The utilization rates of noninvasive diagnostic imaging procedures such as computed tomography (CT) scans, magnetic resonance imaging (MRI), and positron emission tomography (PET) for the Medicare population vary substantially from region to region, with Atlanta, GA, having the highest utilization rate and Seattle, WA, having the lowest, according to a [...]
Posts Tagged ‘emission’
Noninvasive Diagnostic Imaging Utilization Rates For The Medicare Population Vary Geographically
Posted by admin on Nisan 5th, 2010
Posted in Genel 
Tags: (MedPAC), 3.47, 3.95, 4.60, 50, a, About, access-to-care, according, accurate, Advisory, American, and, appears, April, are, as, at, Atlanta, Author, based, be, been, below, calculated, capita, cardiovascular, categories., centers, clear, Commission, compared, Computed, concerns, cost, costs, course, CT, data), diagnostic, difference, eightfold, emission, exist, explored, factors, files, focus, For, from, further, GA, general, geographic, greater, growth, had, has, Having, he, high, high-cost, high-technology, highest, Hospital, however, imaging, in, including, increases, increasing, involved, is, issue, it, its, Jefferson, Journal, Laurence, lead, like, low, lowest, Magnetic, many, Medicaid, Medicare, morbidity, more, MRI, much, nationally, noninvasive, Number, of, on, only., or, other, over, overall., overutilization, Pa, Parker, Parker. "There, Parker. Researchers, Payment, payments, per, per-beneficiary, percent, percentage, PET, PhD, Philadelphia:, physician, population, Positron, previous, procedure, procedures, quality, questions, raises, rate, rates, ray, region, regional, regions, reported, resonance, results, risk, Roentgen, Roentgenology. "Underlying, Roentgenology. Source American, said, said. 'When, said. While, scans, Seattle, seems, services, services. This, should, show, showed, side., smaller, Society, statistics, studies, study, substantial, substantially, such, summary, supplier, than, that, the, theAmerican, there, think, this, Thomas, to, Tomography, types, underutilization, University, upon, utilization, variation, variations, vary, very, WA, was, We, wide, with, within 
No Comments »PEM Scanners May Reduce Unnecessary Breast Biopsies And Offer An Alternative For Women Who Cannot Tolerate MRI
Posted by admin on Nisan 5th, 2010
New data from an NIH-sponsored, multi-site study of hundreds of women with newly diagnosed breast cancer shows that Positron Emission Mammography (PEM) may reduce unnecessary breast biopsies. The study found that PEM was significantly more precise at identifying benign and cancerous lesions, in what scientists call “Positive Predictive Value” or [...]
Posted in Genel Tags: "PPV, (NIH, (PEM), 388, 5R44CA103102), a, About, accrued, across, additional, Also, alternate, alternative, an, and, Anne, are, ARS, article, Arundel, as, associated, at, available, be, been, benign, benign. This, Berg, better, biopsies., Boca, body, breast, but, by, California, call, can, cancer:, cancerous, cannot, Carolina, Center, Center. Source Naviscan, centers, claustrophobia, Clinic-Scripps, clinical, commercially, common, community, comparably, complaint, costs, country:, course, critical, data), demonstrated, determining, diagnosed, do, due, emission, exam, exam. PEM, examined, examining, fewer, finding, For, found, from, gadolinium, Grant, Green, habitus., had, have, help, high, high-resolution, high-risk, higher, Hopkins, Hospital, hundreds, identify, identifying, imaging, implants, improvement, in, Inc, influences, information, Investigator, is, issue, its, January, Johns, Journal, leading, legitimate, lesion, lesions, location, looking, M.D., malignant, Mammography, manufactured, may, Mean, Medical, metabolic, metallic, more, mr, MRI, multi-site, Naviscan, new, newly, newly-diagnosed, NIH-sponsored, Norris, North, not, Number, of, on, only., or, other, outcome, particularly, Patient, patients, payors, percent, PET, Ph.D., phase, physician, physicians, positive, Positron, powerful, precise, predictive, principal, procedures, published, radiology, Raton, reaction, reasons., recently, recommended, reduce, reducing, refused, regarding, require, requiring, results, said, scanners, scientists, screening, Scripps, sensitivity, show, showed, shows, significant, significantly, since, six, size, Southern, specificity, Spring, study, such, suspicious, system., systems, tendency, test, than, that, the, Therefore, these, this, those, to, tolerate, tool, tool. "The, trauma, treat, treatment, trial., ultimately, ultrasound, University, unnecessary, Use, value, was, ways, welcomed, well, Wendie, were, What, whether, who, why, with, woman., women No Comments »Startup to develop new solid-state technology at UCLA for use in medical imaging
Posted by admin on Nisan 5th, 2010
While today many medical-imaging needs are being met with traditional vacuum tube–based technology, large segments of the X-ray–imaging market are poorly served, and there is widespread demand for both performance improvements and cost reductions.
Based on groundbreaking patented technology licensed from UCLA, startup company Radius Health is developing a lightweight, flat-panel [...]
