Basic principles and technique of diffusion-weighted imaging and diffusion tensor imaging.

CONCLUSION: Diffusion-weighted MRI is an established technique for the assessment of pathological processes. Although DWI is mainly applied in stroke diagnostics, it is increasingly being used to detect and characterize various lesions in the brain as well as in the whole body. With new sequence techniques imaging artefacts can be significantly reduced. In addition, DTI allows the reconstruction and 3-dimensional visualization of tissue fibre structure. This method has proven to be clinically important primarily for the depiction of nerve tracts in the brain and spinal cord when planning surgical interventions and radiation therapy. PMID: 26330214 [PubMed - as supplied by publisher]
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research

Related Links:

Radiation therapy can cause cerebral arteriopahty, resulting in ischemic stroke. We document late-delayed cerebral arteriopathy by high-resolution magnetic resonance imaging (HR-MRI) in a middle aged man who h...
Source: BMC Neurology - Category: Neurology Authors: Tags: Case report Source Type: research
The purpose of this case report is to document a protracted course of recovery and the deficits exhibited by a person with SMART syndrome.
Source: Archives of Physical Medicine and Rehabilitation - Category: Rehabilitation Authors: Source Type: research
We examined human lung tissue from COPD patients and normal control subjects, and found a substantial increase in p16-expressing alveolar cells in COPD patients. Using a transgenic mouse deficient for p16, we demonstrated that lungs of mice lacking p16 were structurally and functionally resistant to CS-induced emphysema due to activation of IGF1/Akt regenerative and protective signaling. Fat Tissue Surrounds Skeletal Muscle to Accelerate Atrophy in Aging and Obesity https://www.fightaging.org/archives/2019/09/fat-tissue-surrounds-skeletal-muscle-to-accelerate-atrophy-in-aging-and-obesity/ Researchers her...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Abstract PURPOSE: To identify genetic risk factors associated with risk of stroke among survivors of childhood cancer treated with cranial radiation therapy (CRT). EXPERIMENTAL DESIGN: We analyzed whole-genome sequencing (36.8-fold) data of 686 childhood cancer survivors of European ancestry [median (range): 40.4 (12.4-64.7) years old; 54% male] from the St. Jude Lifetime Cohort study treated with CRT, of whom 116 (17%) had clinically-diagnosed stroke. Association analyses (single-variant and Burden/SKAT tests) were performed, adjusting for demographic characteristics and childhood cancer treatment exposures....
Source: Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Clin Cancer Res Source Type: research
AbstractPurpose of ReviewTo review the latest information about the interactions between cancer and cerebrovascular disease.Recent FindingsAdditional data support the finding that both ischemic and hemorrhagic stroke are important complications of cancer or its treatment. Reperfusion therapy is being given successfully to patients with stroke complicating cancer.SummaryHemorrhagic stroke may occur with metastatic disease to the brain, coagulopathies from cancer, in particular leukemia, or as complications of chemotherapy. Ischemic stroke also may be a complication of metastatic disease with local invasion of vessels, a pro...
Source: Current Neurology and Neuroscience Reports - Category: Neuroscience Source Type: research
Radiation therapy can cause arteries to scar or thicken, leading to blockages that can result in heart attacks and strokes. Statins work by keeping plaques from building up in blood vessels, preventing blockages.
Source: WebMD Health - Category: Consumer Health News Source Type: news
WEDNESDAY, June 19, 2019 -- For cardiac patients with thorax and head or neck cancer, statin use after radiation therapy is associated with a significant reduction in stroke incidence and a trend toward reduced cardiovascular and cerebrovascular...
Source: Drugs.com - Pharma News - Category: Pharmaceuticals Source Type: news
A 13-year-old female was diagnosed with a ponto- medullary brainstem glioma and following unsuccessful treatment with chemotherapy, underwent focal photon intensity modulated radiation therapy that resulted in a favorable response. Ten years later, the patient presented with acute onset left-sided hemiplegia and headaches. Magnetic resonance imaging (MRI) at presentation showed a large contrast- enhancing lesion with surrounding vasogenic edema and reduced diffusivity on diffusion- weighted imaging most concerning for a high grade secondary malignancy (Figure 1).
Source: Pediatric Neurology - Category: Neurology Authors: Tags: Short Communication Source Type: research
This 13-year-old girl was diagnosed with a ponto-medullary brainstem glioma, and following unsuccessful treatment with chemotherapy, she underwent focal photon intensity-modulated radiation therapy that resulted in a favorable response. Ten years later, she presented with acute left hemiplegia and headaches. Magnetic resonance imaging (MRI) at presentation showed a large contrast-enhancing lesion with surrounding vasogenic edema and reduced diffusivity on diffusion-weighted imaging, most concerning for a high-grade secondary malignancy (Fig 1).
Source: Pediatric Neurology - Category: Neurology Authors: Tags: Clinical Letter Source Type: research
1128Introduction: Tissues with low levels of oxygen often respond poorly to radiation therapy and chemo / immune therapies. Hypoxia in tumor bearing tissue is associated with worse clinical outcome and this has been known for over 50 years. Alterations to radiation therapy planning via providing localized boost to hypoxic tissues cannot be made without knowing exactly where hypoxia exists. However, there is no FDA approved agent to assess for hypoxia in tumor tissues, there is no accepted standard methodology for measuring hypoxia in patients, nor are there FDA approved agents for treating hypoxia. There are multiple PET i...
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Educational Exhibit Posters Source Type: research
More News: Brain | Neurology | Radiation Therapy | Radiology | Stroke