Base de dados : LILACS
Pesquisa : E02.815.768 [Categoria DeCS]
Referências encontradas : 8 [refinar]
Mostrando: 1 .. 8   no formato [Detalhado]

página 1 de 1

  1 / 8 LILACS  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-1151572
Autor: Elzaurdín Mora, Rubén Alexander; Nápoles Morales, Misleydis.
Título: Uso de PET-CT en el delineado de volumen en la planificación del tratamiento con radiación / Use of PET-CT in the one delineated of volume in the planning of the one radiant treatment
Fonte: Int. j. med. surg. sci. (Print);8(1):1-9, mar. 2021. ilus, tab.
Idioma: es.
Resumo: El tratamiento con radioterapia, consiste en irradiar de forma homogénea el tumor, evitando irradiar los órganos cercanos. El desarrollo de la tecnología en el campo de la medicina, ha permitido que se cumpla este principio, con buenos resultados de respuesta objetiva, que se traduce en el control de la enfermedad de los pacientes con cáncer. La Tomografía axial computarizada por emisión de positrones (PET-CT) consigue una mayor precisión en el delineado del volumen blanco o tumoral. El propósito de este estudio fue analizar la influencia del uso del PET-CT en el delineado de volúmenes a tratar en la planificación del tratamiento con radiaciones.Se diseñó un estudio piloto con dos pacientes preparados para radioterapia por neoplasias malignas, a los cuáles se les realizó un TAC simple y un PET-CT y observadores independientes realizaron la delimitación del tumor. Se examinó la consistencia entre los observadores y las mediciones en las imágenes.El uso del PET-CT favoreció la delimitación del volumen a irradiar lo que disminuye el riesgo para los órganos vecinos.

The treatment with radiotherapy consists on irradiating in a homogeneous way the tumor, avoiding to irradiate the near organs. The development of the technology in the field of the medicine, it has allowed that this principle is completed, with good results of objective answer what allows the control of the illness of the patients with cancer. The computerized axial tomography by positrons emission (PET-CT) it gets a bigger precision in the one delineated of the white volume or tumoral. The purpose of this study was to analyze the influence of the use of the PET-CT in the one delineated of volumes to try in the planning of the treatment with radiations.A study pilot was designed with two prepared patients for radiotherapy for malignant diseases, to those which they were carried out a simple TAC and a PET-CT and independent observers carried out the delimitation of the tumor. The consistency was examined between the observers and the mensuration in the images.The use of the PET-CT favors the delimitation of the volume to irradiate what diminishes the risk for the neighboring organs.
Descritores: Radioterapia/métodos
Radioterapia Guiada por Imagem/métodos
Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos
-Radioterapia (Especialidade)/métodos
Neoplasias/radioterapia
Neoplasias/diagnóstico por imagem
Limites: Humanos
Masculino
Tipo de Publ: Estudo Comparativo
Responsável: CL61.1 - Biblioteca Central Campus Sur


