Advanced Diagnostic & Interventional Radiology Research Center | Embolization of Intracranial Arteriovenous Malformations ONYX

Advanced Diagnostic & Interventional Radiology Research Center | Embolization of Intracranial Arteriovenous Malformations ONYX
| Jan 2 2026
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Advanced Diagnostic & Interventional Radiology Research Center

COVID-19 pandemic 

During the COVID-19 pandemic, the Radiology Research Center at Tehran University of Medical Sciences continued its research activities despite the challenges posed by the increased demand for CT scans of COVID-19 patients and the necessity of adhering to strict health protocols. This center played a crucial role in improving medical imaging techniques, optimizing diagnostic protocols, and advancing technologies related to CT scan image analysis.

Faculty members, researchers, and staff remained committed to ensuring the safety and well-being of healthcare professionals and patients while actively engaging in imaging data analysis, developing artificial intelligence algorithms for faster disease detection, publishing scientific articles, and presenting their findings at international conferences. These efforts aimed to enhance diagnostic accuracy, improve treatment processes, and alleviate pressure on healthcare systems.

 

Key achievements of the Radiology Research Center during the COVID-19 pandemic include:


✔️ Development and optimization of lung imaging protocols for faster and more accurate COVID-19 diagnosis
✔️ Implementation of artificial intelligence technologies for automated CT scan analysis and reduced diagnosis time
✔️ Publication of high-impact research articles on innovative imaging methods for COVID-19 patients
✔️ Participation in national and international projects focused on COVID-19 diagnosis and patient management

The center remains dedicated to advancing research in medical imaging and continues to contribute as a leading scientific institution in improving the quality of diagnostic and therapeutic services.

 

Some of the center's significant achievements during the pandemic include:

 

  • Release Date : Mar 17 2024 - 13:43
  • : 44
  • Study time : 1 minute(s)

Embolization of Intracranial Arteriovenous Malformations Using Onyx in 53 Patients

Embolization of Intracranial Arteriovenous Malformations Using Onyx {faces}

Background:

Endovascular embolization is one of the main modalities in the treatment of brain arteriovenous malformations (AVMs). Onyx (ethylene-vinyl alcohol copolymer) is a new embolic agent with some advantages of slow injection and better control of penetrat

Objectives:

To report our experience in the embolization of brain AVMs with Onyx.

Patients and Methods:

From August 2012 to October 2014, 53 consecutive patients harboring brain AVM were treated with Onyx as the sole embolic agent during 85 procedures. There were 27 males and 26 females with a mean age of 27.2 years (range, 8 - 65 years).

Results:

The presenting symptom was headache in 25 (47%), neurological deficit in 18 (35%), and seizure in ten (18%) patients. According to the Spetzler-Martin grading scale, three of the AVMs were ranked as grades I, 11 as grade II, 22 as grade III, 14 as grade IV, and three as grade V. An average of 1.8 feeding pedicles were embolized in each case, whereas a mean of 2.23-mL Onyx was used per patient. Initial complete obliteration at the end of all embolization procedures was achieved in 11 patients (20.08%). The rate of complete embolization at 6-month follow-up was 15%. After completion of embolization, the neurologic status was unchanged or improved in 46 (87%) patients. We observed treatment-related neurologic deficit in seven (13%) patients, of whom five were permanent (10%). There was no procedure-related death.

Conclusion:

Our experience with Onyx used for embolizing AVMs was satisfactory. Controlled injections that protect the draining veins make the therapy safe even in complex AVMs.
  • Article_DOI : doi.org/10.5812/iranjradiol.37696
  • Author(s) : ahmad aoude,morteza faghih jouibari
  • News Group : research,research article,avm
  • News Code : 278418
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