Tag: "dye" at medical news
New Ultrasound Technique Is Alternative To Cerebral Angiography
...d following the arteries up into thehead. There, a dye
is released into the blood that can be seen on x-rays. But the catheter itself can rupture the plaque and send pieces into thebrain, or trigger an arterial response that may form blood clots, leavingpatients at risk of stroke not only during...
Misdiagnosis Looms As Demand Increases For New Breast Cancer Biopsy
...ound the primary tumor. In the operating room,blue dye
is injected into the same area. "So in the operating room, we have twomethods available to look for the sentinel node. We can visually identify thelymphatic path going directly to the first draining node, and we can use ahand-held gamma probe to trac...
Study Finds Lymph Node Surgery Unnecessary For Many Breast Cancer Patients
... sentinel node biopsy, in which radioactivity or a dye
is used toidentify which specific nodes are the first stop from the site of the tumor. These nodes are then analyzed for cancer cells. The Duke decision model doesnot consider sentinel node biopsy, Parmigiani said. Co-authors on the study are Donald...
Clogged Neck Artery May Warn Of Heart Attack As Well As Stroke
...rwent angiography, an imaging procedure in which a dye
isinjected into the artery to the heart to provide an X-ray of the blood vesselsof the heart. Each person received noninvasive ultrasound tests of the carotidarteries to search both the left and right sides, and branches, forobstructions. Researche...
Melanoma Patients' Sentinel Lymph Nodes (SLNS) Play A Strong Role In Disease Prognosis, UCSF Study Reports
...eads to a person's lymphnodes) by injecting a blue dye
and/or radiocolloid substance that enterslymphatic... the success rate of harvesting the SLN using blue dye
alone is 82percent, by radioactive mapping is approximately 94 percent, and by combinationmethod is ...
3-D magnetic resonance imaging safer way to diagnose heart disease
...giography, the testdoes not require injection of a dye
or exposure to X-ray. Thus, it causesconsiderably...rteries themselves that do not require injecting a dye
into a bloodvessel." Manning and his research colleagues used a sophisticated MRA approach to enhanc...
Wake Forest researchers develop new technique to diagnose narrowed heart
...plications. These include allergicreactions to the dye
released into the vessels that enables X-ray equipment totrack blood flow, bleeding from the vessel where the catheter is inserted and,in rare cases, a heart attack. In a study of 30 patients who had both MRI scanning and cardiaccatheterizati...
New laser treatment allows patients to swallow and breath easier
... or windpipereceive an injection in the arm with a dye
called Photofrin, a photosensitizingdrug. Over the next two days, the drug will largely be eliminated from mosthealthy tissue, but will selectively remain in cancer cells. Next, physicians place a flexible scope into the patient's throat. Through ...
Analysis suggests women treated for breast cancer do better with axillary node dissection
...sentinelnode, Scott-Conner said. After injecting a dye
around the tumor or using aradioactive tracer, cancer specialists can then look for the lymph node that hasthe marker concentration. This technique has proven useful for detectingmelonoma. "The idea is if you take out the sentinal lymph node and test...
More bad news for cocaine users: Drug can triple risk of aneurysm
...rwent an imaging test called angiography, in which dye
is injected into the arteries and an x-ray is then taken. The average age of those in the study was 44, and 80 percent were male. "We found that 30 percent of these patientsm--three out of 10--had aneurysms in a heart artery. This is an extremely ...
Impotence may be early warning of heart disease
...quently underwent angiography, where a radioactive dye
is injected into the heart arteries and then an X-ray is taken in order to detect blockages. Six of the 20 had blockages in all three major heart arteries, seven had two arteries that showed narrowing, and one artery was blocked in the remaining sev...
Computerized analysis of heart arteries shows no benefits of hormone therapy
... used cardiac catheterization, a test that injects dye
into the arteries, to measure narrowing in the heart's arteries caused by a buildup of cholesterol. As vessel disease progresses, these narrowings worsen. A total of 309 older women with heart disease were randomly assigned to take estrogen (Premar...
'Smart scalpel' detects cancer cells in seconds
...cell cytometers require cells to be stained with a dye
in order to examine them. This lengthy process may take hours to alter the cells, and is of little immediate help to the patient, who has already been sewn back together. The Sandia biocavity laser, based in part on semiconductor fabrication techniqu...
Humans can regrow liver from bone marrow
...ues and then stained them with chromosome-specific dye
(Y chromosomes fluoresced as light green dots, X chromosomes as red). Between 5 and 20 percent of the women's liver cells (hepatocytes) and bile-duct cells (cholangiocytes) exhibited green dots. "Since females carry only X chromosomes in their geneti...
Hormone therapy doesn't slow heart disease, despite improvements in cholesterol
... used cardiac catheterization, a test that injects dye
into the arteries, to measure narrowing in the heart's arteries caused by a buildup of cholesterol. As vessel disease progresses, the arteries become smaller. A total of 309 older women with heart disease were randomly assigned to take estrogen (Prem...
Brown researchers find new photoreceptor and visual system in the eye
...xperiments, the researchers injected a fluorescent dye
into the tiny part of a rats brain that governs the 24-hour clock cycle. The dye
traveled back to the new photoreceptors in the eye. The researchers then found the dye-filled cells,...
New study says people take mental stress to heart
...es. Radionuclide angiography involves injecting a dye
to label red blood cells. This lets researchers view the working heart. Wall motion abnormalities are specific markers of ischemia, Sheps says. Radionuclide imaging provides us a motion picture of the heart beating. Normally there is a nice symmet...
Scientific society offers development sessions for industrial members
...al confirmation of early instances of Royal Purple dye
(ca. 1300-1200 B.C.), wine (ca. 5400-5000 B.C.), beer (ca. 3500-3100 B.C.), and the organic remains of funerary feast of King Midas in ancient vessels. Greg Loehr, president, Resin Research and Greg Loehr Surfboards, Indian Harbor Beach, Fla. Sport...
Spiral scan sees stroke blockage more clearly
... symptoms and initial CT scan without the contrast dye
were completed. The last was when all the data, including results from the helical CT scan, was available. At each point the neurologists were asked to give the stroke location, how much brain tissue was affected, which blood vessel was obstructed...
Genetic connection in link between permanent hair dye use and bladder cancer risk
...orting a causal association between permanent hair dye
use and bladder cancer risk," said Manuela Gago-Do.... "They implicate the arylamines contained in hair dye
solutions as the carcinogenic substances responsible for bladder cancer development in the users of ...
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