| Breast ultrasound tomography versus MRI for clinical display of anatomy and tumor rendering: preliminary results. | |
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MedLine Citation:
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PMID: 22194502 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: The objective of our study was to determine the clinical display thresholds of an ultrasound tomography prototype relative to MRI for comparable visualization of breast anatomy and tumor rendering. SUBJECTS AND METHODS: Thirty-six women were imaged with MRI and our ultrasound tomography prototype. The ultrasound tomography scan generated reflection, sound-speed, and attenuation images. The reflection images were fused with the components of the sound-speed and attenuation images that achieved thresholds to represent parenchyma or solid masses using an image arithmetic process. Qualitative and quantitative comparisons of MRI and ultrasound tomography clinical images were used to identify anatomic similarities and optimized thresholds for tumor shapes and volumes. RESULTS: Thresholding techniques generated ultrasound tomography images comparable to MR images for visualizing fibrous stroma, parenchyma, fatty tissues, and tumors. In 25 patients, tumors were cancerous and in 11, benign. Optimized sound-speed thresholds of 1.46 ± 0.1 and 1.52 ± 0.03 km/s were identified to best represent the extent of fibroglandular tissue and solid masses, respectively. An arithmetic combination of attenuation images using a threshold of 0.16 ± 0.04 dB/cm (mean ± SD) further characterized benign from malignant masses. No significant difference in tumor volume was noted between benign or malignant masses by ultrasound tomography or MRI (p > 0.1) using these universal thresholds. CONCLUSION: Ultrasound tomography is able to image and render breast tissues in a manner comparable to MRI. Using universal ultrasound tomography threshold values for rendering the size and distribution of benign and malignant tissues appears feasible without IV contrast material. |
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Authors:
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Bryan Ranger; Peter J Littrup; Nebojsa Duric; Priti Chandiwala-Mody; Cuiping Li; Steven Schmidt; Jessica Lupinacci |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 198 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2011-12-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 233-9 Citation Subset: AIM; IM |
Affiliation:
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Karmanos Cancer Institute, 3990 John R Rd, Harper Professional Bldg, Ste 710, Detroit, MI 48201. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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