MR Digital Subtraction Angiography for the Assessment of Cranial Arteriovenous Malformations and Fistulas

2000 ◽  
Vol 175 (2) ◽  
pp. 451-453 ◽  
Author(s):  
Shigeki Aoki ◽  
Takeharu Yoshikawa ◽  
Masaaki Hori ◽  
Atsushi Nanbu ◽  
Hiroshi Kumagai ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Digital Subtraction

Delayed Venous Drainage in Ruptured Arteriovenous Malformations Based on Quantitative Color-Coded Digital Subtraction Angiography

2017 ◽  
Vol 104 ◽  
pp. 619-627 ◽  
Author(s):  
Jan-Karl Burkhardt ◽  
Xiaolin Chen ◽  
Ethan A. Winkler ◽  
Daniel L. Cooke ◽  
Helen Kim ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Venous Drainage ◽  
Digital Subtraction

Abstract 158: Magnetic Resonance Digital Subtraction Angiography Identifies Impaired Drainage in Arteriovenous Malformations With History of Rupture

Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Justin E Vranic ◽  
Parmede Vakil ◽  
Sameer A Ansari ◽  
Hunt H Batjer ◽  
Bernard R Bendok ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Incidental Finding ◽  
Whole Body ◽  
Digital Subtraction ◽  
Focal Neurological Deficit ◽  
History Of ◽  
Vein Yellow ◽  
The Mean ◽  
Time Density

BACKGROUND: Cerebral digital subtraction angiography (DSA) has established impaired hemodynamic drainage of intracranial arteriovenous malformations (iAVM) as a risk factor for iAVM hemorrhage. Unlike conventional DSA, MR-DSA offers a noninvasive means of characterizing iAVM hemodynamics. We hypothesize that MR-DSA will demonstrate impaired drainage in iAVMs with history of rupture when compared to iAVMs without history of rupture. METHODS: Consecutive patients with untreated, DSA-confirmed iAVM underwent MR-DSA on a 3T Whole-body MR-scanner. For each iAVM, regions of interest (ROI) were drawn on all feeder arteries and draining veins. Time-density curves were constructed for each ROI. The arteriovenous malformation transit time (ATT) was defined for each ROI as the time between contrast arrival and peak intravascular contrast density on the MR time-density curve. The drainage of each iAVM was characterized by the ratio of the draining vein ATT to the mean feeder artery ATT. The ATT ratio was compared between iAVMs with history of hemorrhage and those without. Statistical analysis was performed using a Student’s unpaired t-test with p <0.05 defined as statistically significant. RESULTS: From May 2011 to April 2012, 13 patients (7M:6F, 40.6±13.8 years old) were enrolled in our study, with 3 patients presenting with history of hemorrhage and the remainder presenting with history of seizure, focal neurological deficit, headache, or as an incidental finding. The ATT ratio was significantly higher in iAVMs with history of hemorrhage than in those without (1.17±0.06 vs 0.95±0.02, p <2.9E-7). CONCLUSION: MR-DSA identifies impaired drainage in iAVMs with history of rupture without exposing patients to the procedural risks and ionizing radiation associated with cerebral DSA. FIGURE A: MR-DSA with feeder artery (red) and draining vein (yellow) labeled. FIGURE B: Time-density curves of the artery (red) and vein (yellow) from which vessel ATTs were derived.

scholarly journals Angioembolization of Scrotal Arteriovenous Malformations: A Case Report and Literature Review

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Ammar Mohammad ◽  
Wael Sahyouni ◽  
Taisser Almeree ◽  
Bayan Alsaid
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Literature Review ◽  
Digital Subtraction Angiography ◽  
Acute Pain ◽  
Arteriovenous Malformations ◽  
Duplex Ultrasound ◽  
Digital Subtraction ◽  
Acute Bleeding ◽  
Scrotal Mass

Arteriovenous malformations (AVMs) of the scrotum are rare lesions, usually diagnosed incidentally during the evaluation of scrotal masses or infertility. It could be presented with acute bleeding or acute pain. We are presenting a case of painless bilateral infiltrated scrotal mass (more advanced in the left side) developed dramatically over a year, no other symptoms existed. The diagnosis was made using duplex ultrasound (DUS), computed tomography arteriography (CTA), and digital subtraction angiography (DSA). Three sessions of angioembolization were performed and followed by surgical resection of the left side of the scrotum.

