Abstract:
:Our purpose was to assess the effect of computer-aided detection (CAD) on lesion detection as a second reader in computed tomographic colonography, and to compare the influence of CAD on the performance of readers with different levels of expertise. Fifty-two CT colonography patient data-sets (37 patients: 55 endoscopically confirmed polyps > or =0.5 cm, seven cancers; 15 patients: no abnormalities) were retrospectively reviewed by four radiologists (two expert, two nonexpert). After primary data evaluation, a second reading augmented with findings of CAD (polyp-enhanced view, Siemens) was performed. Sensitivities and reading time were calculated for each reader without CAD and supported by CAD findings. The sensitivity of expert readers was 91% each, and of nonexpert readers, 76% and 75%, respectively, for polyp detection. CAD increased the sensitivity of expert readers to 96% (P = 0.25) and 93% (P = 1), and that of nonexpert readers to 91% (P = 0.008) and 95% (P = 0.001), respectively. All four readers diagnosed 100% of cancers, but CAD alone only 43%. CAD increased reading time by 2.1 min (mean). CAD as a second reader significantly improves sensitivity for polyp detection in a high disease prevalence population for nonexpert readers. CAD causes a modest increase in reading time. CAD is of limited value in the detection of cancer.
journal_name
Eur Radioljournal_title
European radiologyauthors
Mang T,Peloschek P,Plank C,Maier A,Graser A,Weber M,Herold C,Bogoni L,Schima Wdoi
10.1007/s00330-007-0608-zsubject
Has Abstractpub_date
2007-10-01 00:00:00pages
2598-607issue
10eissn
0938-7994issn
1432-1084journal_volume
17pub_type
杂志文章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::The purpose of this study was to explain radiographic features of giant cell tumors of the tendon sheath (GCTTS), in particular, osseous extension, by correlating imaging findings with histology in order to increase the accuracy of radiological diagnosis. In a series of 200 consecutive osseous (pseudo) tumors of the h...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0320-4
更新日期:2007-02-01 00:00:00
abstract::Whole-body MRI (WB-MRI) has been successfully applied for oncologic and cardiovascular diagnostics, whereas imaging in myopathies usually employs dedicated protocols restricted to areas of specific interest. In this study, we propose a comprehensive neuromuscular WB-MRI protocol. Eighteen patients with degenerative an...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-008-1071-1
更新日期:2008-12-01 00:00:00
abstract::We report a case of active bleeding of a secondary aortoenteric fistula (SAEF), in which CT angiography with multi-detector-row CT (MDCT) was finally diagnostic after negative catheter angiography and unsatisfactory endoscopy. The MDCT angiography clearly demonstrated the fistulous tract between the abdominal aortic g...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-002-1534-8
更新日期:2002-12-01 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:OBJECTIVE:The purpose of study was to develop a computer-simulated liver phantom for hepatic CT studies. A computer-simulated liver phantom was mathematically constructed on a computer workstation. MATERIALS AND METHODS:The computer-simulated phantom was calibrated using real CT images acquired by an actual four-detec...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-005-0012-5
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVES:To evaluate the changes in mammographic density after tamoxifen discontinuation in premenopausal women with oestrogen receptor-positive breast cancers and the underlying factors METHODS: A total of 213 consecutive premenopausal women with breast cancer who received tamoxifen treatment after curative surgery ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-5293-y
更新日期:2018-08-01 00:00:00
abstract::We describe a rare case of a primitive neuroectodermal tumor (PNET) originating in the lung of a 28-year-old woman. A lung mass was detected incidentally on a chest radiograph taken before a Caesarian delivery. The chest P-A view showed a well-defined, lobulated mass in the right lower lobe with a small pleural effusi...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0216-3
更新日期:2006-09-01 00:00:00
abstract::Ultrasonography (US) is the most commonly used liver imaging modality worldwide. Unfortunately, it has limited sensitivity in the detection of small tumor nodules. Moreover, US findings are often nonspecific, as appearances of benign and malignant liver lesions overlap. The introduction of microbubble contrast agents ...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s10406-007-0231-8
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVES:The goal of the present study was to classify the most common types of plain radiographs using a neural network and to validate the network's performance on internal and external data. Such a network could help improve various radiological workflows. METHODS:All radiographs from the year 2017 (n = 71,274) a...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07241-6
更新日期:2020-09-28 00:00:00
abstract:OBJECTIVES:To assess whether diffusion-weighted magnetic resonance imaging (DW-MRI) including bi-exponential fitting helps to detect residual/recurrent tumours after (chemo)radiotherapy of laryngeal and hypopharyngeal carcinoma. METHODS:Forty-six patients with newly-developed/worsening symptoms after (chemo)radiothera...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2596-x
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVES:Endovascular embolization is a valid option for the management of visceral artery aneurysms. Imaging is crucial for providing anatomical assessments, but preoperative non-invasive investigations may not be exhaustive. The aim of this work is to present preliminary experience with the use of three-dimensional...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-015-3820-2
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVES:The halo sign refers to a zone of ground-glass attenuation surrounding a pulmonary nodule. Pulmonary metastatic nodules exhibiting a halo sign are seen mainly in hypervascular tumours. We describe the appearance of a halo sign following treatment of adoptive transfer of autologous tumour-infiltrating lymphoc...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3129-6
更新日期:2014-06-01 00:00:00
abstract:OBJECTIVES:To evaluate whether quantitative susceptibility mapping (QSM) can be employed to detect abnormalities within normal-appearing basal ganglia on conventional MRI in patients with neuropsychiatric systemic lupus erythematosus (NPSLE). METHODS:For 33 SLE patients (13 NPSLE and 20 non-NPSLE patients) and 23 age/...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-015-3929-3
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVES:Opportunistic screening for osteoporosis using computed tomography (CT) examinations that happen to visualise the spine can be used to identify patients with osteoporosis. We sought to verify the diagnostic performance of vertebral Hounsfield unit (HU) measurements on routine CT examinations for diagnosing o...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3584-0
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:This study was conducted in order to establish the joint Society of Abdominal Radiology (SAR) and European Society of Urogenital Radiology (ESUR) guidelines on placenta accreta spectrum (PAS) disorders and propose strategies to standardize image acquisition, interpretation, and reporting for this condition w...
