Vertebrae tracking in lumbar spinal video-fluoroscopy is the first step in the analysis of vertebrae kinematic in patients with lower back pain. This paper presents a technique to track the vertebrae using particle filters with image gradient based likelihood measurement. In the first X-ray frame, the vertebrae are semi-automatically segmented and a bi-spline curve is fitted to the landmark poi...

Transitional lumbosacral vertebrae in the form of SI lumbarization and LV sacralization are classified as spinal anomalies. In domestic medical literature, there few publications devoted to these pathological conditions. course a study available literature on problem transitional vertebrae, it was found that frequency cases diagnosis ranges from 4 30% clinical cases. The share patients with lum...

OBJECTIVES This study sets out to prospectively investigate the incidence of transitional vertebrae and numerical variants of the spine. MATERIALS AND METHODS Over a period of 28 months, MRIs of the whole spine were prospectively evaluated for the presence of transitional lumbosacral vertebrae and numerical variants of the spine. RESULTS MRI of the whole spine was evaluated in 420 patients,...

To analyze the CT and MRI features of spinal osteolytic metastases to investigate the diag nostic value of CT and MRI images of this disease. CT and MRI imaging features of 50 patients with spinal osteolytic metastases confirmed pathologically were analyzed retrospectively. CT imaging features: 72 vertebrae were involved in 50 patients, 32 vertebrae showed a rounded soft tissue low density area...

 Background: Excessive lumbar vertebrae translation and rotation in sagittal plane has been attributed as an associated factor of lumbar segmental instability (LSI) and low back pain (LBP). Reduction of these abnormalities improves back pain. The aim of this study was to investigate the effect of core stability exercise on the translation and rotation of lumbar vertebrae in sagittal plan...

OBJECTIVE To investigate the bone mineral density (BMD) of cervical vertebrae in a population-stratified manner and correlate with that of the lumbar vertebrae. MATERIALS AND METHODS Five hundred and ninety-eight healthy volunteers (254 males, 344 females), ranging from 20 to 64 years of age, were recruited for volumetric BMD (vBMD) measurements by quantitative computed tomography. Basic info...

background: spine of an adult is made up of five areas that include 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, sacrum and finally coccyx. selecting appropriate assumptions for modeling and biological analysis of the spine components has a significant impact on the accuracy of results in biomechanical simulation for different modes. methods: in the present study, biomechani...