Variability of Child Rib Bone Hounsfield Units using in vivo Computed Tomography
TypeCommunications avec actes
The variability assessment of the rib bone mechanical properties during the growth process is still missing. These properties could not be obtained in vivo on children. Relationships have been obtained between Hounsfield Units from computed tomography (CT) and mechanical properties (e.g. for the cortical bone on adults). As a first step for investigation of the mechanical properties of child ribs, the aim of this study was to determine the Hounsfield Units variation of child ribs from CT‐scan data, by rib level, along the rib and within the rib sections. Twenty‐seven right ribs of levels 4, 6 and 9 were processed from 11 thoracic CT scans of children without bone lesions aged between 1 and 10 years. A first set of 10 equidistributed cross‐sections normal to the rib midline were extracted. Sixteen equally distributed elements defined 4 areas into the cortical band: internal, external, caudal and cranial. Within the rib sections, Hounsfield Units were found significantly higher in internal and external areas than in caudal and cranial. In a further step using calibrated CT scans, it would be possible to derive the mechanical properties of in vivo child ribs using bone density correlation with Hounsfield Units.
Showing items related by title, author, creator and subject.
In vivo assessment of the mechanical properties of the child cortical bone using quantitative computed tomography ZHU, Yumin; BERMOND, François; PAYEN DE LA GARANDERIE, J; PIALAT, J-B; SANDOZ, Baptiste; PRACROS, J-P; SKALLI, Wafa; MITTON, David (2014)The mechanical properties of the rib cortical bone are extremely rare on children due to difficulties to obtain specimens to perform conventional tests. Some recent studies used cadaveric bones or bone tissues collected ...
Quantitative geometric analysis of rib, costal cartilage and sternum from childhood to teenagehood SANDOZ, Baptiste; BADINA, Alina; LAPORTE, Sébastien; LAMBOT, Karene; MITTON, David; SKALLI, Wafa (Springer, 2013)Better understanding of the effects of growth on children’s bones and cartilage is necessary for clinical and biomechanical purposes. The aim of this study is to define the 3D geometry of children’s rib cages: including ...
SANDOZ, Baptiste; LAPORTE, Sébastien; SKALLI, Wafa; MITTON, David (Taylor & Francis, 2010)In order to improve the reliability of children’s models, the aim of this study was to determine the subject-specific masses and 3D locations of the centres of mass (CoM) of body segments using biplanar X-rays. Previous ...
Non-invasive assessment of human multifidus muscle stiffness using ultrasound shear wave elastography: A feasibility study MOREAU, Baptiste; VERGARI, Claudio; GAD, Hisham; SANDOZ, Baptiste; SKALLI, Wafa; LAPORTE, Sébastien (Sage Journals, 2016)INTRODUCTION: There is a lack of numeric data for the mechanical characterization of spine muscles, especially in vivo data. The multifidus muscle is a major muscle for the stabilization of the spine and may be involved ...
TOUBIANA MEYER, Rivka; LAVILLE, Aurélien; BAUDU, Samuel; SANDOZ, Baptiste; SKALLI, Wafa; LAPORTE, Sébastien (2014)Introduction Vertebrae present a wide interindividual variability, with a shape strongly dependent on the vertebral level. Based on a previous validated “parametric and subject-specific modeling” (PSSM) method (Laville et ...