Banca de QUALIFICAÇÃO: SIDEMAR FIDELES CEZARIO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : SIDEMAR FIDELES CEZARIO
DATE: 27/12/2023
TIME: 10:30
LOCAL: https://meet.google.com/vaw-athr-hzg
TITLE:

Applying the OWA Operator within Metaheuristics to the Beam Angle and Intensity Problems in IMRT

KEY WORDS:

Radiotherapy, Optimization, Metaheuristic, OWA

PAGES: 52
BIG AREA: Ciências Exatas e da Terra
AREA: Ciência da Computação
SUBÁREA: Sistemas de Computação
SPECIALTY: Arquitetura de Sistemas de Computação
SUMMARY:

The use of radiotherapy for cancer treatment is essential for combating this disease. The challenge is to achieve the minimum dose prescribed for the tumor while avoiding exposure of healthy organs to radiation levels higher than the permitted limits. One of the main therapeutic approaches in this field is intensity-modulated teletherapy (IMRT). This study aimed to optimize the Beam Angle Optimization Problem and Fluency Map Optimization, using metaheuristics such as genetic and memetic algorithms in combination with mathematical programming models. These models include the Ordered weighted averaging (OWA) operator. Statistical tests were conducted to compare the effectiveness of these algorithms, revealing the superiority of the multi-model memetic algorithm over the genetic algorithm, particularly when analyzing these 10 instances. The analyses show that clinically viable solutions could be found in 70% of cases.

COMMITTEE MEMBERS:
Presidente - 1201268 - ELIZABETH FERREIRA GOUVEA GOLDBARG
Interna - 2859606 - SILVIA MARIA DINIZ MONTEIRO MAIA
Externo à Instituição - MATHEUS DA SILVA MENEZES - UFERSA