Plane wave ultrasound and OCT angiography of the eye in preeclampsia
Data files
Nov 08, 2023 version files 52.50 KB
Abstract
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.
README
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 superotemporal to optic nerve
- vd_onh_SN: superonasal
- vd_onh_IT: inferotemporal
- vd_onh_IN: inferonasal
- vd_onh: in optic nerve region
- scale_mm: scan width, height in mm
- FAZ_cnt: foveal avascular zone pixels
- FAZ_mm2: mm2
- Thick: choroidal thickness
- vd_chorio_auto: automatically determine vascular density from choriocapillaris
- vd_chorio_man: manually determined
- vd_deep_ST: Deep retina superotemporal
- vd_deep_SN: superonasal
- vd_deep_IT: inferotemporal
- vd_deep_IN: inferonasal
- vd_deep: deep mean
- CentRetThick: central retinal thickness
- ChoroidThick: choroidal thickness
- NasRetThick: nasal retinal thickness
- TempRetThick: temporal retinal thickness
- VD.5_chorio: vascular density choriocapillaris 1 mm diam around macula
- FLOW.5_chorio: flow
- VD.5_deep: deep retina vascular density
- FLOW.5_deep: flow
- VS.5_sup: superficial retina
- FLOW.5_sup: flow
- FAV3x3: avacular zone from 3x3 image
- FAV3x3mm2: mm2
- VDchor: choroid VD
- FlowChor: flow
- VDdeep: deep retina VD
- FlowDeep: flow
- VDsup: superficial retina
- FlowSup: flow
- FAZ3x3:
- FAZ3x3mm2
- VDsup_corrected
Missing values are represented by an '.' which is the standard in SPSS. Data may be missing for several reasons, including:
exam not performed, poor quality or ambiguous data, or in the case of Doppler, a particular vessel was not visualized.
Methods
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.