Abstract:
OBJECTIVE:To evaluate the feasibility, image quality, and radiation dose of automatic spectral imaging protocol selection (ASIS) and adaptive statistical iterative reconstruction (ASIR) with reduced contrast agent dose in abdominal multiphase CT. METHODS:One hundred and sixty patients were randomly divided into two scan protocols (n = 80 each; protocol A, 120 kVp/450 mgI/kg, filtered back projection algorithm (FBP); protocol B, spectral CT imaging with ASIS and 40 to 70 keV monochromatic images generated per 300 mgI/kg, ASIR algorithm. Quantitative parameters (image noise and contrast-to-noise ratios [CNRs]) and qualitative visual parameters (image noise, small structures, organ enhancement, and overall image quality) were compared. RESULTS:Monochromatic images at 50 keV and 60 keV provided similar or lower image noise, but higher contrast and overall image quality as compared with 120-kVp images. Despite the higher image noise, 40-keV images showed similar overall image quality compared to 120-kVp images. Radiation dose did not differ between the two protocols, while contrast agent dose in protocol B was reduced by 33 %. CONCLUSION:Application of ASIR and ASIS to monochromatic imaging from 40 to 60 keV allowed contrast agent dose reduction with adequate image quality and without increasing radiation dose compared to 120 kVp with FBP. KEY POINTS:• Automatic spectral imaging protocol selection provides appropriate scan protocols. • Abdominal CT is feasible using spectral imaging and 300 mgI/kg contrast agent. • 50-keV monochromatic images with 50 % ASIR provide optimal image quality.
journal_name
Eur Radioljournal_title
European radiologyauthors
Lv P,Liu J,Chai Y,Yan X,Gao J,Dong Jdoi
10.1007/s00330-016-4349-8subject
Has Abstractpub_date
2017-01-01 00:00:00pages
374-383issue
1eissn
0938-7994issn
1432-1084pii
10.1007/s00330-016-4349-8journal_volume
27pub_type
杂志文章abstract:OBJECTIVES:To evaluate factors associated with increased fluoroscopy time or the need for complex techniques at IVC filter retrieval. METHODS:This is a single-institution retrospective cohort study of 187 consecutive patients who underwent IVC filter retrieval. An analysis was performed on associations of patient fact...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5766-7
更新日期:2019-04-01 00:00:00
abstract::Rapid clinical dissemination of CT colonography (CTC) is occurring in parallel with continued research into technique optimisation and diagnostic performance. A need exists therefore for current guidance as to basic prerequisites for effective clinical implementation. A questionnaire detailing CTC technique, analysis,...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0407-y
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVES:To describe the pathological appearance of the anterolateral ligament (ALL) on US and MRI in knees with an anterior cruciate ligament (ACL) tear. METHODS:This prospective study included 30 patients who had a suspected acute ACL tear. Their injured and contralateral knees were evaluated with radiography, US ...
journal_title:European radiology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00330-017-4955-0
更新日期:2018-01-01 00:00:00
abstract::To assess the immediate efficacy of percutaneous vertebroplasty (PVP) in relief of pain and improving mobility of patients with vertebral compression fractures (VCF) secondary to osteoporosis, 205 cases (175 patients) underwent 250 percutaneous injections of polymethylmethacrylate (PMMA; unilateral, 247 levels; bilate...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-004-2549-0
更新日期:2005-02-01 00:00:00
abstract::The prevalence of benign focal liver lesions (BFLL) is high both in the general population and in patients with known malignancies. The gray-scale ultrasound (US) technique is usually the first-line imaging modality used in the radiological workup of such lesions, but unfortunately it lacks specificity. Furthermore, D...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-005-2668-2
更新日期:2005-08-01 00:00:00
abstract::The original version of this article, published on 01 August 2018, unfortunately contained two mistakes. ...
