3‐D Analysis & Display of Sequential Position Data in the Lumbar Spine
作者:
RICHARD,
HALLGREN HERBERT,
REYNOLDS ROBERT,
SOUTAS-LITTLE ROBERT,
HUBBARD JAMES,
期刊:
Journal of Clinical Engineering
(OVID Available online 1988)
卷期:
Volume 13,
issue 1
页码: 51-58
ISSN:0363-8855
年代: 1988
出版商: OVID
关键词: CAT Scan;Image Analysis;Solid Geometry Modeling;Lumbar Vertebra
数据来源: OVID
摘要:
An investigation of three-dimensional lumbar position and mobility has been made by combining roentgen stereophotogrammetry with reconstructed solid images of serialized CAT scans of lumbar vertebra. The three-dimensional positions of L3, L4, and L5 in a 56-year old male, unembalmed cadaver were measuredin situwith roengten stereophotogrammetry in four positions of lumbar flexion. The excised bones were cleaned and approximately 30 serialized slices in a CAT scan were obtained. These images were reconstructed using MOVIE.BYU and computer programs developed according to a protocol described in the paper. Six of nine targets in both measurement systems were located with an average difference of distance ranging from 0.4 to 1.0 mm. These computer-generated images have been used to describe local, intervertebral angular movements of .035 to .128 radians and linear movements of .00 to .12 cm as calculated by a “screw axis‘’ analysis. This investigation provides a technology that can potentially be used by both clinicians and engineers in their investgations of local spinal movements in the human body.
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