Arthurs et al developed equations for estimating the mid-spinal canal depth (MSCD) in a neonate based on magnetic resonance imaging (MRI). The authors are from Great Ormond Street Hospital for Children, Institute for Women's Health London, UCL Institute of Child Health and UCL Institute of Cardiovascular Science.

Patient selection: neonate


Output: mid-spinal canal depth (MSCD)



(1) body weight in kilograms


estimated mid-spinal canal depth in mm =

= (2.9 * (body weight)) + 4.97


simplified equation in mm =

= (3 * (body weight)) + 5

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