Featured Research

from universities, journals, and other organizations

Obesity An Increasing Obstacle To Medical Diagnosis

Date:
July 25, 2006
Source:
Radiological Society of North America
Summary:
The increase of obesity in the United States doubled the number of inconclusive diagnostic imaging exams over a 15-year period, according to a study featured in the August issue of Radiology. Researchers assessed all radiology exams performed at Massachusetts General Hospital (MGH) between 1989 and 2003 to determine the effects of obesity on imaging quality and diagnosis.

The increase of obesity in the United States doubled the number of inconclusive diagnostic imaging exams over a 15-year period, according to a study featured in the August issue of Radiology.

Researchers assessed all radiology exams performed at Massachusetts General Hospital (MGH) between 1989 and 2003 to determine the effects of obesity on imaging quality and diagnosis.

In an effort to quantify how obesity affects diagnostic imaging quality, Dr. Uppot and colleagues analyzed radiology records from a 15-year span at MGH. They searched for incomplete exams that carried the label "limited by body habitus," meaning limited in quality due to patient size.

"While 0.10 percent of inconclusive exams were due to patient size in 1989, by 2003 the number had jumped to 0.19 percent, despite advances in imaging technology," said Raul N. Uppot, M.D., lead author and staff radiologist at MGH. "Americans need to know that obesity can hinder their medical care when they enter a hospital."

An estimated 66 percent of adults in the United States are overweight, obese or morbidly obese, according to the Department of Health and Human Services. Additionally, more than 12.5 million American children and adolescents are overweight. Hospitals are feeling the strain--they now require larger wheelchairs and beds. Additionally, standard operating tables and imaging equipment are not suited for obese patients.

By 2003, the modality that yielded the most difficulties in rendering a diagnosis was abdominal ultrasound (1.90 percent), followed by chest x-rays (0.18 percent), abdominal computed tomography (CT), abdominal x-rays, chest CT and magnetic resonance imaging (MRI) (all anatomic regions included).

CT and MRI can be problematic because of weight limitations of the imaging table and the size of the opening on the imager (patients are inserted through a small "hole in the doughnut"). Standard CT tables can accommodate patients weighing up to 450 pounds, and MRI machines can typically obtain diagnostic-quality images in patients weighing up to 350 pounds.

For exams that require radiation exposure, such as x-rays and CT, the power can be increased on standard machines in an attempt to acquire a higher-quality image. However, this leads to an undesirable increase in radiation dose.

Incomplete examinations related to obesity can lead to serious consequences for the patient, as in the case of misdiagnosis or failure to be able to assign a diagnosis at all.

There can also be economic ramifications. Further testing might be required in the event of an inconclusive exam, as well as increased hospitalization time.

Obesity also increases stress on the imaging systems, due to increased power output and more rapid burnout (as in the case of x-ray tubes).

Dr. Uppot believes that the prevailing lifestyle in the United States and other industrialized nations that facilitates a poor diet and lack of exercise has led to our current obesity crisis.

"In the short term, the medical community must accommodate these patients by investing in technology to help them," Dr. Uppot explained. "In the long term, this country must make cultural shifts that promote more exercise and a healthier diet."

Radiology is a monthly scientific journal devoted to clinical radiology and allied sciences. The journal is edited by Anthony V. Proto, M.D., School of Medicine, Virginia Commonwealth University, Richmond, Va. Radiology is owned and published by the Radiological Society of North America, Inc. (RSNA.org/radiologyjnl)

The Radiological Society of North America (RSNA) is an association of more than 38,000 radiologists, radiation oncologists, medical physicists and related scientists committed to promoting excellence in radiology through education and by fostering research, with the ultimate goal of improving patient care. The Society is based in Oak Brook, Ill. (RSNA.org)

"Effect of Obesity on Image Quality: Fifteen-year Longitudinal Study for Evaluation of Dictated Radiology Reports." Collaborating with Dr. Uppot on this paper were Dushyant V. Sahani, M.D., Peter F. Hahn, M.D., Ph.D., Mannudeep K. Kalra, M.D., Sanjay S. Saini, M.D., M.B.A., and Peter R. Mueller, M.D.


Story Source:

The above story is based on materials provided by Radiological Society of North America. Note: Materials may be edited for content and length.


Cite This Page:

Radiological Society of North America. "Obesity An Increasing Obstacle To Medical Diagnosis." ScienceDaily. ScienceDaily, 25 July 2006. <www.sciencedaily.com/releases/2006/07/060725073823.htm>.
Radiological Society of North America. (2006, July 25). Obesity An Increasing Obstacle To Medical Diagnosis. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2006/07/060725073823.htm
Radiological Society of North America. "Obesity An Increasing Obstacle To Medical Diagnosis." ScienceDaily. www.sciencedaily.com/releases/2006/07/060725073823.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com
How Mt. Everest Helped Scientists Research Diabetes

How Mt. Everest Helped Scientists Research Diabetes

Newsy (Apr. 15, 2014) British researchers were able to use Mount Everest's low altitudes to study insulin resistance. They hope to find ways to treat diabetes. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins