Photorealistic virtual anatomy based on Chinese Visible Human data

Heng, P.A.; Zhang, S.X.; Xie, Yongming; Wong, Tak‐Ming; Chui, Yim Pan; Cheng, Jack C. Y.

doi:10.1002/ca.20314

Cited by 22 publications

(15 citation statements)

References 6 publications

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“…Anatomical atlases contain more images than text and are intensively used to study anatomy. The introduction of computers and the internet made more and different images available to teachers and students, a development that is probably best illustrated by the “visible human” projects (Jastrow and Vollrath,2003; Heng et al,2006; Park et al,2006).…”

Section: Introductionmentioning

confidence: 99%

Do images influence assessment in anatomy? Exploring the effect of images on item difficulty and item discrimination

Vorstenbosch

Klaassen

Kooloos

et al. 2012

Anatomical Sciences Ed

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Anatomists often use images in assessments and examinations. This study aims to investigate the influence of different types of images on item difficulty and item discrimination in written assessments. A total of 210 of 460 students volunteered for an extra assessment in a gross anatomy course. This assessment contained 39 test items grouped in seven themes. The answer format alternated per theme and was either a labeled image or an answer list, resulting in two versions containing both images and answer lists. Subjects were randomly assigned to one version. Answer formats were compared through item scores. Both examinations had similar overall difficulty and reliability. Two cross-sectional images resulted in greater item difficulty and item discrimination, compared to an answer list. A schematic image of fetal circulation led to decreased item difficulty and item discrimination. Three images showed variable effects. These results show that effects on assessment scores are dependent on the type of image used. Results from the two cross-sectional images suggest an extra ability is being tested. Data from a scheme of fetal circulation suggest a cueing effect. Variable effects from other images indicate that a context-dependent interaction takes place with the content of questions. The conclusion is that item difficulty and item discrimination can be affected when images are used instead of answer lists; thus, the use of images as a response format has potential implications for the validity of test items.

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Section: Introductionmentioning

confidence: 99%

Do images influence assessment in anatomy? Exploring the effect of images on item difficulty and item discrimination

Vorstenbosch

Klaassen

Kooloos

et al. 2012

Anatomical Sciences Ed

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show abstract

“…The sectioned images provide the surface models with morphological information, and the surface models are the best choice to explain how the 3D structures look in 2D planes (Fig. 6) (Ackerman, 1999;Jastrow & Vollrath, 2003;Heng et al, 2006;Liu et al, 2013). Second, the surface models can be virtually moved from an anatomist's view point.…”

Section: Discussionmentioning

confidence: 99%

Virtual Movement of the Ankle and Subtalar Joints Using Cadaver Surface Models

Shin

Chung

2015

Int. J. Morphol.

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Virtual movement of the ankle and subtalar joints using cadaver surface models. Int. J. Morphol., 33(3):888-894, 2015. SUMMARY:Medical students in the dissection room do not fully understand the ankle joint for dorsiflexion and plantar flexion as well as the subtalar joint for inversion and eversion. Thus, a three-dimensional simulation of the movements would be beneficial as a complementary pedagogic tool. The bones and five muscles (tibialis anterior, tibialis posterior, fibularis longus, fibularis brevis, and fibularis tertius) of the left ankle and foot were outlined in serially sectioned cadaver images from the Visible Korean project. The outlines were verified and revised; and were stacked to build surface models using Mimics software. Dorsiflexion and plantar flexion were simulated using the models on Maya to determine the mediolateral axis. Then, inversion and eversion were done to determine the anteroposterior axis. The topographic relationship of the two axes with the five affecting muscles was examined to demonstrate correctness. The models were placed in a PDF file, with which users were capable of mixed display of structures. The stereoscopic image data, developed in this investigation, clearly explain ankle movement. These graphic contents, accompanied by the sectioned images, are expected to facilitate the development of simulation for the medical students' learning and the orthopedic surgeons' clinical trial.

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“…The CVH database project was an intersection of life science and information science (Chen et al, 2009). In terms of its continuity, resolution, section thickness, and completeness of data sets, as well as the representativeness of the cadavers, the CVH databases can provide a completely digitalized research platform for various fields related to the human morphology and were used not only in anatomy teaching, but also in medicine and medical instrument (Spitzer et al, 1998; Guo et al, 2005; Heng et al, 2006; Wang 2006; Zhang et al, 2006). Visible human data sets have also been prepared in the United States (Spitzer et al, 1998) and Korea (Chung et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Comparative study of thin sectional anatomical images from Chinese Visible Human data set and computed tomography images of superior mediastinum

Wu¹,

Luo²,

Tan³

et al. 2012

Clinical Anatomy

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The structures of superior mediastinum and their spatial relationships are complex and difficult to master. This study aimed to compare visualization of the superior mediastinum based on computed tomography (CT) images and on the thin sections of the Chinese visible human (CVH) data set to provide a sectional anatomical basis for diagnostic imaging of superior mediastinal pathology. CVH sections of the mediastinum of a 35-year old male were compared with plain and enhanced CT images of a 45-year old male without apparent abnormalities in the upper chest. In addition, a three-dimensional model based on the CVH sections was compared with a model based on CT images. Although CT imaging is noninvasive and can be carried out in many individuals, its weakness is clearly the visualization of small soft tissue structures. In this respect, the sectional anatomical approach of the CVH images is complementary, as it visualizes these small soft tissue structures due to the higher resolution in the plain of sectioning and the color of the different structures in the section. Three-dimensional surface and volume rendering of reconstructions of the CVH data set can help medical students and less experienced thoracic surgeons to familiarize themselves with the topographic anatomy of the superior mediastinal structures and their spatial relationships, and thus with interpreting CT images of patients.

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Photorealistic virtual anatomy based on Chinese Visible Human data

Cited by 22 publications

References 6 publications

Do images influence assessment in anatomy? Exploring the effect of images on item difficulty and item discrimination

Do images influence assessment in anatomy? Exploring the effect of images on item difficulty and item discrimination

Virtual Movement of the Ankle and Subtalar Joints Using Cadaver Surface Models

Comparative study of thin sectional anatomical images from Chinese Visible Human data set and computed tomography images of superior mediastinum

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