Detection of Cerebral Aneurysm by Performing Thresholding-Spatial Filtering-Thresholding Operations on Digital Subtraction Angiogram

2013 ◽  
pp. 915-921 ◽  
Author(s):  
Jubin Mitra ◽  
Abhijit Chandra
Keyword(s):  
Cerebral Aneurysm ◽  
Spatial Filtering ◽  
Digital Subtraction ◽  
Digital Subtraction Angiogram

Clinical and radiological outcomes of acute ischemic stroke patients without angiographic occlusion on digital subtraction angiogram. A pooled analysis of case series

2008 ◽  
Vol 50 (11) ◽  
pp. 963-968 ◽  
Author(s):  
Qaisar A. Shah ◽  
Muhammad Zeeshan Memon ◽  
Gabriela Vazquez ◽  
M. Fareed K. Suri ◽  
Haitham M. Hussein ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Case Series ◽  
Pooled Analysis ◽  
Digital Subtraction ◽  
Stroke Patients ◽  
Digital Subtraction Angiogram

Contribution of Digital Subtraction Angiogram in Diagnosis and Anatomic Recognition of Traumatic Pulsatile Mass

2020 ◽  
Vol 31 (4) ◽  
pp. e360-e362
Author(s):  
Wenxuan Zu ◽  
Yidi Xu ◽  
Jingyu Qian ◽  
Banghong Jiang ◽  
Li Zhang
Keyword(s):  
Digital Subtraction ◽  
Pulsatile Mass ◽  
Digital Subtraction Angiogram

scholarly journals Spontaneous Thrombosis of the Pseudoaneurysm of Right SCA after an Attempt at Embolisation

2002 ◽  
Vol 8 (2) ◽  
pp. 205-208 ◽  
Author(s):  
M. Szajner ◽  
T. Jargiello ◽  
T. Trojanowski ◽  
M. Szczerbo-Trojanowska
Keyword(s):  
Intracranial Aneurysms ◽  
Technical Problem ◽  
Distal Segment ◽  
Regional Hospital ◽  
Cerebellar Hemisphere ◽  
Digital Subtraction ◽  
Spontaneous Thrombosis ◽  
Main Trunk ◽  
Digital Subtraction Angiogram ◽  
The Right

Spontaneous thrombosis of intracranial aneurysms rare, mostly affecting giant aneurysms with narrow necks. We present the case of 34 y/o man with pseudoaneurysm that developed in the course of SAH. The initial CT scan showed an isolated, well-defined hematoma within the right cerebellar hemisphere, digital subtraction angiogram (DSA) performed in a regional hospital showed an irregular shaped aneurysm of the distal segment of the right SCA. The patient was sent to our department, where diagnostic DSA, performed before embolisation revealed an entirely different morphology of the aneurysm. It became larger, round and no other functional branches distal to it were found (picture of “a balloon on a string”). During supraselective catheterization, when microcatheter and microguidewire were already in the right SCA a technical problem of our angio-machine occurred, so the intervention had to be postponed. A week later, a second attempt at embolisation was made. This time an initial DSA showed a lack of filling of the aneurysm sac and thrombosis of the main trunk of the right SCA. The patient remained clinically stable. He was discharged from our hospital five days later.

scholarly journals Safety of Intraventricular rt-PA for Pan-Ventricular IVH Caused by a Ruptured AVM: A Case Report

2017 ◽  
Vol 7 (4) ◽  
pp. NP5-NP8 ◽  
Author(s):  
Sushrut Dharmadhikari ◽  
Ashutosh Mahapatra ◽  
Anita Tipirneni ◽  
Dileep Yavagal ◽  
Amer M. Malik
Keyword(s):  
Computed Tomography ◽  
Clinical Trials ◽  
Clinical Improvement ◽  
External Ventricular Drain ◽  
Recombinant Tissue Plasminogen Activator ◽  
Digital Subtraction ◽  
Sagittal Sinus ◽  
Left Lateral Ventricle ◽  
Ruptured Avm ◽  
Digital Subtraction Angiogram

