Saturday, May 26, 2012

Google Updates Search App for iPhone, iPad

Google Search iOS app Google appsGoogle has released a new version of its iPhone search app, boasting a revamped interface, full screen image searches and improved search speeds.

The update makes app pages load faster and increases the speed with which autocomplete search suggestions appear.

Google's interaction designer, Noah Levin, claimed that the update means results will update with each letter added, though we still saw a slight delay when typing in a blog post announcing the launch of the application.

The app also makes viewing multiple pages easier, adding a swipeable menu at the bottom of its user interface that lets you easily switch between open web pages.

The feature extends to its search categories, meaning users can swipe to move between search, image and map modes.

Google has enhanced the app's voice command support, letting users search the web orally. In our initial tests the feature worked well, with the service easily understanding all our requests, no matter how obscure.

The update also makes searching for images much easier, so that rather than rows of thumbnail images, pictures now load as a full screen grid, letting you tap an image to get additional details on it and swipe through the search results.

The app also comes with a save option, letting users download the selected image simply by holding down on it.

The search service also adds Google apps onto Apple's iOS, housing a link to other services like Gmail, Calendar, Docs, Google+, YouTube, Blogger. The apps arrival follows speculation that Apple is planning to add Google Maps in its next major iOS overhaul.

V3 offers a review of the new Google Search app for the iPhone.

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Monday, May 21, 2012

Screening for Lung Cancer Might Benefit Those at Highest Risk

SUNDAY, May 20 (HealthDay News) -- Using low-dose CT scans to screen for lung cancer might save the lives of patients at the greatest risk for the disease, a new analysis suggests.

However, the risks of screening for others aren't clear, the researchers added.

"We have insight into risks, but they are hard to weigh and estimate," said lead researcher Dr. Peter Bach, from Memorial Sloan-Kettering Cancer Center in New York City.

"It's clear that when you screen you find cancers that otherwise wouldn't appear, and that leads to overtreatment," he said. "It is clear that CTs find lots of things that aren't cancer. About one in five people have something found that will require some sort of follow-up."

There is also an excess radiation risk. In one trial, screening prevented about three deaths per 1,000 people screened, while one in 2,500 might develop cancer from the CT scan, Bach said.

However, in the right population it could theoretically prevent thousands of deaths a year, he explained.

Namely, that population is the heaviest smokers, those who smoke for 30 pack-years or more. A pack-year is the number of cigarettes smoked over time. This means at least a pack a day for 30 years or two packs a day for 15 years.

"For these patients, we recommend that doctors might suggest screening and discuss the risks and benefits," Bach said. "But, no one should be telling people that they must have this test or advertise that it's a lifesaving procedure that will prevent you from dying from lung cancer."

In the end, "there is no substitution for smoking cessation in terms of health benefits," Bach noted.

The report was published online May 20 in the Journal of the American Medical Association.

For the study, Bach's team reviewed 21 studies about the benefits and risks of low-dose CT screening for lung cancer.

One of the studies, the National Lung Screening Trial, included more than 53,000 people and found that screening reduced deaths from lung cancer by 20 percent, the researchers said.

The results of that trial were published last June in the New England Journal of Medicine.

However, the other, smaller trials found no benefit from screening, Bach's team noted.

The study authors found that, overall, 20 percent of patients had a scan that needed follow-up, but only 1 percent had lung cancer.

The studies were done in teaching hospitals with experienced radiologists and cancer doctors, Bach noted.

This report is the basis of the screening recommendations adopted by the American College of Chest Physicians and the American Society of Clinical Oncology.

The recommendations state that heavy smokers aged 55 to 74, and those who have quit in the past 15 years, should be offered screening.

But screening should only be done at hospitals that do a lot of this kind of screening. These are usually large or teaching hospitals, because the value of this screening at community hospitals is not known, Bach added.

Dr. Norman Edelman, chief medical officer at the American Lung Association, called the new study a "thoughtful analysis of an important topic."

The American Lung Association conducted a similar review and came to similar conclusions, he said.

The data suggest that screening heavy smokers is likely to reduce death from lung cancer by about 20 percent and all-cause mortality by about 10 percent, he said.

"Given the large cohort to which it pertains, this would be a significant public health achievement," Edelman stated.

However, there remain many unsettled issues, he said.

"One major issue is whether the same results would be observed in the community as opposed to the controlled academic settings in which the study was done," Edelman said. "Accordingly, the American Lung Association report emphasizes the need for screening to be done in centers which can provide low-dose CT screening and a comprehensive multi-specialty environment, so that finding of suspect nodules can be followed up with appropriate [care] rather than undue risk."

Robert Smith, director of cancer screening at the American Cancer Society, said, "These recommendations are consistent" with screening guidelines from similar medical groups.

However, he believes these guidelines will be refined over the years as new data become available.

"The question remains, who else might you endorse lung cancer screening for," Smith said. "Suppose someone had a 35 pack/year history and they were 35 years old, or what if they were 45 years old and had started smoking at the age of 12."

There may be other levels of risk where screening might be beneficial, Smith said: "We will probably learn a lot from trials that are currently under way."

More information

For more on lung cancer, visit the American Lung Association.

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