Abstract:
OBJECTIVES:To compare single-energy (SECT) and dual-energy (DECT) abdominal CT examinations in matched patient cohorts regarding differences in radiation dose and image quality performed with second- and third-generation dual-source CT (DSCT). METHODS:We retrospectively analysed 200 patients (100 male, 100 female; mean age 61.2 ± 13.5 years, mean body mass index 27.5 ± 3.8 kg/m2) equally divided into four groups matched by gender and body mass index, who had undergone portal venous phase abdominal CT with second-generation (group A, 120-kV-SECT; group B, 80/140-kV-DECT) and third-generation DSCT (group C, 100-kV-SECT; group D, 90/150-kV-DECT). The radiation dose was normalised for 40-cm scan length. Dose-independent figure-of-merit (FOM) contrast-to-noise ratios (CNRs) were calculated for various organs and vessels. Subjective overall image quality and reader confidence were assessed. RESULTS:The effective normalised radiation dose was significantly lower (P < 0.001) in groups C (6.2 ± 2.0 mSv) and D (5.3 ± 1.9 mSv, P = 0.103) compared to groups A (8.8 ± 2.3 mSv) and B (9.7 ± 2.4 mSv, P = 0.102). Dose-independent FOM-CNR peaked for liver, kidney, and portal vein measurements (all P ≤ 0.0285) in group D. Subjective image quality and reader confidence were consistently rated as excellent in all groups (all ≥1.53 out of 5). CONCLUSIONS:With both DSCT generations, abdominal DECT can be routinely performed without radiation dose penalty compared to SECT, while third-generation DSCT shows improved dose efficiency. KEY POINTS:• Dual-source CT (DSCT) allows for single- and dual-energy image acquisition. • Dual-energy acquisition does not increase the radiation dose in abdominal DSCT. • Third-generation DSCT shows improved dose efficiency compared to second-generation DSCT. • Dose-independent figure-of-merit image contrast was highest with third-generation dual-energy DSCT. • Third-generation DSCT shows improved dose efficiency for SECT and DECT.
journal_name
Eur Radioljournal_title
European radiologyauthors
Wichmann JL,Hardie AD,Schoepf UJ,Felmly LM,Perry JD,Varga-Szemes A,Mangold S,Caruso D,Canstein C,Vogl TJ,De Cecco CNdoi
10.1007/s00330-016-4383-6subject
Has Abstractpub_date
2017-02-01 00:00:00pages
642-650issue
2eissn
0938-7994issn
1432-1084pii
10.1007/s00330-016-4383-6journal_volume
27pub_type
杂志文章abstract:OBJECTIVES:To evaluate post-ablation MRI for the detection of incompletely treated spinal osseous metastases (SOM) after cryoablation and to propose a post-ablation imaging classification. METHODS:After IRB consent, all patients treated with cryoablation of SOM between 2011 and 2017 having at least 1-year minimum foll...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-019-06040-y
更新日期:2019-10-01 00:00:00
abstract:OBJECTIVE:To assess the efficacy of computed diffusion-weighted images (cDWIs) of b = 2000 s/mm(2) (cDWI2000) generated from DWIs of b = 0 and 1000 for prostate cancer (PCa) diagnosis in comparison with that of measured original DWIs of b = 1000 (mDWI1000) and b = 2000(mDWI2000) using 3-T MRI. METHODS:Eighty patients ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-013-2958-z
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVE:To determine the diagnostic accuracy of diffusion-weighted (DW) magnetic resonance (MR) imaging in the preoperative assessment of myometrial invasion by endometrial cancer. MATERIALS AND METHODS:In this prospective study, 47 patients with histologically confirmed endometrial cancer underwent preoperative MR ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-009-1597-x
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVES:To assess the coronary atherosclerosis profile by coronary computed tomography angiography (CTA) in patients with end-stage liver disease (ESLD) due to alcohol-related liver disease (ARLD) evaluated for liver transplantation (LT), in a retrospective matched case-controlled cohort study. METHODS:One hundred ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07037-8
更新日期:2021-01-01 00:00:00
abstract::Many disease processes manifest either primarily or secondarily by cranial nerve deficits. Neurologists, ENT surgeons, ophthalmologists and maxillo-facial surgeons are often confronted with patients with symptoms and signs of cranial nerve dysfunction. Seeking the cause of this dysfunction is a common indication for i...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s00330-006-0575-9
更新日期:2007-08-01 00:00:00
abstract::The aim of this study was to assess whether magnetic resonance imaging could predict the outcome of attempted vaginal delivery in a group of pregnant women whose parturition had to be induced by oxytocin. The signal intensity and morphology alterations in the cervix of 21 full-term pregnant women were analyzed before ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300051001
更新日期:2000-01-01 00:00:00
