Posts Tagged ‘f’

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Canon TX-20 Full Auto Tonometer Receives FDA Clearance

Canon TX-20 Full Auto Tonometer Receives FDA Clearance

Canon U.S.A., Inc., is a leading provider of consumer, business-to-business, and industrial digital imaging solutions. With more than $45 billion in global revenue, its parent company, Canon Inc. (NYSE:CAJ), ranks fourth overall in patent holdings in the U.S. in 2010†, and is one of Fortune Magazine’s World’s Most Admired Companies in 2011. Canon U.S.A. is committed to the highest levels of customer satisfaction and loyalty, providing 100 percent U.S.-based consumer service and support for all of the products it distributes.Medical technology

Canon has received FDA 510(k) clearance for the TX-20 full-auto non-contact tonometer. The device can be used with a touch of one button when in fully automatic mode, or a peak intraocular pressure (IOP) can be set so that the device issues a warning message when that pressure is reached.

From the press release: If a high IOP is detected, a warning message is displayed. The operator can enter any threshold value on the unit’s settings screen to activate the warning system for that value. When in Full Auto mode, the TX-20 Tonometer is a one-touch operation for IOP measurement of both eyes. With one press of the start button, the unit automatically aligns and measures the intraocular pressure of both eyes. The compact and lightweight TX-20 Tonometer weighs approximately 33 pounds and comfortably fits on an instrument table with a Canon Non-Mydriatic Retinal Camera (each sold separately). Keeping the Canon ophthalmic units next to one another can help to expedite the exam process.

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Transform iPhone into High-quality Medical Imaging Device

Transform iPhone into High-quality Medical Imaging Device

Researchers Transform iPhone into High-quality Medical Imaging Device

Advanced, life-saving capabilities become a simple add-on to handheld technology you already use

WASHINGTON, Oct. 3—In a feat of technology tweaking that would rival MacGyver, a team of researchers from the University of California, Davis has transformed everyday iPhones into medical-quality imaging and chemical detection devices. With materials that cost about as much as a typical app, the decked-out smartphones are able to use their heightened senses to perform detailed microscopy and spectroscopy.  The team will present their findings at the Optical Society’s (OSA) Annual Meeting, Frontiers in Optics (FiO) 2011, taking place in San Jose, Calif. Oct. 16-20.

The enhanced iPhones could help doctors and nurses diagnose blood diseases in developing nations where many hospitals and rural clinics have limited or no access to laboratory equipment. In addition to bringing new sensing capabilities where they are needed most, the modified phones are also able transmit the real-time data to colleagues around the globe for further analysis and diagnosis.

“Field workers could put a blood sample on a slide, take a picture, and send it to specialists to analyze,” says Sebastian Wachsmann-Hogiu, a physicist with UC Davis’ Department of Pathology and Laboratory Medicine and the Center for Biophotonics, Science and Technology, and lead author of the research to be presented at FiO.

Microscope Makeover

The group is not the first to build a smartphone microscope. “But we thought we could make something simpler and less expensive,” Wachsmann-Hogiu says.

His first attempt took simplicity too far. “We started with a drop of water on the camera’s lens,” he says. “The water formed a meniscus, and its curved surface acted like a magnifying lens. It worked fine, but the water evaporated too fast.”

Then the team turned to ball lenses. These are finely ground glass spheres that act as low-powered magnifying glasses. The team used a 1-millimeter-diameter ball lens that costs $30-40 USD in their prototype, but mass-produced lenses could be substituted to reduce the price.

To build the microscope’s lens, Kaiqin Chu, a post-doctoral researcher in optics, inserted a ball lens into a hole in a rubber sheet, then simply taped the sheet over the smartphone’s camera.

At 5x magnification, the ball lens is no more powerful than a child’s magnifying glass. Yet when paired with the camera of a smartphone, the microscope could resolve features on the order of 1.5 microns, small enough to identify different types of blood cells.

There are two reasons why such low magnification produces such high-resolution images. First, ball lenses excel at gathering light, which determines resolution. Second, the camera’s semiconductor sensor consists of millions of light-capturing cells. Each cell is only about 1.7 microns across. This is small enough to capture precisely the tiny high-resolution image that comes through the ball lens.

