The purpose of this study was to evaluate the usefulness of high-resolution MRI (HR-MRI) and proton MR spectroscopy ((1)H-MRS) for monitoring the early therapeutic response to radiotherapy. Twenty rabbits with VX2 carcinoma were divided into control (n = 8) and irradiation (n = 12) groups. The irradiation group underwent HR-MRI and (1)H-MRS using a microscopy coil at 1, 3, 7 or 14 days after ir...

Abstract OBJECTIVE MRI is gold standard for the diagnosis, surgery and radiation therapy of patients with high-grade glioma. Amino acid PET useful in gliomas without contrast enhancement but it unknown whether better identifies foci than T1-sequence or improve definition high grade glioma infiltration related to T2/Flair images. METHODS More 400 biopsy specimens from twenty-three suspected were...

Introduction: The objective of this work is to study the ability of MRI normoxic polymer gel dosimetry system to be used to verify the calculated dose distribution, in a simple geometry, in clinical radiotherapy. Materials and Methods:  Initially, 2 liters of the normoxic MAGAT polymer gel was prepared and then poured into two cylindrical Perspex phantom (simu...

introduction: the purpose of this work was to study the ability of mri normoxic polymer gel dosimetry for evaluating the dose distribution in hdr brachytherapy of esophagial cancer at imam reza brachytherapy center (mashhad, iran). materials and methods: initially, 2liters of normoxic gel (magic) was fabricated and then poured into 12 calibration test tubes and placed in a perspex walled phanto...

Leiomyosarcoma is a rare neoplasm with poor survival rate. Between June 2018 to January 2019 we treated case of Prostate initially metastatic the lung and liver multiple pelviclymph nodes. Five cycles chemotherapy palliative radiotherapy have been delivered mean follow up 1 year .Chestabdominal-pelvic CT scan MRI bone are necessarily assess clinical staging. The objective this study review our ...

Background The superior soft tissue contrast of magnetic resonance imaging (MRI) compared to computed tomography (CT) has urged the integration of MRI and exclusion of CT in prostate radiotherapy treatment, referred to as an MRI-only workflow. Such a workflow can eliminate image registration errors between the CTand MR-images but incorporates multiple challenges. MR-images lack electron density...

Introduction: The purpose of this work was to study the ability of MRI normoxic polymer gel dosimetry for evaluating the dose distribution in HDR brachytherapy of esophagial cancer at Imam Reza brachytherapy center (Mashhad, Iran). Materials and Methods: Initially, 2liters of normoxic gel (MAGIC) was fabricated and then poured into 12 calibration test tubes and placed in a perspex walled phanto...

Introduction: Brain metastases represent the most common malignant brain tumors, affecting 20-40% of cancer patients. This article examines efficacy in toto encephalic radiotherapy treatment these metastases. Historically, before advent radiotherapy, prognosis for was poor, with a median survival one month. In has played crucial role improving and local control lesions. The aim this study to an...

BACKGROUND Atypical meningiomas are an intermediate grade brain tumour with a recurrence rate of 39-58 %. It is not known whether early adjuvant radiotherapy reduces the risk of tumour recurrence and whether the potential side-effects are justified. An alternative management strategy is to perform active monitoring with magnetic resonance imaging (MRI) and to treat at recurrence. There are no r...