Ideal doses of IMRT defined to reduce treatment side effects for head and neck cancer
...al hundred small beams of varying intensities that pass through normal tissue without doing significant damage, but converge to give a precise dose of radiation at the tumor site. IMRT can potentially limit the adverse side effects from radiation while increasing the intensity of doses that can be given t...Can a child's final adult height actually be predicted?
Children pass through growth phases at various points during adolescence before reaching final adult height. Some children begin their growth phases early on while others are "late bloomers." Many parents and children may be curious to know how tall the child wi...Near infrared laser device can measure brain oxygen levels
...iques. The discovery that near-infrared light can pass through the scalp and skull to examine levels of hemoglobin and other light absorbing compounds of the brain was made at Duke by Frans Jobsis, Ph.D., in 1977. "It has always been a challenge to directly measure the oxygen levels in the brain," said D...Purdue's gold nanorods brighten future for medical imaging
...cle is that light in the visible spectrum does not pass through tissue very well," said Alexander Wei, an associate professor of chemistry who worked with Cheng and other Purdue researchers, including Philip S. Low, a professor of chemistry. Imaging methods might be developed using laser pulses in longer ...ASH Self-Assessment Program receives approval for maintenance of certification credit
...still need to verify their medical credentials and pass a secure exam. What has significantly changed is the requirement to secure 100 points through "lifelong learning" activities. Through completion of the ASH-SAP, physicians can earn 60 out of 100 learning points toward recertification. "The ASH-SAP ...WA team uses baby tooth to solve death mystery
... discounted fears that the couple's son could also pass the condition on to any children he might have," said Professor Ravine. He said that although extracting DNA from unconventional sources such as teeth was common in forensic medicine, it was not often used in a case such as this. "Using this sort of ...Clinical trials with immunotherapy for breast and colorectal cancer
...lthy cells, with only very subtle differences that pass under the radar screen of the body's immune cells," said Savio Woo, PhD, Professor and Chairman of the Department of Gene and Cell Medicine at Mount Sinai School of Medicine. "We use gene transfer technology to insert an immune enhancing gene into th...Focus on lung cancer: How to prevent and treat it
...ting antibody-nicotine combination is too large to pass through the blood to the brain, resulting in less nicotine in the brain. Animal studies have confirmed that the vaccine works by reducing and also slowing the amount of nicotine that enters the brain, reducing nicotine's addictive effect. Preliminar...Scientists show how thinking can harm brain cells
...erve cell, and synapses, the places where impulses pass from neuron to neuron. Injury to dendrites characterized by swelling or beading, loss of dendrite spines, and reduction in size is seen in HIV-1-associated dementia and Alzheimer's. In laboratory studies, brain cells and slices were exposed to plat...Connective tissue cells from lungs fused with heart muscle to form biological pacemaker
...tures that permit electrical signals, the ions, to pass in and out of cells. Within three minutes of fusion, the cells showed signs of forming their own potassium ion channels and began generating their very own electrical current, one much like the heart's natural pacing cells would. The effect lasted a...Brain morphing technology simplifies the surgical treatment for movement disorders
...nsert the electrodes. To work, the electrodes must pass through small nuclei deep in the brain that are about the size of a pea and are not visible in brain scans or to the naked eye. The researchers writing in a special issue of the journal IEEE Transactions on Medical Imaging published this month repo...Mildly depressed people more perceptive than others
...uch as the one identified in this study. "Once you pass the threshold, you're into something very different," she says....Study uncovers placental microtransfusions lead to transmission of AIDS virus during childbirth
...in the placenta, is very big -- usually too big to pass through the natural barrier that protects babies from disease-causing organisms mothers sometimes carry before birth," Meshnick said. "We figured that if we found it in blood from the umbilical cord, which links the placenta to the baby, that would b...Disruption of gene interaction linked to schizophrenia
...nerve and its target cell across that gap. Signals pass from one cell on one side of the gap to another cell on the other side. The increased release of excitatory chemicals glutamate and proline due to PRODH deficiency inhibited the ability of the synapse to undergo a change called long-term potentiation...Hopkins study proves cochlear implants prevent or reverse damage to brain's auditory nerve system
...which store the transmitter chemicals necessary to pass sound signals between nerve cells; and the specialized nerve membranes that receive the signal were small and dome-shaped. In the deaf cats without implants, synaptic vesicles were absent, and the specialized nerve membranes were large and flat. N...Advance in cholera bacteria points to new treatment and vaccine
...tinal colonization process, and the bacteria would pass harmlessly through the body. The authors acknowledge that in addition to GlcNAc, there may be other points of attachment that could still be responsible for allowing the bacteria to bind to the intestine, and they are currently focusing their resear...Tiny self-assembling cubes could carry medicine, cell therapy
...tually will allow medicine or therapeutic cells to pass through. The researchers use metallic solder to form hinges along the edges between adjoining squares. When the flat shapes are heated briefly in a lab solution, the metallic hinges melt. High surface tension in the liquified solder pulls each pair ...What can change in the brain? Electrical synapses, research shows
...nels - which allow for lightening-quick signals to pass between neurons via ionic current - is only beginning to be understood. Last year, the Connors lab published research showing that electrical synapses help set the brain's master circadian clock....'Coaching' in labor makes little difference, UT Southwestern researchers say
...ge to void" the volume at which a woman wanted to pass urine. However, over time, the bladder function can return to normal. "Whether or not these functional changes have long-term consequences, I'm not ready to say," said Dr. Kenneth Leveno, professor of obstetrics and gynecology and senior author of bo...Black baby girls more likely to live when born very premature
... families decide just to hold their babies as they pass away, while others adopt a wait-and-see approach or request all measures be taken to save the preemie's life. "It's very hard to make rules as to which babies should be resuscitated," said Herman A. Hein, a professor of pediatrics at the University o...