Ball lenses pose some unique problems. The curvature of their sphere bends light as it enters the ball, distorting the image, except for a very small spot in the center. The researchers used digital image processing software to correct for this distortion. They also used the software to stitch together overlapping photos of the tiny in-focus areas into a single image large enough for analysis.

Even though smartphone micrographs are not as sharp as those from laboratory microscopes, they are able to reveal important medical information, such as the reduced number and increased variation of cells in iron deficiency anemia, and the banana-shaped red blood cells characteristic of sickle cell anemia.

Wachsmann-Hogiu’s team is working with UC Davis Medical Center to validate the device and determine how to use it in the field. They may also add features, such as larger lenses to diagnose skin diseases and software to count and classify blood cells automatically in order to provide instant feedback and perhaps recognize a wider range of diseases.

Simple Spectrometer

When researchers need additional diagnostic tools, the microscope could be swapped for a simple spectrometer that also uses light collected by the iPhone’s camera.

Spectrometers smear out light from an object, separating it into its composite wavelengths in much the way a prism breaks up white light in the familiar colors of the rainbow. Since atoms and molecules absorb very specific wavelengths when exposed to light, it is possible to tease out the chemical signature of materials by studying their spectra.

Like the microscope, the iPhone’s spectrometer takes advantage of smartphone imaging capabilities. “We had worked with spectrometers for diagnostics, and didn’t think it would be too far a stretch,” Wachsmann-Hogiu says.

The spectrometer that the researchers added to the iPhone is easy to build. It starts with a short plastic tube covered at both ends with black electrical tape. Narrow slits cut into the tape allow only roughly parallel beams of light from the sample to enter and exit the tube. It is this grating that smears, or spreads, the light into a spectrum of colors that scientists can use like a fingerprint to identify various molecules.

“If you didn’t have the slits, light would come in from all different angles and you could never separate it properly,” explains Zachary Smith, an optics post-doctoral researcher in the lab.

Though the spectrometer is still in its early stages, the researchers believe it could measure the amount of oxygen in the blood and help diagnose chemical markers of disease.

Because smartphone instruments are powerful and cheap, Wachsmann-Hogiu believes schools could use them to enrich science classes. Spectrometers could help illustrate lessons about light and energy. Microscopes could unveil an invisible world of sugar crystals, pollen grains, and microscopic organisms.

By intelligently exploiting smartphone features, Wachsmann-Hogiu’s group promises to both save lives and illuminate science.

The presentation, “Microscopy and Spectroscopy on a Cell Phone,” by Kaiqin Chu, Zachary J. Smith, Alyssa R. Espenson, Denis Dwyre, Stephen Lane, Dennis Matthews, and Sebastian Wachsmann-Hogiu of the Center for Biophotonics, University of California, Davis, Medical Center, Sacramento, Calif. will take place Wednesday, Oct. 19 at 12 p.m. at the Fairmont San Jose Hotel.

EDITOR’S NOTE: High-resolution images of the iPhone and image samples taken with the device are available upon request (see gallery below). Please contact Angela Stark, astark@osa.org.

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How to Lose Weight , Liposuction Surgery or a Healthy Lifestyle

How to Lose Weight , Liposuction Surgery or a Healthy Lifestyle

Abstract

Background: High-intensity focused ultrasound presents a noninvasive approach to body sculpting for nonobese patients. The purpose of this study was to evaluate the safety and effectiveness of a high-intensity focused ultrasound device for sculpting of the abdomen and flanks.

Methods: Adults (aged 18 to 65 years) with subcutaneous abdominal fat greater than or equal to 2.5 cm thick who met screening criteria were randomized to receive high-intensity focused ultrasound treatment of the anterior abdomen and flanks at energy levels (a total of three passes each) of 47 J/cm2 (141 J/cm2 total), 59 J/cm2 (177 J/cm2), or 0 J/cm2 (no energy applied, sham control). The primary endpoint was change from baseline waist circumference at the iliac crest level at posttreatment week 12. Subjective aesthetic assessments included the Global Aesthetic Improvement Scale and a patient satisfaction questionnaire. Safety assessments included adverse events, laboratory values, and physical examinations.

