QuiremScout®
Imageable microspheres for SIRT work-up
a personalized approach to sirt
Visualizing SIRT success from the start
QuiremScout® is used to safely evaluate the distribution of intra-arterially injected microspheres prior to performing SIRT. The insights gained with QuiremScout® can be used by the treating physician to make an informed decision about the expected safety and efficacy of the SIRT procedure. Studies show that lung-shunt and intrahepatic distribution can be more accurately assessed with QuiremScout® compared to the commonly used surrogate Tech-99m-MAA.
1. QuiremScout® is better at predicting lung shunting than the commonly used surrogate Tech-99m-MAA.1
2. QuiremScout® is better at predicting the intrahepatic distribution than the commonly used surrogate Tech-99m-MAA.2
3. QuiremScout® is proven clinically safe in a population of 82 patients.3
4. QuiremScout® enables dual isotope technology.
5. QuiremScout® uses the same particles and method of administration as QuiremSpheres®, optimally simulating the QuiremSpheres® SIRT procedure.
– “In clinical practice, lung absorbed doses are significantly overestimated by pretreatment diagnostic 99mTcMAA imaging. Pretreatment diagnostic 166Ho-microsphere SPECT/CT imaging accurately predicts lung absorbed doses after 166Ho radioembolization.” Elschot et al. Eur J Nucl Med Mol Imaging (2014) 41:1965-1975
– “A holmium-166 scout dose is safe in a clinical setting.; Holmium-166 scout dose is a safe alternative for 99mTc-MAA for radioembolisation work-up.; Holmium-166 scout dose potentially has several benefits over 99mTc-MAA for radioembolisation work-up.” Braat et al. Eur Rad (2017) 28, 3: 920–928
– “Holmium-166 scout dose seemed superior to 99mTc-MAA in predicting the intrahepatic distribution.” Dassen et al. Abstract 1507.4 CIRSE 2018
| Isotope | QuiremScout® | Tech-99m-MAA |
|---|---|---|
| Particle shape |  |  |
| Gamma-radiation | 81 keV | 141 keV |
| Imaging | SPECT(/CT) | SPECT(/CT) |
| Material | poly(L-lactic acid) | MAA |
| Diameter | 30 (15-60) μm | 1-150 μm |
Quiremscout® in a 73-yo female HCC-patient
QuiremScout® - Case example
Indication for Use
QuiremScout® is indicated for patients that are eligible for SIRT treatment of liver tumors.
Intended Use
QuiremScout® is intended for evaluation of lung-shunt, extrahepatic deposition and intrahepatic distribution of intra-arterially injected microspheres.
Contraindications
QuiremScout® is contraindicated for patients that
- are not eligible for SIRT;
- have uncorrectable abnormal vascular anatomy that would result in significant reflux of hepatic arterial blood to the lungs, stomach, pancreas or bowel;
Instructions for Use
You can download the QuiremScout® Instructions for Use on the Product Documentation page.
using microspheres as scout
Personalized SIRT, it starts with QuiremScout®
The effectiveness and safety of SIRT depends on numerous patient related factors, such as anatomy, tumor blood supply, tumor type and tumor staging. It is therefore essential that the expected SIRT treatment outcome is evaluated for each patient individually. QuiremScout® is used to simulate the SIRT treatment, using a safe dose of microspheres identical to those used for the therapy. The QuiremScout® scan can be used by the clinical team to make an informed and patient-specific clinical decision whether SIRT is likely to be beneficial.