Coordinates partition of lumbar disc herniation based on CT value / 国际生物医学工程杂志

ABSTRACT

Objective According to the CT or MRI images of lumbar disc herniation (LDH),a simple and accurate coordinate partitioning method for describing the size and location of protrusions based on CT value was proposed.This method can provide a reference for the diagnosis and surgical treatment of LDH.Method The system was developed by experienced clinicians and imaging experts.In this system,CT and MR data of patients with LDH was analyzed,and classified by coordinate partition according to the degree of LDH.According to the lumbar disc anatomical and clinical features,the protrusions were located in X axis,Y axis,and Z axis.Results In this system,the position of the protrusions in the spinal canal was respectively partitioned from X axis (horizontal plane),Y axis (sagittal plane) and Z axis (coronal plane),where the X and Y axes were divided into 8 zones (-4 to 4) and the Z axis was divided into 4 zones (1 to 4).The size,i.e.the degree of protrusions,was described by the sum of the absolute values of the corresponding position zones.The greater the value,the more serious of the protrusion is.Conclusion The method of coordinate partitioning based on CT value can well reflect the pathological types,precise position and degree of LDH,and thus provide references for the diagnosis and the selection of surgical methods and surgical occasion of LDH.