Abstract:
PURPOSE:To evaluate the influence of radiation dose settings and reconstruction algorithms on the measurement accuracy and reproducibility of semi-automated pulmonary nodule volumetry. MATERIALS AND METHODS:CT scans were performed on a chest phantom containing various nodules (10 and 12mm; +100, -630 and -800HU) at 120kVp with tube current-time settings of 10, 20, 50, and 100mAs. Each CT was reconstructed using filtered back projection (FBP), iDose(4) and iterative model reconstruction (IMR). Semi-automated volumetry was performed by two radiologists using commercial volumetry software for nodules at each CT dataset. Noise, contrast-to-noise ratio and signal-to-noise ratio of CT images were also obtained. The absolute percentage measurement errors and differences were then calculated for volume and mass. The influence of radiation dose and reconstruction algorithm on measurement accuracy, reproducibility and objective image quality metrics was analyzed using generalized estimating equations. RESULTS:Measurement accuracy and reproducibility of nodule volume and mass were not significantly associated with CT radiation dose settings or reconstruction algorithms (p>0.05). Objective image quality metrics of CT images were superior in IMR than in FBP or iDose(4) at all radiation dose settings (p<0.05). CONCLUSION:Semi-automated nodule volumetry can be applied to low- or ultralow-dose chest CT with usage of a novel iterative reconstruction algorithm without losing measurement accuracy and reproducibility.
journal_name
Eur J Radioljournal_title
European journal of radiologyauthors
Kim H,Park CM,Song YS,Lee SM,Goo JMdoi
10.1016/j.ejrad.2014.01.025subject
Has Abstractpub_date
2014-05-01 00:00:00pages
848-57issue
5eissn
0720-048Xissn
1872-7727pii
S0720-048X(14)00061-8journal_volume
83pub_type
杂志文章abstract:OBJECTIVE:To evaluate the magnetic resonance imaging (MRI) findings of 15 patients with perineural tumor extension along the trigeminal nerve in correlation with clinical data. METHODS:The clinical records and MRI studies of 15 patients with perineural tumor extension along the trigeminal nerve were retrospectively re...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(96)01122-9
更新日期:1997-05-01 00:00:00
abstract::Physical exercise and sports increase muscular mass and the remodelling process of bones. The increment of bone depends on the type and the quality of sport. Short-term high-performance activities such as sprint, tennis, fencing lead to increased bone mineral density as well as weight lifting or heavy athletics. Swimm...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(97)00113-7
更新日期:1998-09-01 00:00:00
abstract::Hypogonadism, resulting from iron-induced pituitary dysfunction, is the most frequently reported complication in patients with beta-thalassaemia major. The aim of this study was to evaluate pituitary Magnetic Resonance Imaging (MRI) signal intensity reduction, on T2*-weighted images, as a marker of pituitary iron over...
journal_title:European journal of radiology
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doi:10.1016/j.ejrad.2006.11.016
更新日期:2007-04-01 00:00:00
abstract::Diabetic mastopathy is a recently described collection of radiographical and histological features found in dense fibrous masses of the breast in long standing Type I diabetes. We describe the first case of bilateral disease with the alternate progression and regression of the disease over a 5 year period. A 45-year-o...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/s0720-048x(97)00029-6
更新日期:1998-02-01 00:00:00
abstract::Twenty-eight children with femoral shaft fractures, treated with early spica cast, were evaluated with computed tomography (CT), for their femoral shaft rotational deformities. The femoral torsion angles were measured on both sides. If the torsion angle of the fractured side was more than the other side, it was consid...
journal_title:European journal of radiology
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doi:10.1016/s0720-048x(02)00256-5
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abstract::Spinal injuries may result in severe neurological deficits, especially if nerve roots or even the spinal cord are affected. Besides presenting the important anatomical and technical basis underlying the imaging findings of spinal injuries, the trauma mechanisms and the resulting injuries are discussed. Based on the cu...
journal_title:European journal of radiology
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更新日期:2006-04-01 00:00:00
abstract:PURPOSE:To obtain diffusion and microperfusion measures in lymph node metastases of head and neck squamous cell carcinomas (HNSCC) using intravoxel incoherent motion (IVIM) imaging. The obtained IVIM parameters were used to characterize lymph nodes in the staging phase and longitudinal follow-up was performed to evalua...
journal_title:European journal of radiology
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doi:10.1016/j.ejrad.2014.02.013
更新日期:2014-05-01 00:00:00
abstract:PURPOSE:Investigation of potential improvements in dynamic CT perfusion measurements by exploitation of improved visualization of contrast agent in virtual monoenergetic reconstructions of images acquired with dual-energy computed tomography (DECT). METHOD:For 17 patients with pancreatic carcinoma, dynamic dual-source...
