FLIGHT MR-ANGIOGRAPHY
Time of Flight MR Angiography of Carotid Artery Stenosis: Does a Flow Void Represent Severe Stenosis?
... From January 1997 to November 2000, 390 consecutive patients with carotid artery stenosis at DUS and scheduled to undergo DSA before possible carotid endarterectomy were included in the prospective diagnostic study (296 ...
6
Cavernous Sinus and Inferior Petrosal Sinus Flow Signal on Three Dimensional Time of Flight MR Angiography
... (TOF) MR angiograms obtained on two different imaging units (scanners A and B) were reviewed with attention to presence of venous flow signal in the cavernous sinus or inferior petrosal sinus or ...additional ...
6
Contrast Enhanced MR Angiography Is Not More Accurate Than Unenhanced 2D Time of Flight MR Angiography for Determining ≥70% Internal Carotid Artery Stenosis
... The literature often characterizes DUS data as operator-dependent and cautions against using DUS as the sole perioperative imaging study.9,43 Although there is still ongoing controversy [r] ...
8
Intraplaque High Intensity Signal on 3D Time of Flight MR Angiography Is Strongly Associated with Symptomatic Carotid Artery Stenosis
... Our study demonstrates an association between IHIS, a potential marker of IPH, determined from routinely acquired 3D-TOF MRA source images and ischemic events. Specifically, our data suggest that patients with ...
5
Clinical Evaluation of Highly Accelerated Compressed Sensing Time of Flight MR Angiography for Intracranial Arterial Stenosis
... All the images were obtained with a Magnetom Skyra 3T MR imaging scanner (Siemens, Erlangen, Germany) using a 20-chan- nel head-neck coil. A research sequence and reconstruction pro- totype provided by Siemens ...
6
Diagnostic Accuracy of 3D Time of Flight MR Angiography Compared with Digital Subtraction Angiography for Follow Up of Coiled Intracranial Aneurysms: Influence of Aneurysm Size
... MRA, MR source images and 3D maximum intensity projection (MIP) were viewed on an independent workstation (Sparc 10 CT/MR, Sienet MagicView 1100; ...subtracted MR angiographic images were displayed ...
7
Three dimensional time of flight MR angiography in the evaluation of intracranial aneurysms treated by endovascular balloon occlusion
... E, Lateral MRA reprojected view of the left internal carotid artery shows residual aneurysm lumen open arrows projecting anteriorly just distal to origin of a faintly visualized ophthalm[r] ...
8
Three dimensional Time of Flight MR Angiography in the Evaluation of Intracranial Aneurysms Treated with Guglielmi Detachable Coils
... Finally, we analyzed whether a signal pile-up de- fect in MIP reconstruction could have produced the artifacts seen in the seven cases. Examination of the single source images did not add any infor- mation to the MIP ...
7
Diagnosis of carotid artery stenosis: comparison of 2DFT time of flight MR angiography with contrast angiography in 50 patients
... We used a 20FT time-of-flight technique to study patients with suspected carotid artery disease and compared the results with those obtained by using intraarterial contrast angiography t[r] ...
6
The Predictive Value of 3D Time of Flight MR Angiography in Assessment of Brain Arteriovenous Malformation Obliteration after Radiosurgery
... Meanwhile MRA is an excellent and low-invasive imaging technique to follow the process of progressive obliteration. On the basis of our findings, we did not change our follow-up protocol, though presently we are using ...
7
Follow Up of Coiled Cerebral Aneurysms at 3T: Comparison of 3D Time of Flight MR Angiography and Contrast Enhanced MR Angiography
... therapy, MR angiog- raphy (MRA) has emerged as the technique of choice at most ...subtraction angiography (DSA) include minimal invasiveness with no as- sociated risk of neurologic complications, reduced ...
7
Acetazolamide challenge for three dimensional time of flight MR angiography of the brain
... CONCLUSIONS: Acetazolamide improves visualization of small peripheral intracranial arteries and sensitivity in detecting atherosclerotic stenosis in the main trunk of major cerebral arte[r] ...
7
Intracranial vascular stenosis and occlusion: MR angiographic findings
... time-of-flight MR angiography improves the detection of intracranial vascular stenosis and occlusion if added to maximum-intensity projection (MIP) ...had MR angiography for evaluation ...
9
Aneurysms of the Anterior Communicating Artery Treated with Guglielmi Detachable Coils: Follow Up with Contrast Enhanced MR Angiography
... subtraction angiography (DSA) remains the technique of choice, but this method is relatively invasive and poses a risk of neurologic ...CT angiography with three-dimensional (3D) reconstructions has been ...
7
Anatomic evaluation of the circle of Willis: MR angiography versus intraarterial digital subtraction angiography
... The findings from 62 patients (40 male, 22 female) who underwent both intraarterial DSA and 3-D time-of-flight MR angiography were reviewed retrospectively to ascer- tain the presence of the arterial ...
5
Whole-body MRI and MRA for evaluation of the prevalence of atherosclerosis in a cohort of subjectively healthy individuals
... same MR protocol showed not only good routine appli- cability, but could also confirm pathological findings on MRI/MRA by further diagnostic measures on a case-to- case basis ...substraction angiography ...
9
CT angiography in the evaluation of acute stroke
... using MR angiography and MR imaging with hemody- namic and diffusion-weighted pulse sequences in the work-up of patients with acute stroke (37, ...CT angiography in the acute setting. Imaging ...
10
Prospective Evaluation of Carotid Artery Stenosis: Elliptic Centric Contrast Enhanced MR Angiography and Spiral CT Angiography Compared with Digital Subtraction Angiography
... CT angiography in the assessment of narrowing of the lumen of the extracra- nial carotid artery bifurcation, and CT angiography has already been shown to be sensitive and specific in the evaluation of ...
8
MR imaging and MR angiography in the evaluation of pulsatile tinnitus
... The spectrum of lesions detected included dural arteriovenous fistula nine, extracranial arteriovenous fistula three, paraganglioma five, jugular bulb variants three, aberrant internal c[r] ...
11
CT Angiography and MR Angiography in the Evaluation of Carotid Cavernous Sinus Fistula Prior to Embolization: A Comparison of Techniques
... MR imaging was performed by using GE 1.5T Signa (Mil- waukee, WI) or Siemens 1.5T (Erlangen, Germany) Sonata MR scanners. First, routine T1-weighted (500 – 600/12–20/1 [TR/TE/excitations]) and T2-weighted ...
8