scholarly journals Post Mortem examination of Hospital Inpatient COVID-19 Deaths in Lusaka, Zambia - A Descriptive Whole Body Autopsy Series

Author(s):  
Cordelia Maria Himwaze ◽  
Viktor Telendiy ◽  
Fred Maate ◽  
Mupeta Songwe ◽  
Chitalu Chanda ◽  
...  
The Lancet ◽  
2009 ◽  
Vol 374 (9688) ◽  
pp. 467-475 ◽  
Author(s):  
Sudhin Thayyil ◽  
Jon O Cleary ◽  
Neil J Sebire ◽  
Rosemary J Scott ◽  
Kling Chong ◽  
...  

Author(s):  
S. Sawall ◽  
L. Klein ◽  
E. Wehrse ◽  
L. T. Rotkopf ◽  
C. Amato ◽  
...  

Abstract Objective To evaluate the dual-energy (DE) performance and spectral separation with respect to iodine imaging in a photon-counting CT (PCCT) and compare it to dual-source CT (DSCT) DE imaging. Methods A semi-anthropomorphic phantom extendable with fat rings equipped with iodine vials is measured in an experimental PCCT. The system comprises a PC detector with two energy bins (20 keV, T) and (T, eU) with threshold T and tube voltage U. Measurements using the PCCT are performed at all available tube voltages (80 to 140 kV) and threshold settings (50–90 keV). Further measurements are performed using a conventional energy-integrating DSCT. Spectral separation is quantified as the relative contrast media ratio R between the energy bins and low/high images. Image noise and dose-normalized contrast-to-noise ratio (CNRD) are evaluated in resulting iodine images. All results are validated in a post-mortem angiography study. Results R of the PC detector varies between 1.2 and 2.6 and increases with higher thresholds and higher tube voltage. Reference R of the EI DSCT is found as 2.20 on average overall phantoms. Maximum CNRD in iodine images is found for T = 60/65/70/70 keV for 80/100/120/140 kV. The highest CNRD of the PCCT is obtained using 140 kV and is decreasing with decreasing tube voltage. All results could be confirmed in the post-mortem angiography study. Conclusion Intrinsically acquired DE data are able to provide iodine images similar to conventional DSCT. However, PCCT thresholds should be chosen with respect to tube voltage to maximize image quality in retrospectively derived image sets. Key Points • Photon-counting CT allows for the computation of iodine images with similar quality compared to conventional dual-source dual-energy CT. • Thresholds should be chosen as a function of the tube voltage to maximize iodine contrast-to-noise ratio in derived image sets. • Image quality of retrospectively computed image sets can be maximized using optimized threshold settings.


1997 ◽  
Vol 38 (3) ◽  
pp. 253-262
Author(s):  
A.-M. Dalin ◽  
K. Gidlund ◽  
L. Eliasson-Selling

2015 ◽  
Vol 129 (6) ◽  
pp. 1253-1258 ◽  
Author(s):  
Krzysztof Jerzy Woźniak ◽  
Artur Moskała ◽  
Piotr Kluza ◽  
Karol Romaszko ◽  
Oleksiy Lopatin ◽  
...  

1874 ◽  
Vol 20 (90) ◽  
pp. 259-262
Author(s):  
William T. Benham

Mary M., æt 14, was admitted into the Bristol Asylum July 15th, 1862. She is described in the case book as having a hydrocephalic cranium, measuring “24 inches in circumference, and 14 inches over vertex.” Trunk shortened and thickened; legs doubled up on the thighs, which were again slightly flexed on the abdomen. Quite unable to walk or stand, but could sit comfortably in a low chair. She possessed considerable intelligence; knew the name of the place from whence she came, and answered simple questions in a lively manner Had her bodily health and education have been well attended to, it is probable that she would have possessed a fair amount of mental power. She was dirty in her habits, but of a tractable disposition, and good tempered. During the year following her admission attempts were made to teach her to read, but without success; she, however, soon learnt to be cleanly in her person and habits.


1986 ◽  
Vol 15 (2) ◽  
pp. 95-98 ◽  
Author(s):  
P H Cooke ◽  
A E Goodship

An experiment was performed to determine the effects of stiffness of cruciate ligament prostheses upon joint function and degeneration. Twenty four sheep were allocated into four groups. One group had the ligament excised with no replacement and subsequent groups underwent substitution procedures with either a stiff, matched, or lax prosthesis. After six months the animals with a stiff or matched prosthesis were significantly less lame than those with a lax prosthesis or no prosthesis. However, at post mortem examination the animals with a stiff prosthesis or no prosthesis showed significantly more widespread cartilage damage than the matched or lax groups. The results indicate that either a stiff or matched prosthesis may restore functional activity, but that the stiff prosthesis may predispose to increased degenerative changes.


Sign in / Sign up

Export Citation Format

Share Document