Ultrasound

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The ECR hosted the unveiling of Philips’ latest high-performance ultrasound system, the HD (High Definition) 11. The company launched the system commercially in mid-February as a state-of-the-art alternative for budget-strapped healthcare facilities.

While exploration of Mars and Saturn accounts for most of the news from outer space these days, astronauts aboard the International Space Station have quietly published the results of a shoulder ultrasound exam performed in zero gravity.

Chronic pot smokers may experience problems with thinking or remembering even after abstaining, and decreased cerebral blood flow may be the cause, according to researchers at the National Institute on Drug Abuse.

Italian imaging systems manufacturer Esaote is planning a radical change in the way its ultrasound scanners handle acoustic information. The Genoa-headquartered company, part of the Bracco group, is preparing to swap a high-tech silicon-based transducer for its conventional ceramic-based technology. The move, scheduled to start in spring 2006, could make Esaote the first ultrasound manufacturer to abandon the decades-old method of converting acoustic waves into images with piezoelectric crystals.

The HD11 ultrasound system launched worldwide in mid-February by Philips Medical Systems offers a state-of-the-art alternative for budget-strapped healthcare facilities. The company is targeting customers who have been holding off on the purchase of sonography systems for five to seven years or settling for remanufactured platforms from third-party dealers.

CT is moving beyond detection and quantification of coronary artery calcium to grading of coronary stenoses, identifying not only vulnerable plaques but, more important, vulnerable patients. Yet its ultimate role in predicting risk of cardiac events remains unclear.

A high-resolution ultrasound-based portable device will help physicians calculate bone loss in space travelers, according to researchers at NASA’s National Space Biomedical Research Institute. While focused on space-related health issues, NSBRI findings may translate into help for earth-bound patients with similar conditions.

Business Briefs

VitalWorks changes name, completes medical division saleIT developer VitalWorks has completed the sale of its medical division to Cerner for $100 million in cash. The company announced Nov. 15 a definitive agreement to sell the division, following its decision to focus on radiology IT systems. With the deal now finished, the company has changed its name to Amicas and moved its headquarters to the Boston digs of this PACS vendor, which VitalWorks acquired in late 2003.

Ultrasound is incomparable in its niche as a safe, cost-effective, and portable imaging technique. Nevertheless, standard 2D ultrasound suffers because its display of anatomy lacks reproducibility and precision. Unlike CT and MR, which produce uniform sequential pictures of the anatomy wherever and whenever they are done, ultrasound examinations differ from clinic to clinic, operator to operator.

In a major breakthrough, researchers in Austria have developed an ultrasound-guided technique to repair the urinary tract of patients with urinary incontinence by injecting stem cells harvested from the patient's own body. They found that almost every patient had been cured one year after the stem cell treatment.

If ever I undergo an imaging examination of my hands and wrists, the radiologist will need to know that increased fluid in my second and fifth flexor sheaths is probably quite normal because I am a regular typist.

Three- and four-dimensional ultrasound systems have generated stunning pictures, especially of the fetal face, and proffered the tantalizing prospect of offline image reconstruction. Early systems got a lukewarm reception, largely because they lacked wide clinical application, flexibility in image processing, and productivity-conscious tools. But volumetric ultrasound displayed at the RSNA meeting demonstrated the maturation of the technology with new systems for routine general radiology and for imaging complex anatomy and pathology, as well as postprocessing enhancements for presenting and evaluating data in multiple planes and user-friendly, push-button data interrogation.

Although still in research stages, freehand 3D ultrasound shows promise in guiding surgery and radiotherapy in the clinical setting, according to researchers at the University of Cambridge in the U.K.

Patients with uterine fibroids have a new treatment option, which uses MR to guide a high-power ultrasound beam that heats and destroys fibroid tumors. The ExAblate 2000 technology was approved by the FDA in October and showcased at the 2004 RSNA meeting.

As radiation therapy develops more sophisticated targeting, researchers are turning to new imaging methods to direct it. Fused scintigraphy and CT images and daily ultrasound scanning both show promise as tools to concentrate intensity-modulated radiation therapy (IMRT) and spare surrounding healthy tissue.

Focused ultrasound can cook a lot more than uterine fibroids. The ablation technique is also safe and effective treating large hepatocellular carcinomas, according to papers presented Wednesday.

Ultrasound-guided therapy using adult stem cells could expand the modality’s role in the diagnosis and management of urethral and bladder conditions. New applications include endoluminal probes, Doppler technology, and 3D imaging capabilities, according to papers presented at the RSNA meeting Sunday.

Cedara Software is developing a computer-assisted detection system for breast ultrasound. The software, announced as a work-in-progress at the RSNA meeting, is intended to identify the sonographic characteristics of benign as well as malignant breast masses and to classify the extent of malignancy for specific nodules.