Category Archives: Radiology

Optimum Management of Pulmonary Nodules.

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Optimum Management of Pulmonary Nodules.
Radiology. 2017 Jun;283(3):917-919
Authors: de Koning HJ, Oudkerk M, Lammers JJ
PMID: 28514222 [PubMed – in process]

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Reporting Diagnostic Accuracy Studies: Some Improvements after 10 Years of STARD.

Reporting Diagnostic Accuracy Studies: Some Improvements after 10 Years of STARD.

Radiology. 2014 Oct 27;:141160

Authors: Korevaar DA, Wang J, van Enst WA, Leeflang MM, Hooft L, Smidt N, Bossuyt PM

Abstract
Purpose To evaluate how diagnostic accuracy study reports published in 2012 adhered to the Standards for Reporting of Diagnostic Accuracy ( STARD Standards for Reporting of Diagnostic Accuracy ) statement and whether there were any differences in reporting compared with 2000 and 2004. Materials and Methods PubMed was searched for studies published in 12 high-impact-factor journals in 2012 that evaluated the accuracy of one or more diagnostic tests against a clinical reference standard. Two independent reviewers scored reporting completeness of each article with the 25-item STARD Standards for Reporting of Diagnostic Accuracy checklist. Mixed-effects modeling was used to analyze differences in reporting with previous evaluations from articles published in 2000 and 2004. Results Included were 112 articles. The overall mean number of STARD Standards for Reporting of Diagnostic Accuracy items reported in 2012 was 15.3 ± 3.9 (standard deviation; range, 6.0-23.5). There was an improvement of 3.4 items (95% confidence interval: 2.6, 4.3) compared with studies published in 2000, and an improvement of 1.7 items (95% confidence interval: 0.9, 2.5) compared with studies published in 2004. Significantly more items were reported for single-gate studies compared with multiple-gate studies (16.8 vs 12.1, respectively; P < .001) and for studies that evaluated imaging tests compared with laboratory tests and other types of tests (17.0 vs 14.0 vs 14.5, respectively; P < .001). Conclusion Completeness of reporting improved in the 10 years after the launch of STARD Standards for Reporting of Diagnostic Accuracy , but it remains suboptimal for many articles. Reporting of inclusion criteria and sampling methods for recruiting patients, information about blinding, and confidence intervals for accuracy estimates are in need of further improvement. © RSNA, 2014 Online supplemental material is available for this article.

PMID: 25350641 [PubMed – as supplied by publisher]

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Cell therapy in reperfused acute myocardial infarction does not improve the recovery of perfusion in the infarcted myocardium: a cardiac MR imaging study.

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Cell therapy in reperfused acute myocardial infarction does not improve the recovery of perfusion in the infarcted myocardium: a cardiac MR imaging study.
Radiology. 2014 Jul;272(1):113-22
Authors: Ro… Continue reading

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Coronary Artery Calcification Scoring with State-of-the-Art CT Scanners from Different Vendors Has Substantial Effect on Risk Classification.

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Coronary Artery Calcification Scoring with State-of-the-Art CT Scanners from Different Vendors Has Substantial Effect on Risk Classification.

Radiology….

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Closing in on the K Edge: Coronary CT Angiography at 100, 80, and 70 kV-Initial Comparison of a Second- versus a Third-Generation Dual-Source CT System.

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Closing in on the K Edge: Coronary CT Angiography at 100, 80, and 70 kV-Initial Comparison of a Second- versus a Third-Generation Dual-Source CT System.

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Features of resolving and nonresolving indeterminate pulmonary nodules at follow-up CT: the NELSON study.

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Features of resolving and nonresolving indeterminate pulmonary nodules at follow-up CT: the NELSON study.
Radiology. 2014 Mar;270(3):872-9
Authors: Zhao YR, Heuvelmans MA, Dorrius MD, van Ooijen PM, W… Continue reading

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Iterative image reconstruction techniques for CT coronary artery calcium quantification: comparison with traditional filtered back projection in vitro and in vivo.

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Iterative image reconstruction techniques for CT coronary artery calcium quantification: comparison with traditional filtered back projection in vitro and in vivo.

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Exercise and type 2 diabetes mellitus: changes in tissue-specific fat distribution and cardiac function.

