Zoe Brady, PhD

Clinical News
Standing on the outside lookin' in: X-rays through glass
A multidisciplinary Australian team is investigating a technique for taking chest x-rays through glass. It allows the x-ray unit to remain outside an isolated patient's room -- conserving personal protective equipment, reducing radiographer risk, speeding up the process, and strengthening defense against COVID-19, writes Zoe Brady, PhD.
August 3, 2020
2020 08 03 21 18 4648 2020 08 04 Brady Fig 14 20200803211932 20200803221429
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Example case from test set with biparametric MRI data, reference segmentation, and output from AI system. The primary MRI assessment resulted in a PI-RADS 5 lesion in the left dorsal part of the peripheral zone and a PI-RADS 4 lesion in the right dorsal part of the peripheral zone (PSA of 11.6 μg/L). Targeted biopsies from both areas showed ISUP-grade 3. All images are from the same slice location, showing a part of both lesions. A T2-weighted (T2W) image. B Diffusion-weighted image with a b-value of 1,500 s/mm2. (C) Apparent diffusion coefficient map. (D) Reference segmentation with white areas representing tumor. (E) Softmax output from AI system. Inset in the lower left corner shows the detection map (cropped around the prostate) with red voxels representing softmax values of 0.99 and yellow voxels representing softmax values of 0.59. (F) T2W image with reference (D) and detection map (inset in E) overlayed, green represents areas in which both the reference and the AI output are positive (true positive voxels for AI), red only positive in reference (false-negative voxels for AI) and blue only segmented by AI (false-positive voxels for AI).
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