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Topic: Ultrafast

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	Ultrafast / Electron Beam CT Scan
		Ultrafast CT can take multiple images of the heart within the time of a single heartbeat, thus, providing more detail about the heart's function and structures, and also greatly decreasing the amount of time required for a study.
		A three-dimensional (3D) version of ultrafast CT may be used to assess the pulmonary arteries and veins in the lungs.
		If your child's physician schedules an ultrafast CT scan of the heart or chest and decides to use contrast dye, your child may need to be NPO (fasting, nothing by mouth) for several hours prior to the procedure.
	www.healthsystem.virginia.edu /uvahealth/peds_cardiac/uebctscn.cfm (793 words)

	Lancaster General Hospital - Ultrafast CT (Computed Tomography) Scan (Site not responding. Last check: 2007-10-08)
		Ultrafast CT can take multiple images of the heart within the time of a single heartbeat, thus providing much more detail about the heart's function and structures, while also greatly decreasing the amount of time required for a study.
		Thus, ultrafast CT scanning is being used by many physicians as a means to diagnose early coronary artery disease in certain people, especially persons who have no symptoms of the disease.
		Ultrafast CT is currently used primarily for the diagnosis of coronary artery disease, particularly in people who have no symptoms of the disease but who have significant risk factors for the disease.
	www.lancastergeneral.org /content.asp?pageid=P01281 (599 words)

	Ultrafast Lasers
		Pulses of light from ultrafast lasers are used to initiate and probe physical processes with unprecedented timing and accuracy.
		The standard approach for modeling ultrafast pulses, the slowly varying envelope approximation, assumes that only small amplitude differences occur between the individual peaks in the electric field of the optical pulse.
		With the recent advances of ultrafast lasers, experimental verification of the validity of this theory seems to be in reach.
	www.spie.org /web/oer/april/apr99/ultrafast.html (548 words)

	Ultrafast CT
		Ultrafast CT is a quick, easy, and relatively inexpensive technique which allows the arteries to the heart to be directly visualized.
		Ultrafast CT shines however in discovering the process of atherosclerosis at a more basic level: It sees the development of lesions before they begin to interrupt the path of blood flow by imaging the changes that occur in the vessel wall itself.
		Ultrafast CT is a quick, easy, and relatively inexpensive technique which images calcium in the vessel wall as well as the arterial channel to some degree.
	www.heartpoint.com /ultrafastct.htm (2422 words)

	Ultrafast Computed Tomography (Ultrafast CT Scan) (Site not responding. Last check: 2007-10-08)
		Ultrafast CT scans can take multiple images of the heart within the time of a single heartbeat, thus providing much more detail about the heart's function and structures, and also greatly decreasing the amount of time required for a study.
		Thus, ultrafast CT scanning may be used by physicians as a means to diagnose early coronary artery disease in certain people, especially in individuals who have no symptoms of the disease.
		Ultrafast CT is used primarily for the diagnosis of coronary artery disease, particularly in persons who have no symptoms of the disease but who have significant risk factors for the disease.
	www.muschealth.com /gs/TandP.aspx?PageID=P07987 (1115 words)

	LMS: About LMS
		The chamber is augmented with a retractable gas dosing assembly, a residual gas analyzer and a cooling system which enables temperature-dependent experiments down to 10 K. In the reflection mode, the conceptual framework is as follows.
		The change of the structure is initiated by an ultrafast laser pulse.
		The coexistence of ordered surface water and crystallite-like ice structures and the dynamics after the ultrafast substrate temperature jump were observed.
	www.its.caltech.edu /~lms/research/ultrafast.html (738 words)

	Radiology Regional Center - Ultrafast Lung CT Scan (Site not responding. Last check: 2007-10-08)
		The Ultrafast Screening of the Lungs is a non-invasive CT scan that can detect abnormalities and lung cancer in its earlier, more curable stages using a new technique called helical low-dose CT scanning.
		The only preparation required for the Ultrafast Lung CT Scan is for the patient to complete a standard medical history questionnaire at the time of his appointment.
		The Ultrafast Screening of the Lungs is a simple, non-invasive scan in which you lie on the scanning table for a few minutes.
	www.radiologyregional.com /ultrafastlungctscan.html (638 words)

