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At least 307 records · Page 17Linked to original sources
PubMed1971

Relative susceptibility of acid-fast and non-acid-fast bacteria to ultraviolet light.

Mycobacterium tuberculosis strain Erdman, M. bovis (BCG), and M. phlei showed a 1- to 2-log drop in viability after exposure to ultraviolet light compared to a 5-log drop over the same period for Staphylococcus albus, Listeria monocytogenes, Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, and Serratia marcescens. L. monocytogenes showed an initial resistance to ultraviolet inactivation, but later the inactivation rate increased sharply. The significance of these findings with regard to the use of S. marcescens as a test organism for determining the bactericidal efficiency of ultraviolet lamps used to sterilize equipment contaminated with tubercle bacilli is discussed.

Acids↗
PubMed2002

[Examination of MR cholangiopancreatography using the fast recovery single shot fast spin echo sequence].

During this project, we evaluated methods to scan MRCP images with overlapping slice positions during one breath-hold using the FRSSFSE sequence. The FRSSFSE sequence is a technique to arbitrarily change the residual transverse magnetization to longitudinal magnetization. With the SSFSE sequence, the imaging field where the slice position overlaps is subject to substantial influence from the saturation effect of the water component. Therefore, one breath-hold is required for each image. However, the FRSSFSE sequence enabled the deterioration in image quality due to the saturation effect to be minimized even during a short TR. This enabled images of overlapping slice positions to be scanned during one breath-hold. We used a setting of TR=5,000 ms at our hospital, and scanned several images with overlapping slice positions during one breath-hold. The TR=5,000 ms setting was determined from image quality and breath-hold time considerations. The use of the FRSSFSE sequence with MRCP enabled 3-4 images to be scanned at overlapping slice positions during one breath-hold. This method is effective in reducing examination time and the burden on the patient.

Bile Ducts↗