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ADHD linked to depressed dopamine activity in the brain

Adults with attention-deficit/hyperactivity disorder (ADHD) show a blunted response to the drug methylphenidate (Ritalin), which increases brain dopamine levels, according to a report in the August issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

7 Aug 2007

CT-guided radiofrequency ablation effective in eradicating small malignant kidney tumors

A relatively new, minimally invasive treatment was 100 percent successful in eradicating small malignant kidney tumors in a study of more than 100 patients, report researchers from Wake Forest University Baptist Medical Center.

3 Aug 2007

Imaging technique accurate in aneurysm detection and therapy planning

Multidetector computed tomography (MDCT) angiography is highly accurate in depicting intracranial aneurysms, according to a study published in the August issue of Radiology.

1 Aug 2007

Interferon alpha and sorafenib combined work better than either alone against kidney cancer

A combination of two drugs works better than either drug alone for patients with renal cell carcinoma, the most common form of kidney cancer, according to a pilot study led by Duke University Comprehensive Cancer Center researchers.

1 Aug 2007

The future of Alzheimer's disease research

Imagine the day when a routine visit to the family doctor includes a simple blood test to predict the risk for developing Alzheimer's disease (AD).

26 Jul 2007

PET scans show if radiation is shrinking lung tumors

Lung cancer patients may not need to wait till their radiation treatment is over to know if it worked.

19 Jul 2007

New study explains placebo effect

Why do some people experience a “placebo effect” that makes them feel better when they receive a sham treatment they believe to be real — while other people don't respond at all to the same thing, or even feel worse?

19 Jul 2007

Cancer risk from radiation during cardiac CT scans studied

An analysis based on computerized simulation models suggests that the lifetime risk of cancer associated with radiation exposure from a computed tomography (CT scan) coronary angiography varies widely, with the risk greater for women and younger patients, according to a study in the July 18 issue of JAMA .

18 Jul 2007

Suped-up computed tomography scanners

By borrowing techniques used in telecommunications technology, computed tomography (CT) scanners may eventually see data collection speeds increase by hundreds of times, leading to better images, faster imaging procedures, and potentially lower x-ray exposures.

18 Jul 2007

Life near the highway bad for the heart

According to German researchers living near a busy highway may be bad for your heart as it raises the risk of hardening of the arteries.

16 Jul 2007

New minimally invasive method of treating cancer

A team of biomedical engineers at Virginia Tech and the University of California at Berkeley has developed a new minimally invasive method of treating cancer, and they anticipate clinical trials on individuals with prostate cancer will begin soon.

9 Jul 2007

Study shows inaccuracies in cardiac PET-CT imaging

Current PET-CT scanners with standard commercial software designed to provide images of the heart are falsely indicating coronary artery disease in as many as 40 percent of patients, according to a study published today on the cover page of the Journal of Nuclear Medicine.

4 Jul 2007

Hearing loss and von Hippel-Lindau disease

Patients with the genetic disorder von Hippel-Lindau disease may suddenly experience hearing loss because of a tumor-associated hemorrhage in the inner ear, according to a study in the July 4 issue of JAMA.

4 Jul 2007

More fat may have some advantages for type 1 diabetes and heart disease

Researchers at the University of Pittsburgh Schools of the Health Sciences studying links between an early sign of heart disease called coronary artery calcification and body fat have found that, paradoxically, more fat may have some advantages, at least for people particularly women who have type 1 diabetes.

26 Jun 2007

Estrogen use lowered one risk factor for heart disease among some younger postmenopausal women

A follow-up study to the federally funded Women's Health Initiative should help allay one concern in a subset of women in their 50s who are considering taking estrogen to relieve hot flashes.

23 Jun 2007

Three-dimensional ultrasound scanner provides in-depth view of the brain

Biomedical engineers at Duke's Pratt School of Engineering have adapted a three-dimensional ultrasound scanner that might guide minimally invasive brain surgeries and provide better detection of a brain tumor's location.

23 Jun 2007

Do common treatments for ADHD increase risk of drug abuse?

Parents, doctors, and others have wondered whether common treatments for attention-deficit hyperactivity disorder (ADHD) inadvertently predispose adolescents to future drug abuse.

19 Jun 2007

Researchers create first 3-D optical images of human breast cancer in patients based on tissue fluorescence

Fluorescence diffuse optical tomography, or FDOT, relies on the presence of fluorophore molecules in tissue that re-radiate fluorescent light after illumination by excitation light of a different color.

14 Jun 2007

Early results from Alzheimer's neuroimaging studies could speed research

Disease researchers may be able to reduce the time and expense associated with clinical trials, according to early results from the Alzheimer's Disease Neuroimaging Initiative (ADNI), a public-private research partnership organized by the National Institutes of Health.

14 Jun 2007

Newer iodine-containing contrast agents safe for children

Allergic-like reactions to newer iodine-containing contrast agents (nonionic contrast media), are rare in children according to a recent study conducted by researchers from the University of Michigan Medical Center and C.S. Mott Children's Hospital both in Ann Arbor.

8 Jun 2007