MRI

Heavy use of marijuana may put adolescents who are genetically predisposed to schizophrenia at greater risk of developing the brain disorder, according to a study presented at the 2005 RSNA meeting.

Cognitively healthy elderly people who experience atrophy in the amygdala and hippocampus have a good chance of developing dementia, according to a study from the Netherlands in the January issue of Archives of General Psychiatry.

Hyperpolarized helium-3 diffusion MR can detect alveolar changes due to lung disease in children and provide quantitative data on airflow to the peripheral lobes, according to research presented at the RSNA meeting.

Early diagnosis of femoro-acetabular impingement syndrome could prevent degenerative arthritis of the hip. It may keep young patients from potentially expensive, and possibly disastrous, invasive treatment interventions, according to research presented at the RSNA meeting.

Philips Medical Solutions wants operators of its MR scanners to work smarter, not harder. To help, the company developed SmartExam.

Early diagnosis of femoro-acetabular impingement syndrome could prevent degenerative arthritis of the hip. In addition, it may keep young patients from potentially expensive, and possibly disastrous, invasive treatment interventions, according to research presented at the RSNA meeting.

The fact that metal and MRI do not mix has, until recently, thwarted attempts to develop hybrid PET/MR scanners. Now engineers are maneuvering around the problem by eliminating the metal from PET scanners.

Diffusion tensor imaging, an MR technique that produces images based on the orientation of water molecules, has mainly been used to evaluate brain white matter diseases. Now, Stanford University researchers have combined DTI with computer-generated musculoskeletal models to plan gait-correcting surgeries in children with cerebral palsy.

MR-guided focused ultrasound surgery is a safe, effective treatment for uterine fibroids, according to the results of a new multicenter trial presented at the RSNA meeting.

Although neurosurgeons depend on preoperative functional MRI to map eloquent brain areas, technique standards need strengthening and reimbursement is nonexistent. The recent formation of a dedicated fMRI society is serving to galvanize interest and search for solutions to these and other issues, according to a Wednesday panel discussion.

Philips Medical Solutions wants operators of its MR scanners to work smarter, not harder. To help, the company developed SmartExam.

Academic radiologists usually cut to the chase in describing how imaging increasingly factors into drug discovery and research. They display cellular metabolism FDG-PET images or dynamic-contrast MR images quantifying changes in tumor vascularity. These glamor children of radiological research reflect the potential of medical imaging in measuring therapeutic response.

Although the debate regarding MR colonography screening lives on, European radiologists agree dark lumen MRC is ready for prime time, according to studies presented Tuesday.

Siemens demonstrated hands-off imaging at the RSNA with a work in progress that turns control of an MR scanner over to remote operators. The goal behind Expert-I, which is pending FDA clearance, is to allow expert collaboration on challenging examinations regardless of how far away the expert may be.

Academic radiologists usually cut to the chase in describing how imaging increasingly factors into drug discovery and research. They display cellular metabolism FDG-PET images or dynamic-contrast MR images quantifying changes in tumor vascularity. These glamor children of radiological research reflect the potential of medical imaging in measuring therapeutic response.

Hyperpolarized helium-3 diffusion MR can detect alveolar changes due to lung disease in children and provide quantitative data on airflow to the peripheral lobes, according to research presented Tuesday.

The message of a Monday morning interventional session at the RSNA meeting was clear: When it comes to embolization of uterine fibroids, all embolic agents are not created equal.

Myelination, the development of a protective sheath for nerve fibers, may dramatically increase when adults enter their forties before beginning to decline in old age, according to a study presented Sunday at the RSNA meeting. The finding contradicts long-held beliefs that myelination is a normal process of brain maturation that is largely complete by early adulthood.

High-field 3D MR angiography can put up a good fight against conventional x-ray digital subtraction angiography for the diagnosis of brain aneurysms and other intracranial vascular malformations, according to studies presented at the RSNA meeting Monday. Three-D MRA also provides reliable follow-up after treatment.

Myelination, the development of a protective sheath for nerve fibers, may dramatically increase when adults enter their forties before beginning to decline in old age, according to a study presented Sunday. The finding contradicts long-held beliefs that myelination is a normal process of brain maturation that is largely complete by early adulthood.

GE Healthcare played to high-field enthusiasts visiting the RSNA exhibit floor Sunday, unveiling three MR scanners – one at 3T and two at 1.5T.

There was a time when all that really mattered in medical imaging was technology that dealt with, well, medicine. That’s changed. Though clinical molecular imaging using advanced biomarkers is still a ways away, we’ve opened the door a crack to use miniature PET scanners in animal research with these agents. Now one of life’s inevitabilities is wedging the door open a bit more.

A new study offers a comprehensive overview of imaging techniques to evaluate blood-brain barrier permeability, research that is key to understanding the most effective way to treat brain tumors.

Whole-body MRI with a nonenhanced imaging sequence can provide accurate staging of lymphoma. Contrast agents and other improvements could take this accuracy even further, making MRI an alternative to CT and PET, according to researchers at Mater Misericordiae Hospital in Dublin.

A novel approach registers images from different scan directions to correct motion artifacts in cardiac MRI.

Molecular imaging tracers, agents, and probes have been cast in a new tactical assemblage designed to improve investigational drug evaluations.

To paraphrase Mark Twain, reports of the death of diagnostic MR spectroscopy are greatly exaggerated. CPT 76390 is considered standard of care as an effective imaging technique for the diagnosis, treatment, and monitoring of patients with brain lesions by Cigna Healthcare, a respected healthcare provider,1 though declared "investigational" by Blue Shield, Anthem, and Medicare. Radiologists and other physicians are confused and annoyed by some insurers' refusal to reimburse for their MRS services.

Discoveries relating to the imaging of hypoxia, angiogenesis, and ligand receptors demonstrate the scientific prowess of the In vivo Cellular Molecular Imaging Center at Johns Hopkins University and justify its reputation as one of the top molecular imaging laboratories in the world.

Exquisite images of the brain, spine, body, and joints will adorn vendors' booths at the RSNA meeting, attesting to the benefits of clinical 3T. But, unlike the many ultrahigh-field MR scans that vendors have displayed in the past, most of these 3T images will come from systems designed for everyday clinical practice.

Computer-aided detection is evolving from an interesting technological trapping to a standard of care. Part of that process involves the ongoing iterative advancement expected to be on display at the RSNA meeting.