آدرس کانال:
دسته بندی ها:
سلامتی
زبان: فارسی
کشور: ایران
مشترکین:
4.65K
توضیحات از کانال
cardiology is a world
ارتباط مستقیم با ادمین علمی :
@cardiogroup
ارتباط مستقیم با مسئول روابط عمومی :
@chairman1
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آخرین پیام ها 9
2022-01-02 09:20:12
140 views06:20
2021-12-23 22:39:01
@cardiology_channel
We have used phase-contrast X-ray tomography to characterize the three-dimensional (3d) structure of cardiac tissue from patients who succumbed to Covid-19. By extending conventional histopathological examination by a third dimension, the delicate pathological changes of the vascular system of severe Covid-19 progressions can be analyzed, fully quantified and compared to other types of viral myocarditis and controls. To this end, cardiac samples with a cross section of 3:5mm were scanned at a laboratory setup as well as at a parallel beam setup at a synchrotron radiation facility. The vascular network was segmented by a deep learning architecture suitable for 3d datasets (V-net), trained by sparse manual annotations. Pathological alterations of vessels, concerning the variation of diameters and the amount of small holes, were observed, indicative of elevated occurrence of intussusceptive angiogenesis, also confirmed by high resolution cone beam X-ray tomography and scanning electron microscopy. Furthermore, we implemented a fully automated analysis of the tissue structure in form of shape measures based on the structure tensor. The corresponding distributions show that the histopathology of Covid-19 differs from both influenza and typical coxsackie virus myocarditis.
109 views19:39
2021-12-23 22:38:28
https://elifesciences.org/articles/71359
105 views19:38
2021-12-23 22:36:36
https://elifesciences.org/articles/71359
111 views19:36
2021-12-12 07:50:00
https://www.skyroom.online/ch/primary_pci_1400/primary-pci-webinar-1400
248 views04:50
2021-11-18 09:04:31
https://www.medpagetoday.com/meetingcoverage/aha/95696
130 views06:04