Results: For the primary endpoint, in the intent-to-treat population, statistical significance versus sham was achieved for the 59-J/cm2 (–2.44; p = 0.01) but not the 47-J/cm2 treatment group (–2.06 cm; p = 0.13). In a per-protocol population, statistical significance versus sham was achieved for both the 59-J/cm2 (–2.52 cm; p = 0.002) and the 47-J/cm2 treatment groups (–2.10 cm; p = 0.04). Investigator subjective measures of global aesthetic improvement and patient satisfaction also favored each active treatment versus sham. Adverse events included mild to moderate discomfort, bruising, and edema. Laboratory values and physical examinations were unremarkable.

Conclusions: Treatment with this high-intensity focused ultrasound device reduced waist circumference and was generally well tolerated for noninvasive body sculpting. Reduction in waist circumference was statistically significant with both active treatments (per protocol).

CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, II.

How is the LipoSonix Treatment Different?

Many nonsurgical treatment systems do not penetrate and destroy the fat found beneath the skin. Most of the energy from these systems is absorbed by the skin tissue (dermis and epidermis) not the targeted fat tissue underneath.

The LipoSonix treatment is unique among body-contouring technologies. By using a high-energy output and a high frequency, the LipoSonix treatment creates a thermal effect that permanently destroys the targeted fat in the abdomen and love handles.

The LipoSonix treatment is also unique because of its ability to focus its energy at specific depths in the fat without damaging surrounding tissue or non-targeted areas. This efficient delivery of energy into the fat tissue can result in a treatment time of about 1 hour (office visit time may vary).

Other Ultrasound Technologies

Compared with other ultrasound body-contouring technologies, the LipoSonix treatment uses higher energy and higher frequency to create a controlled thermal effect to destroy targeted fat in the treatment area.

Laser and Radio-Frequency (RF) Technologies

Compared to the LipoSonix treatment, low-energy systems such as laser or radio-frequency have less penetration into the targeted fat. This is because the energy these systems use is reflected and absorbed by the skin. The LipoSonix system uses high-intensity focused ultrasound energy, which penetrates through the skin layers and into the targeted fat without harming skin or surrounding tissues.

About the LipoSonix Treatment

The LipoSonix treatment uses noninvasive, high-intensity focused ultrasound to permanently get rid of targeted fat around your waistline (abdomen and love handles) without surgery, which may leave you with a slimmer, more contoured waistline.

The average waistline reduction after a single, 1-hour treatment is about 2.5 cm or one dress or pant size. Results are typically seen in 8 to 12 weeks (which is the time needed for the body to naturally remove the treated fat). Office visit time and individual results may vary.

The LipoSonix treatment is not a replacement for liposuction surgery or a healthy lifestyle, or a way to lose weight.

During treatment, you may feel discomfort, pain, cold, prickling, tingling, or warmth. After treatment, you may experience pain (discomfort), bruising, redness, and swelling, which are generally described (or rated) as mild.

Is the LipoSonix Treatment Right for You?

Are you close to your ideal size but have unwanted fat around your waistline that you just can’t seem to get rid of even with diet and exercise?
You might be a candidate for the noninvasive, nonsurgical LipoSonix treatment.
Click here to find the physician/clinic closest to you and arrange for a consultation.

Appropriate Candidates for the LipoSonix Treatment Must:

  • Be able to pinch-an-inch (2.5 cm) of fat in the treatment area.
  • Have a body mass index (BMI) equal to or less than 30.
  • Have good overall health.
  • Have realistic expectations about the results.

Ask your doctor if the LipoSonix treatment is right for you.

Treatment Results

After one LipoSonix treatment, 91% of patients surveyed in a clinical study reported improvement in their abdominal flatness. In fact, one treatment of about one hour may result in a patient reducing their waistline by an average of 2.5 cm, or about one dress or pant size. Results are typically seen in 8 to 12 weeks. Individual results and office visit times may vary.

