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What Is A PET Scan? How Does A PET Scan Work?
A PET scan uses radiation, or nuclear medicine imaging, to produce 3-dimensional, color images of the functional processes within the human body. PET stands for positron emission tomography. The machine detects pairs of gamma rays which are emitted indirectly by a tracer (positron-emitting radionuclide) which is placed in the body on a biologically active molecule. The images are reconstructed by computer analysis. Modern machines often use a CT X-ray scan which is performed on the patient at the same time in the same machine.
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Physical Therapists Say Appropriate Exercises Can Help Keep Weekend Warriors On The Ice
The excitement of the 2009 Stanley Cup Playoffs will inspire young players and weekend warriors to hit the ice. But, traveling up to 30 miles an hour on a quarter inch blade of steel and stopping instantly will put anyone at risk for injury. According to American Physical Therapy Association (APTA) spokesperson Mark Mortland, PT, ATC, team physical therapist of the Pittsburgh Penguins, there are special precautions one can take to help avoid the multiple injuries that can occur in this high-speed, high-impact sport.
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E-health Enables More Personalized Medicine; Group Fights For Digital Patient Rights
Tonia Odom, a 35-year-old patient with rheumatoid arthritis, a sick father and a young son, each of whom has multiple health problems, has found some relief to the problems of managing her families" array of illnesses in at a Duke University clinic that"s a model of the "medical home" approach to medicine, the New York Times reports. "As President Obama and Congress try to create a national system that provides better care for more people at lower cost, you are likely to hear a lot more about this idea. The term, coined by the American Academy of Pediatrics in 1967, is admittedly confusing. It does not mean a return to house calls. Nor need it apply only to people with complex health problems like those of the Odom family."
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A Woman's Partner Status Found To Be Relevant For Her Interest In The Opposite Sex

A study by neuroscientist Heather Rupp and her team found that a woman"s partner status influenced her interest in the opposite sex. In the studyÂð, published in the March issue of Human Nature, women both with and without sexual partners showed little difference in their subjective ratings of photos of men when considering such measures as masculinity and attractiveness. However, the women who did not have sexual partners spent more time evaluating photos of men, demonstrating a greater interest in the photos. No such difference was found between men who had sexual partners and those who did not. "These findings may reflect sex differences in reproductive strategies that may act early in the cognitive processing of potential partners and contribute to sex differences in sexual attraction and behavior," said Rupp, assistant scientist at The Kinsey Institute for Research in Sex, Gender and Reproduction at Indiana University in the US. For the study, 59 men and 56 women rated 510 photos of opposite-sex faces for realism, masculinity/femininity, attractiveness, or affect. Participants were instructed to give their "gut" reaction and to rate the pictures as quickly as possible. The men and women ranged in age from 17 to 26, were heterosexual, from a variety of ethnic backgrounds and were not using hormonal contraception. Of the women, 21 reported they had a current sexual partner; 25 of the men reported having a sexual partner. This is the first study to report whether having a current sexual partner influences interest in the opposite sex. Other studies have demonstrated that hormones, relationship goals and social context influence such interest. "That there were no detectable effects of sexual partner status on women"s subjective ratings of male faces, but there were on response times, which emphasizes the subtlety of this effect and introduces the possibility that sexual partner status impacts women"s cognitive processing of novel male faces but not necessarily their conscious subjective appraisal," the authors wrote in the journal article. The researchers also note that influence of partner status in women could reflect that women, on average, are relatively committed in their romantic relationships, "which possibly suppresses their attention to and appraisal of alternative partners." Reference: ÂðRupp H et al. 2009. Partner Status Influences Women"s Interest in the Opposite Sex. Human Nature DOI 10.1007/s12110-009-9056-6 Renate Bayaz Springer


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