	Laser Focus World - Ultrafast technology delivers OEM lasers
		Ultrafast laser technology has recently reached this milestone, and is poised to have an impact on several important industrial applications.
		Ultrafast lasers can process a broad range of materials, including those that are transparent to the incident wavelength of the laser because the ultrafast pulses machine by driving nonlinear multiphoton absorption with high peak fluences, so strong absorption at the workpiece is not critical.
		Ultrafast lasers are also able to produce tiny medical devices such as the stents used in angioplasty procedures.
	lfw.pennnet.com /Articles/Article_Display.cfm?Section=Articles&Subsection=Display&ARTICLE_ID=142870 (2122 words)

	Ultrafast - Wikipedia, the free encyclopedia
		In physics, the adjective ultrafast describes events that occur on femtosecond (10
		Once impossible to observe, ultrafast phenomena are now extensively studied thanks to advances in the design of pulsed dye lasers and more recently with the invention of the pulsed Ti:sapphire laser, which can create pulses as short as 5 femtoseconds (roughly two optical cycles) when mode-locked.
		The ability to study phenomena that happen on very short timescales is useful in many fields of science.
	en.wikipedia.org /wiki/Ultrafast (231 words)

	Radiology Regional Center - Ultrafast Heart CT Scan (Site not responding. Last check: 2007-10-08)
		The Ultrafast CT Scan Screening of the Heart is a quick and simple test which assesses your risk of heart attack by detecting and measuring the amount of calcium build-up in your coronary arteries.
		The Ultrafast CT Scan Screening of the Heart is considered to be one of the best available tests to predict the risk of heart attack in apparently healthy people.
		The only preparation required for the Ultrafast Heart CT Scan is for the patient to complete a standard medical history questionnaire at the time of his appointment.
	www.radiologyregional.com /ultrafastheartctscan.html (843 words)

	UltraFast T1 Wireless - How to Order
		But depending on your distance from a UltraFast T1 Wireless network antenna, our signal can pass through some types of building materials and other obstructions, so you may be able to get service even if you can't see the antenna.
		UltraFast T1 Wireless uses Direct Sequence Spread Spectrum (DSSS), a method that was developed for military applications requiring resistance to noise, interference, jamming and unauthorized listening.
		UltraFast T1 Wireless Wireless Broadband Service is available for a fraction of the cost that companies would pay for traditional wireline T1s – less than $400 per month – and provides data speed that is 10-20% faster than a T1.
	www.ultrafastwireless.com /faq-enduser.html (1205 words)

	October 17, 2005 - First Director Appointed for New Stanford Ultrafast Science Center - Press Release
		The Ultrafast Science Center is a partnership between Stanford and the U.S. Department of Energy to provide a central home and world leadership in ultrafast and short wavelength science and technology.
		Ultrafast science examines the fast movements and transformations of atoms, molecules and materials that take place in mere femtoseconds (quadrillionths of a second).
		In its initial years, the center will focus on ultrafast structural and electronic dynamics in materials science, the generation of laser pulses lasting only attoseconds (quintillionths of a second), imaging of single molecules and non-periodic materials, and the study of ultrafast light-induced chemical reactions.
	home.slac.stanford.edu /pressreleases/2005/20051017.htm (1066 words)

	News from NIST: Ultrafast Laser Speeds Up Quest for Atomic Control
		JILA researchers used pulses of ultrafast laser light to boost the outer electron in rubidum atoms to higher, "excited" levels, then detected the energy released by the atoms in the form of fluorescent light as they "relaxed" back to their natural state.
		Described in the Nov. 18 online issue of Science Express,* the method uses ultrafast pulses of laser light like a high- speed movie camera to record in real-time the energy required to boost an atom's outer electrons from one orbital pattern to another.
		The pulses are so short that scientists can track precisely the fraction of atoms in each energy state and how those populations change with time.
	www.nist.gov /public_affairs/newsfromnist_Ultrafast_lasers.htm (455 words)

