The radioactive microsphere technique is a widely used method for determining not only CBF but also flow in other organs. It is an embolic technique that relies on delivery of particles into capillary beds, where they are trapped.

Therapy based on the application of microspheres revolves around vascular occlusion, complemented with local therapy in the form of trans-arterial chemoembolization (TACE) or radioembolization (TARE).

This paper reviews the preparation and application of radioactive microspheres for medical purposes. It first discusses the properties of relevant radioisotopes and then explores the diagnostic uses of gamma-emitter labelled microspheres, such as blood flow...

Liver radioembolization (RE) is commonly used for the treatment of hepatocellular carcinoma and secondary liver malignancies. This treatment is performed by injection of radioactive microspheres in the liver artery after transarterial catheterization.

May 7, 2020 · Radioactive microspheres are mostly aqueous dispersions of nanometre or micrometre size particles that carry preferable β-emitting radionuclides.

4. Radioactive microspheres Radio demobilization therapy microspheres sized 10-30 nm are larger than capillaries and get tapped in the first capillary bed when they come across. They are injected into the arteries that lead to the tumor of interest. So these radioactive microspheres deliver a high radiation

Sep 21, 2023 · 4. Radioactive microspheres In radioembolization therapy larger than capillary microspheres, 10-30 nm-sized microspheres are tapped in the first capillary bed as they pass through and then inserted into the arteries that give rise to an interesting tumor. In each of these scenarios, radioactive

Radioactive microspheres can be selectively targeted to various tumors without undue radiation to the non-tumorous tissues. radioactive microspheres are injected to halt tumor growth via the blood supply thereby enabling surgical removal once the tumor size decreases .

Even in small concentrations, radioactive microspheres are able to deliver high radiation doses to a target area without damaging the normal surrounding tissue.

The radioactive microspheres are similar to non-radioactive microspheres in use and behavior, except the radioactivity. The radioactive microspheres contain matrix substance, but in addition to these matrix substances they have one or more radionuclide(s), such as radioactive cesium, radium and ytterbium that are intimately bound to these ...