abstract::To evaluate long-term effects of arterial embolization (AE) for postpartum hemorrhage (PPH) on menses recovery and subsequent pregnancies. One hundred thirteen consecutive patients, recruited from 1999 to 2006, who had undergone AE for severe PPH were evaluated in a retrospective monocentric study. As embolization age...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-008-1140-5
更新日期:2009-02-01 00:00:00
abstract::The aim of this study was to test the influence of observer experience on the accuracy for interpreting helical CT for acute pulmonary embolism (PE) and to identify sources of observer errors. Three observers of different expertise blindly assessed 147 helical CT scans for suspected PE (true status regarding absence o...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050526
更新日期:1998-01-01 00:00:00
abstract:OBJECTIVE:To design clear guidelines for the staging and follow-up of patients with uterine cervical cancer, and to provide the radiologist with a framework for use in multidisciplinary conferences. METHODS:Guidelines for uterine cervical cancer staging and follow-up were defined by the female imaging subcommittee of ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-010-1998-x
更新日期:2011-05-01 00:00:00
abstract:UNLABELLED:In a recent paper, the authors oppose the opinion that " intra-arterial administration of iodinated-based contrast media (CM) appears to pose a greater risk of contrast-induced nephropathy (CIN) than intravenous administration" . As nephrologists, we are happy to have the opportunity to offer our expertise i...
journal_title:European radiology
pub_type: 评论,信件
doi:10.1007/s00330-012-2720-y
更新日期:2013-05-01 00:00:00
abstract:OBJECTIVE:Evaluate the performance of a robotic system for CT-guided lung biopsy in comparison to the conventional manual technique. MATERIALS AND METHODS:One hundred patients referred for CT-guided lung biopsy were randomly assigned to group A (robot-assisted procedure) or group B (conventional procedure). Size, dist...
journal_title:European radiology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00330-014-3508-z
更新日期:2015-05-01 00:00:00
abstract:OBJECTIVES:Previous studies using transthoracic echocardiography (TTE) observed moderate heritability of aortic root dimensions. Computed tomography angiography (CTA) might provide more accurate heritability estimates. Our primary aim was to assess the heritability of the aortic root with CTA. Our secondary aim was to ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4590-1
更新日期:2017-06-01 00:00:00
abstract::Coincidence of dorsal defect on a multipartite patella constitutes a rare cause of anterior knee pain in the first decades of life. Imaging findings of this uncommon symptomatic skeletal variant are discussed, with emphasis on MR features. ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300000724
更新日期:2001-01-01 00:00:00
abstract::We describe the pace of recruitment of iron-oxide-labeled macrophages to the site of different stages of infection by in vivo magnetic resonance (MR) imaging. Peritoneal macrophages were labeled with superparamagnetic iron oxide ex vivo and administered through the tail vein 6 (acute) or 48 (subacute) h after bacteria...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-008-0975-0
更新日期:2008-10-01 00:00:00
abstract:PURPOSE:To evaluate quantitative iodine density mapping (IDM) with spectral detector computed tomography (SDCT) as a quantitative biomarker for separation of vertebral trabecular bone metastases (BM) from healthy-appearing trabecular bone (HTB). MATERIALS AND METHODS:IRB-approved retrospective single-center-study of p...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5843-y
更新日期:2019-06-01 00:00:00
abstract::CT-guided procedures remain an important tool for diagnosis and tissue acquisition for primary diagnosis and molecular/tissue correlation. New imaging devices such as MDCT and PET/CT will improve diagnosis but percutaneous procedures will be needed to confirm and support new molecular and DNA treatments. Coagulopathic...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s10406-005-0130-9
更新日期:2005-11-01 00:00:00
abstract:INTRODUCTION:The aim of the study was to extract anthropometric measures from CT by deep learning and to evaluate their prognostic value in patients with non-small-cell lung cancer (NSCLC). METHODS:A convolutional neural network was trained to perform automatic segmentation of subcutaneous adipose tissue (SAT), viscer...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-019-06630-w
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVES:To investigate the hepatobiliary enhancement patterns of gadoxetic acid (Gd-EOB-DTPA) MRI and the temporal evolution of focal nodular hyperplasia (FNH)-like lesions in pediatric cancer survivors. METHODS:We retrospectively included pediatric cancer survivors who had new liver lesions detected during surveil...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07157-1
更新日期:2021-01-01 00:00:00
