Eric Barnes

CT
AuntMinnie.com Virtual Colonoscopy Insider
April 6, 2009
CT
Adding chest CT to VC not cost-effective, study finds
Adding a chest CT scan to screening virtual colonoscopy isn't cost-effective in a cohort of average-risk patients, a new model-based analysis concluded. Although the additional anatomic coverage increased the clinical efficiency of CT-based screening, the combined test would not detect enough serious pathology to cover the costs of detection and follow-up of disease.
April 6, 2009
CT
MDCT holds promise for advanced osteoporosis scan
CT could become an important player in the emerging field of structural bone assessment, according to researchers from Berlin and San Francisco. They believe the modality is capable of evaluating trabecular structures from the extremities to the vertebrae, outperforming even high-resolution peripheral quantitative CT (HR-pQCT) in some conditions.
April 5, 2009
2009 04 01 13 19 49 372 Issever thumb 04 09
CT
Virtual colonoscopy CAD finds most cancers
A computer-aided detection (CAD) algorithm designed to find polypoid lesions of the colon also does fairly well at finding frank cancers, researchers from the U.K. concluded. But sensitivity varies depending on the system settings and the quality of the prep.
April 2, 2009
CT
AuntMinnie.com CT Insider
April 1, 2009
Nuclear Medicine
CT for brain metastasis unnecessary after PET/CT
A CT scan is often ordered to find brain metastases in lung cancer patients. But if a whole-body PET/CT scan is already available from the original workup, there's no need for a dedicated CT scan, according to researchers from Belgium, who found that the CT portion of the PET/CT scan is enough for the initial diagnosis.
April 1, 2009
2009 04 01 15 40 34 412 Dewever thumb 03 09
Image Processing
Automated CT volumetry of lymph nodes gauges treatment response
Cancer patients who respond to neoadjuvant therapy have a better prognosis than nonresponders, of course, but with the exception of FDG-PET, reductions in the size of tumors treated with chemotherapy or radiation have been difficult to gauge using imaging modalities that are capable of delineating the anatomy.
March 26, 2009
CT
VC/AAA screening combo cost-effective in older adults
A new analytic model has found that virtual colonoscopy is a highly cost-effective colon cancer screening method for older adults in the Medicare population, especially when combined with screening for abdominal aortic aneurysm (AAA), a test performed using the same CT dataset at little additional cost.
March 25, 2009
2009 03 26 10 00 54 744 Pickhardt thumb 03 09
CT
CT dose reductions don't impede detection of large renal calculi
For detecting renal calculi with CT, even dose reductions as high as 75% didn't reduce sensitivity for stones 3 mm and larger, according to a new study from Ohio's Cleveland Clinic. And because smaller stones are more likely to pass, significant dose reductions may be possible without missing the larger and more problematic calculi.
March 17, 2009
CT
Hyperplastic polyps flatten out with VC insufflation
When patients are scanned prone and supine for virtual colonoscopy, adenomatous polyps don't change much in size or shape. But a new study found that hyperplastic polyps tend to flatten out in VC compared to optical colonoscopy, to the point where they're harder to detect.
March 10, 2009
2009 03 10 15 00 40 975 Summers thumb 03 09 70
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