在CT肺血管造影上，将重建的四腔心视图与轴位成像进行比较，以评估右心室扩大情况。
Reconstructed 4-chamber views compared with axial imaging for assessment of right ventricular enlargement on CT pulmonary angiograms.
作者信息
Stein Paul D, Matta Fadi, Yaekoub Abdo Y, Goodman Lawrence R, Sostman H Dirk, Weg John G, Hales Charles A, Hull Russell D, Leeper Kenneth V, Beemath Afzal, Saeed Ibrahim M, Woodard Pamela K
机构信息
Department of Research, St Joseph Mercy Oakland Hospital, Pontiac, MI 48341-5023, USA.
出版信息
J Thromb Thrombolysis. 2009 Oct;28(3):342-7. doi: 10.1007/s11239-009-0331-5. Epub 2009 Mar 27.
PURPOSE
To test the hypothesis that right enlargement assessed from right ventricular/left ventricular (RV/LV) dimension ratios of computed tomographic (CT) angiograms are equivalent irrespective of whether measured on axial views or reconstructed 4-chamber views.
METHODS
RV/LV dimension ratios were calculated from measurements on axial views, manually reconstructed 4-chamber views and computer generated reconstructed 4-chamber views of CT angiograms in 152 patients with PE.
RESULTS
Paired readings of the axial view and manually reconstructed 4-chamber view showed agreement with RV/LV > or =1 or RV/LV <1 in 114 of 127 (89.8%). Paired readings also showed agreement in 119 of 127 (93.7%) with axial views and computer generated reconstructed 4-chamber views. The McNemar test showed no statistically significant difference between assessments of RV enlargement (RV/LV > or = 1) with any method.
CONCLUSION
Right ventricular enlargement can be determined from axial views on CT angiograms, which are readily and immediately available, without obtaining 4-chamber reconstructed views.
目的
检验以下假设：无论在轴位视图上测量还是在重建的四腔视图上测量，通过计算机断层扫描（CT）血管造影的右心室/左心室（RV/LV）尺寸比评估的右心室增大情况是等效的。
方法
在152例肺栓塞患者中，从CT血管造影的轴位视图、手动重建的四腔视图和计算机生成的重建四腔视图测量值计算RV/LV尺寸比。
结果
轴位视图与手动重建的四腔视图的配对读数显示，在127例中有114例（89.8%）的RV/LV≥1或RV/LV<1情况一致。轴位视图与计算机生成的重建四腔视图的配对读数在127例中也有119例（93.7%）一致。McNemar检验显示，使用任何方法评估右心室增大（RV/LV≥1）之间无统计学显著差异。
结论
无需获取四腔重建视图，通过CT血管造影的轴位视图即可确定右心室增大情况，轴位视图随时可得。
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