abstract::Two cases of agenesis of the horizontal segment of the left portal vein are reported. This very rare vascular anomaly probably corresponds to an embryological variation rather than to an obstruction of the left portal vein. In almost all cases liver ultrasonography is sufficient for identifying such vascular abnormali...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050057
更新日期:2000-01-01 00:00:00
abstract::The aim of this study was to evaluate the feasibility of endoluminal stent-graft placement in an angiographic suite for the treatment of emergent type-B aortic dissections and ruptured thoracic aortal aneurysms. Twenty-six patients with either urgent type-B dissection (n=8) or aneurysms (n=18) of the descending thorac...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-003-1921-9
更新日期:2003-10-01 00:00:00
abstract::(19)F MRI is emerging as a new imaging technique for cell tracking. It is particularly attractive because of its potential for direct and precise cell quantification. The most important challenge towards in vivo applications is the sensitivity of the technique, i.e. the detection limit in a reasonable imaging time. Op...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3474-5
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVES:To analyse the implementation, applicability and accuracy of the pretest probability calculation provided by NICE clinical guideline 95 for decision making about imaging in patients with chest pain of recent onset. METHODS:The definitions for pretest probability calculation in the original Duke clinical sco...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5322-5
更新日期:2018-09-01 00:00:00
abstract::The aim of this study was to assess the costs and effectiveness of selective short magnetic resonance imaging (MRI) in patients with acute knee injury. A model was developed to evaluate the selective use of MRI in patients with acute knee injury and no fracture on radiography based on the results of a trial in which 2...
journal_title:European radiology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00330-008-1162-z
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVES:To evaluate the safety and efficacy of balloon-occluded transcatheter arterial chemoembolization (B-TACE) for the treatment of HCC refractory to conventional TACE (C-TACE). METHODS:This single-center retrospective analysis included 60 consecutive patients who underwent B-TACE (mean age, 61.4 years; male:fem...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-06911-9
更新日期:2020-10-01 00:00:00
abstract:PURPOSE:This study compared 68Gallium-prostate-specific-membrane-antigen based Positron-emission-tomography (68Ga-PSMA-PET) and 99metastabletechnetium-3,3-diphospho-1,2-propanedicarbonacid (99mTc-DPD-SPECT) in performing skeletal staging in prostate cancer (PC) patients and evaluated the additional value of the informa...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-4994-6
更新日期:2018-02-01 00:00:00
abstract::This pictorial review illustrates the anatomical features of normal intra-articular components of the hip and their common disorders on MR arthrography. On T1-weighted MR arthrograms, the normal contrast-filled joint cavity shows a homogeneous high signal intensity. Normal acetabular labrum appears as a well-delineate...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s003300050009
更新日期:2000-01-01 00:00:00
abstract:PURPOSE:to prospectively compare two rectal filling techniques for dynamic MRI of pelvic floor disorders (PFD). METHODS AND MATERIALS:Twenty-six patients with PFD underwent the two techniques during the same procedure, one based on rectal placement of a balloon-catheter filled with saline and air insufflation (air-bal...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-015-4016-5
更新日期:2016-06-01 00:00:00
abstract:OBJECTIVES:To evaluate the feasibility of T1w-3D black-blood turbo spin echo (TSE) sequence with variable flip angles for the diagnosis of thoracic large vessel vasculitis (LVV). METHODS:Thirty-five patients with LVV, diagnosed according to the current standard of reference, and 35 controls were imaged at 3.0T using 1...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4525-x
更新日期:2017-05-01 00:00:00
abstract::The original version of this article, originally published online ahead of printing on January 05, 2018, unfortunately contained mistakes. ...
journal_title:European radiology
pub_type: 杂志文章,已发布勘误
doi:10.1007/s00330-018-5471-6
更新日期:2018-10-01 00:00:00
abstract::The purpose of this study was to describe and characterize the MR imaging findings in a group of patients who underwent surgery for adhesive capsulitis. Twenty-four MR imaging studies in 24 consecutive patients with clinical evidence of adhesive capsulitis were performed prior to arthroscopic capsulotomy. There were 1...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-002-1349-7
更新日期:2002-08-01 00:00:00