The LipoSonix treatment is not a replacement for liposuction surgery or a healthy lifestyle, or a way to lose weight.

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How to Grow Adult Stem Cell

How to Grow Adult Stem Cell

Scientists find ‘better way’ to grow adult stem cells

A stem cell makes adhesions (shown in green) to the new “nano-patterned” plastic surface
A new plastic surface which overcomes the difficulties associated with growing adult stem cells has been developed, according to scientists.

Standard surfaces have proved limited for growing large amounts and retaining the stem cells’ useful characteristics.

It is hoped the discovery could lead to the creation of stem cell therapies for re-growing bone and tissue, and also for conditions such as arthritis.

The study was carried out by Glasgow and Southampton universities.

The new “nano-patterned” surface was created using a manufacturing process similar to that used to make Blu-ray discs.

The surface is covered with tiny pits, which the researchers said made it more effective in allowing stem cells to grow and spread into useful cells for therapy.

Currently, when adult stem cells are harvested from a patient, they are then cultured in a laboratory to increase the quantities of cells and create a batch of sufficient volume to kick-start the process of cellular regeneration.


The implications for research and future interventions for patients with arthritis and other musculoskeletal diseases are substantial”

Prof Richard OreffoUniversity of Southampton

At this point they can be reintroduced back into the patient.

The process of culturing is made difficult because stem cells grown on standard plastic tissue culture surfaces do not always expand to create new stem cells but instead create other cells which are of no use in therapy.

Stem cell expansion can be boosted by immersing the cells in chemical solutions, but the scientists said these methods were limited in their effectiveness.

Dr Matthew Dalby, from the University of Glasgow, led the research alongside colleague Dr Nikolaj Gadegaard and Prof Richard Oreffo of the University of Southampton.

‘Stem cell factories’

Mr Dalby said: “This new nano-structured surface can be used to very effectively culture mesencyhmal stem cells, taken from sources such as bone marrow, which can then be put to use in musculoskeletal, orthopaedic and connective tissues.

“If the same process can be used to culture other types of stem cells too – and this research is under way in our labs – our technology could be the first step on the road to developing large-scale stem cell culture factories, which would allow for the creation of a wide range of therapies for many common diseases such as diabetes, arthritis, Alzheimer’s disease and Parkinson’s disease.”

The surface is covered with tiny pits, which help stem cells to grow and spread

He said the group hoped to make the surface commercially available.

Prof Oreffo added: “It is important to realise the ability to retain skeletal stem cell phenotype using surface topography offers a step change in current approaches for stem cell biology.

“The implications for research and future interventions for patients with arthritis and other musculoskeletal diseases are substantial.”

The study was funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and the University of Glasgow.

The paper, Nanoscale surfaces for the long-term maintenance of mesenchymalstem cell phenotype and multipotency, was published in the journal Nature Materials.

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Pediatric Vision Scanner Identifies Vision Loss in Children When It’s Most Treatable

Pediatric Vision Scanner Identifies Vision Loss in Children  When It’s Most Treatable

Detecting “lazy eye” earlier

Device identifies vision loss in children as young as 2, when it’s most treatable

July 7, 2011

Boston, Mass.–A simple, seconds-long screening exam with a handheld scanning device may enable pediatricians to identify “lazy eye,” a loss of vision in a structurally normal eye, in children as young as 2, report ophthalmologists at Children’s Hospital Boston, who tested the device in 202 children.

Lazy eye or amblyopia, affecting 3 to 5 percent of all children, is the leading cause of vision loss in childhood. But it can be hard to detect in young children, who are the most responsive to treatment, because they cannot reliably communicate what they’re seeing or read eye charts.

“The eyes of a child with amblyopia can look perfectly fine, even while one eye is slowly losing vision,” says senior author David Hunter, MD, chief of ophthalmology at Children’s Hospital Boston. “Once a child reaches school age, treatment is less likely to restore useful vision. We’d really like to begin treating them when they’re three years old – or younger.”

