Owen Tang

CT
China's medical device market shows promise despite slowdown
The market for medical devices in China still has great potential despite a recent slowdown in the segment's growth rate, according to a new report by China MedTech Marketing (CMTM). In this article, CMTM's Owen Tang explains how a projected decline in the growth rate isn't expected to dampen enthusiasm for medical devices, due to a variety of factors.
October 18, 2016
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CT
Imaging vendors target China's rural healthcare market
As China rushes to modernize its healthcare system, big cities such as Beijing and Shanghai have attracted most of the attention. But medical imaging vendors are now moving into China's vast countryside. Owen Tang of ChinaBionews offers a look at China's new frontier for growth.
February 6, 2013
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By Kate Madden Yee
The findings highlight the need for systematic dose tracking and rigorous justification of imaging.
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Study questions routine use of radiotherapy after bone surgery
By Will Morton
Findings suggest a possible hazard associated with postoperative radiotherapy.
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CEUS outshines color Doppler imaging for indeterminate kidney lesions
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Chest x-rays reveal atherosclerosis in patients undergoing amputations
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Lower limb amputation is an increasingly common major complication of advanced peripheral arterial disease and diabetes mellitus.
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Cardiac Mri Adobe Samunella
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Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
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Axial contrast-enhanced CT scan in a 28-year-old premenopausal woman shows an incidentally detected solid-appearing left ovarian lesion (solid arrow) anterior to the uterus (U), associated with trace ascites in the right adnexa and cul de sac (dashed arrows). At pathologic analysis, this was shown to be ovarian dysgerminoma. Two readers misdiagnosed this lesion, one as a leiomyoma and one as an ovarian fibroma.
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Erin Stephens
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Images from two representative cases. (A-C) Images in an 82-year-old man with a calcified plaque in the proximal segment of the left anterior descending artery. (A, B) Curved planar reconstruction images from CCTA with (A) hybrid iterative reconstruction (HIR) and (B) super-resolution deep learning reconstruction (SR-DLR) show that the measured PDS was 66% for the HIR image and 42% for the SR-DLR image. (C) Quantitative analysis of the invasive coronary angiography (ICA) image (reference standard) revealed a PDS of 34% (arrow). (D-F) Images in a 37-year-old woman with a noncalcified plaque in the middle segment of the left circumflex artery. (D, E) Curved planar reconstruction images from CCTA with (D) HIR and (E) SR-DLR show that the measured PDS was 47% for the HIR image and 80% for the SR-DLR image. (F) Quantitative analysis of the ICA image revealed a PDS of 72% (arrow). Blue, red, and yellow lines in A, B, D, and E represent the proximal reference point, stenosed lesion, and distal reference point, respectively, and the insets show the corresponding cross-sectional images.
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