Comparative dosimetry between iridium wires and seed ribbons

• Published in: International journal of radiation oncology, biology, physics Vol. 11; no. 9; pp. 1733 - 1739
• Main Authors: Marinello, G., Valero, M., Leung, S., Pierquin, B.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.09.1985; Elsevier
• Subjects: Biological and medical sciences; Brachytherapy - methods; Curietherapy; Humans; Iridium - therapeutic use; Iridium 192; Medical sciences; Neoplasms - radiotherapy; Paris System; Radiation therapy and radiosensitizing agent; Radioisotopes - therapeutic use; Radiotherapy Dosage; Seed ribbons; Treatment with physical agents; Treatment. General aspects; Tumors; Iridium 192; Seed ribbons; Paris System; Curietherapy; Human; Interstitial radiotherapy; Radiation dose; Tumor; Calculation; Dosimetry; Radiotherapy; Computer aid; Comparative study; Thread; Beadlet
• ISSN: 0360-3016; 1879-355X
• DOI: 10.1016/0360-3016(85)90229-9

We have undertaken a computer study that explores the conditions under which seed ribbons may replace iridium 192 wires in the Paris System. Compared with continuous iridium 192 wires, seed ribbons demonstrate greater inhomogeneity and loss of flexibility, simplicity, and other advantages. Nonetheless, we have defined the conditions where seed ribbons may be used in the Paris System to give satisfactory dose distributions and acceptable levels of heterogeneity within any given implant volume. These conditions include seed length, spacing between seeds, number of seeds per ribbon, and geometric arrangement of ribbons.