journal_title:European radiology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00330-019-06617-7
更新日期:2020-05-01 00:00:00
abstract::We retrospectively evaluated the effect, timing and safety of different pharmacological strategies during 64-slice CT coronary angiography (CT-CA). From the institutional database of CT-CAwe enrolled 560 consecutive patients with suspected coronary artery disease. The type of drug preparation (group 1 = no treatment; ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-009-1509-0
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:Hypersensitivity pneumonitis (HP) has a variable clinical course. Modelling of quantitative CALIPER-derived CT data can identify distinct disease phenotypes. Mortality prediction using CALIPER analysis was compared to the interstitial lung disease gender, age, physiology (ILD-GAP) outcome model. METHODS:CAL...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4697-4
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVES:This systematic review examines the agreement between assessed skeletal age by the Greulich and Pyle atlas (GP skeletal age) and chronological age. METHODS:We searched electronic databases until January 2017 for studies reporting GP skeletal age and confirmed chronological age in healthy individuals aged 10...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5718-2
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVES:To compare videofluoroscopy that included a tablet test with impedance planimetry (EndoFLIP®) for the evaluation of oesophageal stenosis in patients with dysphagia. METHODS:In 56 patients, videofluoroscopic examinations following the transit of a 14-mm tablet were retrospectively reviewed and correlated wit...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4516-y
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVES:The degree and status of white matter myelination can be sensitively monitored using diffusion tensor imaging (DTI). This study looks at the measurement of fractional anistropy (FA) and mean diffusivity (MD) using an automated ROI with an existing DTI atlas. METHODS:Anatomical MRI and structural DTI were pe...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2396-3
更新日期:2012-07-01 00:00:00
abstract:OBJECTIVE:To investigate the feasibility and clinical efficacy of ultrasound (US)-guided diffused optical tomography (DOT) in differentiating malignant breast lesions from benign lesions. MATERIAL AND METHODS:From October 2007 to August 2008, 198 women with 214 lesions scheduled for open biopsy were included in this s...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-009-1551-y
更新日期:2010-02-01 00:00:00
abstract::Magnetic resonance imaging (MRI) can simultaneously detect and quantify myocardial dysfunction and shrinkage in contrast-enhanced areas postinfarction. This ability permits the investigation of our hypothesis that transformation of infracted myocardium to scarred tissue imposes additional burdens on peri-infarcted and...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-005-0052-x
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVES:This study was conducted in order to evaluate whether enhancement types on preoperative MRI can reflect prognostic factors and surgical outcomes in invasive breast cancer. METHODS:Among 484 consecutive patients who underwent preoperative breast MRI from October 2014 to July 2017 for biopsy-proven breast can...
journal_title:European radiology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00330-019-06236-2
更新日期:2019-12-01 00:00:00
abstract::Both multislice computed tomography (CT) and magnetic resonance imaging (MRI) are emerging as methods to detect coronary artery stenoses and assess cardiac function and morphology. Non-cardiac structures are also amenable to assessment by these non-invasive tests. We investigated the rate of significant and insignific...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0570-1
更新日期:2007-08-01 00:00:00
abstract::One of the recognised complications of catheter ablation is pulmonary venous stenosis. The aim of this study was to compare two methods of evaluation of pulmonary venous diameter for follow-up assessment of the above complication: (1) a linear approach evaluating two main diameters of the vein, (2) semiautomatically m...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0358-3
更新日期:2006-12-01 00:00:00
abstract:OBJECTIVE:To evaluate the delayed effects of irreversible electroporation (IRE) ablation on nerves. METHODS:The study was approved by the institutional animal care and use committee. CT-guided IRE-ablation (electric field per distance, 1,500 V/cm; pulse length, 70 μs; number of pulses, 90) of 6 sciatic nerves was perf...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2610-3
更新日期:2013-02-01 00:00:00
abstract::The aim of this study was to compare the performance of CT and MRI in the diagnosis of longitudinal stress fracture of the tibia (LSFT). A retrospective study of imaging findings was performed in 15 patients with LSFT. The CT and MR images were compared for detection of fracture line, callus, bone marrow edema, and so...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050442
更新日期:1998-01-01 00:00:00
abstract::The gamekeeper's or skier's thumb is a very common injury. Nondisplaced tears of the ulnar collateral ligament of the thumb (UCL) may be treated conservatively. For that reason an accurate diagnosis is mandatory for choosing the correct therapy. Ultrasound is able to depict the position of the torn UCL correctly in ap...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050111
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVES:We aimed to determine the frequency of isoattenuating insulinomas, to investigate their clinicopathological features and to assess their regional pancreatic perfusion characteristics. METHODS:Institutional review board approval was obtained, and patient informed consent was waived. From July 2010 to June 20...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4216-7
更新日期:2016-10-01 00:00:00