News | October 31, 2011

New Data Demonstrates Positron Emission Mammography Has Higher Sensitivity Than PET/CT

October 31, 2011 – The Breast journal published new data from a prospective study conducted at the Seoul National University College of Medicine in Korea that shows positron emission mammography (PEM) has a higher sensitivity for tumor detection compared with whole-body positron emission tomography (PET)/ computed tomography (CT) when using both visual as well as quantitative analysis. These results were particularly striking and significant for smaller-sized tumors (less than 2 cm), likely due to the improved spatial resolution offered by PEM. This demonstrates PEM's clinical utility in being able to more effectively diagnosis early stage cancer.

According to recent journal articles, the sensitivity of PET/CT is limited, especially for low-grade and small tumors. Most PET/CT scanners currently provide a spatial resolution at 5 mm or greater, thus limiting PET/CT's ability to depict small-sized tumors such as invasive lobular carcinoma or ductal carcinoma in situ. This study provides a direct comparison within the same patient population.

A total of 113 breast lesions from 101 patients with a mean tumor size of 2.2 cm, were included in the analysis. The patients underwent PEM with FDG and whole-body PET/CT before surgical resection. The images were then analyzed visually and quantitatively using the tumor-to-normal tissue uptake ratio (TNR) with a cutoff of 2.5 or greater. The tumors were classified into 4 groups based on size using pathology measurements prior to detection sensitivity analysis for PEM and PET/CT. In visual analysis, the overall sensitivity of PEM was 95 percent, which was significantly higher than the 87 percent sensitivity found for PET/CT; ( p=0.004). In addition, the TNR of PEM was significantly higher than that of PET/CT in small tumors (<1 cm; p=0.005 and <2 cm; p<0.001).

PEM is the breast application of the Naviscan high-resolution PET scanner, which both can localize as well as characterize the metabolic activity of a lesion. PEM uses parallel photon detectors in a configuration similar to mammography with breast immobilization, not compression. It is the only U.S. Food and Drug Administration (FDA)-cleared, CE Certified 3-D molecular breast imaging (MBI) device on the market. The metabolic view assists physicians in making optimal care decisions by providing an ability to distinguish between benign and malignant lesions.

For more information: www.naviscan.com

 

Related Content

Transpara Deep Learning Software Matches Experienced Radiologists in Mammogram Reading
News | Computer-Aided Detection Software | January 12, 2018
Deep learning and artificial intelligence improves the efficiency and accuracy of reading mammograms, according to...
Smartphone Addiction Creates Imbalance in Brain
News | Mobile Devices | January 11, 2018
Researchers have found an imbalance in the brain chemistry of young people addicted to smartphones and the internet,...
Fat Distribution in Women and Men Provides Clues to Heart Attack Risk
News | Women's Health | January 11, 2018
January 11, 2018 – It’s not the amount of fat in your body but where it is stored that may increase your risk for hea
Minimally Invasive Treatment Provides Relief from Back Pain

Lumbar spine MRI showing disc herniation and nerve root at baseline and one month after treatment

News | Interventional Radiology | January 11, 2018
The majority of patients were pain free after receiving a new image-guided pulsed radiofrequency treatment for low back...
Emergency Radiologists See Inner Toll of Opioid Use Disorders

Rates of Imaging Positivity for IV-SUDs Complications. Image courtesy of Efren J. Flores, M.D.

News | Clinical Study | January 11, 2018
January 11, 2018 – Emergency radiologists are seeing a high prevalence of patients with complications related to opio
CT Shows Enlarged Aortas in Former Pro Football Players

3-D rendering from a cardiac CT dataset demonstrating mild dilation of the ascending aorta.

News | Computed Tomography (CT) | January 11, 2018
Former National Football League (NFL) players are more likely to have enlarged aortas, a condition that may put them at...
Study Finds No Evidence that Gadolinium Causes Neurologic Harm

MR images through, A, C, E, basal ganglia and, B, D, F, posterior fossa at level of dentate nucleus. Images are shown for, A, B, control group patient 4, and the, C, D, first and, E, F, last examinations performed in contrast group patient 13. Regions of interest used in quantification of signal intensity are shown as dashed lines for globus pallidus (green), thalamus (blue), dentate nucleus (yellow), and pons (red).

News | Contrast Media | January 11, 2018
January 11, 2018 — There is no evidence that accumulation in the brain of the element gadolinium speeds cognitive dec

Size comparison between 3-D printed prosthesis implant and a penny.

News | 3-D Printing | January 11, 2018
January 11, 2018 — Researchers using...
RSNA 2017 technical exhibits, expo floor, showing new radiology technology advances.
Feature | RSNA 2017 | January 11, 2018
January 11, 2018 — Here is a list of some of the key clinical study presentations, articles on trends and videos from
Hip Steroid Injections Associated with Bone Changes

58-year-old woman with left hip pain. X-ray from one month prior to the steroid/anesthetic injection demonstrates moderate joint space narrowing (arrows) and bony proliferation (arrowheads).

News | Orthopedic Imaging | January 11, 2018
January 11, 2018 – Osteoarthritis patients who received a steroid injection in the hip had a significantly greater in
Overlay Init