Intraventricular recombinant tissue plasminogen activator (IVT rt-PA) has improved outcomes for intraventricular hemorrhage (IVH). Patients with suspected or untreated arteriovenous malformations (AVMs) have been excluded from clinical trials. We present a patient with IVH secondary to a ruptured AVM safely treated with IVT rt-PA. A 48-year-old Hispanic male with a history of dermatomyositis presented to the emergency department with sudden left-sided weakness. En route to computed tomography (CT), he became lethargic. Computed tomography revealed extensive IVH with acute hydrocephalus, which was treated with the placement of external ventricular drain with clinical improvement. Computed tomography angiogram performed did not reveal AVM. Cerebral digital subtraction angiogram (DSA) was planned due to suspicion of AVM. Prior to DSA, patient became acutely lethargic. Computed tomography imaging revealed worsening hydrocephalus. External ventricular drain was noted to be draining. Repeat CT revealed improved hydrocephalus but with left lateral ventricle dilatation. Risks and benefits of IVT rt-PA were discussed with the family and a decision was made to treat. Three doses of 1 mg IVT rt-PA were administered with resolution of midline blood and lateral ventricular dilatation with clinical improvement. Digital subtraction angiogram revealed early draining vein on right internal carotid artery injection draining into the inferior sagittal sinus representing ruptured AVM without clear nidus. Repeat DSA with possible embolization was planned after discharge. In spite of additional in-hospital complications, the patient gradually improved and was ultimately discharged home. Our case supports the idea that the use of IVT rt-PA following an IVH caused by an underlying AVM could be further explored in carefully designed clinical trials.

scholarly journals Digital Subtraction Angiogram Registration Method with Local Distortion Vectors to Decrease Motion Artifact

2001 ◽  
Vol 34 (3) ◽  
pp. 182-194 ◽  
Author(s):  
Kyoichi Hiroshima ◽  
Raiko Funakami ◽  
Kouichirou Hiratsuka ◽  
Junji Nishino ◽  
Tomohiro Odaka ◽  
...  
Keyword(s):  
Motion Artifact ◽  
Digital Subtraction ◽  
Registration Method ◽  
Local Distortion ◽  
Digital Subtraction Angiogram

A priori knowledge integration for the detection of cerebral aneurysm

2018 ◽  
Vol 63 (4) ◽  
pp. 445-452 ◽  
Author(s):  
Ines Rahmany ◽  
Nawres Khlifa
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Cerebral Aneurysm ◽  
System Architecture ◽  
Intracranial Aneurysms ◽  
Knowledge Integration ◽  
A Priori ◽  
A Priori Knowledge ◽  
Digital Subtraction ◽  
New Approach ◽  
Sources Of Knowledge

Abstract The detection of intracranial aneurysms is of a paramount effect in the prevention of cerebral subarachnoid hemorrhage. We propose in this paper, a new approach to detect cerebral aneurysm in digital subtraction angiography (DSA) images by fusing several sources of knowledge. After a brief description of a priori knowledge that the expert has provided about cerebral aneurysm, we propose a system architecture including fuzzy modeling and data fusion. The results on the studied cases are very promising.

scholarly journals Accuracy of Voxel-Based and Algebraic Formula-Based Methods in Quantifying Cerebral Aneurysm Volume by 3D-Rotational Digital Subtraction Angiography

2005 ◽  
Vol 11 (1) ◽  
pp. 35-40 ◽  
Author(s):  
N.F. Fanning ◽  
H.M. O'Dwyer ◽  
J.A.B. Bowden ◽  
P.R. Brennan ◽  
J. Thornton
Keyword(s):  
Digital Subtraction Angiography ◽  
Cerebral Aneurysm ◽  
In Vitro Study ◽  
Algebraic Methods ◽  
Digital Subtraction ◽  
True Aneurysm ◽  
Aneurysm Volume ◽  
Volume Method

Accurate knowledge of cerebral aneurysm volume would be valuable in guiding the volume of embolized material required for optimal filling of an aneurysm sac and recording percentage volume filling. Algebraic volumes are frequently estimated by algebraic volume formulae. 3D digital subtraction angiography (DSA) aids endovascular treatment planning and yields volumetric data. Our aim was to define the accuracy of 3D-DSA in quantifying aneurysm volume using an automated voxel-based volumetric method (voxel volume method) and compare results to volumes calculated by ellipsoid and cylindrical algebraic formulae (algebraic volume method). We constructed 13 latex aneurysm moulds and measured their true volumes using a micro-pipette in-vitro. 3D-DSA was performed on contrast filled moulds and experimental volume estimated by both voxel and algebraic methods. In our in-vivo study we quantified the voxel and algebraic volumes from the 3D data sets of 75 cerebral aneurysms. The linear regression test provided correction values between voxel and algebraic methods. The in-vitro study showed that the voxel volume method was the most accurate (mean percentage deviation from true volume 3.7 ± 3.5%; p = 0.9). The ellipsoid method significantly underestimated −11.2 ±13.6%; p<0.05) and the cylindrical method overestimated (42.6 ±35.7%; p<0.05) true aneurysm volume. Similar results were obtained in-vivo. While algebraic measurements could be corrected by an equation, the clinical usefulness of this equation is questionable due to the large volume range to achieve a 95% confidence interval. The voxel volume method is accurate in quantifying aneurysm volume. Aneurysms in-vivo do not conform to simple algebraic geometry. Aneurysm volume on 3D-DSA should be calculated by the voxel-based method and not by algebraic formulae.

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