improving ct-guided transthoracic biopsy of mediastinal lesions by diffusion-weighted magnetic resonance imaging

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ID: 129106
2014
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Ranked #8 of 128 articles by views in icitacee 2015 - 2nd international conference on information technology, computer, and electrical engineering: green technology strengthening in information technology, electrical and computer engineering implementation, proceedings

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Abstract
OBJECTIVES: To evaluate the preliminary results obtained using diffusion-weighted magnetic resonance imaging and the apparent diffusion coefficient for planning computed tomography-guided biopsies of selected mediastinal lesions. METHODS: Eight patients with mediastinal lesions suspicious for malignancy were referred for computed tomography-guided biopsy. Diffusion-weighted magnetic resonance imaging and apparent diffusion coefficient measurement were performed to assist in biopsy planning with diffusion/computed tomography fused images. We selected mediastinal lesions that could provide discordant diagnoses depending on the biopsy site, including large heterogeneous masses, lesions associated with lung atelectasis or consolidation, lesions involving large mediastinal vessels and lesions for which the results of biopsy using other methods and histopathological examination were divergent from the clinical and radiological suspicion. RESULTS: In all cases, the biopsy needle was successfully directed to areas of higher signal intensity on diffusion-weighted sequences and the lowest apparent diffusion coefficient within the lesion (mean, 0.8 [range, 0.6-1.1]×10-3 mm2/s), suggesting high cellularity. All biopsies provided adequate material for specific histopathological diagnoses of four lymphomas, two sarcomas and two thymomas. CONCLUSION: Functional imaging tools, such as diffusion-weighted imaging and the apparent diffusion coefficient, are promising for implementation in noninvasive and imaging-guided procedures. However, additional studies are needed to confirm that mediastinal biopsy can be improved with these techniques.
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Authors ;Marcos Duarte Guimarães;Bruno Hochhegger;Marcelo Felipe Kuperman Benveniste;Bruno Calazans Odisio;Jefferson Luiz Gross;Charles Edouard Zurstrassen;Chiang Cheng Tyng;Almir Galvão Vieira Bitencourt;Edson Marchiori
Journal icitacee 2015 - 2nd international conference on information technology, computer, and electrical engineering: green technology strengthening in information technology, electrical and computer engineering implementation, proceedings
Year 2014
DOI
10.6061/clinics/2014(11)13
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322014001100787&lng=en&tlng=en
Keywords
diagnosis malignancy tomographymedicine (general)

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