Effectiveness of Application of CT Pulmonary Angiography and Dual
Energy Perfusion Imaging in the Diagnosis of Pulmonary Embolism
BAN Yun-qing1, LI Yuan-yuan2,HUI Ting1, LIU Yan1
1. Imaging Center, the Fifth Affiliated
Hospital of Xinjiang Medical University,
Urumqi Xinjiang 830011, China; 2. CT
Room, the Second People’s Hospital of
Hami, Urumqi Xinjiang 830011, China
Abstract:Objective To discuss the effectiveness of application of CTPA (CT Pulmonary Angiography)
and DEPI (Dual Energy Perfusion Imaging) in the diagnosis of pulmonary embolism. Methods A
retrospective analysis of clinical data of 31 clinically-diagnosed patients with pulmonary embolism was
made. All patients underwent pulmonary artery angiography under the mode of dual energy so as to
obtain two groups of data (CTPA data and DEPI data). CTPA data and DEPI data were taken as Group
A1 and Group A2 respectively. Analysis of A1 Group could display whether the pulmonary artery
thrombus existed and the degree of embolization; while, analysis of Group A2 could determine the
pulmonary perfusion defects, and the degree of defects. The correlation between CTPA and DEPI was
analyzed. Results Images of A1 and A2 Group had no statistically significant difference in displaying of
embolus and thrombotic degree of pulmonary stem (Grade I) and lobar artery (Grade II) (P>0.05). While,
statistically significant difference was seen in displaying of pulmonary segmental artery (Grade III) and
pulmonary sub-segment artery (Grade IV) (P<0.05). Conclusion CTPA and DEPI showed different
indicators in diagnosis of pulmonary embolism, combination of these two methods could improve the
accuracy in diagnosis of the disease.
班允清1,李媛媛2,惠婷1,刘艳1. CT肺血管造影和双能量肺灌注成像对肺栓塞的诊断价值[J]. 中国医疗设备, 2016, 31(8): 54-57.
BAN Yun-qing1, LI Yuan-yuan2,HUI Ting1, LIU Yan1. Effectiveness of Application of CT Pulmonary Angiography and Dual
Energy Perfusion Imaging in the Diagnosis of Pulmonary Embolism. China Medical Devices, 2016, 31(8): 54-57.