COLOR INTENSITY PROJECTION OF DIGITALLY SUBTRACTED ANGIOGRAPHY FOR THE VISUALIZATION OF BRAIN ARTERIOVENOUS MALFORMATIONS

Neurosurgery ◽  
2007 ◽  
Vol 60 (3) ◽  
pp. 511-515 ◽  
Author(s):  
Keith S. Cover ◽  
Frank J. Lagerwaard ◽  
René van den Berg ◽  
Dennis R. Buis ◽  
Ben J. Slotman
Keyword(s):  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Color Image ◽  
Circulatory System ◽  
New Method ◽  
Digital Subtraction ◽  
Color Intensity ◽  
Clinical Value ◽  
Projection Images ◽  
Grayscale Images

Abstract OBJECTIVE Reliable and rapid delineation of arteriovenous malformations enables the application of effective treatments such as stereotactic radiosurgery. We describe a new method to improve the speed and reliability of visualizing the flow of contrast images with digital subtraction angiography. METHODS In line with current practices, digital subtraction angiography was used to produce a sequence of grayscale images. The new method combines the standard grayscale images produced by digital subtraction angiography into a single composite color image that encodes the contrast arrival time at each point of the brain's circulatory system. The algorithm is simple, fast, and easy to implement. RESULTS The technique allows the flow of contrast from a series of angiography images to be summarized in a single color image. CONCLUSION This visualization method promises to improve the speed of manual delineation of arteriovenous malformations. Further studies are required to evaluate the clinical value of the use of color intensity projection images, supplemented by grayscale images as necessary, in comparison with contouring on grayscale images only.

Limitations of fetal ultrasonography and magnetic resonance imaging in prenatal diagnosis of congenital cerebral arteriovenous malformations with hemorrhagic onset

2012 ◽  
Vol 10 (2) ◽  
pp. 154-158 ◽  
Author(s):  
Seiichiro Eguchi ◽  
Yasuo Aihara ◽  
Kohji Yamaguchi ◽  
Yoshikazu Okada
Keyword(s):  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Early Stage ◽  
Digital Subtraction ◽  
Fetal Ultrasonography ◽  
Delayed Treatment ◽  
Young Infants ◽  
Intracystic Hemorrhage ◽  
Patient Prognosis ◽  
The Right

A fetus at 30 gestational weeks was observed on fetal ultrasonography to have a dilated right lateral ventricle. After delivery, the entity was diagnosed as a prenatal intracerebral hemorrhage (ICH) due to a ruptured arteriovenous malformation (AVM). Ultrasonography and MRI examinations performed before birth indicated a cerebral aneurysm in the territory of the right middle cerebral artery. However, digital subtraction angiography revealed an intracystic hemorrhage due to a ruptured cerebral AVM. Arteriovenous malformations in children are rare, difficult to diagnose, and result in permanent sequelae after delayed treatment. Patient prognosis depends on early and accurate diagnosis and intervention. Outcomes can be improved if an AVM in a child is detected at the onset of ICH for young infants in the prenatal or early postnatal periods. Early AVM diagnosis is limited to fetal ultrasonography and MRI, and special consideration through invasive examination including neonatal digital subtraction angiography is urged unless a correct and clear diagnosis is made at an early stage. Prenatal ICH due to an AVM is rare. The authors discuss their observations and findings.

scholarly journals Clinical and Radiation Diagnosisof Renal Arteriovenous Malformation

2017 ◽  
pp. 53-61
Author(s):  
A. N. Askerova
Keyword(s):  
Arteriovenous Malformation ◽  
Digital Subtraction Angiography ◽  
Arteriovenous Malformations ◽  
Multidetector Ct ◽  
Accurate Information ◽  
Digital Subtraction ◽  
Ct Scanner ◽  
Medical Systems ◽  
Iodinated Contrast ◽  
Renal Arteriovenous Malformation

Purpose:to analyze the results of preoperative diagnosis and treatment of patients with renal arteriovenous malformation and compare them with the literature data.Materials and methods.5 patients with renal arteriovenous malformations were examined for the period from 2014 to2016 in the FSBI "A.V. Vishnevsky Institute of Surgery» MH RF, where simultaneously there are clinical departments of urology and vascular surgery, 4 of them were treated. All patients were female. The mean age was 31.8 ± 6.7 years (24–41 years). Ultrasound was done to all the patients in B-mode followed by a duplex scan using an abdominal 2–4 MHz convex. MDCT was performed in 4 patients out of 5. Patients underwent multiphase examination on a multidetector CT-scanner Philips Brilliance iCT-256 and Brilliance CT-64 (Philips Medical Systems (Cleveland) with the 120 kV and 100 kV protocols and an intravenous injection of the iodinated contrast agent. Digital subtraction angiography was performed in 3 patients.Results.One-sided lesion occurred in four cases (3 of them (60%) right-sided and 1 (20%) left-sided), in one patient (20%) arteriovenous malformation was bilateral As a result of the analysis of our own material and literature data, the diagnostic criteria of renal arteriovenous malformations according to ultrasound, MDCT and digital subtraction angiography were studied in detail. The results of the examinations of 5 patients with demonstration of ultrasound, MDCT and angiographic images are presented with the visualization of the characteristic features of renal AVM. In addition, the treatment options for such patients with the possibility of preserving the kidney are described.Conclusion.Duplex scanning is an effective method of diagnosis and postoperative follow-up of patients with renal arteriovenous malformations. Preoperative computed tomography and selective digital subtraction angiography provide accurate information about the renal angioarchitectonics and AV-shunts for choosing the treatment tactics and planning the surgical intervention. 

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