HDR Brachytherapy Planning Using Active Needles - Preliminary Investigation on Dose Planning

Overview

Journal Proc IEEE RAS EMBS Int Conf Biomed Robot Biomechatron

Publisher IEEE

Date 2023 Jan 12

PMID 36632440

Authors

Mahsa Rabiei

Seong Young Ko

Tarun K Podder

John Lederer

Bardia Konh

Affiliations

Soon will be listed here.

Abstract

In this study we present a new approach to plan a high-dose-rate (HDR) prostate brachytherapy (BT) using active needles recently developed by our group. The active needles realize bi-directional bending inside the tissue, and thereby more compliant with the patient's anatomy compared with conventional straight needles. A computational method is presented to first generate a needle arrangement configuration based on the patient's prostate anatomy. The needle arrangement is generated to cover the prostate volume, providing accessible channels for the radiation source during a HDR BT. The needle arrangement configuration avoids healthy organs and prevents needle collision inside the body. Then a treatment plan is proposed to ensure sufficient prescribed dosage to the whole prostate gland. The method is applied to a prostate model reconstructed from an anonymized patient to show the feasibility of this method. Finally, the active needle's capability to generate the required bending is shown. We have shown that our method is able to automatically generate needle arrangement configuration using active needles, and plan for a treatment that meets the dose objectives while using fewer needles (about 20% of conventional straight needles) than the conventional HDR BT performed by straight needles.

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