July 1, 2008 Diagnostic Imaging. One-year mammography follow-up falls short ------------------------------------------------------------------------------- Women with diagnostic mammograms flagged as probably benign usually undergo short-interval follow-up. But at 12 months, this second look may not boost cancer detection. Erin Aiello Bowles, a research associate at the Group Health Center for Health Studies in Seattle, and colleagues at several U.S. institutions evaluated the accuracy of…
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July 1, 2008 Diagnostic Imaging. MSCT issue: Will a milligray a day keep the doctor away? By Shalmali Pal -------------------------------------------------------------------------------- Many imagers focus on limiting dose, but presentation looks at plusses from a little bit of radiation exposure When it comes to radiation dose, the news media, and the general public by extension, zero in one aspect only: risk, risk, and more risk. But what about any potential positive effects of exposure to…
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July 1, 2008 Diagnostic Imaging. MR spectroscopy glutamate measures reflect craving for heroin in addicts James Brice -------------------------------------------------------------------------------- New MR spectroscopy findings indicate that changes in brain glutamate levels reflect changes in heroin craving among addicts during methadone maintenance therapy. MRS may eventually help predict whether addicts will relapse after treatment. Animal studies have previously shown that glutamate is…
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July 1, 2008 Diagnostic Imaging. Molecular imaging enjoys progress on multiple fronts James Brice -------------------------------------------------------------------------------- From a pivotal study that may broaden Medicare's acceptance of FDG-PET to Raman spectroscopic techniques that promise a 1000-fold improvement in sensitivity compared with fluorescence imaging, the first half of 2008 will be remembered for fruitful molecular imaging research. As of June 1, the Centers for Medicare and…
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July 1, 2008 Diagnostic Imaging. Mid-year clinical update tracks radiology's course since the RSNA John C. Hayes -------------------------------------------------------------------------------- The RSNA is without doubt the big Kahuna of radiology medical meetings. With 60,000+ attendees and a program book that spans nearly 1000 pages in small type, the fall RSNA meeting sets the agenda for much of what goes on in radiology. But between the time the RSNA meeting closes shop in December and…
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July 1, 2008 Diagnostic Imaging. Las Vegas imaging center serves as proving ground Fast-paced AquilionOne workflow tests patient and data handling in preparation for commercial launch By Greg Freiherr -------------------------------------------------------------------------------- The patient who reported for a CT scan at the Spring Valley imaging center in Las Vegas complained of headaches, but the images returned by the newly installed AquilionOne CT scanner indicated something much worse was…
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July 1, 2008 Japanese hospital reports favorable experience with CAD-PACS integration Douglas Page -------------------------------------------------------------------------------- Temporal subtractions and nodule detection are the most common computer-aided detection systems available. Until recently, however, no report has described these CAD routines being integrated into PACS. That changed in March, when Japanese researchers at Kyushu University reported their four-year experience…
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July 1, 2008 Diagnostic Imaging. Insurance filter sorts work list for teleradiologists John C. Hayes -------------------------------------------------------------------------------- A system presented at the SIIM meeting is able to develop work lists based on a patient's insurance and a radiologist's credentialing status, which are important considerations as more studies are interpreted away from central offices and facilities try to maximize reimbursement. The original inspiration for the…
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July 1, 2008 Diagnostic Imaging. Innovators team with vendors to broaden access to new tools Exhibitors at annual imaging informatics conference showcase native integrations and plug-ins designed to complement, supplement PACS By Greg Freiherr -------------------------------------------------------------------------------- Advanced visualization is worming its way into PACS. Once-dedicated workstations are being democratized to support network access, thin-client servers gel with PACS, and…
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July 1, 2008 Diagnostic Imaging. High-tech suite of the future integrates imaging, robotics H. A. Abella -------------------------------------------------------------------------------- Researchers in the field of interventional radiology have looked relentlessly for new ways to improve the accuracy, outcomes, and cost of their image-guided treatments. They have experimented with various tracking and navigational devices as well as robotics. Until now, these technologies have remained outside…
