Naidich T P, Firestone M I, Blum J T, Abrams K J
Department of Radiology, Mount Sinai Medical Center, One Gustave Levy Place, Box 1234, New York, NY 10029, USA.
Neuroradiology. 2003 Nov;45(11):785-92. doi: 10.1007/s00234-003-1017-x. Epub 2003 Oct 14.
We tested the hypothesis that frequency analysis of the anatomic zones affected by single anterior (A), posterior (P), and middle (M) cerebral artery (CA), multivessel, and watershed infarcts will disclose specific sites (peak zones) most frequently involved by each type, sites most frequently injured by multiple different types (vulnerable zones), and overlapping sites of equal relative frequency for two or more different types of infarct (equal frequency zones). We adopted precise definitions of each vascular territory. CT and MRI studies of 50 MCA, 20 ACA-MCA, three PCA-MCA, and 30 parasagittal watershed infarcts were mapped onto a standard template. Relative infarct frequencies in each zone were analyzed within and across infarct types to identify the centers and peripheries of each, vulnerable zones, and equal frequency zones. These data were then correlated with the prior analysis of 47 ACA, PCA, dual ACA-PCA, and ACA-PCA-MCA infarcts. Zonal frequency data for MCA and watershed infarcts, the sites of peak infarct frequency, the sites of vulnerability to diverse infarcts, and the overlapping sites of equal infarct frequency are tabulated and displayed in standardized format for direct comparison of different infarcts. This method successfully displays the nature, sites, and extent of individual infarct types, illustrates the shifts in zonal frequency and lesion center that attend dual and triple infarcts, and clarifies the relationships among the diverse types of infarct.
对受单一大脑前动脉（A）、大脑后动脉（P）和大脑中动脉（M）、多支血管以及分水岭梗死影响的解剖区域进行频率分析，将揭示每种类型最常累及的特定部位（峰值区域）、多种不同类型最常损伤的部位（易损区域）以及两种或更多不同类型梗死相对频率相等的重叠部位（等频率区域）。我们采用了每个血管区域的精确界定。对50例大脑中动脉梗死、20例大脑前动脉-大脑中动脉梗死、3例大脑后动脉-大脑中动脉梗死以及30例矢状旁分水岭梗死的CT和MRI研究结果被映射到一个标准模板上。在梗死类型内部和之间分析每个区域的相对梗死频率，以确定每种梗死类型的中心和周边、易损区域以及等频率区域。然后将这些数据与之前对47例大脑前动脉、大脑后动脉、双侧大脑前动脉-大脑后动脉以及大脑前动脉-大脑后动脉-大脑中动脉梗死的分析结果进行关联。列出了大脑中动脉和分水岭梗死的区域频率数据、梗死频率峰值部位、对不同梗死的易损部位以及梗死频率相等的重叠部位，并以标准化格式显示，以便直接比较不同的梗死类型。该方法成功地展示了个体梗死类型的性质、部位和范围，说明了双梗死和三梗死时区域频率和病变中心的变化，并阐明了不同类型梗死之间的关系。