Posted in Genel Tags: "Moving, 'clean', (MAX), a, able, accelerate, access, across, activities, additional, Address, Advanced, allows, an, and, application., applications, applied, are, areas, Array, as, assistant, associated, Astronomy, at, atoms, available, Barbara, based, be, been, being, benefit, biochemistry, Biology, blocks, both, breakthroughs, bring, building, bulky, by, California, can, capable, Center, CEO, chemistry, chip, Cleanroom, clinical, CNSI, collaborations, colleagues, College, commercial, companies, company, computational, computing, conduct, consumption, control, controlled, cost, could, crystal, culture, current, dedicated, deliver, delivering, demand, Department, deployment, develop, developed, developing, development, diagnostic, discoveries, displays., due, dynamic, early-stage, economic, educators, efforts, eight, electronic, electronics, electrons, eliminating, emission, emitter, employing, enabling, energy, engineering, entrepreneurial, environment, established, Evans, expects, expensive, extend, extended, extensive, facilitate, facilities, federal, flat, flat-panel, flexible, For, foster, foundry, fragile, from, fueling, funding., generate, generated, generates, generation, Gil, grants, greatly, groundbreaking, growth, has, health, help, high-voltage, his, housing, imaging, important, importantly, improvements, in, incubation, incubator, industry, information, innovative, Institute, Integrated, interdisciplinary, into, is, it, James, jointly, journey, key., knowledge, Lab, laboratory, landmark, large, leaders;, leading, licensed, lightweight, like, lowering, maintain, make, Manhattanville, manipulating, many, Mark, market, Materials, mathematics, measuring, medical-imaging, met, Microemitter, microfabricated, microfabrication, million, mission, modifying, molecules., moment, most, move, Nanofabrication, nanoscale, NanoSystems, nanotechnology;, nearer, need, needs, new, next, of, offers, on, on-campus, operating, options, originate, our, panel., panels, parallel, particle, partnerships, past, patented, performance, periods, Ph.D., Physics, poorly, portability, potential, potentially, power, process., processes, produced, product, production, professor, Program, projects, pyroelectric, pyroelectric-based, radar, Radioactive, radiology, Radius, real, reductions., reliability, replaced, required, research, resource, Rodney, Rosenzweig, safer, said, same, Santa, science, scientist, scientists, see, segments, selected, semiconductor, served, shared, shielding, short, significant, social, solid-state, source, sources., space, spectrum, stable, startup, state)., states, story, structures, such, supplies, systems, technology, than, that, the, them, there, these, this, Thus, time, to, today, traditional, train, transformational, transformers, Travish, tubes, tube–based, type, UC, UCLA, uniformly, United, unlike, US, Use, using, vacuum, vacuum-tube, visual, voltage, was, We, well-being, while, whose, widespread, will, with, within, without, works, World, x-ray, X-rays, X-ray–imaging, Yoder, York., — No Comments »Energetic Quanta: Gamma-Rays
Posted by admin on Aralık 30th, 2009
Energetic Quanta: Gamma-Rays
Gamma rays…
Are emitted from the nucleus to trim excess energy.
Tend to carry higher energies than X-rays, but this does not have to be the case
For example, after a larger energy decay particle (e.g. a beta particle) is emitted, the nucleus may still be slightly unstable (i.e., the atom [...]
Posted in medicine, radiation biology, radiology Tags: (i.e., 3), a, after, amount, an, and, are, at, atom, be, Beta, but, by, carried, carry, case For, cesium-137, cobalt-60, contrast, Decay, does, e.g., electromagnetic, electron-volts., emission, emitted, emitters:, energetic, Energetic Quanta: Gamma-Rays, energies, energized, energy, energy. Important, EV., example, examples, excess, excited, from, gamma, Gamma-Rays Gamma, have, higher, in, is, isomeric, larger, light, lose, may, means, millions, not, nucleus, of, or, particle, photons, potassium-40, provides, quanta., ranging, ray, rays, rays…, relative, remains, scale, Simplified, slightly, smaller, spectrum, state)., still, technetium-99m, Tend, than, the, this, thousands, to, trim, unstable, visible, wavelength, with, X-rays 2 Comments »Sub-Atomic Forces & Radioactive Decay
Posted by admin on Aralık 30th, 2009
Sub-Atomic Forces & Radioactive Decay
The core of an atom exists precariously: massive repulsive electromagnetic forces between closely-assembled protons in the nucleus must be counterbalanced. “Stability” thus reflects the balance of power between strong nuclear force, weak nuclear force, and electromagnetic force. The nuclear binding energy quantifies the energy necessary to maintain coherence.
Isotopes are atoms with [...]
Posted in medicine, radiation biology, radiology Tags: "Stability", (masses, (proton, a, an, and, are, atom, atomic, atoms, balance, be, between, binding, Biology, both, brief, but, by, closely-assembled, coherence. Isotopes, configuration., core, count), counterbalanced., Decay, diagnostic, different, electromagnetic, elements, emission, encountered, energetic, energies, energy, exists, following, force, Forces, have, Heavier, in, insufficient, is, likely, maintain, massive, may, more, must, necessary., neutrons)., nuclear, nucleus, Number, of, overview., particles, photons, power, precariously:, protons, quanta., quantifies, Radiation, Radioactive, radioisotopes, reflects, repulsive, same, stable, strong, Sub-Atomic, Sub-Atomic Forces & Radioactive Decay, such, the, therapeutic, Thus, to, undergo, weak, with No Comments »