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Exercise and type 2 diabetes mellitus: changes in tissue-specific fat distribution and cardiac function.

Radiology. 2013 Nov;269(2):434-42

Authors: Jonker…

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Influence of the choice of software package on the outcome of semiquantitative MR myocardial perfusion analysis.

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Influence of the choice of software package on the outcome of semiquantitative MR myocardial perfusion analysis.

Radiology. 2013 Mar;266(3):759-65

Authors: Handayani A, Sijens PE, Lubbers DD, Triadyaksa P, Oudkerk M, van Ooijen PM

Abstract
PURPOSE: To assess the repeatability and reproducibility of semiquantitative magnetic resonance (MR) perfusion analysis performed by using different software packages.
MATERIALS AND METHODS: The study protocol was approved by the institutional ethics committee. Informed consent was obtained from each patient. Semiquantitative perfusion analysis was performed twice by two independent observers using four dedicated software packages. MR perfusion datasets originated from eight patients with known single-vessel disease who were scheduled for percutaneous coronary intervention (PCI) on the basis of coronary angiography findings. Each patient underwent two examinations: 1 day before and 1 day after PCI. Repeatability (intra- and interobserver agreements) and reproducibility (intersoftware agreement) were evaluated for perfusion upslope and myocardial perfusion reserve index with Student t test and Bland-Altman analyses.
RESULTS: Intra- and interobserver agreements were good and comparable for repeated measurements within each individual software platform (mean differences < 6%, intraclass correlation coefficient [ICC] ≥ 0.68). However, the intersoftware variability was significant (limits of agreement ≥ 65%, ICC ≤ 0.67) such that the values produced with the different software packages are not interchangeable.
CONCLUSION: The results indicate high repeatability within individual software but low reproducibility between different software packages, suggesting that within-group and/or sequential observation of semiquantitative perfusion parameters must be performed with the same software platform. Before semiquantitative perfusion analysis can be incorporated reliably into clinical studies, it is important to resolve the differences between the software packages.

PMID: 23238157 [PubMed – indexed for MEDLINE]

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PET/MR Imaging: Technical Aspects and Potential Clinical Applications.

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PET/MR Imaging: Technical Aspects and Potential Clinical Applications.

Radiology. 2013 Apr;267(1):26-44

Authors: Torigian DA, Zaidi H, Kwee TC, Saboury B,…

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Sequential MR imaging of denervated and reinnervated skeletal muscle as correlated to functional outcome.

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Sequential MR imaging of denervated and reinnervated skeletal muscle as correlated to functional outcome.
Radiology. 2012 Aug;264(2):522-30
Authors: Viddeleer AR, Sijens PE, van Ooyen PM, Kuypers PD, Hovius SE… Continue reading

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Coronary CT Angiography versus Conventional Cardiac Angiography for Therapeutic Decision Making in Patients with High Likelihood of Coronary Artery Disease.

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Coronary CT Angiography versus Conventional Cardiac Angiography for Therapeutic Decision Making in Patients with High Likelihood of Coronary Artery Disease.

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No Benefit for Consensus Double Reading at Baseline Screening for Lung Cancer with the Use of Semiautomated Volumetry Software.

No Benefit for Consensus Double Reading at Baseline Screening for Lung Cancer with the Use of Semiautomated Volumetry Software.

Radiology. 2011 Nov 21;

Authors: Wang Y, van…

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Determination of choline concentration in breast lesions: quantitative multivoxel proton MR spectroscopy as a promising noninvasive assessment tool to exclude benign lesions.

Determination of choline concentration in breast lesions: quantitative multivoxel proton MR spectroscopy as a promising noninvasive assessment tool to exclude benign lesions.
Radiology. 2011 Jun;259(3):695-703
Authors: Dorrius… Continue reading

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Symptomatic uterine fibroids: treatment with uterine artery embolization or hysterectomy–results from the randomized clinical Embolisation versus Hysterectomy (EMMY) Trial.

Symptomatic uterine fibroids: treatment with uterine artery embolization or hysterectomy–results from the randomized clinical Embolisation versus Hysterectomy (EMMY) Trial.
Radiology. 2008 Mar;246(3):823-32
Authors: Hehenkamp… Continue reading

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