions (Group 1) and 21 patients (72 vertebrae) with spinal metastases (Group 2) were evalua...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/0720-048x(93)90041-k
更新日期:1993-09-01 00:00:00
abstract:OBJECTIVE:Image-guided percutaneous biopsy is the recommended initial diagnostic procedure for suspicious mammographic lesions. This study was conducted to determine the accuracy of the Intact(®) breast lesion excision system (BLES) and to identify predictive factors for complete excision and underestimation. MATERIAL...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.01.049
更新日期:2012-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the clinical outcome of hyaluronan-based arthroscopic autologous chondrocyte transplantation at a minimum of 5 years of follow-up and to correlate it with the MRI evaluation parameters. METHODS:Fifty consecutive patients were included in the study and evaluated clinically using the Cartilage Stan...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2010.04.002
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVE:We examined the detectability of small hepatocellular carcinomas (HCCs) and the factors that affect hyperintensity of small HCC on T1-weighted images (T1W) by using T1-weighted fat-suppressed images (T1FS). METHODS:Thirty-nine HCCs (29 patients) measuring 30 mm or less were enrolled. The mean size of HCCs wa...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(01)00346-1
更新日期:2002-01-01 00:00:00
abstract:PURPOSE:Previous studies have established regional grey matter (GM) loss in multiple sclerosis (MS). However, whether there is any regional GM atrophy in neuromyelitis optica (NMO) and the difference between NMO and MS is unclear. The present study addresses this issue by voxel-based morphometry (VBM). METHODS:Convent...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.01.065
更新日期:2012-02-01 00:00:00
abstract::A retrospective review of the 17 cases of acromegaly, recorded in the hospital and with available CT scans was undertaken in order to determine the presence and of cutis verticis gyrata (CVG) frequency, and the spectrum of other associated radiographic appearances of CVG. The hormone levels were analysed, and the hist...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/s0720-048x(97)00043-0
更新日期:1998-05-01 00:00:00
abstract:OBJECTIVES:To evaluate image quality and radiation dose of single heartbeat 640-slice coronary CT angiography (CCTA) in patients with chronic Atrial Fibrillation (cAF) in comparison with subjects in normal sinus rhythm. METHODS:A cohort of 71 patients with cAF was matched with 71 subjects in normal sinus rhythm (NSR) ...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2014.11.035
更新日期:2015-04-01 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 investigate the value of diffusion-weighted MR imaging (DWI), especially apparent diffusion coefficient (ADC) in the differentiation of uterine adenomyosis and leiomyoma. MATERIALS AND METHODS:17 patients with uterine leiomyoma and 22 patients with uterine adenomyosis underwent diffusion-weighted imaging (D...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.03.026
更新日期:2011-08-01 00:00:00
abstract:OBJECTIVE:To study MRI findings of abdominal wall edema (AWE) in acute pancreatitis as well as correlations between AWE and the severity of acute pancreatitis according to the MR severity index (MRSI) and the Acute Physiology And Chronic Healthy Evaluation III (APACHE III) scoring system. MATERIALS AND METHODS:A total...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2012.04.005
更新日期:2012-11-01 00:00:00
abstract:OBJECTIVES:To evaluate the diagnostic utility of quantitative parameters which generated in different regions of interests (ROIs) of benign and malignant breast lesions using contrast-enhanced sonography(CEUS). MATERIALS AND METHODS:130 patients were evaluated with contrast harmonic imaging after the injection of a bo...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2018.09.005
更新日期:2018-11-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2018.10.029
更新日期:2018-12-01 00:00:00
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journal_title:European journal of radiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ejrad.2012.04.037
更新日期:2012-11-01 00:00:00
abstract::Cardiovascular imaging requires an appreciation of rapidly evolving MR imaging sequences as well as careful utilization of intravascular, extracellular and intracellular MR contrast media. At the present time, clinical studies are restricted to the use of extracellular MR contrast media. MR imaging has the potential t...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/s0720-048x(00)00198-4
更新日期:2000-06-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2006.02.006
更新日期:2006-08-01 00:00:00
abstract:AIM:To ensure optimal timing with pre-operative spiral CT for abdominal aortic aneurysms (AAA), an initial 'timing' single level CT is commonly performed with a small bolus of contrast. This can be exploited to obtain adjunct functional information on renal perfusion. We have investigated the potential of this to measu...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(99)00014-5
更新日期:1999-06-01 00:00:00
abstract::A simple generalization of the diffraction enhanced imaging (DEI) technique, called generalized DEI (GDEI), and its application to tomographic imaging are herein presented. In planar imaging, the GDEI algorithm combines three input images (acquired at different analyzer positions) to deliver three parametric images, p...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2008.04.026
更新日期:2008-12-01 00:00:00
abstract::A survey of present opinions on the safety of diagnostic ultrasound applications is presented together with some data on output levels. Physical mechanisms involved in potential adverse effects are described. Labelling requirements of the equipment are defined and specified. These requirements are contained in a recen...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:
更新日期:1989-02-01 00:00:00
abstract::Ultrasound (US) of chest, even with inherent limitations of the US beam and air, has been useful in many pediatric chest conditions. It has extended its role and is now widely used by many subspecialists in medicine. This review article will cover techniques, indications, and applications of chest US in neonates, infa...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2014.04.011
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:To evaluate feasibility of using GRAPPA to acquire high-resolution 3D contrast-enhanced MR angiography (CE-MRA) of hepatic artery and value of GRAPPA for displaying vessels anatomy. MATERIALS AND METHODS:High-resolution CE-MRA using GRAPPA was performed in 67 orthotopic liver transplantation recipient candid...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2006.11.015
更新日期:2007-03-01 00:00:00
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
pub_type: 杂志文章
doi:10.1016/j.ejrad.2014.02.006
更新日期:2014-05-01 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::The association between mammographic parenchymal patterns and the risk of subsequent breast cancer was studied in a cohort of 17,911 women aged 40-70 years, enrolled in a mammographic screening program. The cohort was prospectively followed-up for 5 years after blind attribution of mammographic pattern. Incident cance...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/0720-048x(93)90048-r
更新日期:1993-09-01 00:00:00
abstract::The main of this work is to determine the elemental and absorption distribution map in breast tissue samples by X-ray fluorescence and X-ray transmission microtomography. The experiments were performed at the X-ray fluorescence beamline (D09B-XRF) in the Brazilian Synchrotron Light Source (LNLS), Campinas, Brazil. A q...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2008.04.047
更新日期:2008-12-01 00:00:00