DOTmed Home MRI Oncology Ultrasound Molecular Imaging X-Ray Cardiology Health IT Business Affairs
News Home Parts & Service Operating Room CT Women's Health Proton Therapy Endoscopy HTMs Mobile Imaging
SEARCH
Current Location:
>
> This Story


Log in or Register to rate this News Story
Forward Printable StoryPrint Comment

 

CT Homepage

Philips to shutter Dunlee parts facility in Illinois, move operations to Germany Says GTC replacement market in 'significant' decline

Survey finds radiologists want greater involvement in patient care Workload and time constraints stand in the way

Zebra-Med enters deep learning image analysis market in Europe, Australia and New Zealand Machine learning is changing radiology

Siemens to unveil Symbia Intevo Bold SPECT/CT at SNMMI Meeting the growing demand for multi-modality imaging

CT imaging can help determine optimal treatment for hip fracture patients Evaluating muscle condition to guide care decisions

Study finds many early-stage breast cancer patients receive unnecessary testing Research to be presented at ASCO annual meeting

Isotropic Imaging to commercialize UC Davis' breast CT scanner Pending regulatory approval

Yale researchers create app to drive smarter CT utilization Enabling a more meaningful dialogue between physician and patient

Incidental findings from chest scans costly, lengthen hospital stays Imaging for chest pain often leads to findings of little clinical significance

Using data to bring precision medicine to prostate cancer detection Guidelines reduce diagnostic bone and CT scans by over 40 percent, save $275,000

Low dose radiation 'likely helps
prevent' cancer: experts

Experts assert no evidence links X-ray or CT to future cancer diagnoses

By Lauren Dubinsky and Gus Iversen

By-and-large, the health care industry is on a mission to reduce radiation exposure to the bare minimum and avoid it entirely whenever possible — but some experts have taken the position that this attitude is misguided and potentially hazardous to patients.

An article published this month in The Journal of Nuclear Medicine makes the case that the nature of radiation exposure is fundamentally misunderstood.

Story Continues Below Advertisement

Asset management simplified

Now, there's a powerful asset management tool that helps you effectively manage, monitor and control your clinical assets with improved financial and operational performance. InfoView - helping hospitals make better decisions.Visit us at AAMI, booth 715



The confusion goes back at least as far as Hermann Muller's 1946 Nobel Lecture, in which he claimed, “all radiation is harmful, regardless of how low the dose and dose rate.” This way of thinking is known as the linear no-threshold hypothesis (LNTH) and this isn't the first time it's come under fire.

Study author, Jeffry A. Siegel — who is the president and CEO of Nuclear Physics Enterprises, an international nuclear physics consulting firm specializing in clinical trial design for radionuclide therapy agents, regulatory issues, quantitative diagnostic imaging acquisition and analysis, and radiation dosimetry — makes the case that Muller's argument is scientifically invalid.

Although it has repeatedly been shown that the dose-response relationship may reasonably be considered to be linear down to a certain threshold, (i.e. "half as much is half as bad") Siegel and the other authors argue, at a certain point this relationship changes.

"Credible evidence of imaging-related low-dose (<100 mGy) carcinogenic risk is nonexistent; it is a hypothetical risk derived from the demonstrably false LNTH," they wrote. "On the contrary, low-dose radiation does not cause, but more likely helps prevent, cancer."

Some evidence toward the possible benefits of very low radiation dose exposure was published in 2015 in PLOS ONE, where researchers showed that exposing fruit flies to radiation could actually make them live longer.

As Low As Reasonability Achievable, or ALARA, refers to the widely accepted principle that using the minimum necessary radiation dose for CT, X-ray and nuclear medicine imaging exams is the best medicine — and despite a lack of evidence regarding the dangers of low dose — many regulatory policies are based on it.

Siegel's team points to studies that demonstrate the LNTH and ALARA philosophies focus solely on molecular damage and disregard the protective, biological responses that can take place on a very low level.
  Pages: 1 - 2 >>

CT Homepage


You Must Be Logged In To Post A Comment

Advertise
Increase Your
Brand Awareness
Auctions + Private Sales
Get The
Best Price
Buy Equipment/Parts
Find The
Lowest Price
Daily News
Read The
Latest News
Directory
Browse All
DOTmed Users
Ethics on DOTmed
View Our
Ethics Program
Gold Parts Vendor Program
Receive PH
Requests
Gold Service Dealer Program
Receive RFP/PS
Requests
Healthcare Providers
See all
HCP Tools
Jobs/Training
Find/Fill
A Job
Parts Hunter +EasyPay
Get Parts
Quotes
Recently Certified
View Recently
Certified Users
Recently Rated
View Recently
Certified Users
Rental Central
Rent Equipment
For Less
Sell Equipment/Parts
Get The
Most Money
Service Technicians Forum
Find Help
And Advice
Simple RFP
Get Equipment
Quotes
Virtual Trade Show
Find Service
For Equipment
Access and use of this site is subject to the terms and conditions of our LEGAL NOTICE & PRIVACY NOTICE
Property of and Proprietary to DOTmed.com, Inc. Copyright ©2001-2017 DOTmed.com, Inc.
ALL RIGHTS RESERVED