Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Thomas P. Rutten"'
Publikováno v:
Radiation Measurements. 104:22-31
Several promising scintillation dosimetry systems have recently emerged that extend measurements of absorbed dose distributions to three dimensions. We have investigated the use of a small-sized, low-cost, shielded camera for fibre-less detection of
Publikováno v:
Medical Physics. 39:4123-4131
Purpose: The roles of postimplant dosimetry (PID) after permanent I-125 implant are to identify and rectify inadequate implants, assess the dosimetric quality indicators, and evaluate dose to the organs at risk. The aim of the current work was to ass
Publikováno v:
IEEE Journal of Quantum Electronics. 44:911-915
We present a new and simple technique for efficient stretching of Q-switched laser pulses using a novel ring resonator and a variable Pockels cell Q-switch driven by a simple circuit. The production of 10-mJ flat-topped Q-switched pulses with a durat
Publikováno v:
Physics in medicine and biology. 57(12)
Optical CT scanners for a 3D readout of externally irradiated radiosensitive hydrogels currently require the use of a refractive index (RI) matching liquid bath to obtain suitable optical ray paths through the gel sample to the detector. The requirem
Publikováno v:
Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB). 29(6)
usc Low dose rate prostate brachytherapy treatments began at the Royal Adelaide Hospital (RAH), Australia, in September 2004. This paper will focus on the evolution of treatment technique since then showing how procedural improvements have enabled ti
Publikováno v:
Journal of Medical Physics / Association of Medical Physicists of India
In order to evaluate two-dimensional radiation dose distributions, an algorithm called the Gamma function has recently been modified. The current study concentrates on modification of the gamma function as a three-dimensional dose distribution evalua
Autor:
Nikita Simakov, Celine d'Orgeville, P. J. Veitch, Jesper Munch, Thomas P. Rutten, M. W. Hamilton
Publikováno v:
SPIE Proceedings.
We describe a new, improved approach for sodium guide-star lasers for the correction of atmospheric aberrations in telescopes, which satisfies all current requirements for advanced pulse burst waveforms. It makes use of sum frequency generation (SFG)
Publikováno v:
2007 Quantum Electronics and Laser Science Conference.
We describe a new laser design for a 50 W laser guide star source, suitable for large aperture telescopes employing multi conjugate adaptive optics systems. Design verification experiments will be presented showing bandwidth control and progress towa
Publikováno v:
Review of Scientific Instruments. 78:073108
We describe a versatile Pockels cell Q-switch driver that can generate high voltage electrical pulses having both fast rise times and long duration, with a repetition rate in excess of 1 kHz. The circuit is simple and easily adaptable to most types o
Publikováno v:
Optics Express. 15:2369
Injection mode-locking combined with stretched Q-switching of a ring resonator are proposed and demonstrated as a promising approach for advanced, guide star lasers. The concept uses two Nd:YAG lasers, producing a macro-micro pulse-burst output, opti