  2 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-892863
Autor: Abuodeh, Yazan A; Naghavi, Arash O; Juan, Tzu-Hua; Ma, Zhenjun; Wilder, Richard B.
Título: Quality of Life after post-prostatectomy intensity modulated radiation therapy to the prostate bed with or without the use of gold fiducial markers for image guidance or higher total radiotherapy doses
Fonte: Int. braz. j. urol;43(4):628-637, July-Aug. 2017. tab, graf.
Idioma: en.
Resumo: ABSTRACT Purpose To evaluate quality of life (QoL) after post-prostatectomy intensity modulated radiation therapy (IMRT) in the "adjuvant" setting starting within 4 months of radical prostatectomy for adverse features; and "salvage" setting for a PSA≥0.2ng/mL. Materials and Methods Retrospective review of 130 patients who underwent IMRT to the prostate bed±gold fiducial marker placement for image guidance to 64.8-72.0Gy (median, 70.2Gy) between 2004 and 2013. Higher doses were defined as 70.2-72.0Gy and lower doses were defined as 64.8-68.4Gy. Androgen deprivation therapy (ADT) was given to 4/48 (8%) adjuvant patients and 9/82 (11%) salvage patients. International Prostate Symptom Score (IPSS), Sexual Health Inventory for Men (SHIM), and Expanded Prostate Cancer Index Composite-26-bowel (EPIC-26-bowel) questionnaires were used to assess urinary, sexual, and bowel QoL, respectively. Results Median follow-up was 46 months. There were better urinary (p=0.03) and sexual (p=0.002) QoL scores with adjuvant IMRT relative to salvage IMRT. The use of prostate bed fiducial markers did not significantly affect urinary, sexual, or bowel QoL (p=0.39, p=0.49, and p=0.40, respectively). Higher total radiotherapy doses did not significantly affect urinary, sexual, or bowel QoL (p=0.21, p=0.61, and p=0.36, respectively). Conclusions There was no significant change in urinary, sexual, and bowel sexual QoL with post-prostatectomy IMRT regardless of whether prostate bed fiducial markers or higher total radiotherapy doses were used. QoL with IMRT in the present study compares favorably with prior reports for three-dimensional conformal radiation therapy.
Descritores: Prostatectomia/psicologia
Neoplasias da Próstata/cirurgia
Neoplasias da Próstata/radioterapia
Qualidade de Vida/psicologia
-Neoplasias da Próstata/psicologia
Estudos Retrospectivos
Seguimentos
Resultado do Tratamento
Terapia de Salvação
Terapia Combinada
Radioterapia de Intensidade Modulada
Marcadores Fiduciais
Radioterapia Guiada por Imagem
Limites: Humanos
Masculino
Responsável: BR1.1 - BIREME


  3 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Chile
Texto completo
Id: biblio-1020731
Autor: San Martín M, Evelyn; Salgado F, Apolo; Véliz R, Ignacio; Villegas P, Cynthia; Vásquez F, Beatriz; Parra C, Vincka; Aros B, Jessica.
Título: Image-Guided BrachyAblation (IGBA) en hepatocarcinoma: descripción de la técnica y reporte del primer caso en Chile / Image-guided brachyablation for hepatocarcinoma: report of one case
Fonte: Rev. méd. Chile;147(6):808-812, jun. 2019. graf.
Idioma: es.
Resumo: Eighty percent of hepatocarcinomas are inoperable at the moment of diagnosis. Liver transplantation is the treatment of choice in these cases, but local therapies are another alternative. Among these, Image-Guided BrachyAblation is a safe choice. We report a 76-year-old male with a hepatocarcinoma, who was considered inoperable due to the high surgical risk of the patient. A local treatment with Image-Guided BrachyAblation was decided. A brachytherapy needle was placed in the tumor under computed tomography guidance and a 15 Gy single dose was delivered from an Iridium-192 source. The patient had no immediate complications and at one month of follow up he continued without incidents.
Descritores: Braquiterapia/métodos
Carcinoma Hepatocelular/radioterapia
Técnicas de Ablação/métodos
Radioterapia Guiada por Imagem/métodos
Neoplasias Hepáticas/radioterapia
-Doses de Radiação
Radioisótopos de Irídio
Tomografia Computadorizada por Raios X
Resultado do Tratamento
Carcinoma Hepatocelular/diagnóstico por imagem
Neoplasias Hepáticas/diagnóstico por imagem
Limites: Humanos
Masculino
Idoso
Tipo de Publ: Relatos de Casos
Responsável: CL1.1 - Biblioteca Central


