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目的评价16层螺旋CT血管造影(16SCTA)及重建技术在血管病变诊断中的临床应用价值。方法100例血管病变行16SCTA,采用准直0.75 mm,层厚1 mm,间隔0.5 mm。重建应用多平面重建(MPR),最大密度投影(M IP)及容积显示技术(VRT)。结果100例血管病变中65例经手术病理或DSA证实。100例病变中,8例脑动脉瘤,2例脑动静脉畸形,6例肺动静脉畸形,9例肺动脉栓塞伴下肢深静脉血栓,4例肺隔离症,20例冠状动脉软斑块和/或钙化,12例主动脉瘤,3例肾动脉狭窄,2例肠系膜上动脉血栓,1例股动脉狭窄,33例软组织血管瘤。这3种重建技术均能显示病变的大小、形态及范围,对病变可进行任意角度重建和观察,VRT可立体地显示病变。MPR和M IP可显示血栓,M IP和VRT显示钙化。结论综合应用16层螺旋CT的各种重建技术,能够全面而清晰地显示血管病变,可取代DSA,为患者提供一种安全可靠的诊断手段,对临床治疗具有重要指导意义。
Objective To evaluate the clinical value of 16-slice spiral CT angiography (16SCTA) and reconstruction in the diagnosis of vascular lesions. Methods 100 cases of vascular lesions line 16SCTA, using collimation 0.75 mm, layer thickness 1 mm, interval 0.5 mm. Reconstruction Applications MPR, M IP and VRT. Results Of the 100 cases of vascular disease, 65 cases were confirmed by pathology or DSA. Of the 100 lesions, 8 had cerebral aneurysms, 2 had cerebral arteriovenous malformations, 6 had pulmonary arteriovenous malformations, 9 had pulmonary embolism with deep vein thrombosis, 4 had pulmonary sequestration, 20 had soft plaques and / Or calcification, 12 cases of aortic aneurysm, 3 cases of renal artery stenosis, 2 cases of superior mesenteric artery thrombosis, 1 case of femoral artery stenosis and 33 cases of soft tissue hemangiomas. All three kinds of reconstruction techniques can display the size, shape and extent of the lesion. The lesion can be reconstructed and observed at any angle. The VRT can display the lesion stereoscopically. MPR and M IP showed thrombus, M IP and VRT showed calcification. Conclusion The comprehensive application of 16-slice spiral CT reconstruction techniques can fully and clearly show the vascular lesions, DSA can be replaced to provide patients with a safe and reliable diagnostic tool, which has important guiding significance for clinical treatment.