Spine Proportion through Implementation of Neural Networks


Authors

Daniela Vilas Boas, David Gonçalves, Sofia N. Wasterlain

Reference

Daniela Vilas Boas, 2016. Missing values: estimativa da altura de vértebras ausentes ou mal preservadas para a aplicação do método anatómico na estimativa da estatura. Dissertação de Mestrado em Evolução e Biologia Humanas, orientada pela Professora Doutora Sofia Wasterlain e pelo Doutor David Gonçalves e apresentada ao Departamento de Ciências da Vida da Faculdade de Ciências e Tecnologia da Universidade de Coimbra






Lower Whisker

Smallest observation greater than or equal to lower hinge - 1.5 * IQR

Lower Hinge

25% quantile

Middle

Median, 50% quantile

Diamond

Arithmetic mean

Upper Hinge

75% quantile

Upper Whisker

Largest observation less than or equal to upper hinge + 1.5 * IQR



Input Variables
Measurements

(milimeters)



Default values are arithmetic means from our database.

Min and max are limited by a 6sigma factor.

Results

MAE - mean absolute error; RMAE - relative mean absolute error; MAPE - mean absolute percentage error; RMSE - root mean squared error; RRMSE - relative root mean squared error; RSquared - R-Squared; AdjRSquared - Adjusted R-Squared.

Descriptions


C2, 2nd cervical vertebra height

The most superior point of the odontoid process (dens) to the most inferior point of the anterioinferior rim of the vertebral body.

(Spreading caliper)


C3 - C7, 3rd-7th cervical vertebra height

The maximum height of the vertebral body, measured in its anterior third, medial to the superiorly curving edges of the centrum.

(Spreading caliper)


T1 - T12, thoracic vertebrae height

The maximum height of the vertebral body, anterior to the rib articular facets and pedicles.

(Spreading caliper)


L1 - L5, lumbar vertebrae height

The maximum height of the vertebral body, anterior to the pedicles, not including any swelling of the centrum due to the pedicles.

(Spreading caliper)


S1, 1st sacral vertebra height

The maximum height between the anterior-superior rim of the body (i.e., the sacral promontory) and its point of fusion/articulation with the second sacral vertebra. This most commonly occurs in the midline. Measure with the calipers parallel to the anterior surface of S1.

(Spreading caliper)