000165189 001__ 165189
000165189 005__ 20251219174251.0
000165189 0247_ $$2doi$$a10.4103/jmp.jmp_156_23
000165189 0248_ $$2sideral$$a146974
000165189 037__ $$aART-2024-146974
000165189 041__ $$aeng
000165189 100__ $$aJiménez-Puertas, Sara
000165189 245__ $$aEvaluation of the minimum segment width and fluence smoothing tools for intensity-modulated techniques in Monaco treatment planning system
000165189 260__ $$c2024
000165189 5060_ $$aAccess copy available to the general public$$fUnrestricted
000165189 5203_ $$aPurpose:
This study aims to minimize monitor units (MUs) of intensity-modulated treatments in the Monaco treatment planning system while preserving plan quality by optimizing the “Minimum Segment Width” (MSW) and “Fluence Smoothing” parameters.
Materials and Methods:
We retrospectively analyzed 30 prostate, 30 gynecological, 15 breast cancer, 10 head and neck tumor, 11 radiosurgery, and 10 hypo-fractionated plans. Original prostate plans employed “Fluence Smoothing” = Off and were reoptimized with Low, Medium, and High settings. The remaining pathologies initially used MSW = 0.5 cm and were reoptimized with MSW = 1.0 cm. Plan quality, including total MU, delivery time, and dosimetric constraints, was statistically analyzed with a paired t-test.
Results:
Prostate plans exhibited the highest MU variation when changing “Fluence Smoothing” from Off to High (average ΔMU = −5.1%; P < 0.001). However, a High setting may increase overall MU when MSW = 0.5 cm. Gynecological plans changed substantially when MSW increased from 0.5 cm to 1.0 cm (average ΔMU = −29%; P < 0.001). Organs at risk sparing and planning target volumes remained within 1.2% differences. Replanning other pathologies with MSW = 1.0 cm affected breast and head and neck tumor plans (average ΔMU = −168.38, average Δt = −11.74 s, and average ΔMU = −256.56, average Δt = −15.05 s, respectively; all with P < 0.004). Radiosurgery and hypofractioned highly modulated plans did not yield statistically significant results.
Conclusions:
In breast, pelvis, head and neck, and prostate plans, starting with MSW = 1.0 cm optimally reduces MU and treatment time without compromising plan quality. MSW has a greater impact on MU than the “Fluence Smoothing” parameter. Plans with high modulation might present divergent behavior, requiring a case-specific analysis with MSW values higher than 0.5 cm.
000165189 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000165189 592__ $$a0.256$$b2024
000165189 593__ $$aRadiology, Nuclear Medicine and Imaging$$c2024$$dQ3
000165189 593__ $$aBiophysics$$c2024$$dQ4
000165189 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000165189 700__ $$aGonzález Rodríguez, Andrea
000165189 700__ $$0(orcid)0000-0002-1530-5662$$aLozares Cordero, Sergio$$uUniversidad de Zaragoza
000165189 700__ $$aGonzález González, Tomás
000165189 700__ $$aDíez Chamarro, Javier
000165189 700__ $$aHernández Hernández, Mónica
000165189 700__ $$aCastro Moreno, Raquel
000165189 700__ $$aSánchez Casi, Marta
000165189 700__ $$aVilla Gazulla, David Carlos
000165189 700__ $$aGandía Martínez, Almudena
000165189 700__ $$aCampos Bonel, Arantxa
000165189 700__ $$aPuertas Valiño, Maria del Mar
000165189 700__ $$0(orcid)0000-0003-4732-7409$$aFont Gómez, José Antonio$$uUniversidad de Zaragoza
000165189 7102_ $$11011$$2770$$aUniversidad de Zaragoza$$bDpto. Microb.Ped.Radio.Sal.Pú.$$cÁrea Radiol. y Medicina Física
000165189 773__ $$g49, 2 (2024), 250-260$$tJournal of Medical Physics$$x0971-6203
000165189 8564_ $$s2363777$$uhttps://zaguan.unizar.es/record/165189/files/texto_completo.pdf$$yVersión publicada
000165189 8564_ $$s3081924$$uhttps://zaguan.unizar.es/record/165189/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000165189 909CO $$ooai:zaguan.unizar.es:165189$$particulos$$pdriver
000165189 951__ $$a2025-12-19-14:42:42
000165189 980__ $$aARTICLE