.webp&w=384&q=75){kind=logo}
Loading, please wait...
Loading, please wait...
Vessel-encoded arterial spin labeling (VEASL) allows for non-invasive imaging of multiple vascular territories simultaneously. While this technique is vital for cerebrovascular diagnostics, previous methods often faced significant signal-to-noise ratio (SNR) challenges. To overcome these hurdles, researchers developed the MOdulation-Guided ENcoding (MOGEN) scheme to enhance vessel-encoded ASL imaging. This approach exploits spatial modulation profiles to create a highly efficient encoding matrix. Consequently, it offers a more robust solution for mapping cerebral blood supply without contrast agents.
The MOGEN scheme demonstrates several advantages over previous encoding methods. In simulation studies, it achieved significantly higher SNR efficiency for four- and six-artery configurations. Clinical tests on healthy volunteers showed an in vivo SNR improvement of approximately 15%. Furthermore, the scheme provides robust vessel decoding, even when the spatial profile deviates from the expected cosine shape. Notably, in patients with Moyamoya disease, MOGEN enabled clear visualization of collateral pathways within five minutes. This efficiency is particularly beneficial in busy clinical settings in India, where scan time optimization is crucial.
Beyond SNR gains, MOGEN incorporates vessel size through multi-voxel representation. This feature improves single-artery selectivity, which is essential for accurate vascular territory mapping. Additionally, the scheme simplifies off-resonance correction for ultra-high field MRI applications. Therefore, MOGEN represents a substantial leap in the usability and reliability of VEASL. It provides a powerful tool for clinicians managing complex vascular pathologies and monitoring treatment responses.
MOGEN optimizes the encoding matrix by directly using spatial modulation profiles, which significantly increases signal-to-noise ratio (SNR) efficiency and improves vessel selectivity.
Yes, MOGEN effectively visualizes collateral pathways in Moyamoya patients, even when scan times are reduced to around five minutes for six major arteries.
Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.
References
Li H et al. MOdulation-Guided ENcoding (MOGEN) Scheme for Vessel-Encoded Arterial Spin Labeling. Magn Reson Med. 2026 Mar 07. doi: 10.1002/mrm.70335. PMID: 41795084.
Suzuki Y et al. Evaluation of the contribution of individual arteries to the cerebral blood supply in patients with Moyamoya angiopathy: comparison of vessel-encoded arterial spin labeling and digital subtraction angiography. Neuroradiology. 2024;66(5):737-746.
Read summarized clinical updates, watch expert medical content, and earn CME certifications right from your smartphone.
Open your smartphone camera to scan and install.
The MOGEN scheme enhances vessel-encoded ASL by boosting SNR efficiency and improving the visualization of collateral pathways in diseases like Moyamoya....
4 months ago
Andhra Pradesh reported 10 new Covid-19 cases, taking the state tally to 49 while deaths remain at four. With 24 patients hospitalized and 16 under home isolation, the Health Department has intensified monitoring. Medical professionals should review regional distribution, diagnostic protocols, and management plans.
Today
An 11-year Swedish registry study of 618 uterine sarcoma patients found that minimally invasive surgery yielded survival comparable to open surgery in early stages. However, adjuvant chemotherapy conferred no survival benefit in localized or advanced disease, highlighting stage and histology as key outcomes.
3 days back
A cross-sectional study evaluates post-intensive care syndrome in cardiac patients 2-4 weeks post-ICU discharge, highlighting cognitive, psychological, and functional impairments and the need for structured multidisciplinary rehabilitation.
3 days back
Anterior cruciate ligament reconstruction failure lacks uniform definition. A narrative review proposes an integrative framework incorporating objective and subjective instability, persistent pain, restricted motion, graft rupture, and secondary meniscal injury to standardize clinical reporting.
3 days back
With World Obesity Atlas data warning that over 41 million Indian children are overweight or obese, ICMR and NIN have unveiled a 10-point policy roadmap. The initiative calls for mandatory front-of-pack labeling, HFSS taxes, strict marketing bans, and healthier school environments to curb non-communicable diseases.
Today