  4 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-900698
Autor: Ricardo R, Andrés Mauricio; Arango M, Lázaro Antonio.
Título: Validez diagnóstica de la endosonografía biliopancreática en el diagnóstico de colangitis aguda secundaria a obstrucción biliar / Diagnostic Validity of Biliopancreatic Endosonography in the Diagnosis of Acute Cholangitis Secondary to Biliary Obstruction
Fonte: Rev. colomb. gastroenterol;32(3):216-222, 2017. tab.
Idioma: es.
Resumo: Resumen El diagnóstico de las colangiopatías obstructivas por endosonografía biliopancreática (EUS, por sus siglas en inglés) se ha estudiado en profundidad, y existe un extenso reconocimiento de su papel para el diagnóstico de coledocolitiasis, tumores de la encrucijada biliopancreática y síndromes de compresión extrínseca de la vía biliar. La colangitis, la complicación más frecuente de la obstrucción biliar y responsable de gran parte de su morbimortalidad, no se ha relacionado en forma suficiente con los hallazgos endosonográficos. Nuestro estudio buscó definir la validez diagnóstica de la endosonografía en los pacientes con colangitis aguda con el fin de limitar la morbimortalidad del retraso diagnóstico. Se realizó un estudio descriptivo, analizando las historias clínicas de pacientes sometidos a endosonografía biliopancreática, por ictericia obstructiva de cualquier etiología, y quienes posteriormente fueron llevados a colangiopancreatografía retrógrada endoscópica (CPRE) para manejo de obstrucción biliar. Comparamos los hallazgos endosonográficos compatibles con colangitis aguda (engrosamiento de la vía biliar de 1,5 mm o más, presencia de halo pericolangítico de al menos 1,5 cm de longitud y presencia de contenido de ecogenicidad mixta en el interior de la vía biliar) con el drenaje purulento durante la CPRE. Se encontró una alta frecuencia de estos hallazgos en los pacientes con colangitis, y el engrosamiento de las paredes de la vía biliar fue el más común, en el 92,6% de los casos, seguido por la presencia de halo pericolangítico en el 59,3% de los casos y contenido ductal en el 66,7% de los casos. Igualmente, se encontró asociación ascendente de las frecuencias con grado de severidad de la colangitis. Resulta recomendable realizar estudios con un mayor poder estadístico que permitan validar nuestros resultados para una futura inclusión de la EUS en el algoritmo diagnóstico de las guías de práctica clínica en colangitis aguda.

Abstract Diagnosis of obstructive cholangiopathy with biliopancreatic endosonography (BUS) has been extensively studied, and its role in the diagnosis of choledocholithiasis, biliopancreatic junction tumors and extrinsic biliary compression syndromes is widely recognized. Endosonographic diagnosis of cholangitis, a more frequent complication of biliary obstruction which is responsible for much of its morbidity and mortality, has not been sufficiently studied. Our study's objective is to define the diagnostic validity of endosonography for patients with acute cholangitis in order to limit morbidity and mortality due to diagnostic delay. This is a descriptive study that analyzes clinical histories of patients who underwent biliopancreatic endosonography because of obstructive jaundice of any etiology and who later underwent endoscopic retrograde cholangiopancreatography (ERCP) to manage biliary obstruction. We compared endosonographic findings compatible with acute cholangitis: thickening of the bile duct of 1.5 mm or more, periportal halo sign of at least 1.5 cm in length, mixed echogenicity of bile duct content, and purulent drainage during ERCP. Patients with cholangitis most frequently presented thickened gallbladders (92.6% of cases) periportal halo signs (59.3% of cases) and mixed echogenicity of bile duct content (66.7% of cases). We also found an ascending association of frequencies with the degree of severity of cholangitis. Studies with greater statistical power are needed for validation of our results and for future inclusion of EUS in the diagnostic algorithm for clinical practice guidelines in cases of acute cholangitis.
Descritores: Colangite
Endossonografia
-Colestase
Radioterapia Guiada por Imagem
Responsável: CO304.1 - Biblioteca Arturo Aparicio Jaramillo


