2021
Preoperative Chemoradiotherapy for Gastroesophageal Junction Adenocarcinoma Modified by PET/CT: Results of Virtual Planning Study
SLÁVIK, Marek, Petr BURKOŇ, Iveta SELINGEROVÁ, Pavel KRUPA, Tomáš KAZDA et. al.Základní údaje
Originální název
Preoperative Chemoradiotherapy for Gastroesophageal Junction Adenocarcinoma Modified by PET/CT: Results of Virtual Planning Study
Autoři
SLÁVIK, Marek (703 Slovensko, domácí), Petr BURKOŇ (203 Česká republika, garant, domácí), Iveta SELINGEROVÁ (203 Česká republika, domácí), Pavel KRUPA (203 Česká republika, domácí), Tomáš KAZDA (203 Česká republika, domácí), Jaroslava STANKOVA (203 Česká republika), Tomas NIKL (203 Česká republika), Renata HEJNOVÁ (203 Česká republika, domácí), Zdeněk ŘEHÁK (203 Česká republika), Pavel OŠMERA (203 Česká republika), Tomáš PROCHÁZKA (203 Česká republika, domácí), Eva DVORAKOVA (203 Česká republika), Petr POSPÍŠIL (203 Česká republika, domácí), Peter GRELL (703 Slovensko, domácí), Pavel ŠLAMPA (203 Česká republika, domácí) a Radka OBERMANNOVÁ (203 Česká republika, domácí)
Vydání
Medicina-Lithuania, Basel, MDPI, 2021, 1010-660X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30204 Oncology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.948
Kód RIV
RIV/00216224:14110/21:00120228
Organizační jednotka
Lékařská fakulta
UT WoS
000735791500001
Klíčová slova anglicky
gastroesophageal junction cancer; PET; CT; radiotherapy; neoadjuvant chemoradiotherapy
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 16. 5. 2022 09:12, Mgr. Tereza Miškechová
Anotace
V originále
Background and Objectives: The treatment of gastroesophageal junction (GEJ) adenocarcinoma consists of either perioperative chemotherapy or preoperative chemoradiotherapy. Radiotherapy (RT) in the neoadjuvant setting is associated with a higher probability of resections with negative margins (R0) and better tumor regression rate, which might be enhanced by incrementing RT dose with potential impact on treatment results. This virtual planning study demonstrates the feasibility of increasing the dose to GEJ tumor and involved nodes using PET/CT imaging. Materials and Methods: 16 patients from the chemoradiotherapy arm of the phase II GastroPET study were treated by a prescribed dose of 45.0 Gray (Gy) in 25 fractions. PET/CT was performed before treatment. The prescribed dose was virtually boosted on PET/CT-positive areas to 54.0 Gy by 9 Gy in 5 fractions. Dose-volume histograms (DVH) were compared, and normal tissue complication (NTCP) modeling was performed for both dose schedules. Results: DVHs were exceeded in mean heart dose in one case for 45.0 Gy and two cases for 54.0 Gy, peritoneal space volume criterion V-45Gy < 195 ccm in three cases for 54.0 Gy and V-15Gy < 825 ccm in one case for both dose schedules. The left lung volume of 25 Gy isodose exceeded 10% in most cases for both schedules. The NTCP values for the heart, spine, liver, kidneys and intestines were zero for both schemes. An increase in NTCP value was for lungs (median 3.15% vs. 4.05% for 25 x 1.8 Gy and 25 + 5 x 1.8 Gy, respectively, p = 0.013) and peritoneal space (median values for 25 x 1.8 Gy and 25 + 5 x 1.8 Gy were 3.3% and 14.25%, respectively, p < 0.001). Conclusion: Boosting PET/CT-positive areas in RT of GEJ tumors is feasible, but prospective trials are needed.
Návaznosti
LM2018128, projekt VaV |
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NV17-29389A, projekt VaV |
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90125, velká výzkumná infrastruktura |
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