LumaGem Molecular Breast Imaging

The LumaGEM™ MBI System is the first commercially available, FDA cleared, planar, dual head, fully solid state digital imaging system utilizing cadmium zinc telluride (CZT) technology used for breast imaging. LumaGEM benefits from proprietary Gamma Medica-Industrial Imaging Division Application Specific Integrated Circuits (ASICs) to achieve the next-generation of imaging performance.1,2

Molecular Breast Imaging (MBI) is a new technology used for breast imaging. MBI identifies tumors in dense breast tissue that are often not visible with X-ray based analog or digital mammography.

While conventional analog gamma cameras are limited to poor intrinsic spatial resolution of 3-4 mm, LumaGEM delivers scans with a groundbreaking 1.6 mm intrinsic resolution, and while other breast specific gamma cameras (BSGI) deliver only 10% FWHM energy resolution (typically as bad as 15% FWHM) LumaGEM delivers 4.5% FWHM energy resolution, the best in the industry.

LumaGEM is available in single or dual head configuration, matching your clinical needs to your facility’s budget.

LumaGEM features a gantry that is very versatile in positioning the patient, with a full range of motion. Gamma Medica’s unique patented mounting mechanism, allowing the use of light breast compression, ensures that the radiologist can obtain images using any standard mammography view. LumaGEM can thus be used by any trained mammographer.

How is a LumaGEM™ MBI Exam Performed?

A MBI scan with LumaGEM is quick and easy. With LumaGEM's dual head configuration, LumaGEM can speed up the exam time as compared to its single head competitors. A small amount of short half lived radioactive tracer (Tc-99m Sestamibi) is injected into the patient, and within just 10 minutes after injection the scan can begin.

During the exam, each breast is lightly compressed between two gamma cameras, with just enough pressure to keep it stationary for 5–10 min while several pictures are taken. MBI provides a better comfort level as only 10 lbs of pressure is used, compared to the 45 lbs of compression needed to take a mammogram.

The breast is imaged in the mammography standard CC (cranial caudal) as well as the MLO (mediolateral oblique) positions. This allows for easy comparison of the original mammography views with the LumaGEM views.

Because each scan takes only minutes, the entire procedure can be completed in approximately 45 minutes and the images are immediately available for the physician’s interpretation. Most patients find the exam to be quite comfortable because unlike mammography, LumaGEM requires only light, pain-free compression. The end result is unparalleled image quality, and the knowledge that the scan was completed on the most advanced molecular imaging equipment available today.

  1. Wagenaar DJ; Chowdhury S; Parnham K; Maehlum G; Patt BE. Advantages of semiconductor CZT for medical imaging. Proc SPIE 2007; 6707-17
  2. Mikkelsen S; Meier D; Maehlum G; Sundal B; Talebi J; Helland A; Ostgaard N; Skogseide Y; Ullaland K. "Low-power and low-noise multi-channel ASIC for x-ray and gamma-ray spectroscopy ", Proceedings of the Second International Workshop on Analog and Mixed Signal Integrated Circuits for Space Applications (AMICSA 2008), 31 August - 2 September 2008, Cascais/Sintra, Portugal.

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