journal_title:European radiology
pub_type: 杂志文章,已发布勘误
doi:10.1007/s00330-018-5713-7
更新日期:2019-03-01 00:00:00
abstract::Lymphoma is a spectrum of malignant neoplasms of the lymphoid system. The appearances radiologically are diverse with almost all organs susceptible to involvement. The condition is challenging as it can mimic the appearance of almost all other neoplasms. This review highlights in a general way the diversity of the rad...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s00330-002-1632-7
更新日期:2003-05-01 00:00:00
abstract:OBJECTIVES:To report the frequencies of potentially relevant incidental findings in the general adult population and to develop a protocol for their management in whole-body magnetic resonance imaging (wb-MRI). METHODS:A total of 2,500 adult subjects (1,271 women, 1,229 men; mean age 53 years) from the population-base...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2636-6
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the feasibility of whole-body diffusion-weighted MRI (WB-DWI/MRI) for detecting primary tumour, nodal and distant metastases in pregnant women with cancer. METHODS:Twenty pregnant patients underwent WB-DWI/MRI in additional to conventional imaging. Reproducibility of WB-DWI/MRI between two reade...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-5126-z
更新日期:2018-05-01 00:00:00
abstract::Mammography is a branch of radiology which could benefit greatly from the assimilation of digital imaging technologies. Computerized enhancement techniques could be used to ensure optimum presentation of all clinical images. Beyond this it will facilitate powerful new clinical resources such as computer-assisted diagn...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s003300050228
更新日期:1997-01-01 00:00:00
abstract::Five testicular appendages are formed during development of the male genito-urinary tract, which are the remnants of the degenerating mesonephric and paramesonephric ducts. The testicular and epididymal appendages, found at the upper pole of the testis and at the head of the epididymis respectively, are the most commo...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-002-1387-1
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To assess feasibility and image quality (IQ) of a new post-processing algorithm for retrospective extraction of an optimised multi-phase CT (time-resolved CT) of the liver from volumetric perfusion imaging. METHODS:Sixteen patients underwent clinically indicated perfusion CT using 4D spiral mode of dual-sour...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-013-2992-x
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:To investigate the morphological classification of intraductal papillary neoplasm of the bile duct (IPNB), as well as morphological differences between IPNB without mucin secretion (IPNB-NM) and IPNB with mucin secretion (IPMN-B). METHODS:Eighty-one patients with IPNB were retrospectively analysed. Imaging ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-5123-2
更新日期:2018-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the feasibility of dual-energy CT (DECT) ventilation imaging in combination with DE perfusion mapping for a comprehensive assessment of ventilation, perfusion, morphology and structure of the pulmonary parenchyma. METHODS:Two dual-energy CT acquisitions for xenon-enhanced ventilation and iodine-e...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-010-1866-8
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVES:To study the effect of inspiration on airway dimensions measured in voluntary inspiration breath-hold examinations. METHODS:961 subjects with normal spirometry were selected from the Danish Lung Cancer Screening Trial. Subjects were examined annually for five years with low-dose CT. Automated software was u...
journal_title:European radiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s00330-014-3261-3
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:To develop and validate a volume-based, quantitative imaging marker by integrating multi-parametric MR images for predicting glioblastoma survival, and to investigate its relationship and synergy with molecular characteristics. METHODS:We retrospectively analysed 108 patients with primary glioblastoma. The d...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-4751-x
更新日期:2017-09-01 00:00:00
abstract::The aim of this study was to compare MR imaging and endoscopic ultrasonography (EUS) for the local staging of rectal tumours. Forty-nine patients were examined on a 1.5-T MR unit using either a pelvic phased-array coil (n = 37) alone or combined with an endorectal coil (n = 12). Sagittal and axial sequences with T2-we...
