BONE DENSITY REGISTRY
COMPREHENSIVE QUESTIONS AND
SOLUTIONS GRADED A+
◉ AP Spine
Answer: -The first scan of a DXA exam
-Takes 10 minutes
◉ Automatic Exposure Control (AEC)
Answer: -Made of a set of xray detectors located behind the
patient.
-Measure the radiation incident
◉ BMD
Answer: Calculated by
-Expected BMD + (Z-score x SD)
-BMC of the ROI/Volume of ROI
◉ Processes of L-Spine
Answer: There are 7
-1 Spinous
-2 Superior Articular Facets
-2 Inferior Articular Facets
,-2 Transverse
◉ Abnormal Forearm Scan
Answer: -T-score of -1 - -2.5
-DXA of hip or spine should be ordered
◉ Between 90 and 110 degrees
Answer: Position of the Elbow for a Forearm Scan
◉ Trochlear Notch
Answer: Semilunar Notch
◉ Area Examined for Proximal Femur
Answer: 2-3cm above and 3-4cm below Greater Trochanter
◉ Neck Block
Answer: If placed to high, there will be poor femoral head outline
◉ Sandbag
Answer: Can be used to stablize the femur thats not being scanned
◉ Red Blood Cells
Answer: 2.6 million are produced by bone marrow each second
, ◉ Radius
Answer: -Long and curved
-Is analyzed and reported on
-Connects to biceps, flexor digitorum superficialis, flexor pollicis
longus muscles, supinator, extensor ossis matecarpi pollicis,
extensor primi internodii pollicis
◉ DXA Manufacturers
Answer: Cooper Norland, GE Lunar, Hologic
◉ T-Score
Answer: used for people over 50
◉ Normal Signs of aging
Answer: Includes a reduction in size of the liver, reduced enzyme
activity and cholesterol synthesis, and a decrease in bile duct
storage
◉ The Association of American Physicians and Surgeons
Answer: Implemented a set of patient rights in 1995
◉ Femoral Neck Angle
Answer: -Normally 125 degrees
COMPREHENSIVE QUESTIONS AND
SOLUTIONS GRADED A+
◉ AP Spine
Answer: -The first scan of a DXA exam
-Takes 10 minutes
◉ Automatic Exposure Control (AEC)
Answer: -Made of a set of xray detectors located behind the
patient.
-Measure the radiation incident
◉ BMD
Answer: Calculated by
-Expected BMD + (Z-score x SD)
-BMC of the ROI/Volume of ROI
◉ Processes of L-Spine
Answer: There are 7
-1 Spinous
-2 Superior Articular Facets
-2 Inferior Articular Facets
,-2 Transverse
◉ Abnormal Forearm Scan
Answer: -T-score of -1 - -2.5
-DXA of hip or spine should be ordered
◉ Between 90 and 110 degrees
Answer: Position of the Elbow for a Forearm Scan
◉ Trochlear Notch
Answer: Semilunar Notch
◉ Area Examined for Proximal Femur
Answer: 2-3cm above and 3-4cm below Greater Trochanter
◉ Neck Block
Answer: If placed to high, there will be poor femoral head outline
◉ Sandbag
Answer: Can be used to stablize the femur thats not being scanned
◉ Red Blood Cells
Answer: 2.6 million are produced by bone marrow each second
, ◉ Radius
Answer: -Long and curved
-Is analyzed and reported on
-Connects to biceps, flexor digitorum superficialis, flexor pollicis
longus muscles, supinator, extensor ossis matecarpi pollicis,
extensor primi internodii pollicis
◉ DXA Manufacturers
Answer: Cooper Norland, GE Lunar, Hologic
◉ T-Score
Answer: used for people over 50
◉ Normal Signs of aging
Answer: Includes a reduction in size of the liver, reduced enzyme
activity and cholesterol synthesis, and a decrease in bile duct
storage
◉ The Association of American Physicians and Surgeons
Answer: Implemented a set of patient rights in 1995
◉ Femoral Neck Angle
Answer: -Normally 125 degrees
