Plane wave ultrasound and OCT angiography of the eye in preeclampsia

This study involves examination of ocular blood flow in human subjects in preeclampsia (PE). Both eyes were examined by plane-wave ultrasound and by optical coherence angiography (OCTA) within 72 hours of delivery.  Ultrasound Doppler was used to assess flow velocity and resistance in the central retinal artery and vein, the short posterior ciliary arteries and the choroid.  OCTA was used to assess vascular density in the superficial and deep retina and the choriocapillaris.  Analysis included correlation with blood pressure, assessment of differences between normal and PE and correlation of ultrasound Doppler with OCTA vascular density., After informed consent, patients were examined at the Harkness Eye Institute within approximately  72 hours of delivery. Ultrasound and OCTA were collected within an hour of each other., , These files can be read using IBM SPSS.
Variables are as follows:

* ID: (random number)
* Race: (0=white, 1=black, 2=hispanic, 3=asian, 4=other)
* TimeFromDelivery: Hours
* DIAG: 0= control, 1=mild PE, 2= severe PE, 3= hypertension
* Systolic: BP
* Diastolic: BP
* MAP: Mean arterial BP
* HRate: BPM at time of BP measurement
* BPM: at time of exam
* Eye: 0=right, 1=left
* ChVmax: choroidal systolic mm/sec
* ChVmin: diastolic
* ChVmean: mean velocity
* ChRi: resistive index
* ChPI: pulsatility index
* CRAVmax: central retinal artery systolic velocity
* CRAVmin: diastolic
* CRAVmean: mean velocity
* CRARI: resistive index
* CRAPI: pulsatile index
* CRVVmax: central retinal vein systolic velocity
* CRVVmin: Diastolic
* CRVVmean: mean velocity
* CRVRI: resistive index
* CRVPI: pulsatility index
* vd\_mac\_ST: vascular density superotemporal to macular
* vd\_mac\_SN: superonasal
* vd\_mac\_IT: inferotemporal
* vd\_mac\_IN: inferonasal
* vd\_mac: mean
* vd\_onh\_ST: vascular density superotem...

本研究旨在探讨子痫前期（preeclampsia, PE）患者的眼部血流状态。研究对象为产妇，于分娩后72小时内分别采用平面波超声与光学相干血管造影（optical coherence angiography, OCTA）对双眼进行检查。使用超声多普勒评估视网膜中央动静脉、睫状后短动脉以及脉络膜的血流速度与阻力；采用OCTA检测视网膜浅层、深层以及脉络膜毛细血管的血管密度。分析内容包括与血压的相关性分析、正常对照组与子痫前期组的差异对比，以及超声多普勒检测指标与OCTA血管密度的相关性分析。
所有受试者在签署知情同意书后，于分娩后约72小时内在哈克尼斯眼科研究所（Harkness Eye Institute）接受检查，超声与OCTA两项检查的间隔时间不超过1小时。

本数据集文件可通过IBM SPSS软件读取。
变量说明如下：
* ID：随机编号
* Race：种族（0=白人，1=黑人，2=西班牙裔，3=亚裔，4=其他）
* TimeFromDelivery：分娩后时长（小时）
* DIAG：诊断分组（0=对照组，1=轻度子痫前期，2=重度子痫前期，3=高血压）
* Systolic：收缩压
* Diastolic：舒张压
* MAP：平均动脉压
* HRate：血压测量时的心率（次/分钟）
* BPM：检查时的心率（次/分钟）
* Eye：眼别（0=右眼，1=左眼）
* ChVmax：脉络膜收缩期峰值流速（mm/sec）
* ChVmin：脉络膜舒张末期流速
* ChVmean：脉络膜平均流速
* ChRi：阻力指数（resistive index）
* ChPI：搏动指数（pulsatility index）
* CRAVmax：视网膜中央动脉收缩期峰值流速
* CRAVmin：视网膜中央动脉舒张末期流速
* CRAVmean：视网膜中央动脉平均流速
* CRARI：视网膜中央动脉阻力指数
* CRAPI：视网膜中央动脉搏动指数
* CRVVmax：视网膜中央静脉收缩期峰值流速
* CRVVmin：视网膜中央静脉舒张末期流速
* CRVVmean：视网膜中央静脉平均流速
* CRVRI：视网膜中央静脉阻力指数
* CRVPI：视网膜中央静脉搏动指数
* vd_mac_ST：黄斑颞上区血管密度
* vd_mac_SN：黄斑鼻上区血管密度
* vd_mac_IT：黄斑颞下区血管密度
* vd_mac_IN：黄斑鼻下区血管密度
* vd_mac：黄斑区平均血管密度
* vd_onh_ST：视盘颞上区血管密度（原文标注未完整）