Monday, November 30, 2009

Peak Filling and Ejection Rates

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Peak filling rate (PFR) is measured during diastole in a MuGA ( Mu ltiple G ated A cquisition) study. The raw PFR is determined from the cu...
Sunday, November 29, 2009

Deep Lateral Femoral Notch Sign

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The deep lateral femoral notch sign suggests an impacted osteochondral fracture of the lateral femoral condyle, and may be seen with an ante...
Saturday, November 28, 2009

Extensor Digitorum Brevis Avulsion

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The extensor digitorum brevis is the only muscle that originates on the dorsum of the foot. Its tendons insert into the proximal phalange...
Friday, November 27, 2009

Pitfalls in DXA

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DXA may be falsely elevated due to the following factors: Aortic calcifications Scoliosis Osteoarthritic changes Compression fractures ...
Thursday, November 26, 2009

Time to Visualization of Fractures on Bone Scan

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Virtually all fractures (except skull fractures) will show increased activity on bone scan by 2 weeks. Occult hip fractures in elderly patie...
Wednesday, November 25, 2009

Differential Diagnosis of a "Super Scan" Appearance on Bone Scan

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Super scan (superscan) refers to the diffuse skeletal uptake of MDP with resultant low or absent activity in the kidneys and bladder and hi...
Tuesday, November 24, 2009

Lymphoscintigraphy for Lymphedema

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74-296 MBq of 99m Tc with filtered (smaller than 22 microns) sulfur colloid particles suspended in 0.10 mL of saline is injected into the do...