RSNA

The RSNA will underscore the unique achievements of Japanese imaging researchers in “Japan Presents,” a presentation of seven scientific papers focusing on diagnostic radiology. On Monday, Dec. 1, each paper will be introduced with the Japanese spin on ideas and concepts.

There is nothing like a little momentum to help the RSNA organizers present the latest developments in imaging research in the meeting’s scientific sessions. Everyone associated with imaging sciences from Beijing to New York City understands that presenting research in Chicago is an essential requirement for membership in this unique community.

Computer-aided detection significantly improves the sensitivity of pulmonary embolism imaging, according to a study that will be presented at the 2008 RSNA meeting. Other studies show that specially developed CAD schemes can detect flat lesions that are often missed in CT colonography.

Unfettered by wires or workstations, radiologists stroll through the hospital, viewing medical images and signing off on reports. But physical limitations and security issues still pose hurdles to large-scale implementation of wireless solutions.

Medison America spotlights the Accuvix V10 this week at the RSNA meeting. The ultrasound scanner, which appeared last year as a work-in-progress, cleared the FDA in spring. It supports 3D/4D imaging, as well as spectral, color, and power Doppler.

The palm-sized Acuson P10 ultrasound scanner appears this week as a commercial product from Siemens Medical Solutions along with the laptop-based Acuson P50. The P50 is designed for mobile environments but is outfitted with diagnostic-level capabilities, including high-quality gray-scale as well as color and Doppler imaging. Its primary applications will be in cardiology and vascular imaging.

Radiologists who wonder why diagnostic imaging has been targeted for utilization constraints need only examine the Medicare B experience from 2000 to 2005. Medicare payments for outpatient medical imaging rose 93% during that period from $6 billion to more than $11 billion. The increase reflected a shift in preference to high-cost, high-tech modalities, especially CT and MR. Utilization among cardiologists exploded.

In what is possibly the largest study in its kind, Harvard University researchers have shown that PET/CT can reliably tell whether unsuspected adrenal lesions discovered while managing oncologic patients are benign or malignant.

Toshiba showcases Titan

Vantage Titan, a wide-bore 1.5T scanner, highlights MR offerings from Toshiba America Medical Systems at the RSNA meeting this week. The work-in-progress features a bore 18% wider than any 1.5T scanner currently on the market, according to the company. A specially designed gradient system offers an amplitude of 30 and a slew rate of 130 to expand the field-of-view.

Toshiba America Medical Systems upgraded its Xario XG and Aplio ultrasound sytems with three transducers, each capable of volumetric scanning. The additions expand the range of these systems, which previously had depended on only one transducer for 4D imaging. The transducers can be applied to transvaginal/obstetric, prostate, small parts including breast, testes, and thyroid, and abdominal scanning.

Radiologists must become more alert to the extensive range of health problems faced by patients who swallow fish bones, according to a thought-provoking poster from Spain that was one of eight international exhibits to scoop a prestigious Magna Cum Laude award in the vast RSNA 2007 poster hall on Wednesday afternoon.

Inspired by vertebroplasty's success, Greek researchers have shown that percutaneous cement injections can also successfully stabilize arthritic and neoplastic lesions affecting the femoral head. The technique offers pain relief and an alternative to surgery in selected patients.

Merge Healthcare has become the first U.S. RIS/PACS company to enter the fast-growing teleradiology market, offering a service that gives U.S.-based radiologists consultation interpretations provided by radiologists based in India.

Two new computed radiography systems and a digital radiography unit debut this week at the Caresteam Health booth at the RSNA meeting. The CRs, dubbed the Classic and Elite, are accompanied by IT products already introduced:

Information ttechnology is keeping tabs on referring doctors’ inappropriate study orders and could be useful in automatically tracking imaging follow-up to ensure radiologists’ advice is heeded, according to presentations at an informatics session on Wednesday.

Computer-aided detection figures prominently in the Siemens Medical Systems booth at this year’s RSNA meeting. The company is featuring packages for colon cancer, pulmonary embolism, and lung nodules in several work-in-progress versions.

GE updates Signa platform

The latest evolution of GE Healthcare's Signa HD x (high definition x) platform offers MR pulse sequences that overcome barriers to diagnostic scans in some difficult-to-image patients. The xt version, shown at the RSNA meeting, features two major innovations: 3D Cube and Ideal.

The hierarchy of ultrasound systems at Hitachi Medical Systems America has a new flagship. Particularly noteworthy on the HI Vision 900 is an elastographic capability that characterizes pathologies based on ultrasonic measurements of the relative stiffness of tissue.

The S-2000 ultrasound scanner, takes shape this week as a new commercial product at the high end of the Siemens Medical Systems’ ultrasound portfolio. The S-2000, cleared by the FDA in mid-October, does not replace the Sequoia, Siemens’ flagship since it acquired ultrasound pioneer Acuson six years ago. Instead, it complements the system, according to Siemens executives, by combining best-of-breed technologies from Sequoia with Siemens’ ultrasound platforms developed prior to the Acuson acquisition.

Nearly all lung nodules were segmented successfully with a point-and-click approach from four out of five vendor programs. Even with this approach, however, intraobserver 3D volumetric measurement agreement was close to but not 100% repeatable.