nosing cancer using MRI technology, Degani emphasizes that the 3TP tcdinique is the only one that provides an accurate, standardized system that any clinician can easily use. The speed with which results can be obtained and the prevention of im-necessary biopsies will make it cost-effective as well. The procedure is likely to be used in the future to diagnose a variety of cancers and, while it is moving from the trial stages to clinical use on breast and prostate, research is starting on the lungs. In addition, more research will be done on using 3TP scanning
to track the response of tumors to anti-cancer therapies.
The method will be distributed by a U.S. company called 3TP LLC. It was foimded to market the technology, for which it received worldwide rights through Yeda, the commercial arm of the Weizmann Institute. Because 3TP is non-invasive and is based on existing MRI technology, the FDA clearing process was shorter than expected. Now the company is seeking clearance in Canada and Europe. □
- Courtesy oftlie Weizmann Institute of Science
HU's earthquake search
Researchers examine two caves west of the Dead Sea.
Jentsalem
Anew method for dating destructive past earthquakes, based on evidence remaining in caves, has been developed by scientists at the Hebrew University of Jerusalem and the Geological Survey of Israel. Using this method, they discovered for the first time evidence of earthquakes that can be documented some distance from the Syrian-African rifl that nms from Syria through Lebanon, Israel and Jordan and down into Africa. This rift caused great shifts in the topography of the region in prehistoric times.
An article on this subject was published this month in the journal Geology. It is based on work carried out by graduate student Elisa J. Kagan of the Institute of Earth Sciences at the Hebrew University and on a report issued by the Geological Survey of Israel, a government research body.
Stalactite caves retain a record of environmental conditions, in-duding climate and the seepage of water through cracks in the earth.
The researchers.................. ..................
examined the sta- BHI^PWBi W^'^^ 7*
lactite cave near Beit Shemesh and another nearby cave, which are located about 40 kilometres west of the Dead Sea. The Dead Sea itself is part of the Syrian-African rift.
Researchers estimate that there were at least 13 earthquakes of a magnitude of 7.5 or greater on the Riditcr scale that occurred in the region in the last 200,000 years. However, in the two caves that were examined, there was no evidence of an earthquake of such magnitude in the last 4,000 years. The scientists suggest, therefore, that the prehistoric earthquakes that hit the region during the time of the great Syrian-African rift upheavals were of greater magnitude than those recorded later.
Together with her advisor. Prof. Amotz Agnon of the Institute of Earth Sciences, Kagan further noted the patterns of fallen stalactites and stalagmites in the caves and foimd that they had fallen primarily in the direction of north to south and east to west. The researchers showed through calculations that these patterns were caused by extremely large earthquakes that originated in the Dead Sea region.
In her research, Kagan examined these stalactites and stalagmites upon which new stalagmites had grown, indicating passage of many thousands of years. In the dating of this material, she was guided by Dr. Miryam Bar-Matthews and Dr. Avner Ayalon of the Geological Survey of Israel.
The scientists are continuing their investigative work in the caves in connection with Kagan's doctoral researdi. □
- Courtesy of Hebrew University of Jerusalem
In the stalactite cave near Beit Shemesh, there Is a collapsed ceiling, evidence of an ancient earthquake.
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