  5 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-774529
Autor: Moraes, Fabio Ynoe de; Taunk, Neil Kanth; Laufer, Ilya; Neves-Junior, Wellington Furtado Pimenta; Hanna, Samir Abdallah; Carvalho, Heloisa de Andrade; Yamada, Yoshiya.
Título: Spine radiosurgery for the local treatment of spine metastases: Intensity-modulated radiotherapy, image guidance, clinical aspects and future directions
Fonte: Clinics;71(2):101-109, Feb. 2016. tab, graf.
Idioma: en.
Resumo: Many cancer patients will develop spinal metastases. Local control is important for preventing neurologic compromise and to relieve pain. Stereotactic body radiotherapy or spinal radiosurgery is a new radiation therapy technique for spinal metastasis that can deliver a high dose of radiation to a tumor while minimizing the radiation delivered to healthy, neighboring tissues. This treatment is based on intensity-modulated radiotherapy, image guidance and rigid immobilization. Spinal radiosurgery is an increasingly utilized treatment method that improves local control and pain relief after delivering ablative doses of radiation. Here, we present a review highlighting the use of spinal radiosurgery for the treatment of metastatic tumors of the spine. The data used in the review were collected from both published studies and ongoing trials. We found that spinal radiosurgery is safe and provides excellent tumor control (up to 94% local control) and pain relief (up to 96%), independent of histology. Extensive data regarding clinical outcomes are available; however, this information has primarily been generated from retrospective and nonrandomized prospective series. Currently, two randomized trials are enrolling patients to study clinical applications of fractionation schedules spinal Radiosurgery. Additionally, a phase I clinical trial is being conducted to assess the safety of concurrent stereotactic body radiotherapy and ipilimumab for spinal metastases. Clinical trials to refine clinical indications and dose fractionation are ongoing. The concomitant use of targeted agents may produce better outcomes in the future.
Descritores: Radiocirurgia/métodos
Radioterapia Guiada por Imagem/métodos
Radioterapia de Intensidade Modulada/métodos
Neoplasias da Coluna Vertebral/cirurgia
-Ensaios Clínicos como Assunto
Imobilização
Dor/radioterapia
Radiocirurgia/tendências
Neoplasias da Coluna Vertebral/secundário
Limites: Humanos
Tipo de Publ: Revisão
Responsável: BR1.1 - BIREME


  6 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Tsuji, Domingos Hiroshi
Texto completo
Id: lil-741039
Autor: Vasconcelos, Silvio José de; Leão, Rodrigo Augusto Souza; Bernardino-Araújo, Sidcley; Lira, Mariana Montenegro de Melo; Tsuji, Domingos Hiroshi.
Título: Effect of sugarcane biopolymer in vocal fold of rabbits. Comparative study with calcium hydroxyapatite
Fonte: Acta cir. bras;30(3):186-193, 03/2015. tab, graf.
Idioma: en.
Resumo: PURPOSE: To compare the inflammatory reaction caused by the injection of a sugarcane biopolymer (SCB) into the vocal fold of rabbits with that caused by calcium hydroxyapatite (CaH). METHODS: CaH (Radiesse(r)) and SCB gel were injected respectively into the right and left vocal cords of thirty rabbits. The rabbits were distributed into two equal groups and sacrificed at three and twelve weeks after injection. We then evaluated the intensity of the inflammatory reaction, plus levels of neovascularization, fibrogenesis and inflammatory changes in the vocal mucosa. RESULTS: The vocal cords injected with CaH had a stronger inflammatory reaction by giant cells in both study periods. The SCB group had a more intense inflammatory involvement of polymorphonuclear cells three weeks after injection. SCB caused a higher level of neovascularization compared with CaH three weeks after the procedure. CONCLUSION: Whereas calcium hydroxyapatite triggers a more intense and lasting inflammatory reaction mediated by giant cells, sugarcane biopolymer causes a greater response from polymorphonuclear leukocytes, as well as higher levels of vneoascularization three weeks after injection. .
Descritores: Calcinose
Neoplasias da Próstata
Interpretação de Imagem Radiográfica Assistida por Computador/métodos
Radioterapia Guiada por Imagem/métodos
Tomografia Computadorizada Espiral/métodos
-Calcinose/radioterapia
Neoplasias da Próstata/radioterapia
Reprodutibilidade dos Testes
Intensificação de Imagem Radiográfica/métodos
Sensibilidade e Especificidade
Limites: Idoso
Humanos
Masculino
Responsável: BR1.1 - BIREME


