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Radiation dose reduction in liver cancer
October 03, 2005A new digital angiography flat panel system reduces the radiation dose to patients undergoing interventional treatment for liver cancer by about one-fourth, a new study shows.
The study compared the radiation dose to patient's skin during transcatheter arterial embolization, a procedure that blocks the flow of a blood to a tumor. Doses were assessed for 12 patients using a new angiography unit with a digital flat-panel system and 12 using a conventional unit for angiographic imaging.
The maximal skin dose to the patients ranged from 510-1,882 mGy using the conventional unit, said Shigeru Suzuki, MD of Teikyo University School of Medicine in Tokyo, Japan. Dr. Suzuki is the lead author of the study. That compares to 130-467 mGy for the flat panel system, he said.
"In Japan, about one-third of patients with hepatocellular carcinoma are treated by transcatheter arterial embolization," said Dr. Suzuki. "It should be kept in mind that serious radiation skin injuries may be caused by interventional procedures," said Dr. Suzuki. "It is important for physicians to do everything they can to use the lowest dose of radiation," he said.
American Roentgen Ray Society
"In Japan, about one-third of patients with hepatocellular carcinoma are treated by transcatheter arterial embolization," said Dr. Suzuki. "It should be kept in mind that serious radiation skin injuries may be caused by interventional procedures," said Dr. Suzuki. "It is important for physicians to do everything they can to use the lowest dose of radiation," he said.
American Roentgen Ray Society
Radiation Dose Current Events and Radiation Dose News RSSFirst use of antibody and stem cell transplantation to successfully treat advanced leukemia
For the first time, researchers at Fred Hutchinson Cancer Research Center have reported the use of a radiolabeled antibody to deliver targeted doses of radiation, followed by a stem cell transplant, to successfully treat a group of leukemia and pre-leukemia patients for whom there previously had been no other curative treatment options.
Study of concurrent radiotherapy, chemotherapy shows promise in small cell lung cancer
Treating limited stage small cell lung cancer(LSCL) with a combination of accelerated high-dose radiotherapy and chemotherapy has shown encouraging results.
Short-term hormone therapy and intermediate dose radiation increases survivial for early stage prostate cancer
Short-term hormone therapy given prior to and during intermediate dose radiation treatment for men with early stage prostate cancer increases their chance of living longer, compared to those who receive the same radiation alone.
Task force develops new radiation guidelines for brachytherapy
Radiation dose delivered to the prostate and nearby organs in every brachytherapy procedure should be carefully analyzed using post-implant CT or MRI and uniformly documented in every patient.
Identification of highly radiosensitive patients may lead to side effect-free radiotherapy
An international group of scientists has taken the first step on the road to targeting radiotherapy dosage to individual patients by means of their genetic characteristics.
Radiologists find a technique to significantly reduce patient radiation dose during CT angiography
Radiologists have discovered that prospective electrocardiogram (ECG) gating allows them to significantly reduce the patient radiation dose delivered during computed tomography (CT) angiography, a common noninvasive technique used to evaluate vascular disease.
Comprehensive cardiac CT scan may give clearer picture of significant heart disease
A team of researchers led by Massachusetts General Hospital (MGH) radiologists has developed a computed-tomography-based protocol that identifies both narrowing of coronary arteries and areas of myocardial ischemia - restricted blood flow to heart muscle tissue - giving a better indication of clinically significant coronary artery disease.
Radiologists, medical physicists work to make imaging procedures safer
The Radiological Society of North America (RSNA) reaffirmed its commitment to patient safety today in responding to a study and accompanying perspective on radiation dose from medical imaging procedures in the New England Journal of Medicine (NEJM).
Iterative reconstruction technique significantly reduces patient radiation dose during CT scans
Computed tomography (CT) scans are responsible for more than two thirds of the total radiation dose associated with medical imaging exams.
Perform non-radiation ERCP during pregnancy: Is it safe?
Hormonal changes during pregnancy increase the lithogenicity of bile and impair gallbladder emptying, which create a favorable environment for gallstone formation.
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