Verifying tumor position during stereotactic body radiation therapy delivery using (limited-arc) cone beam computed tomography imaging.

CONCLUSIONS: (Limited-arc) CBCT reconstructions of kV images acquired during irradiation can identify the dominant position of the tumor during treatment delivery. PMID: 28532606 [PubMed - as supplied by publisher]
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Tags: Radiother Oncol Source Type: research

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ConclusionAdrenal neuroblastoma in elderly adults is a very rare disease with sparse data available in the literature. Early stage disease could be managed by surgical resection alone. However, the prognosis is significantly worse than that observed in pediatric patients. Further research focusing on tumor biology and therapy for this rare malignancy in adults may help to improve disease outcome.
Source: Journal of Medical Case Reports - Category: General Medicine Source Type: research
Restaging computed tomography scans of the chest/abdomen/pelvis are needed to assess extracranial disease  burden and determine whether there is an accessible lesion for biopsy (if systemic therapy will be considered).1 Furthermore, this serves to rule out the potential of another primary that may warrant whole-brain radiation therapy consideration (ie, small cell lung cancer).
Source: International Journal of Radiation Oncology * Biology * Physics - Category: Radiology Authors: Tags: Gray Zone Source Type: research
DiscussionThe goal of this trial is a further reduction of the radiation dose in patients with nodal early-stage FL showing a good response to a combination of LDRT and anti-CD20 immunotherapy and a comparison with the currently published MIR trial.Trial registrationEudraCT number: 2016-002059-89. identifier:NCT03341520.
Source: Trials - Category: Research Source Type: clinical trials
AbstractRationaleThe use of 16 α-[18F]fluoro-17 β-estradiol (FES) positron emission tomography (PET) in clinical dilemmas and for therapy decision-making in lesions expressing estrogen receptors is growing. However, on a considerable number of FES PET scans, previously performed in a research and clinical setting in our institution, FES uptake w as noticed in the lungs without an oncologic substrate. We hypothesized that this uptake was related to pulmonary fibrosis as a result of radiation therapy. This descriptive study therefore aimed to investigate whether radiation therapy in the thoracic area is possibly r...
Source: EJNMMI Research - Category: Radiology Source Type: research
This study dosimetrically compares functional liver image-guided hepatic therapy (FLIGHT) to standard stereotactic body radiation therapy (SBRT) plans. In the FLIGHT plans, functional data from hepatobiliary iminodiacetic acid (HIDA) single photon emission computed tomography (SPECT) scans serve as a road map to guide beam arrangement. While meeting the same target volume coverage, plans are optimized to reduce dose to high-functioning liver.
Source: Medical Dosimetry - Category: Radiology Authors: Source Type: research
Abstract BACKGROUND: Hybrid imaging FDG PET/CT (18F‑fluordeoxyglucose positron emission tomography/computed tomography) has gained increasing importance in oncology in recent years. DIAGNOSIS: A focal increase in FDG uptake in the gastrointestinal tract may be due to colorectal carcinoma. Such a finding requires further clarification. PRIMARY STAGING: Staging of the primary and locoregional lymph nodes remains a domain of established imaging modalities as FDG PET/CT does not provide a clear additional benefit. Liver metastases can be detected with high sensitivity by FDG PET/CT, but...
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research
We present the case of a patient with vertebral dissemination from an intracranial GBM without intra-dural space invasion. The patient underwent a gross total tumor removal followed by radiation therapy (RT) with concomitant temozolomide chemotherapy (STUPP protocol).Following the appearance of back pain, patient underwent whole body computed tomography (CT) and spinal magnetic resonance imaging (MRI) scan.Spinal-MRI highlighted multiple vertebral lesions not infiltrating dura mater being confined to vertebral bodies. CT scan demonstrated the absence of other repetitive lesions in both thorax and abdomen. Histological exam...
Source: Interdisciplinary Neurosurgery - Category: Neurosurgery Source Type: research
CONCLUSION: Functional lung avoidance planning may promote increased post-treatment perfusion in low dose regions for select patients, though inter-patient variability remains high in unbalanced cohorts. These preliminary findings form testable hypotheses that warrant subsequent validation in larger cohorts within randomised or case-matched control investigations. ADVANCES IN KNOWLEDGE: This novel preliminary study reports differences in dose-response relationships between patients receiving functional lung avoidance radiation therapy (FLARE-RT) and those receiving conventionally planned radiation therapy (LUNG-RT). F...
Source: The British Journal of Radiology - Category: Radiology Authors: Tags: Br J Radiol Source Type: research
AbstractPositron emission tomography/computed tomography (PET/CT) is a standard procedure for imaging cancer commonly used in the clinical practice for several diseases, in particular for cancer staging, restaging, treatment monitoring and radiation therapy planning. Despite the availability of many radiotracers, 18F-fluoro-2-deoxy-2-d-glucose ([18F]FDG) is the most used. International PET/CT guidelines propose protocols for patients ’ correct preparation before [18F]FDG injection, in particular with the regard of diabetic patients and therapy management. Hyperglycemic conditions and oral or insulin medication showed...
Source: Acta Diabetologica - Category: Endocrinology Source Type: research
In this study we evaluate the lesion detection efficacy of18F-DCFPyL PET/CT in patients with BCR and determine the detection efficacy as a function of their PSA value.MethodsA total of 248 consecutive patients were evaluated and underwent scanning with18F-DCFPyL PET/CT for BCR between November 2016 and 2018 in two hospitals in the Netherlands. Patients were examined after radical prostatectomy (52%), external-beam radiation therapy (42%) or brachytherapy (6%). Imaging was performed 120  min after injection of a median dose of 311 MBq18F-DCFPyL.ResultsIn 214 out of 248 PET/CT scans (86.3%), at least one lesion sug...
Source: European Journal of Nuclear Medicine and Molecular Imaging - Category: Nuclear Medicine Source Type: research
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