News | Magnetic Resonance Imaging (MRI) | August 22, 2016

Researchers say non-invasive technique avoids biopsies, makes research and treatment easier

NASH, nonalcoholic steatohepatitis, MRI, MRI-PDFF, University of California San Diego study

August 22, 2016 — Researchers at the University of California San Diego School of Medicine have found that a form of magnetic resonance imaging (MRI) corresponds with histological responses in patients with nonalcoholic steatohepatitis (NASH). The MRI technique in question non-invasively measures fat density in the liver.

The finding, published in the journal Therapeutic Advances in Gastroenterology, suggests the imaging technique can be useful in future NASH clinical trials and in treatment.

NASH is an advanced form of nonalcoholic fatty liver disease (NAFLD), which occurs when fat accumulates in liver cells due to causes other than excessive alcohol use. The precise cause is not known, but diet and genetics play substantial roles. The condition is relatively common. NAFLD occurs in roughly 20 percent of non-obese persons and in more than 60 percent of obese persons.

NAFLD often has no symptoms, but can progress to NASH and, ultimately, to cirrhosis or liver cancer.

“NAFLD and NASH are invisible diseases. In most cases, adverse effects are not noticeable until the disease is well-advanced,” said senior author Rohit Loomba, M.D., professor of medicine at UC San Diego School of Medicine and director of the Nonalcoholic Fatty Liver Disease Research Center at UC San Diego Health. “The ability to accurately quantify liver fat content, without resorting to needle biopsies, represents a significant advance, in the lab and in the clinic.”

Loomba and colleagues in the NAFLD Translational Research Unit and Liver Imaging Group looked at how a form of MRI, called magnetic resonance imaging-estimated proton-density-fat-fraction (MRI-PDFF), compared to liver biopsies in 35 patients with confirmed NASH diagnoses. Some patients received treatment for their condition, some received a placebo. All were assessed with both techniques before and after the treatment period.

The researchers found that a 29 percent reduction in liver fat, as measured by MRI-PDFF, translated to a clinically important improvement in liver histology. “MRI-PDFF has the potential to be a cost-effective and convenient method for liver fat quantification. It requires only a single, 20-second breath hold and an estimated time of about five minutes in an MRI scanner,” said Loomba.

Study authors noted that further external validation by independent research groups is needed.

Co-authors include: Janki Patel, Rikki Bettencourt, Jeffrey Cui, Joanie Salotti, Jonathan Hooker, Archana Bhatt, Carolyn Hernandez, Phirum Nguyen, Hamed Aryafar, Mark Valasek, William Haufe, Catherine Hooker, Lisa Richards, and Claude B. Sirlin, all at UC San Diego.

Funding for this research came, in part, from Atlantic Philanthropies, Inc., the John A. Hartford Foundation, OH, the Association of Specialty Professors, the American Gastroenterological Association and the National Institutes of Health (grant K23-DK090303).

For more information: www.tag.sagepub.com

Related Content

News | MRI Breast

June 22, 2022 — According to ARRS’ American Journal of Roentgenology (AJR), contrast-enhanced mammography (CEM) may be a ...

Time June 22, 2022
arrow
News | Artificial Intelligence

June 9, 2022 — Infinitt North America and Brainreader A/S announced today a wide ranging and unique partnership to ...

Time June 09, 2022
arrow
News | Ultrasound Imaging

June 7, 2022 — According to ARRS’ American Journal of Roentgenology (AJR), ultrasound-derived fat fraction (UDFF) is ...

Time June 07, 2022
arrow
News | Radiation Therapy

June 3, 2022 — Henry Ford Health is the first in the world to complete a full course of patient treatments using the ...

Time June 03, 2022
arrow
Feature | Radiology Business | By Melinda Taschetta-Millane

Here is what you and your colleagues found to be most interesting in the field of medical imaging during the month of ...

Time June 01, 2022
arrow
News | Magnetic Resonance Imaging (MRI)

June 1, 2022 — SyntheticMR, an innovative software solutions company for magnetic resonance imaging announced hat their ...

Time June 01, 2022
arrow
News | Magnetic Resonance Imaging (MRI)

May 25, 2022 — According to ARRS’ American Journal of Roentgenology (AJR), adding diffusion-weighted MRI (DWI) to ...

Time May 25, 2022
arrow
News | Contrast Media

May 13, 2022 — The ACR Committee on Drugs and Contrast Media, within the ACR Commission on Quality and Safety, is aware ...

Time May 13, 2022
arrow
News | Magnetic Resonance Imaging (MRI)

May 13, 2022 — Alzheimer’s disease is the most common form of dementia, one of the major causes of dependency and ...

Time May 13, 2022
arrow
News | Magnetic Resonance Imaging (MRI)

May 10, 2022 — At the ISMRM 2022 conference, Bruker announced the launch of innovative 7 Tesla and 9.4 Tesla conduction ...

Time May 10, 2022
arrow
Subscribe Now