24-Hour Crisis Hotline: (877)SAFEGBC or (877)723-3422 Mental Health & Substance Abuse Issues

6502 Nursery Drive, Suite 100
Victoria, TX 77904
(361)575-0611
(800)421-8825

Medical Disorders
Resources
Basic InformationLookupsLatest News
Money Worries Around Food May Spur MigrainesCould Antibacterial Triclosan Weaken Women's Bones?Buyer Beware: Many Stem Cell Clinics Lack Docs Trained in TreatmentsHealth Tip: Treating a Dog BiteVets With PTSD Face Higher Odds for Early Death From Multiple CausesFDA Expands Cystic Fibrosis Treatment Approval to Children Ages 6 to 12AHA News: Half of U.S. Adults Should Monitor Blood Pressure at Home, Study SaysWidely Prescribed Class of Meds Might Raise Dementia Risk9/11 Dust Linked to Prostate Cancer in First RespondersOcean Swimming Causes Skin Changes: StudyNew Drug Combats Leading Cause of DwarfismAHA News: What Migraine Sufferers Need to Know About Stroke RiskNorovirus Fears Stir Recall of Frozen BlackberriesFlying Insects in Hospitals Carry 'Superbug' GermsU.S. Cases of Infant Gut Illness Plummet After Vaccine IntroducedAHA News: This Faulty Gene May Help Predict Heart Muscle DiseaseCell Mapping Provides New Insights About AsthmaHealth Tip: Recognizing Balance DisordersThe Safer Way to Ease Post-Surgical PainLong Work Hours Tied to Higher Odds for StrokeSudden Death Can Occur Even in Well-Controlled EpilepsyStatins May Lower Risk of Stroke After Cancer RadiotherapyExperimental Drug Shows Early Promise Against Sickle Cell DiseaseFitness in Middle Age Cuts Men's Odds for COPD LaterVitamin D Supplements May Not Help Your HeartHow to Head Off a Pain in the NeckSprouts Supermarkets Recalls Frozen Spinach Due to Listeria FearsA-Fib Can Raise Dementia Risk, Even in Absence of StrokeAnother Climate Change Threat: More 'Flesh-Eating' Bacteria?Heading to Europe This Summer? Get Your Measles ShotAiling Heart Can Speed the Brain's Decline, Study FindsHealth Tip: Preventing GlaucomaHead Injuries Tied to Motorized Scooters Are Rising: StudyOverweight Kids Are at Risk for High Blood PressureHot Water Soak May Help Ease Poor Leg CirculationHealth Tip: Understanding RosaceaHealth Tip: Causes of Swollen Lymph NodesAHA News: Study Provides Rare Look at Stroke Risk, Survival Among American IndiansCDC Opens Emergency Operations Center for Congo Ebola OutbreakScared Safe: Pics of Sun's Damage to Face Boost Sunscreen UseNo Needle Prick: Laser-Based Test Hunts Stray Melanoma Cells in BloodBats Are Biggest Rabies Danger, CDC SaysEmgality Receives First FDA Approval for Treating Cluster HeadacheZerbaxa Approved for Hospital-Acquired Bacterial PneumoniaBlood From Previously Pregnant Women Is Safe for Donation: StudyStudy Refutes Notion That People on Warfarin Shouldn't Eat Leafy GreensCancer Survivors Predicted to Top 22 Million by 2030Your Guide to a Healthier Home for Better Asthma ControlHigh Blood Pressure at Doctor's Office May Be More Dangerous Than SuspectedAHA News: 3 Simple Steps Could Save 94 Million Lives Worldwide
Questions and AnswersLinks
Related Topics

Diabetes

Radiation Doses From CT Scans Vary Widely

HealthDay News
by -- Steven Reinberg
Updated: Jan 7th 2019

new article illustration

MONDAY, Jan. 7, 2019 (HealthDay News) -- CT scans diagnose many serious conditions and illnesses, but they expose patients to levels of radiation that aren't always consistent and may be harmful, a new study finds.

The large differences in the doses of radiation patients are exposed to appear to be caused by who is doing the scanning and not differences in patients or equipment, researchers found.

It should be possible, the researchers said, to standardize how the scans are set, to avoid giving patients too much radiation, which can increase their risk of cancer.

According to the study, radiation doses vary by patients, hospitals and countries. In many cases, radiation could be cut by 50 percent without reducing the quality of the image or its diagnostic accuracy.

A team lead by Dr. Rebecca Smith-Bindman, a professor in the department of radiology and biomedical imaging epidemiology and biostatistics at the University of California, San Francisco, analyzed dose data for over 2 million CT scans from 151 institutions in seven countries.

The study included scans of the abdomen, chest and head done between November 2015 and August 2017.

The investigators found that patient characteristics, type and make of scanner, and type of hospital where the scan was done had little effect on differences in the amount of radiation used.

For example, after taking into account patient factors, a fourfold range in radiation doses still existed in abdominal scans. Similar variations were found for chest and combined chest-and-abdomen scans.

But when Smith-Bindman's group adjusted for technical factors -- how the scanners were used by the medical staff -- the variations in doses nearly disappeared.

The report was published Jan. 2 in the journal BMJ.

The findings suggest that optimizing doses to a consistent standard is possible, the researchers said in a journal news release. They recommended that more education is needed and that optimum target doses should be set.

More information

Harvard University Medical School has more on radiation from scans.