Improvements in measuring vertebral rotation from the projections of the pedicles

Drerup, Burkhard

doi:10.1016/0021-9290(85)90292-1

Cited by 59 publications

(31 citation statements)

References 6 publications

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“…However, the PA measurement of the Cobb angle is limited to 2D, which cannot reveal the full extent of the 3D spinal deformity. The axial vertebral rotation (AVR) is another important parameter that can be used to assess the severity of scoliosis, to predict the risk of curve progression, and to evaluate the treatment outcome [2,3]. Therefore, AVR becomes increasingly prominent in the study of scoliosis.…”

Section: Introductionmentioning

confidence: 99%

Reliability of the axial vertebral rotation measurements of adolescent idiopathic scoliosis using the center of lamina method on ultrasound images: in vitro and in vivo study

Chen

Lou

2016

Eur Spine J

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Section: Introductionmentioning

confidence: 99%

Reliability of the axial vertebral rotation measurements of adolescent idiopathic scoliosis using the center of lamina method on ultrasound images: in vitro and in vivo study

Chen

Lou

2016

Eur Spine J

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“…Although this would be of minimal importance to those who measure the rotation of vertebrae relative to immediately adjacent segments, it might offer confusion for those wishing to use absolute projected rotation in their analysis. 14,15,16 We have calculated the numbers in Fig 2 to the 1000th of an inch as opposed to the 100th of an inch used in the other figures for a purpose. Taking the measurements to this extreme is both cumbersome and unnecessary for practical purposes.…”

Section: Discussionmentioning

confidence: 99%

Computer modeling of selected projectional factors of the 84-in focal film distance anteroposterior full spine radiograph compared with 40-in focal film distance sectional views

Coleman¹,

Lopes²,

Suttles³

2011

Journal of Chiropractic Medicine

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In this study, the 84-in A-P full spine produced less projected vertebral rotation on lateral translation. Its angles of divergence were greater than the 40-in 10 × 12 and equal to the 40-in 14 × 17-in film. Except for a 5.4-in section at both the upper and lower margins, the 84-in full spine view was within the angles of divergence of a 40-in 10 × 12. The full spine film produced projected ilium lengthening and lowering.

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“…Drerup [4,5] improved the Nash-Moe method by modifying the measurement of the position of anatomical landmark that is the projections of vertebral pedicles. The accuracy of the measurement was affected by ignoring the facts such as increasing vertebral rotation; the radiographic projection of the vertebral body is not constant, resulting in inaccurate measurement of its properties (e.g., width of vertebra).…”

Section: Literature Reviewmentioning

confidence: 99%

Identification of Apical Vertebra for Grading of Idiopathic Scoliosis using Image Processing

Anitha

Prabhu

2011

J Digit Imaging

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Scoliosis is a 3-D deformity of spinal column, characterized by both lateral curvature and vertebral rotation. The disease can be caused by congenital, developmental, or degenerative problems; but most cases of scoliosis actually have no known cause, and this is known as idiopathic scoliosis. Vertebral rotation has become increasingly prominent in the study of scoliosis and the most deformed vertebra is named as apical vertebra. Apical vertebral deformity demonstrates significance in both preoperative and postoperative assessment, providing better appreciation of the impact of bracing or surgical interventions. Precise measurement of apical vertebral rotation in terms of grading is most valuable for the determination of reference value in normal and pathological conditions for better understanding of scoliosis. Routine quantitative evaluation of vertebral rotation is difficult and error prone due to limitations of observer characteristic and specific imaging property. This paper proposes automatic identification of the apical vertebra and its parameter that depends on the objective criteria of measurement using active contour models. The proposed technique is more accurate and is a reliable measurement compared to manual and computer-assisted system.

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Improvements in measuring vertebral rotation from the projections of the pedicles

Cited by 59 publications

References 6 publications

Reliability of the axial vertebral rotation measurements of adolescent idiopathic scoliosis using the center of lamina method on ultrasound images: in vitro and in vivo study

Reliability of the axial vertebral rotation measurements of adolescent idiopathic scoliosis using the center of lamina method on ultrasound images: in vitro and in vivo study

Computer modeling of selected projectional factors of the 84-in focal film distance anteroposterior full spine radiograph compared with 40-in focal film distance sectional views

Identification of Apical Vertebra for Grading of Idiopathic Scoliosis using Image Processing

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