Image perception by expert readers as a function of patient skin entrance dose levels in digital radiography

2008 ◽  
Author(s):  
T. Lehnert ◽  
H. Korkusuz ◽  
F. Khan ◽  
T. J. Vogl ◽  
M. G. Mack
Keyword(s):  
Digital Radiography ◽  
Image Perception ◽  
Entrance Dose ◽  
Skin Entrance Dose ◽  
Dose Levels

scholarly journals MÖNCH detector enables fast and low-dose free-propagation phase-contrast computed tomography ofin situmouse lungs

2018 ◽  
Vol 25 (2) ◽  
pp. 565-569 ◽  
Author(s):  
Christian Dullin ◽  
Jonas Albers ◽  
Giuliana Tromba ◽  
Marie Andrä ◽  
Marco Ramilli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lung Disease ◽  
Phase Contrast ◽  
Mouse Lung ◽  
The Novel ◽  
Entrance Dose ◽  
Hybrid Detector ◽  
Dose Levels ◽  
Mouse Lungs

Due to the complexity of the underlying pathomechanism,in vivomouse lung-disease models continue to be of great importance in preclinical respiratory research. Longitudinal studies following the cause of a disease or evaluating treatment efficacy are of particular interest but challenging due to the small size of the mouse lung and the fast breathing rate. Synchrotron-based in-line phase-contrast computed tomography imaging has been successfully applied in lung research in various applications, but mostly at dose levels that forbid longitudinalin vivostudies. Here, the novel charge-integrating hybrid detector MÖNCH is presented, which enables imaging of mouse lungs at a pixel size of 25 µm, in less than 10 s and with an entrance dose of about 70 mGy, which therefore will allow longitudinal lung disease studies to be performed in mouse models.

Skin entrance dose with and without lead apron in digital panoramic radiography for selected sensitive body regions

2016 ◽  
Vol 21 (4) ◽  
pp. 1327-1333 ◽  
Author(s):  
Ralf Kurt Willy Schulze ◽  
Catrin Cremers ◽  
Heiko Karle ◽  
Hugo de las Heras Gala
Keyword(s):  
Panoramic Radiography ◽  
Lead Apron ◽  
Body Regions ◽  
Entrance Dose ◽  
Digital Panoramic Radiography ◽  
Skin Entrance Dose

Intraneuronal accumulations of lysosomes in the cerebellum of rats and dogs after dosing with MDL-832

1990 ◽  
Vol 48 (3) ◽  
pp. 830-831
Author(s):  
S.D. Barnard ◽  
S.D. Warner
Keyword(s):  
Brown Pigment ◽  
Beagle Dogs ◽  
Sprague Dawley ◽  
Gelatin Capsules ◽  
Pigment Granules ◽  
Sprague Dawley Rats ◽  
Hematoxylin And Eosin ◽  
Dose Levels

1, 2, 9, 10-tetramethoxyaporphine phosphate (MDL-832) was once considered a potential human antitussive. MDL-832 was administered orally in the diets of Sprague-Dawley rats at dose levels of 0, 5, 10, 20, 40, 80 and 160 mg/kg/day for 3 and 6 months and in gelatin capsules to Beagle dogs at 0, 5, 10, 15, 30 and 60 mg/kg/day for 3, 6 and 12 months. Histopathologic examinations of hematoxylin and eosin-stained cerebellar sections revealed intracytoplasmic brown pigment accumulations in large fusiform neurons (presumably the motor type) of the pons. The pigment granules were found to be PAS-positive, non-acid fast, iron-free, Sudan B-positive and fuchsinophilic. Intraneuronal pigment accumulations were seen in rats after 3 months of treatment at 80 mg but not at 40 mg and after 6 months at 20 mg but not at 10 mg. For dogs the effect was observed after 3 months at 60 mg but not at 30 mg and after 12 months at 10 mg but not at 5 mg.

Evaluation of two link GAT-1 trainer tasks by experienced pilots at three alcohol dose levels

1974 ◽  
Author(s):  
Peter H. Henry ◽  
Thomas Q. Davis ◽  
Edward J. Engelken ◽  
Richard C. McNee ◽  
Harold N. Keiser ◽  
...  
Keyword(s):  
Alcohol Dose ◽  
Dose Levels
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