نتایج جستجو برای: activity quantification

تعداد نتایج: 1209346  

2016
Andrew P Robinson Jill Tipping David M Cullen David Hamilton Richard Brown Alex Flynn Christopher Oldfield Emma Page Emlyn Price Andrew Smith Richard Snee

BACKGROUND Patient-specific absorbed dose calculations for molecular radiotherapy require accurate activity quantification. This is commonly derived from Single-Photon Emission Computed Tomography (SPECT) imaging using a calibration factor relating detected counts to known activity in a phantom insert. METHODS A series of phantom inserts, based on the mathematical models underlying many clini...

2014
Nadine Eckert Florian Wrensch Sabine Gärtner Navaneethan Palanisamy Ulrike Goedecke Nils Jäger Stefan Pöhlmann Michael Winkler

Reporter genes inserted into viral genomes enable the easy and rapid quantification of virus replication, which is instrumental to efficient in vitro screening of antiviral compounds or in vivo analysis of viral spread and pathogenesis. Based on a published design, we have generated several replication competent influenza A viruses carrying either fluorescent proteins or Gaussia luciferase. Rep...

Journal: :iranian journal of medical physics 0
zahra poursharif department of food science & technology, ferdowsi university of mashhad, mashhad, iran ali ebrahiminia department of biochemistry & biophysics, faculty of medicine, guilan university of medical sciences, rasht, iran mohsen asadinezhad department of biochemistry & biophysics, faculty of medicine, guilan university of medical sciences, rasht, iran abolfazl nickfarjam department of medical physics, shahid sadoughi university of medical sciences, yazd, iran abolghasem haeri radiological protection department, nuclear science & technology research institute, atomic energy organization of iran, tehran, iran karim khoshgard department of medical physics& medical engineering, kermanshah university of medical sciences, kermanshah, iran

introduction foodstuffs are known to contain natural and artificial radionuclides. determination of radionuclide concentration is of great significance for the protection of human health. the main objective of the present study was the quantification of radionuclides in tea samples, cultivated in guilan province in north of iran. materials and methods the activity concentrations of 226ra, 232th...

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