  7 / 8 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-711703
Autor: Freilich, Jessica M.; Spiess, Philippe E.; Biagioli, Matthew C.; Fernandez, Daniel C.; Shi, Ellen J.; Hunt, Dylan C.; Gupta, Shilpa; Wilder, Richard B..
Título: Lipiodol as a Fiducial Marker for Image-Guided Radiation Therapy for Bladder Cancer
Fonte: Int. braz. j. urol;40(2):190-197, Mar-Apr/2014. tab, graf.
Idioma: en.
Resumo: Purpose To evaluate Lipiodol as a liquid, radio-opaque fiducial marker for image-guided radiation therapy (IGRT) for bladder cancer.Materials and Methods Between 2011 and 2012, 5 clinical T2a-T3b N0 M0 stage II-III bladder cancer patients were treated with maximal transurethral resection of a bladder tumor (TURBT) and image-guided radiation therapy (IGRT) to 64.8 Gy in 36 fractions ± concurrent weekly cisplatin-based or gemcitabine chemotherapy. Ten to 15mL Lipiodol, using 0.5mL per injection, was injected into bladder submucosa circumferentially around the entire periphery of the tumor bed immediately following maximal TURBT. The authors looked at inter-observer variability regarding the size and location of the tumor bed (CTVboost) on computed tomography scans with versus without Lipiodol.Results Median follow-up was 18 months. Lipiodol was visible on every orthogonal two-dimensional kV portal image throughout the entire, 7-week course of IGRT. There was a trend towards improved inter-observer agreement on the CTVboost with Lipiodol (p = 0.06). In 2 of 5 patients, the tumor bed based upon Lipiodol extended outside a planning target volume that would have been treated with a radiation boost based upon a cystoscopy report and an enhanced computed tomography (CT) scan for staging. There was no toxicity attributable to Lipiodol.Conclusions Lipiodol constitutes a safe and effective fiducial marker that an urologist can use to demarcate a tumor bed immediately following maximal TURBT. Lipiodol decreases inter-observer variability in the definition of the extent and location of a tumor bed on a treatment planning CT scan for a radiation boost.
Descritores: Carcinoma/radioterapia
Meios de Contraste
Óleo Etiodado
Marcadores Fiduciais
Radioterapia Guiada por Imagem/métodos
Neoplasias da Bexiga Urinária/radioterapia
-Carcinoma/patologia
Carcinoma
Cistoscopia/métodos
Estadiamento de Neoplasias
Variações Dependentes do Observador
Valores de Referência
Reprodutibilidade dos Testes
Estatísticas não Paramétricas
Resultado do Tratamento
Carga Tumoral
Neoplasias da Bexiga Urinária/patologia
Neoplasias da Bexiga Urinária
Limites: Adulto
Humanos
Pessoa de Meia-Idade
Tipo de Publ: Estudo de Avaliação
Responsável: BR1.1 - BIREME


  8 / 8 LILACS  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-593328
Autor: Chojniak, Rubens.
Título: Imagem em oncologia no CBR / Imaging in oncology at CBR
Fonte: Radiol. bras;44(3):v-v, maio-jun. 2011.
Idioma: pt.
Descritores: Diagnóstico por Imagem
Oncologia
Oncologia/tendências
Tecnologia Radiológica
-Radioterapia Guiada por Imagem
Tecnologia Radiológica/tendências
Limites: Humanos
Responsável: BR734.1 - Biblioteca Central Cesar Lattes - BCCL



página 1 de 1
   


Refinar a pesquisa
  Base de dados : Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde