What is Tc-99m bone scan?
What is Tc-99m bone scan?
Bone scintigraphy (a.k.a. bone scans) are a nuclear medicine (scintigraphic) study that makes use of technetium-99m (commonly Tc-99m-methylene diphosphonate (MDP)) as the active agent. The study has three phases which follow intravenous injection of the tracer. Sometimes a fourth (delayed/delayed) phase is performed.
How is condylar hyperplasia diagnosed?
Primarily nuclear imaging techniques such as single-photon emission computed tomography (SPECT), positron emission tomography (PET), and bone scintigraphy are taken along with other data before a patient is diagnosed for Condylar Hyperplasia.
What is condylar hyperplasia?
Condylar hyperplasia (CH) is a bone disease characterized by the increased development of one mandibular condyle. It regularly presents as an active growth with facial asymmetry generally without pain. Statistically it affects more women in adolescence, although it does not discriminate by age or gender.
What does a scintigraphy show?
Skeletal scintigraphy is a special type of nuclear medicine procedure that uses small amounts of radioactive material to diagnose and assess the severity of a variety of bone diseases and conditions, including fractures, infection, and cancer.
How is condylar hyperplasia treated?
Treatment usually includes condylectomy during the period of active growth. If growth has stopped, orthodontics and surgical mandibular repositioning are indicated. If the height of the mandibular body is greatly increased, facial symmetry can be further improved by reducing the inferior border of the mandible.
Can condylar hyperplasia be fixed?
To correct condylar hyperplasia, it is necessary to consider its status. In the inactive status, conventional orthognathic surgery can be recommended without condylectomy. However, in the active status, active growth potential of the affected condyle should be removed.
What is Interpositional arthroplasty?
A first MTP joint interposition arthroplasty is a surgical procedure to treat arthritis of the big toe. The treatment can stop pain at the base of the big toe by preventing the surfaces of the bones from rubbing together. It also can preserve some motion in the big toe.
What radioisotope is used for bone scans?
Nuclear scintigraphy of the bone commonly utilizes the radionuclides technetium-99m (Tc-99m) or fluoride-18 (F-18).
Is scintigraphy a bone scan?
Skeletal scintigraphy helps to diagnose and evaluate a variety of bone diseases and conditions using small amounts of radioactive materials called radiotracers that are injected into the bloodstream.
How is a bone scan used to diagnose mandibular condylar hyperplasia?
Mandibular condylar hyperplasia (CH) is a complex developmental deformity resulting in asymmetries of the hyperplastic condyle. Bone scan SPECT is a sensitive and accurate method of detecting the growth activity of this disorder. This method can be used to quantitate the radionuclide uptake differences between the left and right condyles.
What kind of bone disease is condylar hyperplasia?
Condylar hyperplasia (CH) is a bone disease characterized by the increased development of one mandibular condyle. It regularly presents as an active growth with facial asymmetry generally without pain.
What does excessive unilateral condylar growth ( ch ) mean?
Excessive unilateral condylar growth is a well-known phenomenon that has been previously described [1]. Condylar hyperplasia (CH) can be defined as the excessive growth of one condyle over the contralateral, causing an increase in bone mass of varying degree in instances where the subject’s growth has decreased or ceased [2].
What are SPECT and CT images of mandibular condyles?
Coronal fusion image of SPECT and CT shows asymmetric uptake in bilateral mandibular condyles with increased uptake on right side compared with left side.