Amblyopia usually results from a misalignment of the eyes (strabismus) or one eye having a weaker focusing power (anisometropia). In both cases, one eye is underused, and vision deteriorates as the brain loses its ability to interpret visual information from that eye. If the problem is detected early, ideally before age 4 or 5, doctors can reverse it by patching the stronger eye or blurring it with eyedrops, forcing the child to use the weaker eye.

Clinical testing of a prototype of the device, known as the Pediatric Vision Scanner, is described in the July 7 issue of the journal Investigative Ophthalmology and Visual Science. As children look at a blinking red light, a low-power laser scans their eyes to measure their alignment (known as binocularity), taking five readings over 2.5 seconds.

Hunter and colleagues tried out the scanner in 154 patients at Children’s ophthalmology clinicand 48 children with normal vision, aged 2 to 18.  Children with readily identifiable strabismus, other eye disease or developmental delay were excluded.

A binocularity score below 60 percent (fewer than three focusing successes in five attempts) was considered a “refer,” indicating a need for further examination. Among2- to 6-year-old children, binocularity scores averaged 9 percent for those with amblyopia and 8 percent for those with strabismus, versus 89 percent in the control group. The scanner could detect amblyopia even in the absence of measurable strabismus, and documented improved binocularity in these children after treatment.

“We designed the device to detect strabismus, but the fact that the device could detect any form of amblyopia was completely unexpected – and a key advance for making more accurate referrals,” says Hunter, also a professor of ophthalmology at Harvard Medical School.

Overall, the scanner had an overallsensitivity and specificity of 96 percent for detecting amblyopia or strabismus as compared with gold-standard ophthalmologic tests. Hunter hopes the device will be adopted into general pediatric practice and used to screen toddlers and preschoolers for amblyopia during annual well-child visits. Eye exams done just before entry to school, mandated in some states, come too late to treat amblyopia most effectively, he says.

“This technology has the potential to give pediatricians the tool they need to quickly and easily identify those kids most in need of a specialist eye exam as soon as they develop a problem,” Hunter says. “As a result, we expect that health insurers and government agencies will embrace this test, which should reduce the cost of care while at the same time improving quality and efficiency, potentially saving vision in hundreds of thousands of children.”

The scanner is the result of 20 years of research funding from a variety of agencies. A lighter, more user-friendly prototype of the device is currently undergoing clinical testing at several independent centers.

Research fellow Sjoukje Loudon, MD, was first author on the paper, along with co-authors Caitlin Rook, CO, Deborah Nassif, PhD, and Nadya Piskun, PhD. The device was developed with the help of David L. Guyton, MD, and Boris I. Gramatikov, PhD, of Johns Hopkins University, and Robert Winsor, MSEE and Knute Ray, BS, formerly of the Space Telescope Science Institute.

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CathSource App Brings Cardiac Catheterization To Life With Videos And Images On The IPhone & IPad

CathSource App Brings Cardiac Catheterization To Life With Videos And Images On The IPhone & IPad

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Download Latest Medical iPhone/iPad Dermatology App Out For General Practitioners ,Nurses and Medical Students

Download Latest Medical iPhone/iPad Dermatology App Out For General Practitioners ,Nurses and Medical Students

DermoMap, a new iPhone/iPad dermatology app out of Spain, is helping identify skin conditions using multiple hi-def photos for each disease and extensive explanations.  It is being targeted to both medical professionals as well as the pubic, and is designed to have both clinical and more lay language in the text so everyone can take advantage of it.

DermoMap is an interactive tool that serves as a diagnostic aid for general practitioners and nurses and as a study tool for medical students.  It is available in English and Spanish.

By listing a patient’s symptoms and the afflicted area of the body, the user can narrow his search from descriptions of the one-hundred most common skin problems that account for 95% of all diagnoses.  The user also can compare high resolution images of these conditions with personal photos.

It features information about a 100 of the most common dermatological diseases, with over 300 high definition photos, multiple images of each disease, and a built-in etymological dictionary with more than 100 terms.

