Dr. James Thrall

PACS/VNA
MGH's Thrall reflects on 30 years in radiology
On February 1, Dr. James Thrall stepped down as chairman of the department of radiology at Massachusetts General Hospital (MGH), ending a 30-year career as one of the leading figures in radiology. In this exclusive article, Dr. Thrall reflects on the changes he's seen over the past 30 years in medical imaging.
February 25, 2013
2013 02 25 11 30 07 718 Thrall James 70
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Cuff occlusion paradigm shows the following: (a) Cross-sectional images of the femoral artery that were used to draw regions of interest before (rest) and after cuff occlusion (at three different time points) to determine flow mediated dilation; (b) Femoral vein oxygen saturation (SvO2) plotted vs time after cuff release. SvO2 is derived from the difference between venous and arterial signal phase. (Tw = washout time); and (c) Average blood flow velocity-time curve in the femoral artery. (HI = hyperemic index; Vp = peak velocity; Tp = time to peak velocity; TFF = time of forward flow)
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