Q&A with Hongjiang Wei and Chunlei Liu

By Zahra Hosseini & Phillip Ward

Hongjiang Wei

Recently, we had the pleasure to sit down and have a chat with Dr. Hongjiang Wei and Dr. Chunlei Liu about their editor-selected manuscript entitled “Investigating Magnetic Susceptibility of Human Knee Joint at 7 Tesla.” The conversation took a technical turn right away, when we asked the authors about their chosen technique, quantitative susceptibility mapping (or QSM). Hongjiang explained that, “quantitative susceptibility mapping is an approach to, as the name implies, extract a map of the underlying tissue susceptibility on a pixel-by-pixel basis. QSM computes the magnetic susceptibility from the phase signal of gradient recalled echoes with the assumption that phase shift is mainly due to susceptibility induced field inhomogeneity.” In simple terms, it is a map that demonstrates how tissues interact with the magnetic field of the MRI scanner.

By |November 24th, 2017|Highlights-post, Highlights-QA|Comments Off on Q&A with Hongjiang Wei and Chunlei Liu

Q&A with David Reiter and Richard Spencer


Today we virtually sat down with David Reiter and Richard Spencer from the National Institute on Aging at the National Institutes of Health to talk about their recent publication entitled, ‘Anomalous T2 Relaxation in Normal and Degraded Cartilage’. This paper showed that the stretched exponential decay model reflects the microstructural complexity of cartilage matrix better than the conventional monoexponential decay model. Our conversation with David and Richard took us down a winding path filled with mathematics, modeling, MRI, and clinical translation, all towards, as Richard puts it, making cartilage great again.

By |September 9th, 2016|Highlights-post, Highlights-QA|Comments Off on Q&A with David Reiter and Richard Spencer