Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2341
Title: 3-D measurement of body tissues based on ultrasound images with 3-D spatial information
Authors: Huang, Qing-Hua
Zheng, Yong-Ping
Li, Robert
Lu, Min-Hua
Subjects: 3-D ultrasound
Ultrasound
MRI
3-D measurement
Musculoskeletal body parts
Issue Date: Dec-2005
Publisher: Elsevier for the World Federation for Ultrasound in Medicine and Biology
Source: Ultrasound in medicine and biology, Dec. 2005, v. 31, no. 12, p. 1607-1615.
Abstract: In this study, we developed a new method to perform 3-D measurements between the recorded B-scans using the corresponding spatial location and orientation of each B-scan, without the need to create a 3-D volume. A portable ultrasound (US) scanner and an electromagnetic spatial locator attached to the US probe were used. During data collection, the US probe was moved over the region-of-interest. A small number of B-scans containing interesting anatomical information were captured from different body parts and displayed in a 3-D space with their corresponding locations recorded by the spatial locator. In the B-scan planes, the distance between any two points, as well as the angle between any two lines, could be calculated. In validation experiments, three distances and three angles of a custom-designed phantom were measured using this method. In comparison with the results measured by a micrometer, the mean error of distance measurement was −0.8 ± 1.7 mm (−2.3 ± 3.6%) and that of angle measurement was −0.3 ± 2.9° (−0.1 ± 4.1%). The lengths of the first metatarsals and the angles between the first metatarsals and the middle part of the tibias of three subjects were measured in vivo using magnetic resonance imaging (MRI) and the US method by two operators before and after MRI scanning. The overall percentage differences of the length and angle measurements were 0.8 ± 2.2% and 2.5 ± 3.6%, respectively. The results showed that this US method had good repeatability and reproducibility (interclass correlation coefficient values > 0.75). We expect that this new method could potentially provide a quick and effective approach for the 3-D measurement of soft tissues and bones in the musculoskeletal system.
Rights: Ultrasound in Medicine and Biology © 2005 World Federation for Ultrasound in Medicine & Biology. The journal web site is located at http://www.sciencedirect.com.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/2341
DOI: 10.1016/j.ultrasmedbio.2005.08.004
ISSN: 0301-5629
Appears in Collections:HTI Journal/Magazine Articles

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