journal_title:European radiology
pub_type: 临床试验,杂志文章
doi:10.1007/s003300050979
更新日期:2000-01-01 00:00:00
abstract::The lower the heart rate the better image quality in multislice computed tomography (MSCT) coronary angiography. We prospectively assessed the influence of heart rate on per-patient diagnostic accuracy and image quality of MSCT coronary angiography and compared adaptive multisegment and standard halfscan reconstructio...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-007-0685-z
更新日期:2007-11-01 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:OBJECTIVES:T2*-weighted (T2*w) is deemed as a reference standard for post-infarction intramyocardial haemorrhage (IMH). However, high proportion of T2* images is affected by off-resonance artefacts hampering image interpretation. Diagnostic accuracy and precision of alternative techniques for IMH diagnosis and quantifi...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07254-1
更新日期:2020-09-14 00:00:00
abstract:OBJECTIVES:Left ventricular mass (LVM) at cardiac magnetic resonance imaging (CMR) is a frequent end point in clinical trials in nephrology. Trial participants with end stage renal disease (ESRD) may have a greater frequency of incidental findings (IF). We retrospectively investigated prevalence of IF in previous resea...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4288-4
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVES:To assess whether increases in amide proton transfer (APT)-weighted signal reflect the effects of tissue recovery from acidosis using transient rat middle cerebral artery occlusion (MCAO) models, compared to permanent occlusion models. MATERIALS AND METHODS:Twenty-four rats with MCAO (17 transient and seven...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5964-3
更新日期:2019-08-01 00:00:00
abstract:OBJECTIVES:To investigate the impact of mesorectal fat area (MFA) on oncologic outcomes in patients with mid-to-lower rectal cancer who received curative-intent surgery. METHODS:Patients with mid-to-lower rectal cancer who underwent preoperative abdominopelvic computed tomography (CT) and curative-intent surgery in 20...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5723-5
更新日期:2019-03-01 00:00:00
abstract::Facial injuries are common and require radiologic evaluation to plan treatment. The role of imaging is to detect fractures, describe their morphology and topography, and evaluate adjacent soft tissue damage. Computed tomography is the imaging method of choice for an accurate diagnosis and for depicting the complex ana...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s00330-002-1445-8
更新日期:2002-06-01 00:00:00
abstract:OBJECTIVES:To compare the diagnostic accuracy and sensitivity of Gd-EOB-DTPA MRI and diffusion-weighted (DWI) imaging alone and in combination for detecting colorectal liver metastases in patients who had undergone preoperative chemotherapy. METHODS:Thirty-two consecutive patients with a total of 166 liver lesions wer...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2658-0
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of hybrid iterative reconstruction on qualitative and quantitative parameters at 256-slice cardiac CT. METHODS:Prospective cardiac CT images from 20 patients were analysed. Paired image sets were created using 3 reconstructions, i.e. filtered back projection (FBP) and moderate- and hi...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-011-2361-6
更新日期:2012-06-01 00:00:00
abstract::The imaging findings that ultrasonographically differentiate focal acute pancreatitis (FAP) from a malignant lesion of the pancreas are described. Focal acute pancreatitis is ultrasonographically (US) characterized as a hypoechoic, homogeneous, localized, subsegmental, non-expansive and diffusely demarcated lesion loc...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050756
更新日期:1999-01-01 00:00:00
abstract::Contrast-enhanced MRI (CE-MRI) of the breast has been investigated for over 10 years. The reports of sensitivity for cancer detection have generally been greater than 90 %. However, estimates of specificity have varied greatly. Differing results are due to differences in study populations, technical methods and criter...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/pl00006909
更新日期:1997-01-01 00:00:00
abstract::The role of diffusion-weighted magnetic resonance imaging (DWI) to differentiate breast lesions in vivo was evaluated. Sixty women (mean age, 53 years) with 81 breast lesions were enrolled. A coronal echo planar imaging (EPI) sequence sensitised to diffusion (b value=1,000 s/mm(2)) was added to standard MR. The mean d...
journal_title:European radiology
pub_type: 临床试验,杂志文章
doi:10.1007/s00330-007-0621-2
更新日期:2007-10-01 00:00:00
abstract::The aim of this study was to evaluate the value of automatic bolus tracking for monophasic spiral CT of the liver and to assess the liver-to-lesion conspicuity in comparison with time-delay examinations. In 40 patients scheduled for therapy control of known hypovascular hepatic metastases a monophasic spiral CT was co...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300000637
更新日期:2001-01-01 00:00:00