A two-dimensional (2D) spoiled gradient echo pulse sequence is typically used for 2D time-of-flight (TOF) MR angiography (MRA). Slices are acquired sequentially, in a single slice mode, one slice at a time. A short repetition time (TR) is employed together with a high flip angle. This...
Time-of-Flight (TOF) MRAHow does time-of-flight MRA work? For at least the first two decades of MRI, time-of-flight (TOF) MRA was the dominant non-contrast bright-blood method for imaging the human vascular system. Although now supplanted in body MR imaging by other techniques, it ...
摘要: Recently, time-of-flight (TOF) and gadolinium-enhanced MR angiography (MRA) imaging have been used to demonstrate subacute intramural hematoma in cervical artery dissection and to detect intraplaque h关键词:Deep venous sinus thrombosis MR angiography TOF Time-of-flight ...
Time of Flight Angiography in MRI Technology +Angiography +Circle of Willis +Contrast Enhanced Magnetic Resonance Angiography +Flow
Time‐of‐flight MR angiography with Gd‐DTPA hexamethylene diamine co‐polymer blood pool contrast agent: Comparison of enhanced MRA and conventional angi... Purpose To develop an accelerated 3D intracranial time‐of‐flight (TOF) magnetic resonance angiography (MRA) sequence with wave‐encoding (ref...
The 3D Time-of-Flight (TOF) MRA technique is a commonly used non-invasive imaging technique for exploration of the vascular anatomy. Several clinical applications require exact cerebrovascular segmentations from this image sequence. For this purpose, intensity-based segmentation approaches are widely ...
Time-of-flight, the most commonly used angiographic sequence, relies on the inflow of bright, relaxed blood into a region whose magnetization is suppressed by radiofrequency pulses. Good angiographic contrast relies on pulse rates (i. e., repetition times) that are fast enough and pulse amplitude...
Evaluation of Time-of-Flight and Phase-Contrast Mra Sequences at 1.0 T for Diagnosis of Carotid Artery DiseaseI. A phantom and volunteer study Purpose and Material: The aim of this work was, firstly, to compare different manufacturer-provided MRA sequences in a 1.0 T MR unit, with respect...
Acute, isolated intracranial dissection (ICD) represents a rare and challenging cause of acute stroke. DSA is considered to be the gold standard imaging modality in patients with ICD. The role of novel, high-resolution (HR) compressed-sensing (CS) time-of-flight (TOF) MRA techniques in ICDs...
摘要: 本文选取200例患者接受脑三维时间飞跃法MR血管成像(three-dimensional time of flight MRA, 3D-TOF MRA)检查,分析研究眼动脉变异,现报道如下. 关键词: 眼动脉 解剖学 脑膜中动脉 磁共振血管造影术 收稿时间: 2009-04-09 修稿时间: 2009-09-05...