Skip 
Navigation Link

1215 South Walnut Ave.
Demopolis, AL 36732 map map 

Access to Care: 800.239.2901

Health Policy & Advocacy
Resources
Basic InformationMore InformationLatest News
Big Pharma's Marketing to Docs Helped Trigger Opioid Crisis: StudyDisrupted Sleep Plagues Hospital Patients, But New Program Might HelpOpioid Prescriptions Almost Twice as Likely for Rural vs. Urban AmericansClimate Change Already Hurting Human Health, Review ShowsCalling All Blood Donors …Even Older Drugs Are Getting Steep Price Hikes, Study FindsAs Medical Marketing Soars, Is Regulation Needed?Radiation Doses From CT Scans Vary WidelyU.S. Leads Health Care Spending Among Richer Nations, But Gets LessIs Your State a Hotspot for Obesity-Linked Cancers?Health Tip: Choose the Right DoctorFDA Warns Companies on Dangerous, Unapproved Stem Cell TreatmentsMore U.S. Kids Dying From Guns, Car AccidentsRoad Rules on Smartphone Use Are Saving Bikers' Lives, TooAHA: Should Pacemakers, Defibrillators Be Recycled -- and Reused in Others?California Farm Tied to E. coli Outbreak Expands Recall Beyond Romaine LettuceHealth Tip: Use Medical Devices SafelyCalifornia Farm Implicated in Outbreak of E. coli Tied to Romaine LettuceFentanyl Now the No. 1 Opioid OD KillerHospitalizations Rising Among the HomelessElectronic Health Records Bogging Docs DownMore Are Seeking Mental Health Care, But Not Always Those Who Need It MostMillions of Americans Still Breathing Secondhand Smoke: ReportNew Approach to Opioid Crisis: Supervised Heroin Injection Programs?Many Americans Unaware of Promise of Targeted, 'Personalized' Medicine: PollAs Gun Violence Grows, U.S. Life Expectancy DropsMost Americans Lie to Their DoctorsOpioid Crisis, Suicides Driving Decline in U.S. Life Expectancy: CDCWant to Learn CPR? Try an Automated KioskHealth Surrogates Often in Dark About Loved One's WishesRestaurant 'Health Grade' Posters Could Mean Safer DiningSmoking Bans Might Help Nonsmokers' Blood PressureWarmer Winters, More Violent Crimes?Are Food Additives Good or Bad? Consumer Views VaryDrug Studies in Children Often Go Unfinished: StudyFDA Moves to Restrict Flavored E-Cig Sales, Ban Menthol CigarettesAgeism Costs Billions in Health Care DollarsAmerica Is Worried About Antibiotic ResistanceRed Cross Issues Urgent Call for Blood Ahead of the HolidaysUnder Pressure, Juul Withdraws Most Flavored E-Cigs From MarketMany Drugstores Won't Dispense Opioid Antidote as RequiredNew Cholesterol Guidelines Focus on Personalized ApproachAHA: Defibrillators Can Help Kids Survive Cardiac Arrest, TooFDA Will Ban Many Flavored E-CigarettesU.S. Smoking Rates Hit Record LowOnly a Quarter of Opioid Painkillers Taken After Most SurgeriesHome Health-Care Tests: Proceed With CautionFDA Takes on Flatulent CowsWhy Bystanders Are Less Likely to Give CPR to WomenCellphone Radiation Tied to Upped Odds for Cancer -- in Rats
Questions and AnswersVideosLinksBook Reviews
Related Topics

Health Insurance
Healthcare

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.