Results 111 to 120 of about 5,132,672 (375)

Radiation dose optimization in thoracic imaging

Journal of the Belgian Society of Radiology, 2010
Guidelines for reduction of CT radiation dose were introduced in 1997 and are now more than 12 years old. The process initiated by the European Regulatory authorities to reduce the excess of radiation from CT has however not produced the expected results.
D Tack
doaj   +1 more source

CT dose reduction factors in the thousands using X-ray phase contrast

, 2017
Phase-contrast X-ray imaging can improve the visibility of weakly absorbing objects (e.g. soft tissues) by an order of magnitude or more compared to conventional radiographs.
., Andres-Thio, Nico, Buckley, Genevieve A., Gureyev, Timur E., Hooper, Stuart B., Kitchen, Marcus J., Uesugi, Kentaro, Wallace, Megan J., Yagi, Naoto   +8 more
core   +2 more sources

ATG4B is required for mTORC1‐mediated anabolic activity and is associated with clinical outcomes in non‐small cell lung cancer

FEBS Open Bio, EarlyView.
The relationship between anabolic and catabolic processes governing lung cancer cell growth is nuanced. We show that ATG4B, an autophagy regulator, is elevated in lung cancer and that high ATG4B is associated with worse patient outcomes. Targeting ATG4B in cells reduces growth, protein synthesis, and mTORC1 activity, demonstrating a new relationship ...
Patrick J. Ryan, Bethany C. Guerra, Selina Uranga, Jessica M. Cardin, Steven E. Riechman, Mariana Janini Gomes, James D. Fluckey   +6 more
wiley   +1 more source

Low-energy electron effects on tensile modulus and infrared transmission properties of a polypyromellitimide film [PDF]

Infrared (IR) spectroscopy and tensile modulus testing were used to evaluate the importance of experimental procedure on changes in properties of pyromellitic dianhydride-p,p prime-oxydianiline film exposed to electron radiation.
Ferl, J. E., Long, E. R., Jr.
core   +1 more source

Effects of low dose radiation on behavior rhythm of zebrafish (Danio rerio)

, 2023
Weichao Zhao, Liang Mao, Chuqi He, Dexin Ding, Nan Hu, Xiaohua Song, Dingxin Long   +6 more
openalex   +1 more source

Anticancer sensitivities and biological characteristics of HCT116 cells resistant to the selective poly(ADP‐ribose) glycohydrolase inhibitor

FEBS Open Bio, EarlyView.
We analyzed alterations of PAR metabolism‐related proteins in PARG inhibitor‐resistant HCT116RPDD cells. Although PARG levels remained unchanged, HCT116RPDD cells exhibited reduced PARP1 and ARH3 expression and elevated PAR levels. Interestingly, HCT116RPDD cells exhibited slightly elevated intracellular NAD+/NADH and ATP levels. Our findings suggest a
Kaede Tsuda, Yoko Ogino, Akira Sato
wiley   +1 more source

Investigation of Natural Effective Gamma Dose Rates case study: Ardabil Province in Iran [PDF]

Gamma rays pose enough energy to form charged particles and adversely affect human health. Since, the external exposure of human beings to natural environmental gamma radiation normally exceeds that from all man-made sources combined, natural background ...
A Bozkurt, F Bouzarjomeheri, F Saghatchi, FH Al-Ghorabie, FS Al-Saleh, H Ahmadi, H Arvela, JS Hughes, JU Ahmed, L Rybach, M Bahreini Tosi, M Charles, M Pollycove, M Sohrabi, MB Tavakoli, MT Bahreini Tousi, MT Bahreini Tousi, S Hazrati, S Hazrati, S Selvasekarapandian   +19 more
core   +3 more sources

Case of a 35‐Year‐Old Man With Pain With Sneezing and Leg Weakness Causing Collapse

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT This case details a 35‐year‐old man with no past medical history who presents with acute paraparesis and urinary retention in the setting of progressive paresthesias and weakness of his lower and upper extremities over several months. He was found to have longitudinally extensive transverse myelitis involving the cervical to mid‐thoracic cord ...
Joey Hsu, Karen Schoedel, Alan Plotzker, Leana Doherty   +3 more
wiley   +1 more source

Microwave dosimeter - A concept [PDF]

, 1971
Dosimeter determines time-integrated radiation dosage to which an individual is exposed. Integration is measured chemically in proportion to radiation detected.
Bartlett, R. G., Bird, F.
core   +1 more source

Raise the Bar and Lower the Dose: Current and Future Strategies for Radiation Dose Reduction in Head and Neck Imaging

American Journal of Neuroradiology, 2014
SUMMARY: Technologic advances in CT have generated a dramatic increase in the number of CT studies, with a resultant increase in the radiation dose related to CT scanning. Such increase in radiation dose is becoming a concern for the radiology community,
M. Ibrahim, H. Parmar, E. Christodoulou, S. Mukherji   +3 more
semanticscholar   +1 more source