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July 1, 2008 Diagnostic Imaging. High school student glimpses radiology through PE research Young man from Hawai’i learns an appreciation of medicine while comparing relative merits of D-dimer and pulmonary CT angiography H. A. Abella -------------------------------------------------------------------------------- The striking youthful looks of lead investigator Travis Ing seemed not to distract the audience from the main point of his paper presentation, which identified an expanded role for…
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July 1, 2008 Diagnostic Imaging. Functional MRI measures effects of liver treatment H. A. Abella -------------------------------------------------------------------------------- Interventional radiologists brought in palliative and potentially curative treatments for liver cancer. They are now also offering new ways to assess the effectiveness of these therapies. In January, researchers at Johns Hopkins University published results of a seminal study on the use of diffusion and perfusion MRI to…
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July 1, 2008 Diagnostic Imaging. fMRI shows social drinkers can't escape alcohol traps -------------------------------------------------------------------------------- Minimally invasive repair of painful vertebral compression fractures has become an established treatment for osteoporosis. The development of similar techniques to treat other fractures caused by age and metastatic disease could be a cost-effective way to deal with declining reimbursements and a growing elderly population.…
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July 1, 2008 Diagnostic Imaging. fMRI predicts benign brain tumors that turn malignant -------------------------------------------------------------------------------- Perfusion-weighted MRI can anticipate the transformation of low-grade gliomas into malignant tumors up to a year earlier than other imaging tests, according to researchers. The technique could help select patients who may benefit from more aggressive treatment. Adam Waldman, Ph.D., and colleagues at the Charing Cross Hospital in…
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July 1, 2008 Diagnostic Imaging. Fibroid patients still don't know about embolization H. A. Abella -------------------------------------------------------------------------------- Women with uterine fibroids remain in the dark about the potential benefits of uterine artery embolization more than a decade after the development of the nonsurgical treatment. Specialists contend that both ob/gyn providers and interventional radiologists should intensify efforts to educate women with the condition…
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July 1, 2008 Diagnostic Imaging. Even low-ratio compression changes what readers see John C. Hayes -------------------------------------------------------------------------------- Changes in images introduced by compression algorithms at levels as low as 8:1 can be observed by readers when they are compared with uncompressed images, according to a research report presented at the SIIM conference. Researchers were unable to say what impact compression has on diagnosis, however, as the study did…
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July 1, 2008 Diagnostic Imaging. Endovascular embolization curtails GI hemorrhages -------------------------------------------------------------------------------- A group of surgeons and radiologists in the U.S. and Greece says transarterial embolization is effective to treat upper gastrointestinal tract bleeding. The catch? It's risky and recommended only for patients who are not good candidates for surgery. Dr. George Poultsides and colleagues at the University of Connecticut and the…
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July 1, 2008 Diagnostic Imaging. Endorectal MRI foretells prostate cancer prognosis -------------------------------------------------------------------------------- Researchers have found that endorectal MRI can accurately predict recurrence and development of metastatic disease in patients about to undergo radiation therapy for prostate cancer. Study findings suggest a stronger management role for MRI. Dr. Fergus V. Coakley, a professor of radiology and urology at the University of California,…
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July 1, 2008 Diagnostic Imaging. Emerging options compete with mammography By Shalmali Pal ------------------------------------------------------------------------------- It is a safe bet that conventional mammography will give way to 3D imaging and other advanced technologies in the not-too-distant future. The gamble lies in picking which technology will emerge the clear winner as the primary screening tool for breast cancer: digital breast tomosynthesis or dedicated breast CT. Digital breast…
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July 1, 2008 Diagnostic Imaging. -------------------------------------------------------------------------------- July 2008 COVER STORY By: John C. Hayes Mid-year Clinical Update: Imaging thrives by making connections Clinical evidence secures reprieve for coronary CTA Emerging options compete with mammography Functional MRI measures effects of liver treatment Available scanners tackle future CTC screening demand CAD gains ground in climb to routine clinical application Fibroid patients still…
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