journal_title:European journal of radiology
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更新日期:2020-10-01 00:00:00
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journal_title:European journal of radiology
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更新日期:2017-10-01 00:00:00
abstract::In order to adequately visualize the ossicles and other fine structures in the middle ear, sophisticated radiological methods are essential. The temporal bone has been studied with hypocycloidal tomography using conventional films and xerotomography in 60 patients with cholesteatoma. In 53 of the patients xerotomograp...
journal_title:European journal of radiology
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更新日期:1982-05-01 00:00:00
abstract::Research into the possibilities of AI in cardiac CT has been growing rapidly in the last decade. With the rise of publicly available databases and AI algorithms, many researchers and clinicians have started investigations into the use of AI in the clinical workflow. This review is a comprehensive overview on the types...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
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更新日期:2020-07-01 00:00:00
abstract:PURPOSE:Blunt carotid injuries (BCI's) and blunt vertebral artery injuries (BVI's), known jointly as BCVI's, are common in "high risk" patients. The purpose is to evaluate the rate of occurrence of BCI/BVI in patients screened purely by the radiologic criteria of fracture through the carotid canal or vertebral transver...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2007.01.008
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVE:To assess the efficacy of single, double and triple doses of 1M gadolinium in the magnetic resonance (MR) evaluation of multiple sclerosis (MS) lesions in order to establish the best trade-off in terms of dose and number of injections. MATERIALS AND METHODS:Twenty-three patients with relapsing remitting or s...
journal_title:European journal of radiology
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doi:10.1016/j.ejrad.2005.06.004
更新日期:2006-01-01 00:00:00
abstract:PURPOSE:The clinical adoption of quantitative imaging biomarkers (radiomics) has established the need for high quality contrast-enhancement in medical images. We aimed to develop a machine-learning algorithm for Quality Control of Contrast-Enhancement on CT-scan (CECT-QC). METHOD:Multicenter data from four independent...
journal_title:European journal of radiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ejrad.2020.108850
更新日期:2020-04-01 00:00:00
abstract::Ultrasonography (US) is an established and well-accepted modality that can be used to evaluate articular and peri-articular structures around the shoulder. US has been proven to be useful in a wide range of rotator cuff diseases (tendon tears, tendinosis, and bursitis) as well as non-rotator cuff abnormalities (instab...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
doi:10.1016/j.ejrad.2014.11.007
更新日期:2015-02-01 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
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更新日期:2002-01-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章,多中心研究
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更新日期:2019-02-01 00:00:00
abstract:PURPOSE:To compare the measurement variability for coronary artery calcium (CAC) measurements using mineral mass compared with a modified Agatston score (AS) or volume score (VS) with multi-detector CT (MDCT) scanning, and to estimate the potential impact of these methods on the design of CAC progression studies. MATE...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2005.12.027
更新日期:2006-03-01 00:00:00
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journal_title:European journal of radiology
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doi:
更新日期:1989-08-01 00:00:00
abstract::The purpose of this study was to retrospectively evaluate long-term success of CT-guided radiofrequency ablation (RFA) in patients with osteoid osteoma (OO) and osteoblastoma (OB) including tumors in critical locations. Eighty-one CT-guided RFA procedures were performed in 77 patients with OO (65 patients) and OB (12)...
journal_title:European journal of radiology
pub_type: 临床试验,杂志文章
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更新日期:2018-07-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2007.09.035
更新日期:2008-12-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/0720-048x(94)90089-2
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVE:The aim of our study was to systematically compare different methodologies to establish an evidence-based approach based on tendon thickness and structure for sonographic diagnosis of supraspinatus tendinopathy when compared to MRI. METHODS:US was obtained from 164 symptomatic patients with supraspinatus ten...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2014.02.021
更新日期:2014-06-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2011.02.036
更新日期:2012-05-01 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: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:Apparent Diffusion Coefficient (ADC) measurements are increasingly used for assessing breast cancer response to neoadjuvant chemotherapy although little data exists on ADC measurement reproducibility. The purpose of this work was to investigate and characterise the magnitude of errors in ADC measures that may b...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2015.05.032
更新日期:2015-09-01 00:00:00
abstract:AIM:The objective of this study is to evaluate the efficacy and safety of image-guided percutaneous splenic interventions as diagnostic or therapeutic procedures. MATERIALS AND METHODS:We performed a retrospective review of our interventional records from July 2001 to June 2006. Ninety-five image-guided percutaneous s...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2007.02.011
更新日期:2007-10-01 00:00:00
abstract::The new American Thoracic Society/European Respiratory Society (ATS/ERS) update to the multidisciplinary classification of idiopathic interstitial pneumonias (IIPs) defines both rare IIPs and rare histologic patterns of IIPs. Although these diseases are rare, each has some distinguishing imaging and pathologic charact...
journal_title:European journal of radiology
pub_type: 杂志文章
doi:10.1016/j.ejrad.2014.11.032
更新日期:2015-03-01 00:00:00