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Latest X-ray computed tomography Stories

High-contrast, High-resolution CT Scans Possible At Low Dose
2012-06-05 06:55:54

Soft body tissue can now be imaged with incredible detail using X-rays thanks to a new low dose CT-scan technique Scientists have developed an X-ray imaging method that could drastically improve the contrast of computed tomography (CT) scans whilst reducing the radiation dose deposited during the scan. The new method is based on the combination of the high contrast obtained by an X-ray technique known as grating interferometry with the three-dimensional capabilities of CT. It is also...

2012-06-04 19:30:45

Imaging with PET/CTresults in significant effect on patient management For those with esophageal cancer, initialstaging of the disease is of particular importance as it determines whether to opt for a curative treatment or palliative treatment. Research presented in the June issue of The Journal of Nuclear Medicine shows that physicians using positron emission tomography (PET)/computed tomography (CT) can discern incremental staging information about the cancer, which can significantly...

2012-05-21 12:50:01

Peter B. Bach, M.D., of the Memorial Sloan-Kettering Cancer Center, New York, and colleagues conducted a systematic review to examine the evidence regarding the benefits and harms of low-dose computerized tomography (LDCT) screening for lung cancer, which is the leading cause of cancer death. "Most patients are diagnosed with advanced disease, resulting in a very low 5-year survival rate," the authors write. "Renewed enthusiasm for lung screening arose with the advent of LDCT imaging, which...

2012-05-16 05:00:36

(Ivanhoe Newswire) — The mere thought of getting a standard colonoscopy makes some people shudder in their seats, and unfortunately, prevents many people from receiving the critically important check-up. But there is a new procedure that may make the whole process a bit easier to endure. Typically, the standard optical colonoscopy involves the examination of the internal surface of the colon using a lit fiber-optic tube with a camera at the end. The preparation is what drives people...

2012-05-15 11:30:52

Contrast-enhanced ultrasound is an effective, noninvasive method for monitoring patients who undergo endovascular repair for abdominal aortic aneurysms, according to a new study published in the journal Radiology. "Our findings support the addition of contrast-enhanced ultrasound as a complementary tool in the follow-up of these patients," said Rosa Gilabert, M.D., Ph.D., from the Hospital Clinic at the University of Barcelona in Spain. An abdominal aortic aneurysm occurs when the large...

2012-05-15 09:11:16

Computerized 'virtual cleansing' helps identify lesions most likely to become cancerous A CT-scan-based form of virtual colonoscopy that does not require laxative preparation appears to be as effective as standard colonoscopy in identifying the intestinal polyps most likely to become cancerous. In the May 15 issue of Annals of Internal Medicine, a Massachusetts General Hospital (MGH)-based research team reports finding that the new technique, which uses computer-aided systems both to...

2012-05-15 05:16:13

(Ivanhoe Newswire) — Monitoring aneurysms with a less invasive option! Researchers are saying a simple contrast ultrasound is the answer. An abdominal aortic aneurysm occurs when the large blood vessel that supplies blood to the abdomen, pelvis and legs becomes abnormally large or balloons outward. Abdominal aortic aneurysms can occur in anyone, but are most commonly found in men over the age of 60 with one or more risk factors. The aneurysm places stress on the wall of the aorta...

2012-05-14 05:08:00

(Ivanhoe Newswire) -- Respiratory movement during radiotherapy makes it difficult to hit the right treatment target and this in turn can lead to an under-dose of radiation to the tumor, or a potentially toxic over-dose to the surrounding healthy tissue. Getting this right is a real challenge for the radiotherapist, but new techniques are helping to deliver the correct dose to the right place Deep Inspiration Breath Hold (DIBH) can spare the heart when irradiating left-side breast cancer...

New FDA Draft Proposal On X-Ray Imaging For Children
2012-05-10 06:40:12

Connie K. Ho for RedOrbit.com The U.S. Food and Drug Administration (FDA) recently announced a proposal to encourage X-ray manufacturers to consider children´s safety in the development of new imaging devices. The FDA is recommending that manufacturers who create new X-ray imaging devices include protocols and instructions for use on pediatric patients. The draft proposal by the FDA also advocates that companies who cannot demonstrate safe and effective use of the X-ray imaging...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.