A Three-Dimensional Reconstruction of the Temporal Bone by the Helical Scanning Ct and Its Clinical Application

Yonekawa, Hiroyuki; Ohashi, Motoaki; Miyashita, Souji; Gotoh, Mizuho; Nemoto, Satohiko; Kikuchi, H; Sakai, Noboru; Inuyama, Yukio

doi:10.3950/jibiinkoka.96.1465

Cited by 3 publications

(3 citation statements)

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“…Based on the high quality segmentation, the final 3D model of the cochlea was quite vivid and accurate, and the further developed virtual endoscope could be very close to reality. The reconstructed 3D model of the cochlea is significant Some researchers have reconstructed the bone labyrinth, membrane labyrinth, lymph or cochlear nerve using CT or MRI methods (Thorne et al 1999;Reisser et al 1996;Yonekawa et al 1993;. Through sectioning and staining of the temporal bone, some have reconstructed the modiolus, spiral lamina, spiral ganglion, Corti's organ and even hair cell and nerve endings Viktor et al 2002).…”

Section: Discussionmentioning

confidence: 99%

A detailed 3D model of the guinea pig cochlea

et al. 2007

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Several partial models of cochlear subparts are available. However, a complete 3D model of an intact cochlea based on actual histological sections has not been reported. Hence, the aim of this study was to develop a novel 3D model of the guinea pig cochlea and conduct post-processes on this reconstructed model. We used a combination of histochemical processing and the method of acquiring section data from the visible human project (VHP) to obtain a set of ideal raw images of cochlear sections. After semi-automatic registration and accurate manual segmentation with professional image processing software, one set of aligned data and six sets of segmented data were generated. Finally, the segmented structures were reconstructed by 3D Slicer (a professional imaging process and analysis tool). Further, post-processes including 3D visualization and a virtual endoscope were completed to improve visualization and simulate the course of the cochlear implant through the scala tympani. The 3D cochlea model contains the main six structures: (1) the inner wall, (2) modiolus and spiral lamina, (3) cochlea nerve and spiral ganglion, (4) spiral ligament and inferior wall of cochlear duct, (5) Reissner's membrane and (6) tectorial membrane. Based on the results, we concluded that ideal raw images of cochlear sections can be acquired by combining the processes of conventional histochemistry and photographing while slicing. After several vital image processing and analysis steps, this could further generate a vivid 3D model of the intact cochlea complete with internal details. This novel 3D model has great potential in teaching, basic medical research and in several clinical applications.

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Section: Discussionmentioning

confidence: 99%

A detailed 3D model of the guinea pig cochlea

et al. 2007

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“…Since CT shows detailed bony structures well, it is the optimal imaging method for temporal bone studies, especially in middle ear surgery, but observations of the contours of the three ossicles have not been possible without tympanotomy. Helical CT can demonstrate threedimensional images of ossicular chains (Yonekawa et al, 1993;Edamatsu et al, 1995;Hermans et al, 1995), and is a powerful tool for evaluation of anomalies, dislocations and fractures. Hermans et al (1995) studied eight patients with a known conductive hearing loss and reported that high quality images could be obtained in all patients.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional imaging of ENT diseases with helical computed tomography

et al. 1996

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“…The development of CT and related technologies has made possible high resolution images of the ear and facilitates management of ear disorders. Such progress has also made possible three-dimensional images (3-D images) especially using helical (spiral) CTs (Luker et al, 1993;Yonekawa et al, 1993;Hermans et al, 1995a,b;Muraoka et al, 1996). The incudostapedial joint (I-S joint) is one such small but clinically significant structure in the middle ear.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional reconstruction of the incudostapedial joint with helical computed tomography

Yamada

Tsunoda

Muraoka³

et al. 1999

J. Laryngol. Otol.

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Three-dimensional images of the incudostapedial joint (I-S joint) were reconstructed using helical computed tomography (CT). The images of the joint were most often reconstructed when threshold values were selected at −500 to −700 Hounsfield Units. These shapes were changed by choosing various threshold values. Histological examinations of the cadaver specimen indicate that these changes are due to structure of the I-S joints. We conclude that these 3-D images may be useful in assessing pathology of the I-S joint.

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A Three-Dimensional Reconstruction of the Temporal Bone by the Helical Scanning Ct and Its Clinical Application

Cited by 3 publications

References 1 publication

A detailed 3D model of the guinea pig cochlea

A detailed 3D model of the guinea pig cochlea

Three-dimensional imaging of ENT diseases with helical computed tomography

Three-dimensional reconstruction of the incudostapedial joint with helical computed tomography

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