AJR. American journal of roentgenology
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AJR Am J Roentgenol · Feb 2010
Multicenter StudyRadiofrequency ablation for the treatment of bone metastases from hepatocellular carcinoma.
The objective of our study was to retrospectively evaluate the clinical utility of bone radiofrequency ablation in patients with bone metastases from hepatocellular carcinoma (HCC). ⋯ Bone radiofrequency ablation is a safe, useful, and feasible therapeutic option for relieving pain in patients with HCC bone metastases. Prognostic factors reported herein can facilitate stratification of patients with HCC bone metastases.
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The purpose of this article is to review the ultrasound characteristics of ovarian and adnexal masses and to discuss the prediction of the likelihood of ovarian cancer based on these characteristics and clinical parameters. ⋯ Ultrasound characteristics can be used to diagnose the classic-appearing nonneoplastic entities, benign neoplasms and malignancies. In cases in which the appearance of an ovarian mass is not classic, assignment of relative risk of malignancy using a multiparametric model is appropriate and beneficial for patient management.
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AJR Am J Roentgenol · Feb 2010
Differentiation of pleural effusions from parenchymal opacities: accuracy of bedside chest radiography.
The purpose of this study was to determine, with CT as the reference standard, the ability of radiologists to detect pleural effusions on bedside chest radiographs. ⋯ Radiologists interpreting bedside chest radiographs of ICU patients detect large pleural effusions 92% of the time and can exclude large effusions with high confidence. However, small and medium effusions often are misdiagnosed as parenchymal opacities (45%) or are not seen (55%). Pulmonary opacities often are missed (34%) but are rarely misdiagnosed as pleural effusions (7%).
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AJR Am J Roentgenol · Feb 2010
Comparative StudyProstate cancer: Comparison of 3D T2-weighted with conventional 2D T2-weighted imaging for image quality and tumor detection.
The purpose of this study was to compare a 3D T2-weighted imaging sequence with a conventional multiplanar 2D turbo spin-echo T2-weighted sequence in terms of tumor detection and staging of prostate cancer, as well as image quality. ⋯ In comparison with conventional multiplanar 2D turbo spin-echo MRI of the prostate, 3D T2-weighted SPACE MRI was associated with substantial time saving (nearly 8 minutes), had similar image quality and accuracy in the diagnosis of tumor and extracapsular extension, and had better tumor conspicuity.
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AJR Am J Roentgenol · Feb 2010
Acute adverse reactions to gadopentetate dimeglumine and gadobenate dimeglumine: experience with 32,659 injections.
The purpose of this study was to retrospectively assess the frequency, manifestations, and severity of acute adverse reactions associated with administration of two gadolinium-based contrast agents to patients who underwent MRI at a single large academic institution. ⋯ The rates of acute adverse reactions to gadopentetate dimeglumine and gadobenate dimeglumine were 0.14% and 0.28%, respectively. The overall adverse reaction rate was 0.16% in our patient sample. Direct comparison of adverse reaction rates of the two agents was not possible because of the retrospective uncontrolled study design.