It features explanations conducted with meticulous scientific rigor that are clear and understandable for both medical and nonmedical audience.

It is updated periodically when new progress is made in medical knowledge.

Product page: DermoMap…

iTunes link…

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Olympus Medical Technology Receives FDA Approval for ScopeGuide Dedicated Endoscopes

Olympus Medical Technology Receives FDA Approval  for ScopeGuide Dedicated Endoscopes

ScopeGuide is an exclusive Olympus technology designed to provide a real-time 3D image of the shape and configuration of the colonoscope inside the body. ScopeGuide assists with finding the optimal location to apply abdominal pressure, easier, more confident scope insertion, and early loop identification. The use of ScopeGuide during colonoscopies may lead to less patient discomfort.

Center Valley, PA., May 24, 2011 — Olympus, a precision technology leader in designing and delivering innovative solutions in Medical and Surgical Products among other core businesses, announces that its revolutionary ScopeGuide®  technology can now be used within the United States.  The new instrument available from Olympus America Inc., is designed to assist GI physicians, colorectal surgeons and nurses during a colonoscopy to visualize the colonoscope as it travels through the colon.

ScopeGuide employs magnetic endoscopic imaging (MEI) to produce a three-dimensional view of the scope and its location within the colon in real-time. A number of small electromagnetic transmission coils located within the colonoscope itself generate a weak magnetic field, which is picked up by the ScopeGuide receiver. The received signals allow the ScopeGuide processor to calculate the location and orientation of each transmission coil, which is used to generate the 3D rendering of the scope, displayed on a screen. A separate handheld 3D marker helps an assistant to visualize where abdominal pressure will be most effective.

Dr. Douglas Howell, Director of the Pancreaticobilary Center at Maine Medical Center describes Olympus’ ScopeGuide as, “A major improvement in the quality of everyday colonoscopy.”

An exclusive Olympus technology, ScopeGuide’s 3D visualization allows the endoscopist to see loop formations as they are occurring for quicker and more effective loop management. It can also assist with scope insertion and help optimize scope handling, which may shorten procedure times and minimize patient discomfort, even during difficult colonoscopies.

Christopher Williams, M.D., honorary physician at St. Mark’s Hospital in London explains, “Using ScopeGuide gives an instant overview of colonoscope insertion – so the endoscopist has anatomic certainty, the confidence of knowing exactly what is happening, and can optimize each situation and procedure.”
ScopeGuide will be available for purchase within the U.S. later this summer. To schedule an on-site demo of the Olympus ScopeGuide, please contact your sales representative.

ENHANCED VISUALIZATION

By seeing the shape of the entire scope as it moves through the body, ScopeGuide provides additional visual information that is particularly helpful during difficult colonoscopies. The endoscopist can evaluate the extent of looping and get a better sense of which rotational maneuvers will be required to straighten out various loop formations that can occur during colonoscopy.

EXCEPTIONAL PERFORMANCE

ScopeGuide dedicated endoscopes, including the high-definition CF-H180DL colonoscope, deliver Olympus’ renowned optics along with its proprietary variable stiffness technology for exceptional imaging performance and maneuverability.

About Olympus Medical Systems
Olympus develops solutions for healthcare professionals that help improve outcomes and enhance quality of life for their patients. By enabling less invasive procedures, innovative diagnostic and therapeutic endoscopy and early stage lung cancer evaluation and treatments, Olympus is transforming the future of healthcare.

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Causes Of Female Infertility

Causes Of Female Infertility

In any fertility work-up, both male and female partners are tested if pregnancy fails to occur after a year of regular unprotected sexual intercourse. Fertility testing should especially be performed if a woman is over 35 years old or if either partner has known risk factors for infertility.

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Sanofi Pasteur’s Fluzone Intradermal Flu Vaccine Approved in U.S.

Sanofi Pasteur’s Fluzone Intradermal Flu Vaccine Approved in U.S.

Sanofi Pasteur has previously licensed microinjection intradermal influenza vaccines, marketed as Intanza® or IDflu® vaccines, in more than 40 countries including Australia, Canada and countries in Europe.

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