SWI And DTI In The Diagnosis Of Acute Cervical Spinal Injury Application Value

Objective:A preliminary study on the application of susceptibility weightedimaging (Susceptibility Weighted Imaging, SWI) and diffusion tensorimaging (Diffusion Tensor Imaging, DTI),the value of clinicalapplication of sequence in the diagnosis of acute spinal cord injury.Compared to the conventional MRI sequence and SWI sequencedetection parameters rate and DTI scanning sequence hemorrhage onacute spinal cord injury (including the FA and ADC values) quantitativeanalysis of acute cervical spinal cord injury.Materials and methods:Collected2013July-2014March18patients for acute cervicalspinal cord injury to our hospital for treatment, all patients were treatedby clinicians according to clinical symptoms and physical signs thehistory of trauma, a preliminary judge for the patients of acute cervicalspinal cord injury. Application of Siemens3.0T superconductingmagnetic resonance, head neck coil were performed with conventionalMRI scanning, SWI and DTI scanning, and MR-DTI is the selection of asingle shot fast spin echo (Single-shot Echo-planar Imaging, EPI),select the15gradient direction, b value0,500s/mm2, underwent sagittal scanning, and position according to the conventionalT2WIsagittal plane, which is decided by the analysis of the levels weremeasured in patients with acute spinal cord injury; damage area anddamage area level regions of the FA and ADC values were compared,respectively, and then were statistically analyzed. The cervical spinalcord damage of fiber bundle reconstruction using DTT spinalreconstruction technique, observation. SWI series by axial scanning,observe whether impaired the damaged area of the cervical spinal cordhave abnormally low signal, and compared with the conventional MRsequences, the detection rate of hemorrhage.Results:Magnetic resonance conventional MR sequence, SWI sequenceand DTI on the damaged spinal cord after scanning. SWI scanningsequence,7patients in the conventional MRI sequences showed noabnormal high signal area, the corresponding spinal cord segments inSWI showed small patchy low signal;8patients in the conventional MRIsequences and SWI showed abnormal signal;3patients in theconventional MRI sequences and SWI showed abnormal signals. Bystatistical analysis, the detection rate of cervical spinal cord injurybleeding, significant statistical difference.In the DTI sequences, the corresponding injury of the cervical spinal cordsegments of FA value, ADC value of cervical spinal cord and its corresponding damaged area above the normal regions of the FA andADC value were significantly lower in comparison, statistical analysis,significant difference. And the negative in conventional MR sequence inpatients after DTI scanning, them easured FA value and ADC valuewere lower, that of DTI sequence of cervical cord injury thanconventional MR sequence is more sensitive, more objective.For cervical spinal reconstruction by DTT, to observe the damage formand complete cervical spinal cord fiber bundles, the fiber bundlesare observed without distortion, compression,truncation of change.Conclusion:1. DTI scan can show, cervical spinal cord in patients with acutecervical spinal cord injury damaged areas of the FA and ADC values weresignificantly decreased, qualitative, and objective evaluation can be madeon the patients of acute cervical spinal cord injury.2. DTT can directly show the complete cervical spinal cord tractsand damage.3. SWI was better than the conventional MR sequence found aftercervical cord injury hemorrhage sensitive.