Study of Ultrasound Doppler Spectra Statistics Signal to    Noise Ratio &amp; Pressure
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
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This research has developed a very important and novel means of                 measuring blood flow.  In a conventional Doppler flow measurement, the          sensor and transmitter, which produces the ultrasound waves in the              blood, must be positioned such that the sensors and blood flow must be          nearly parallel.  It is known that for angles close to 90 degrees, a            small error in the angle leads to a large error in the flow estimate.           However, this problem is resolved if one uses the method proposed here          namely a "spectrum band-width" to estimate frequency.  This technique of        using spectrum band-width for velocity estimates opens up the previously        inaccessible range of angles which are nearly perpendicular to the flow         of blood.  Placement of the sensor directly on the blood vesicle without        having to bend the vesicle will greatly increase the utility and                convenience of the measurement.
{'FirstName': 'Vernon', 'LastName': 'Newhouse', 'PI_MID_INIT': 'L', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Vernon L Newhouse', 'EmailAddress': None, 'NSF_ID': '000198250', 'StartDate': '10/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Drexel University', 'CityName': 'PHILADELPHIA', 'ZipCode': '191042875', 'PhoneNumber': '2158956342', 'StreetAddress': '3141 CHESTNUT ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Pennsylvania', 'StateCode': 'PA', 'CONGRESSDISTRICT': '03', 'CONGRESS_DISTRICT_ORG': 'PA03', 'ORG_UEI_NUM': 'XF3XM9642N96', 'ORG_LGL_BUS_NAME': 'DREXEL UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '1495', 'Text': 'COMPUTATIONAL ENGINEERING'}, {'Code': '5345', 'Text': 'Engineering of Biomed Systems'}, {'Code': '9120', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
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