多层螺旋CT泪道造影与MR泪道成像对泪道阻塞的对比分析-影像医学与核医学专业论文.docxVIP

Abstract Abstract IV IV ABSTRACT Purpose： Discussing the clinical applicaiton of multi-slice spiral computed tomography dacryocystography(CTD) and magnetic resonance dacryocystography (MRD) in the lacrimal duct obstruction diseases (LDOD). Method： We have made retrospective analysis about 45 epiphora patients (80 laterals/slides) with spiral CT scanning and 40 LDOD patients (75 laterals/slides) with MRI examinations. The reconstruction technique has been taken in the CT scannning, including axial and coronal contrast examination. Both 3D-FRFSE MRD and FRFSE-T2WI were used in MRI scanning sequence. The original pictures adopted Maximum Intensity Projection (MIP). All the epiphora patients were taken endoscopy and/or surgery within one week. Result： Reconstruction of multi planar reconstruction using CT dacryocystography (MPR), curved planar reformation (CPR), maximum intensity projection (MIP) and other post-processing can clearly show the structure and the degree of stenosis, the lacrimal passage. Including 0 cases of typeⅠ; type Ⅱin 6 cases (8%); 24 cases of type Ⅲ (51%); typeⅣ: 18 cases (72%); 7 cases were type Ⅴ (63%);2, 85 cases of epiphora of patients, 2 cases (2 sides) of congenital nasolacrimal duct obstruction in children, 1 cases (2 sides) of bilateral lacrimal dysfunction patients. In 25 cases (36 sides) of lacrimal canaliculus or lacrimal obstruction alone, CT detected 15 side, the detection rate of 41.7%. 60 cases of obstruction of the nasolacrimal duct, CT detected 60 side, the detection rate was 50.4%. 3, CTD of the lacrimal canaliculus, lacrimal sac and nasolacrimal duct obstruction were detected in different position, the statistical analysis of P=0.010, there is a significant difference P0.05. 4, in the MRD group, the statistical analysis of P=1.000 P0.05 had no significant difference between the detection rate of lacrimal duct obstruction in different location. 5, group CTD includes 80 sides, positive rate was 93.8% in check, the negative