نتایج جستجو برای: dental dosimetry

تعداد نتایج: 169619  

Journal: :Radioprotection 1996

Journal: :Quaternary Geochronology 2022

Palaeolithic sites associated with the Eemian Interglacial (MIS 5e) are very rare in NW Europe, and especially Northern France, where their preservation is restricted to specific geological contexts, association carbonated tufa (Caours) or peat deposits (Waziers). In order check reliability of ESR/U-series method date teeth recovered from archaeological levels such environments, were sampled on...

Journal: :Lasers in surgery and medicine 2005
Ryan Wright Dmitry E Protsenko Sergio Diaz Kevin Ho Brian Wong

BACKGROUND AND OBJECTIVES The process of altering the shape of cartilage using heat has been referred to as thermoforming, and presents certain clinical benefits in reconstructive surgical procedures within the head and neck. Thermoforming allows cartilage in the upper airway and face to be reshaped without the use of classic surgical maneuvers such as carving, morselizing, or suturing. The goa...

Journal: :iranian journal of medical physics 0
hamid reza sadoughi m.sc. student of medical physics, medical physics dept., tehran university of medical sciences, tehran, iran mahmood allahverdi associate professor, medical physics dept., tehran university of medical sciences, and radiotherapy physics department of cancer institute, tehran, iran hasan nedaei assistant professor, radiotherapy physics dept., cancer institute, tehran, iran ramin jaberi radiotherapy physicist, radiotherapy physics dept., cancer institute, tehran, iran mahbod esfahani radiotherapy physicist, radiotherapy physics dept., cancer institute, tehran, iran alireza shirazi associated professor, medical physics dept., tehran university of medical sciences, tehran, iran

introduction: multiple fields and presence of heterogeneities create complex dose distributions that need three dimensional dosimetry. in this work, we investigated mr-based magic gel dosimetry as a three-dimensional dosimetry technique to measure the delivered dose to bladder and rectum in prostate radiation therapy. materials and methods: a heterogeneous slab phantom including bones was made....

2014
D. E. Raeside

The field of personnel radiation monitoring is presently in a state of radical change. It appears that the unreliability of the film badge is now firmly established, bringing into question the value of much of the massive amount of personnel dosimetry data accumulated in the past three decades. This article examines the evidence "against" the film badge and reviews the comparative studies "for"...

Journal: :Kathmandu University medical journal 2012
C R Bhatt A Widmark S L Shrestha T Khanal B Ween

BACKGROUND Radiation, which is used extensively to diagnose and treat human diseases, poses an occupational health risk for the concerned health workers. Personal dosimetry is an important tool to monitor occupational radiation exposures. OBJECTIVE This study was conducted to reveal and to describe the situation of occupational radiation exposure monitoring among staffs in different health ca...

2006
ANATOLY B. ROSENFELD

Semiconductor radiation detectors play an important role in radiation instrumentation. They have many advantages due to their small size, outstanding energy resolution in nuclear spectroscopy, easy pixilation for high spatial resolution and ability of integration with readout electronics. Advancement in microelectronic industry made silicon one of the most popular material for radiation detecto...

2010
A. Solimanian M. Ghafoori Mostafa Ghafoori

*Corresponding author: Dr. Mostafa Ghafoori, Radiation Dosimetry and Monitoring group, Agricultural, Medical and Industrial Research School (AMIRS), Nuclear Science and Technology Research Institute (NSTRI), Atomic Energy Organization of Iran (AEOI), P.O. Box 31485-498 Karaj, Iran. Fax: +98 261 4464058 E-mail: [email protected] Background: Absolute dosimetry of external beam radiotherapy is c...

Journal: :International journal of radiation biology 2017
François Trompier Christopher Burbidge Céline Bassinet Marion Baumann Emanuela Bortolin Cinzia De Angelis Jonathan Eakins Sara Della Monaca Paola Fattibene Maria Cristina Quattrini Rick Tanner Albrecht Wieser Clemens Woda

PURPOSE In the EC-funded project RENEB (Realizing the European Network in Biodosimetry), physical methods applied to fortuitous dosimetric materials are used to complement biological dosimetry, to increase dose assessment capacity for large-scale radiation/nuclear accidents. This paper describes the work performed to implement Optically Stimulated Luminescence (OSL) and Electron Paramagnetic Re...

2001
Mehrdad Sarfaraz Cedric Yu D. J. Chen Leon Der

We have constructed a computer controlled translational couch to administer total body irradiation reproducibly and safely. The system has replaced the previous stationary anterior-posterior technique in our institution and 30 plus patients have been treated with it so far. In this technique, patients comfortably lie on a couch in supine and prone positions and are transported slowly through a ...

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