TINA M LEFEBVRE
Radiology in Woonsocket, RI

5657369, Aug 12, 1997

Apr 25, 1995

8/428044

Jay A. Stein - Framingham MA
Steven Teta - Billerica MA
Richard E. Cabral - Tewksbury MA
Tracy L. Ramsdell - Amherst NH
Tina LeFebvre - Woonsocket RI
Russell J. Gershman - Middleborough MA

Hologic, Inc. - Waltham MA

H05G 100

378208

An x-ray bone densitometry system having an apparatus for positioning body parts is provided. The system includes a patient table having a length extending along a Y-axis and a width extending along an X-axis, a C-arm supporting an x-ray source at one side and an x-ray detector at an opposite side of the table, wherein the source and detector are aligned along a source-detector axis which is transverse to the Y-axis. The source is selectively energized and emits a fan beam of x-rays which conforms to a beam plane which is transverse to the Y-axis and contains the source-detector axis. A forearm positioner is removably supported on the table and includes an arm rest portion positioned at a selected distance along the X-axis from an edge of the table. A hand supporting member is configured to fit within the arm rest portion to maintain the position of a patient's hand in a predetermined shape when the source is energized.

5835562, Nov 10, 1998

Jun 7, 1995

8/475404

Tracy L. Ramsdell - Amherst NH
Tina LeFebvre - Woonsocket RI

Hologic, Inc. - Waltham MA

A61B 608

378206

A medical radiological apparatus, such as an x-ray bone densitometry apparatus includes patient positioning aides for accurate patient placement and consistent positioning during a single scanning procedure, or during subsequent procedures. An optical crosshair device helps align the patient's spine along the Y-axis of the apparatus and the patient's hips along the X-axis of the apparatus, perpendicular to the spine. Spinal and forearm positioning aides help the patient maintain consistent, comfortable positions within scans. They also enable reproducibility of patient position in subsequent scans, so that scan results from one scan to another may be compared by a medical practitioner, with reasonable assurance that the respective scan results are not unduly compromised by inconsistent patient placement. The forearm positioning aide consistently places the forearm flat on the patient support table in a proper position parallel to the longitudinal table axis. The spinal positioning aide has diverging support wings which enable the patient to maintain elbows in a position off the table, in a manner which is not likely to cause spinal movement due to arm fatigue.

6009147, Dec 28, 1999

Nov 25, 1994

8/345069

Jay A. Stein - Framingham MA
Steven Teta - Billerica MA
Donald Barry - Norwood MA
Richard E. Cabral - Tewksbury MA
Tracy L. Ramsdell - Amherst NH
Tina LeFebvre - Woonsocket RI
Noah Berger - Waltham MA
Tom Richardson - Winchester MA
Eric von Stetten - Sudbury MA
Howard P. Weiss - Newton MA
Thomas L. Kelly - Groveland MA
Russell J. Gershman - Middleborough MA

Hologic, Inc. - Waltham MA

G21K 510

378196

A method of calibrating an ultrasound bone analysis apparatus having a pair of transducer assemblies. Each transducer assembly has a transducer and a coupling pad, and is movable relative to the other so that a face of each pad can be moved to a position in which they mutually contact and to a position where the faces contact body parts. The method according to the present application includes transmitting an ultrasound signal from one transducer and receiving a signal corresponding to the transmitted ultrasound signal through the other transducer when the transducer assemblies are in the first position and the second position. A time for the ultrasound signal to pass through the body part is determined, and a width of the body part based on positions of the transducers is determined. Then, using the time and width values a speed of sound of the ultrasound signal passing through the body part with squish compensation is calculated.