Publications & Research
Purpose: The aim of this study was to assess the effect of applying ACR Lung-RADS in a clinical CT lung screening program on the frequency of positive and false-negative findings.
Methods: Consecutive, clinical CT lung screening examinations performed from January 2012 through May 2014 were retroactively reclassified using the new ACR Lung-RADS structured reporting system. All examinations had initially been interpreted by radiologists credentialed in structured CT lung screening reporting following the National Comprehensive Cancer Network’s Clinical Practice Guidelines in Oncology: Lung Cancer Screening (version 1.2012), which incorporated positive thresholds modeled after those in the National Lung Screening Trial. The positive rate, number of false-negative findings, and positive predictive value were recalculated using the ACR Lung-RADS-specific positive solid/part-solid nodule diameter threshold of 6 mm and nonsolid (ground-glass) threshold of 2 cm. False negatives were defined as cases reclassified as benign under ACR Lung-RADS that were diagnosed with malignancies within 12 months of the baseline examination.
Purpose: The aim of this study was to compare results of National Comprehensive Cancer Network (NCCN) high-risk group 2 with those of NCCN high-risk group 1 in a clinical CT lung screening program.
Methods: The results of consecutive clinical CT lung screening examinations performed from January 2012 through December 2013 were retrospectively reviewed. All examinations were interpreted by radiologists credentialed in structured CT lung screening reporting, following the NCCN Clinical Practice Guidelines in Oncology: Lung Cancer Screening (version 1.2012).
The Medical Imaging and Technology Alliance (MITA), a division of the National Electrical Manufacturers Association (NEMA), is the leading organization and collective voice of medical imaging equipment, radiation therapy and radiopharmaceutical manufacturers, innovators and product developers. It represents companies whose sales comprise more than 90 percent of the global market for medical imaging technology including those that produce:
- Medical X-ray equipment
- Computed tomography (CT) scanners
- Nuclear imaging
- Radiation therapy equipment
- Magnetic resonance imaging (MRI)
- Imaging information systems
Medical imaging technology is manufactured by hundreds of companies with operations located throughout the United States, and is utilized in tens of thousands of hospitals, clinics, urgent care centers and physicians’ and dentists’ offices. One state, where the manufacturing of high technology equipment like medical imaging equipment is particularly important is Washington.
Usually thought of as the home of aircraft or software manufacturing since both Boeing and Microsoft are headquartered in the Seattle area, Washington is also home to 37 medical imaging technology companies. The activities performed at these sites, along with the use of medical imaging equipment and technology at over 730 hospitals, urgent care facilities and other major medical clinics and offices located throughout the state, provide over 4,520 full-time equivalent jobs in the Evergreen State. In addition, suppliers and other companies directly related to the medical imaging industry generate an additional 7,600 full time equivalent positions.
Six-minute Magnetic Resonance Imaging Protocol for Evaluation of Acute Ischemic Stroke: Pushing the BoundariesJuly 2014
If magnetic resonance imaging (MRI) is to compete with computed tomography for evaluation of patients with acute ischemic stroke, there is a need for further improvements in acquisition speed. A 6-minute multimodal MR protocol with good diagnostic quality is feasible for the evaluation of patients with acute ischemic stroke and can result in significant reduction in scan time rivaling that of the multimodal computed tomographic protocol.
Offering Lung Cancer Screening to High-Risk Medicare Beneficiaries Saves Lives and is Cost-Effective: An Actuarial AnalysisJuly 2014
Background: By a wide margin, lung cancer is the most significant cause of cancer death in the United States and worldwide. The incidence of lung cancer increases with age, and Medicare beneficiaries are often at increased risk. Because of its demonstrated effectiveness in reducing mortality, lung cancer screening with low-dose computed tomography (LDCT) imaging will be covered without cost-sharing starting January 1, 2015, by nongrandfathered commercial plans. Medicare is considering coverage for lung cancer screening.
Objective: To estimate the cost and cost-effectiveness (ie, cost per life-year saved) of LDCT lung cancer screening of the Medicare population at high risk for lung cancer.
Clinical Implementation of the National Electrical Manufacturers Association CT Dose Check Standard at ACR Dose Index Registry SitesJuly 2014
The goal of the study was to determine if and how the National Electrical Manufacturers Association CT Dose Check standard has been implemented in clinical practice. A survey was conducted of all sites participating in the ACR Dose Index Registry, using a web based survey instrument, to determine whether respondents were aware of the CT Dose Check standard and the American Association of Physicists in Medicine (AAPM) recommendations for Dose Alert values, and if clinical sites had implemented it.
Positron emission tomography (PET) using 2-(18F)-flouro-2-deoxy-D-glucose (FDG) has emerged as a useful tool in the clinical work-up of lung cancer. This review article provides an overview of applications of PET in diagnosis, staging, treatment response evaluation, radiotherapy planning, recurrence assessment and prognostication of lung cancer.
A simple and quick MRI technique that offers promise for early diagnosis of Parkinson’s disease has been developed by researchers. The team demonstrated that their new MRI approach can detect people who have early-stage Parkinson’s disease with 85 percent accuracy. Parkinson’s disease is characterized by tremor, slow movement, and stiff and inflexible muscles. It’s thought to affect around 1 in 500 people.