Journal of neurointerventional surgery
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Thrombus characteristics, including Hounsfield unit (HU) value to measure density and thrombus volume and length, can predict successful recanalization following IV thrombolysis with recombinant tissue plasminogen activator. Conflicting and limited data exist regarding the value of assessing thrombus properties in acute stroke cases treated with endovascular IA approaches. ⋯ In acute stroke treated with Solitaire stent retriever thrombectomy, higher thrombus HU values are predictive of successful recanalization. Such information can be used in decision making when estimating recanalization success rate with different endovascular treatment approaches.
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DSA remains the gold standard imaging method for the evaluation of many cerebrovascular disorders, in particular cerebral aneurysms and vascular malformations. The purpose of this study was to demonstrate the effect of modifying DSA frame rate, fluoroscopic and roadmap pulse rates, and flat panel detector (FPD) position on the radiation dose delivered during routine views for a cerebral angiogram in a phantom model. ⋯ Replacing femoral arterial access evaluations by DSA with fluoroscopy, utilizing lower pulse rates during fluoroscopy and roadmap guidance, and choosing variable frame rates for DSA are simple techniques that may be considered by operators in their clinical practices to lower radiation dose during cerebral angiography procedures.