Braided Suture in Mesh

Cesium-131 Braided Suture in Mesh contains seeds with a Braided Suture then sewn into a bioabsorbable mesh that is then stapled or sewn directly into the affected tissues.

The use of bioabsorbable mesh aids in ‘blanket-like’ coverage when compared to individual seed placement and can also provide off-set placement from the radiation source. Common applications include lung, pelvic floor and brain cancers.


Good for surgical procedures


  • Flexible suture and allows for precise placement within tissue
  • Bioabsorbable suitable for a range of body sites
  • Customizable lengths available
Cesium-131 seeds in braided suture in bioabsorbable mesh

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  • Empowering patients to make their own treatment decisions based on decades of data.

Cesium-131 Treatment Areas

Cesium-131 Products

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Your Isotope Choice Makes a Difference

Not all brachytherapy radioisotopes are the same. Compared to alternative brachytherapy seeds, Cesium-131 offers the highest energy and shortest half-life.


Introduced 2004

17 Day Half Life (18)

20.8 Kev

58 Days for 90% Dose

Detectable in the body for 170 Days


Introduced 2004

9.7 Day Half-Life

The amount of time for the radiation to half. A shorter half life means quicker to PSA baseline. (8, 12, 13)

30.4 Kev

The energy level of the isotope. Higher energy leads to greater coverage of the infected organ.

33 Days for 90% Dose

Faster dose delivery rate.

Detectable in the body
for 97 Days


Introduced 1965

60 Day Half Life (18)

28.5 Kev

204 Days for 90% Dose

Detectable in the body for 600 Days

Armpilla C, Dale R, Coles I, et al. The determination of radiobiologically optimized half-lives for radionuclides used in permanent brachytherapy implants. Int J Rad Onc Biol Phys 2003; 55:378-385.

For my patients, I use Cesium-131 instead of Iodine because most of the effective isotope life is spent in 4-5 wks, compared to the 60-day half-life of Iodine,” he said. “Iodine will still be putting out a pretty good dose of radiation 8 or 9 months later. My patients have a shorter duration of acute uropathic complaints because of that.
Dr. Bradley Prestidge, Radiation Oncologist
Dr. Bradley Prestidge
Radiation Oncologist

Find a Doctor Near You

A diagnosis is just the first step toward treating your cancer. We are here to help you make an informed treatment decision with your doctor so you can begin living your life again.  Use the search (below) to find a Doctor that specializes in Brachytherapy.

Want to know more about the versatility of Cesium-131

Do you have questions? We can help with any issues you may have


  1. Frank SJ, et al. American College of Radiology Appropriateness Criteria: Permanent Source Brachytherapy for Prostate Cancer. Brachytherapy. 2011;10(5):357–362
  2. Cesium-131 Instructions for Use
  1. Cesium-131 brachytherapy seeds are indicated for the treatment of malignant disease (e.g., head and neck, eye, brain, breast, prostate, etc.) and may be used in surface, interstitial, and intracavitary applications for tumors with known radiosensitivity. The seeds may be used as a primary treatment or in conjunction with other treatment modalities, such as external beam radiation therapy, chemotherapy or as treatment for residual disease after excision of primary tumors. Contraindications: As with other brachytherapy sources, treatment of tumors in generally poor condition (e.g., ulcerated) is not recommended with Cesium-131 brachytherapy seeds due to the potential for source migration. Prior to use, please reference the Cesium-131 Instructions for more information on indications, contraindications, warnings, all precautions, and adverse events.

    Caution: Federal law restricts this device to sale by or on the order of a physician.

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