4/16/2024 0 Comments Cervical spine complete x ray![]() ![]() However, measuring the dynamic parameter of "intervertebral movement" requires time-consuming methods such as superimposition of X-ray images and calculation by writing many lines, which are often not performed in actual clinical practice due to insufficient time. If the anterior–posterior diameter of the spinal canal is narrow and the intervertebral movement is significantly larger than normative values, it is important to understand the cause of spinal cord compression and to decide whether surgical procedure is suitable or not, along with the further evaluation by cervical magnetic resonance imaging (MRI). A cervical spine radiograph examines the static parameter of the “anteroposterior diameter of the spinal canal” in the lateral view of the cervical spine and the dynamic parameter of the “intervertebral movement of the cervical vertebrae” calculated by comparing the lateral views of cervical anteversion and retroversion. The cervical spine consists of seven vertebrae and is referred to as C1–C7 from the skull down therefore, C1 and C2 refer to the first and second cervical vertebrae from the skull (Fig. If cervical myelopathy is suspected on physical and neurological examination, cervical spine radiography will be performed to evaluate the presence of ossification of the posterior longitudinal ligament or other degenerative bone changes. The diagnosis of cervical myelopathy is based on neurological examination, physical examination, and imaging findings. Early diagnosis and treatment contribute to the prognosis. The treatment of severe cervical myelopathy not only requires surgery but also has a worse prognosis than if therapeutic intervention is performed at an early stage. When the disease progresses, numbness in the limbs, dyskinesia, gait disturbance, and vesicorectal disturbance appear however, because the progression is relatively slow, patients are often unaware of their symptoms and are referred to a spine specialist only after the disease has become severe. Trial registration Retrospectively registered with opt-out agreement.Ĭervical myelopathy is a neurological disease caused by age-related degeneration of the cervical spine and ossification of the posterior longitudinal ligament. ![]() This system will be effective in reducing the burden on and saving time of orthopedic surgeons by avoiding manually measuring X-ray images. ConclusionsĪ system for measuring cervical spine range of motion on X-ray images was constructed and showed accuracy comparable to that of spine surgeons. The average standard deviations for each measurement by specialist and residents are 2.9° and 3.2°. The results of measuring the CRoM angle with the proposed cervical spine motion angle measurement system showed that the mean error from the true value was 3.5° and the standard deviation was 2.8°. The mean intersection over union value for all the 46-test data was 0.85. Of a total of 322 cervical vertebrae in 46 images, 313 (97%) were successfully estimated by our learning model. Cervical spine range of motion was measured manually on X-ray images and compared with automatic measurement by this system. Two experienced spine surgeons and two residents performed the study on the remaining 23 cases. The accuracy of the system was verified by comparison with spine surgeons and residents to determine whether the system could withstand actual use.Īn algorithm was created to recognize the four corners of the vertebral bodies in a lateral cervical spine X-ray image, and a system was constructed to automatically measure the range of motion between each vertebra by comparing X-ray images of the cervical spine in extension and flexion. To reduce the burden of clinicians, a system that automatically measures the range of motion was developed by comparing the flexed and extended positions in the lateral view of a simple X-ray of the cervical spine. Evaluation of cervical intervertebral instability by simple X-ray is used in clinical setting and the information about instability is important to understand the cause of myelopathy, but evaluation of the intervertebral instability by X-ray is complicated. Cervical myelopathy is a progressive disease, and early detection and treatment contribute to prognosis. ![]()
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