Tomography News and Research

RSS

Orbitofrontal cortex abnormality characteristic of deficit schizophrenia

The orbitofrontal cortex appears to play an important role in the development of severe negative symptoms in people with deficit schizophrenia, researchers suggest.

25 Jan 2013

UCLA researchers identify abnormal tau proteins associated with sports-related concussions

Sports-related concussions and mild traumatic brain injuries have grabbed headlines in recent months, as the long-term damage they can cause becomes increasingly evident among both current and former athletes. The Centers for Disease Control and Prevention estimates that millions of these injuries occur each year.

23 Jan 2013

Neurophysiologic mechanisms of deep-brain stimulation unveiled

The beneficial effects of subthalamic nucleus stimulation in patients with Parkinson’s disease are partly down to compensatory activation of nonmotor dopamine pathways during exercise, research suggests.

22 Jan 2013

Amyloid clue to Parkinson’s dementia

Study findings link amyloid β burden to future cognitive decline in patients with Parkinson’s disease.

22 Jan 2013

New imaging method for study of insulin-producing cells in diabetes

A new imaging method for the study of insulin-producing cells in diabetes among other uses is now being presented by a group of researchers at Umeå University in Sweden in the form of a video in the biomedical video journal, The Journal of Visualized Experiments.

21 Jan 2013

Degree of emphysema predicts mortality in ever-smokers with or without COPD

Severity of emphysema, as measured by computed tomography (CT), is a strong independent predictor of all-cause, cardiovascular, and respiratory mortality in ever-smokers with or without chronic obstructive pulmonary disease (COPD), according to a study from researchers in Norway. In patients with severe emphysema, airway wall thickness is also associated with mortality from respiratory causes.

18 Jan 2013

Dopamine synthesis increased in patients at high risk for psychosis

UK study results show that patients at ultra-high risk for psychosis have elevated dopamine synthesis capacity in the dorsal striatum.

17 Jan 2013

Quarter of incident lung cancer slow growing or indolent

A quarter of incident lung cancers are slow growing or indolent, and may be overdiagnosed, suggest results from sequential low-dose computed tomography screening.

17 Jan 2013

SPECT-CT improves preop foot diagnosis

Research demonstrates the usefulness of radionuclide bone scans with single photon-emission computed tomography and computed tomography for the assessment of patients awaiting foot or angle surgery.

16 Jan 2013

Emergency departments drained of resources for elderly

Plans are needed to accommodate the growing demands on emergency departments to provide suitable care for older individuals in the USA, say researchers.

15 Jan 2013

Aggressive surveillance questionable for eye melanoma recurrence

Patients treated for primary choroidal or ciliary body melanoma may not always benefit from an aggressive surveillance strategy for the detection of metastatic disease, caution US researchers.

14 Jan 2013

Study reports on development and testing of Hematuria Risk Index to predict cancer risk

Microscopic amounts of blood in urine have been considered a risk factor for urinary tract malignant tumors. However, only a small proportion of patients referred for investigation are subsequently found to have cancer. A new Kaiser Permanente Southern California study published in the February Mayo Clinic Proceedings reports on the development and testing of a Hematuria Risk Index to predict cancer risk.

10 Jan 2013

Tibial artery calcification predicts foot ulceration

Tibial artery calcification is a significant risk factor for foot ulcers in patients with Type 2 diabetes, research suggests.

9 Jan 2013

Abnormal fixation may contribute to deficits in face perception in AMD patients

Abnormalities of eye movement and fixation may contribute to difficulty in perceiving and recognizing faces among older adults with age-related macular degeneration (AMD), suggests a study "Abnormal Fixation in Individuals with AMD when Viewing an Image of a Face" appearing in the January issue of Optometry and Vision Science, official journal of the American Academy of Optometry.

9 Jan 2013

Study questions need for routine repeated CT scans in patients with mild head trauma

When initial computed tomography (CT) scans show bleeding within the brain after mild head injury, decisions about repeated CT scans should be based on the patient's neurological condition, according to a report in the January issue of Neurosurgery, official journal of the Congress of Neurological Surgeons.

4 Jan 2013

18F-FDG PET/CT may become important distant staging modality in patients with breast cancer

New research published in the January issue of The Journal of Nuclear Medicine shows that 18F-fludeoxyglucose (18F-FDG) positron emission tomography (PET)/computed tomography (CT) imaging offers significant prognostic stratification information at initial staging for patients with locally advanced breast cancer. When compared to conventional imaging, 18F-FDG PET/CT more accurately showed lesions in the chest, abdomen and bones in a single session, changing management for more than 50 percent of the patients in the study.

3 Jan 2013

Electroconvulsive therapy releases opiate-like substances

Researchers used electricity on certain regions in the brain of a patient with chronic, severe facial pain to release an opiate-like substance that's considered one of the body's most powerful painkillers.

3 Jan 2013

New analysis on global trends in medical imaging for cardiology applications

The promise of cost and clinical benefits are spurring the penetration of imaging modalities in cardiac applications. While demographics are favouring market growth, cardiac imaging device manufacturers will have to focus on innovative, patient-friendly products that promote greater safety and easier operability.

2 Jan 2013

New insights into devastating second impact syndrome

Physicians at Indiana University School of Medicine and the Northwest Radiology Network (Indianapolis, Indiana) report the case of a 17-year-old high school football player with second impact syndrome (SIS). A rare and devastating traumatic brain injury, SIS occurs when a person, most often a teenager, sustains a second head injury before recovery from an earlier head injury is complete.

2 Jan 2013

Stent placement ‘effective alternative to IVT in stroke patients’

In stroke patients in whom intravenous thrombolysis is either contraindicated or has failed, intra-arterial revascularization with cerebral angioplasty and stent placement is an effective and well-tolerated treatment, say Czech researchers.

31 Dec 2012