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Medical Physics, 2004
As compared with multi-leaf collimator based intensity modulated radiation therapy (IMRT) techniques, physical modulators have the major advantage of temporally invariant intensity map delivery which makes it more flexible with monitor unit rate, simpler resolution of interrupted treatment and easier implementation and use with respiratory gating ...
Tong, Xu +2 more
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As compared with multi-leaf collimator based intensity modulated radiation therapy (IMRT) techniques, physical modulators have the major advantage of temporally invariant intensity map delivery which makes it more flexible with monitor unit rate, simpler resolution of interrupted treatment and easier implementation and use with respiratory gating ...
Tong, Xu +2 more
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Modulation of the intensity of formalized attributes
1988A ‘mechanism’ to commit modifiers for the specification of at tributes is presented in this paper. Such a mechanism consists in a proce dure of Approximate Reasoning.
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Intensity-Modulated Radiotherapy
2012Intensity-modulated radiotherapy (IMRT) is a radiation delivery technique that allows “dose sculpting” to improve target coverage while sparing normal tissues. In an IMRT plan, the number of photons delivered (or “fluence”) varies within a field. Such variability can be used to avoid normal structures with lower radiation tolerance than the cancer and ...
Bridget F. Koontz +2 more
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A review of intensity-modulated radiation therapy
Current Oncology Reports, 2008Intensity-modulated radiation therapy (IMRT) is a sophisticated form of three-dimensional treatment planning and delivery. In some situations, IMRT allows more conformal radiation therapy to complex targets within the lung. As problems related to organ motion are increasingly addressed, the use of IMRT in the treatment of lung cancer, particularly in ...
Laurie E, Gaspar, Meisong, Ding
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Respiratory modulation of shivering intensity in the pigeon
Acta Physiologica Scandinavica, 1987Respiration and shivering were measured in unanaesthetized, cold‐exposed pigeons using pneumotachography and electromyography, respectively. The instantaneous intensity of shivering in the pectoral muscle varied in phase with respiration. Power spectral analysis showed that the main frequency components of respiration and demodulated EMG coincided ...
E, Hohtola, K, Johansen
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Intensity discrimination and detection of amplitude modulation
The Journal of the Acoustical Society of America, 1999Thresholds for detection of low-rate sinusoidal amplitude modulation and for detection of intensity increments were measured over a wide range of levels in an examination of the relationship between these fundamental aspects of intensity processing. As expected, thresholds measured with a continuous 1-kHz tone decrease with increasing carrier/pedestal ...
M, Wojtczak, N F, Viemeister
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Intensity modulation of cutaneous electrical stimulation
European journal of pain supplements, 2006Chronic pain research is increasingly focused on the neuroplastic mechanisms underlying subjective pain experience. The latter is often measured using reported pain intensity, e.g. using a numeric rating scale (NRS). Evoked Potentials (EPs) reflect the cortical representation of applied stimuli and are experimentally used for observation of neural ...
van der Heide, E.M. +3 more
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1965
In most measurements with the oscilloscope, the electron beam, and thus the spot, is deflected by both pairs of deflection plates in co-ordinates at right angles to each other -the Y- and the X-axes. It is, however, sometimes necessary to make a third quantity, namely time, visible on the fluorescent screen.
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In most measurements with the oscilloscope, the electron beam, and thus the spot, is deflected by both pairs of deflection plates in co-ordinates at right angles to each other -the Y- and the X-axes. It is, however, sometimes necessary to make a third quantity, namely time, visible on the fluorescent screen.
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Distortion spectrum of laser intensity modulation
IEEE Transactions on Communications, 1995The simplest and most economical method for transforming many channels of high quality video and audio analog signals into an optical signal makes use of subcarrier multiplexing. In this multiplexing scheme, a broadband analog signal consisting of the sum of many modulated subcarriers (one for each channel), is applied to amplitude modulate the ...
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2015
Intensity-modulated sensors were defined in Chapter 2 as sensors that detect the variation of the intensity of light associated with the perturbing environment. The general concepts associated with intensity modulation include transmission, reflection, and microbending. However, several other mechanisms that can be used independently (intrinsically) or
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Intensity-modulated sensors were defined in Chapter 2 as sensors that detect the variation of the intensity of light associated with the perturbing environment. The general concepts associated with intensity modulation include transmission, reflection, and microbending. However, several other mechanisms that can be used independently (intrinsically) or
openaire +1 more source