	CT, Ultrafast definition - Heart Disease and other cardiovascular conditions on MedicineNet.com
		The major value of Ultrafast CT appears to be in screening young patients with one or more risk factors for the development of CAD.
		Ultrafast CT scanning is of limited value for older patients in whom some degree of calcification is commonly found.
		Ultrafast CT was reported to be a better test than treadmill-ECG or technetium-stress test for detecting CAD (J Am Coll Cardiol 2000;36:32-38,326-340).
	www.medterms.com /script/main/art.asp?articlekey=10295 (371 words)

	Ultrafast Dynamics in Water
		However, it is a fundamental challenge for the radiation chemistry community to unravel the early time dynamics of electronically excited states in water because their short (femtosecond) time scales are difficult to access directly with pump—probe measurements.
		For hydrogen-bonded systems such as liquid water, ultrafast dynamics that occur during the lifetime of the core-excited state complicate the interpretation of the XES in terms of molecular structures but open a unique opportunity to study femtosecond reaction dynamics.
		By controlling the excitation energy of the initial x-ray absorption, the ultrafast dissociation of hydrogen-bonded or uncoordinated OH groups can be selectively probed in liquid water in the x-ray emission spectrum.
	www-als.lbl.gov /als/science/sci_archive/118ultrafast.html (959 words)

	Clark-MXR, Inc. Femtosecond Lasers Micromachining Handbook
		The difference comes from the fact that in a nuclear power plant, power is being delivered continuously, whereas in these ultrafast lasers power is being compressed into pulses that are less than a trillionth of a second in duration.
		Ultrafast lasers can produce this state of matter because they pack so many particles of light called photons into so small a time interval that when they interact with the atoms in the surface of the material, they strip as many as 15 electrons off the atom.
		For example, it is possible to locally change the index of refraction of materials at the focus of an ultrafast laser beam, inside the bulk of the material (see our section on waveguides).
	www.cmxr.com /Industrial/Handbook/Glossary.htm (890 words)

	BCP/Ultrafast: The Femtosecond research Centre
		The Ultrafast group's interests are femtosecond chemical physics experiments and the development of novel techniques such as fs electron pulses and terahertz (THz) pulses.
		Our main research goal is the study of ultrafast reaction dynamics (chemical, physical, and biological) in the condensed phase and in particular the role of quantum coherence and collective modes.
		For example, high-power ultrafast lasers are used to produce femtosecond electron pulses for the study of dynamics on surfaces.
	bcp.phys.strath.ac.uk /ultrafast/frc.php (937 words)

	UltraFast T1 Wireless - Technology
		UltraFast T1 Wireless has coupled its experienced wireless network operations team with the technical expertise of world-renowned firms to craft the most compelling Internet access offering to date.
		UltraFast T1 Wireless currently operates in the 2.4-GHz spectrum, but its architecture maintains the frequency agility to easily migrate to other nearby RF spectrums.
		UltraFast T1 Wireless has a 100% routed Ethernet network with none of the bridging common with cable and other wireless Internet access networks.
	www.ultrafastwireless.com /technology.html (647 words)

	Ultrafast Optoelectronics Laboratory (Site not responding. Last check: 2007-10-08)
		Most of the research will be conducted at the Ultrafast Optoelectronics Laboratory and the newly established Laboratory for Atomic, Molecular and Optical Science and Engineering (LAMOS).
		To reduce the size and cost of lasers a research effort has been concentrated in developing compact, ultrafast laser sources which include semiconductor MQW lasers and diode pumped solid-state lasers.
		To have a complete research capability in ultrafast optoelectronics and electronics, a new research effort in making high speed MSM photodetector has been added.
	www.ee.umd.edu /~chlee/chlee/leersrch.html (408 words)

	Hegmann Ultrafast Spectroscopy and Terahertz Pulse Spectroscopy Lab
		We study ultrafast phenomena in materials and devices using a femtosecond laser source.
		The front-end of the ultrafast laser source consists of a Kerr-lens mode-locked Ti:sapphire oscillator producing 30 fs-wide pulses at a wavelength of 800 nm.
		Ultrafast carrier dynamics in semiconductor nanostructures measured by time-resolved terahertz pulse spectroscopy (TRTS).
	laser.phys.ualberta.ca /~hegmann (1025 words)

