Key points Definition: Orbital exenteration (OE) is a radical surgical procedure involving removal of the entire orbital contents and periorbital structures. It is usually performed to treat primary orbital or periorbital malignancies that invade the orbit. Classic clue: A middle-aged…
Key points Definition: Blowout orbital floor fractures (BOFFs) result from direct trauma to the orbit transmitting force to the globe. This causes the orbital contents to “blow out” through the path of least resistance, usually the paper-thin lamina papyracea or…
Key points Definition: Medial blowout fractures (MBOFs) result from direct trauma to the orbit transmitting most of the force to the globe. This causes the orbital contents to “blow out” through the path of least resistance, usually the paper-thin lamina…
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This chapter reinforces concepts presented in this textbook. Students of medicine gather pearls of wisdom from their mentors that may not fit well into a didactic treatment of a subject but are valuable in day-to-day practice. We all learn to…
A number of noninvasive cardiac diagnostic imaging studies are available to the cardiologist, which include echocardiography, computed tomography (CT), CT angiography, and magnetic resonance imaging. The continuing value of cardiac nuclear scintigraphic studies is that they are noninvasive, contrast media…
Infection imaging has long been an important indication for scintigraphy. Gallium-67 citrate (Ga-67) was the first infection-seeking radiopharmaceutical used clinically. It is still in use today, however, in a much more limited role than in the past. For decades now,…
Molecular imaging examinations using positron emission tomography (PET) and single-photon emission computed tomography (SPECT) are frequently used in the brain because they can complement the anatomical information from magnetic resonance (MR) imaging and computed tomography (CT). By examining cellular function,…
This chapter reviews tumor scintigraphy using radiopharmaceuticals other than F-18 fluorodeoxyglucose (FDG), as well as therapeutic radiopharmaceuticals for specific malignancies ( Box 13.1 ). Theranostics is a topic of increasing importance as it relates to nuclear oncology. The term refers…