68Ga-PSMA PET/CT: effect of external cooling on salivary gland uptake
dc.contributor | Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP | |
dc.contributor.author | JUNQUEIRA, Matheus Zanelatto | |
dc.contributor.author | ROCHA, Nelisa Helena | |
dc.contributor.author | SAPIENZA, Marcelo Tatit | |
dc.date.accessioned | 2021-07-08T14:11:31Z | |
dc.date.available | 2021-07-08T14:11:31Z | |
dc.date.issued | 2021 | |
dc.description.abstract | Abstract Objective: To evaluate the effect that external cooling of the salivary glands (ECSG) has on the uptake of gallium-68-labeled prostate-specific membrane antigen (68Ga-PSMA), as an indirect assessment of the capacity of ECSG to reduce the local dose in lutetium-177-PSMA-617 radioligand therapy. Materials and Methods: Ten patients with prostate cancer were submitted to 68Ga-PSMA positron emission tomography/computed tomography with unilateral ECSG. The ECSG was started at 30 min before the injection of the radiotracer and maintained until the end of image acquisition (1 h after injection). Each salivary gland was assessed by determining the maximum, mean, and peak standardized uptake values (SUVmax, SUVmean, and SUVpeak, respectively). The volume of each gland was determined in a volume of interest delineated by a threshold SUVmax of 10%. Paired Student’s t-tests were used in order to compare the results. Results: In terms of the SUV parameters, there were no statistically significant differences between the cooled and contralateral salivary glands. However, the mean volume was 27% lower in the cooled parotid glands than in the contralateral parotid glands (p = 0.004). Conclusion: The use of ECSG does not appear to reduce 68Ga-PSMA uptake by the salivary glands. In addition, there is yet no evidence that ECSG is effective in preventing salivary gland toxicity. | eng |
dc.description.abstract | Resumo Objetivo: Avaliar o impacto do resfriamento externo de glândulas salivares (REGS) na captação de 68Ga-PSMA como marcador indireto dessa intervenção para redução da dose local na terapia com 177Lu-PSMA. Materiais e Métodos: Dez pacientes com câncer de próstata foram submetidos a PET/CT com 68Ga-PSMA com REGS unilateral. O resfriamento se iniciou 30 minutos antes da injeção do radiofármaco até o fim da aquisição de imagem, 1 hora após a injeção. Cada glândula foi avaliada para os valores de captação padronizados máximo, médio e pico (SUVmáx, SUVmédio e SUVpico, respectivamente). O volume foi definido por um isocontorno usando 10% do SUVmáx. Os resultados foram comparados com o teste t de Student. Resultados: Não houve diferença estatisticamente significante entre os valores de SUV das glândulas resfriadas e seus controles. Houve 27% de redução volumétrica (p = 0,004) nas parótidas resfriadas em comparação ao controle. Conclusão: Não houve redução da captação de 68Ga-PSMA nas glândulas salivares ao REGS. Atualmente não há evidências que suportem essa prática clínica. | por |
dc.description.index | PubMed | eng |
dc.identifier.citation | RADIOLOGIA BRASILEIRA, v.54, n.3, p.171-176, 2021 | |
dc.identifier.doi | 10.1590/0100-3984.2020.0044 | |
dc.identifier.issn | 1678-7099 | |
dc.identifier.uri | https://observatorio.fm.usp.br/handle/OPI/41181 | |
dc.language.iso | eng | por |
dc.publisher | Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem | eng |
dc.relation.ispartof | Radiologia Brasileira | |
dc.rights | openAccess | eng |
dc.rights.holder | Copyright Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem | eng |
dc.subject | Salivary glands | eng |
dc.subject | Hypothermia, induced | eng |
dc.subject | Positron emission tomography computed tomography | eng |
dc.subject | 68Ga-PSMA | eng |
dc.subject | 177Lu-PSMA-617 | eng |
dc.subject | Prostatic neoplasms, castration-resistant | eng |
dc.subject | Glândulas salivares | eng |
dc.subject | Hipotermia induzida | eng |
dc.subject | Tomografia computadorizada com tomografia por emissão de pósitrons | eng |
dc.subject | Neoplasias da próstata resistentes à castração | eng |
dc.subject.wos | Radiology, Nuclear Medicine & Medical Imaging | eng |
dc.title | 68Ga-PSMA PET/CT: effect of external cooling on salivary gland uptake | eng |
dc.title.alternative | PET/CT com 68Ga-PSMA: efeitos do resfriamento externo na captação pelas glândulas salivares | eng |
dc.type | article | eng |
dc.type.category | original article | eng |
dc.type.version | publishedVersion | eng |
dspace.entity.type | Publication | |
hcfmusp.citation.scopus | 2 | |
hcfmusp.contributor.author-fmusphc | MATHEUS ZANELATTO JUNQUEIRA | |
hcfmusp.contributor.author-fmusphc | NELISA HELENA ROCHA | |
hcfmusp.contributor.author-fmusphc | MARCELO TATIT SAPIENZA | |
hcfmusp.description.beginpage | 171 | |
hcfmusp.description.endpage | 176 | |
hcfmusp.description.issue | 3 | |
hcfmusp.description.volume | 54 | |
hcfmusp.origem | sciELO | |
hcfmusp.origem.pubmed | 34108764 | |
hcfmusp.origem.scielo | SCIELO:S0100-39842021000300171 | |
hcfmusp.origem.scopus | 2-s2.0-85111403310 | |
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hcfmusp.scopus.lastupdate | 2024-04-12 | |
relation.isAuthorOfPublication | 11e5dfe9-8c92-45f4-860d-1db715606edc | |
relation.isAuthorOfPublication | 61888241-0dcb-4157-affc-64b5c02e58aa | |
relation.isAuthorOfPublication | 1b6d30d8-f675-4713-af58-f7b2b1479ddd | |
relation.isAuthorOfPublication.latestForDiscovery | 11e5dfe9-8c92-45f4-860d-1db715606edc |
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