	Ultrafast Computed Tomography - Page 1
		Also known as electron-beam computed tomography (EBCT), ultrafast computed tomography (ultrafast CT) is a noninvasive imaging technique that allows for clear, three-dimensional pictures of the heart and its structures.
		Currently, the leading use of the ultrafast CT is to measure calcium deposits in the
		To the contrary, researchers are still gathering and analyzing data on the ultrafast CT scan to see where it belongs in the hierarchy of cardiac imaging tests.
	heart.healthcentersonline.com /noninvasivecardiactest/UltrafastCT.cfm (570 words)

	Press Release - New Virtual Journal of Ultrafast Science now online
		Ultrafast science deals with physical phenomena that occur in the range of one-trillionth of a second (one picosecond) to one-quadrillionth of a second (one femtosecond), or even less.
		Another useful aspect of intense, ultrafast light sources is that they can produce very high electric fields.
		Ultrafast technology can be utilized for research or applications across the fields of physics, chemistry, optics, biology, and laser engineering.
	www.aip.org /press_release/ultrafast.html (604 words)

	Ultrafast Communications - Voice (Site not responding. Last check: 2007-10-08)
		You can do this manually but you.ll find your staff will forget or perhaps not understand how significant the savings are when using UltraFast.
		You may wish to leave your local calls with your current provider, for example, because they are already billing you for your lines.
		UltraFast AccessAdvantage is a packaged telephony and high speed internet connection solution.
	www.ultrafast.com.au /voice/index.html (439 words)

	4th Ultrafast Surface Dynamics Conference
		Ultrafast surface dynamics concerns the transfer of charge and energy at solid surfaces on the femtosecond time scale.
		There is no doubt that successful development in the field of ultrafast surface dynamics will contribute to many important disciplines.
		The Symposium on Ultrafast Surface Dynamics (USD) has been held biannually beginning with 1997 in Ascona, Italy, followed by Ringberg, Germany in 1999, and San Sebastian, Spain in 2001.
	www.chem.umn.edu /USD (294 words)

	[No title]
		Ultrafast CT (also called EBCT or electron-beam CT) can take multiple images of the heart within the time of a single heartbeat, thus providing much more detail about the heart's function and structures, while also greatly decreasing the amount of time required for
		There is no preparation necessary prior to the procedure, although each hospital may have slightly different protocols in place.
		Ultrafast CT (EBCT) can measure calcium deposits in the coronary arteries.
	www.websystem2.com /articles/13w_UltraFast_CT.asp?DOCTOR=drsmith (867 words)

	LOPE@ECE - R&D: Ultrafast Phenomena
		This research is centered around the use of ultrafast lasers, that is, pulsed lasers that have a temporal width near 100 femtoseconds (10
		This is useful for time-domain spectroscopy applications, since any wavelength can be selected while preserving the ultrafast timescale of the pulses.
		Specifically, we are using a four-wave mixing process in alkali-metal vapors to generate and detect wavepackets (that is, a superposition of states) which are populated by the large-bandwidth ultrafast laser pulses.
	lope.ece.uiuc.edu /research/ultrafast.htm (830 words)

	Ultrafast CT - Radiology Health Guide
		A new technology called ultrafast CT (computed tomography) has begun to be used in the past few years to diagnose heart disease.
		An ultrafast CT scan may be scheduled for:
		Although each hospital may have specific protocols in place, generally an ultrafast CT procedure follows this process:
	www.umm.edu /radiology/fastct.htm (737 words)

	Ultrafast Center at Stanford University
		The Ultrafast Science Center is based on a remarkable new venture at SLAC/Stanford — the construction of the world’s first x-ray free electron laser.
		The coming of the Linac Coherent Light Source (LCLS), the world's first hard x-ray laser, and the Ultrafast Science Center will help ensure that Stanford and SSRL will be at the forefront of advances in the studies of ultrafast phenomena using x-rays and electrons.
		The Center will focus on ultrafast structural and electronic dynamics in materials science, the generation of attosecond laser pulses, single molecule imaging, and the origin of efficient light harvesting and solar energy conversion in molecular systems during the first three years of operation.
	www-ssrl.slac.stanford.edu /ultrafast/ums (242 words)

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