For the diagnosis of intra- and retro-orbital processes, orbital phlebography occupies a key position whereas carotid arteriography visualizing the ophthalmic artery has only a limited diagnostic value for the assessment of absolute intra-orbital processes. Use of subtraction method and magnification technique brought essential improvement to the vessel representation of the orbit. Combination of these techniques in connection with computerized axial tomography (EMI-Scanner), as a rule, allows localization and identification of intraorbital space-occupying processes without difficulty.
对于眼眶内和眶后的病变诊断，眼眶静脉造影占据关键地位，而显示眼动脉的颈动脉造影对于评估绝对的眼眶内病变仅具有有限的诊断价值。减法法和放大技术的应用给眼眶血管显影带来了实质性的改善。通常，将这些技术与计算机断层扫描（EMI扫描仪）相结合，能够毫无困难地定位和识别眼眶内占位性病变。
