What does exceptional energy resolution look like?
12/08/2026
The Spec-RAM CZT clearly resolves closely spaced gamma peaks, providing the necessary resolution required for radionuclidic identity and purity
Clear separation of closely spaced energy peaks is critical for accurate radionuclidic identity and purity. The spectra shown below demonstrate the performance of the Spec-RAM CZT gamma spectrometer across a selection of commonly used medical radioisotopes as well as novel isotopes being used to develop new therapeutics. Each spectrum highlights the instrument's outstanding energy resolution, producing sharp defined peaks for clear analysis and interpretation.
A better alternative to traditional NaI
NaI is commonly used for nuclide ID analyses in radiopharmacies worldwide. Through use of semiconductor technology, the Spec-RAM CZT provides truly exceptional energy resolution in comparison and ultra-low background.
What allows the Spec-RAM CZT to achieve such resolution is its Cadmium Zinc Telluride detector, which offers excellent sensitivity to gamma emissions. For example, the detector delivers an energy resolution (FWHM) of <2.5% at the 662 keV gamma peak of 137Cs.
Novel alpha emitters
In the example below, the Spec-RAM CZT is able to differentiate the daughters 221Fr and 213Bi from the parent 225Ac.
Emerging theranostics
The Spec-RAM LC uses the same detector as the Spec-RAM CZT, allowing it to determine the composition of radio-HPLC eluents and replace traditional fraction collection for 212Pb. Using new, innovative software updates in Laura Radiopharma, it easily resolves the complex decay scheme to provide the necessary precision for targeted therapies.
Common medical isotopes
The following spectra demonstrate the Spec-RAM CZT's capabilities across a range of isotopes used in nuclear medicine and radiopharmacy for different applications including therapies, imaging and calibrations.
Find out more
You can learn more about the Spec-RAM CZT by clicking the button below to speak to a product specialist directly.