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ABSTRACT: Discussions relating to the biomechanics of the larynx are still generally controversial. The purpose of this study is to develop a 3D model of the larynx based on high-resolution computer tomography (HRCT) data identifying and visualizing anatomical landmarks and structures of the larynx. We examined four fresh cadaver larynges with HRCT. The DICOM (Digital Imaging and Communication in Medicine) data were post-processed with the software package MIMICS for three-dimensional visualization. All relevant structures of the laryngeal cartilages could be identified on HRCT and visualized in a 3D model. We conclude that 1) HRCT provides excellent data for three-dimensional visualization of the laryngeal anatomy, and 2) the combined technology of HRCT and MIMICS is useful to study the biomechanics on 3D images and for preoperative planning of laryngeal framework surgery.
Logopedics, phoniatrics, vocology 04/2010; 35(1):19-23.
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ABSTRACT: We present two cases of tumorlike lipomatous lesions in the thyroid cartilage. Both presented as circumscribed tumors by ultrasonography and were identified accidentally.
Two tumorlike lesions were identified in two different patients. Additionally, computed tomography and magnetic resonance imaging scans of the laryngeal skeleton were performed. Surgery was performed in one patient, and the lesion was excised. Histopathology revealed fatty tissue with several foci of hematopoietic cells.
This is the first report of intralaminar tumorlike lipomatous lesions in the thyroid cartilage. These should be included in the differential diagnoses of primary cartilaginous lesions of the laryngeal skeleton.
Journal of voice: official journal of the Voice Foundation 02/2010; 25(4):487-9. · 0.95 Impact Factor
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ABSTRACT: Modern laryngeal framework surgery (LFS) requires an exact understanding of the laryngeal biomechanics and precise pre-operative planning, for which bi-planar imaging is not sufficient. The aim of the study was to test whether MIMICS, a commercially available software package for three-dimensional (3D) rendering of high-resolution computerised tomography (HRCT), is suitable for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning. We examined four cadaver larynx and one patient larynx. In the five larynges, all relevant structures and landmarks could be 3D visualised. Superimposing of two HRCT scans shows that when the arytenoids move from 'respiration' to 'phonation', they perform a rotating, translating and tilting motion. Moreover, we could demonstrate that the vocal fold elongates by 7% with cricothyroid approximation. We conclude that MIMCS is well suited for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning of LFS procedures.
Archives of Oto-Rhino-Laryngology 10/2009; 267(4):557-63. · 1.29 Impact Factor
