AJR. American journal of roentgenology
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AJR Am J Roentgenol · Dec 2013
ReviewSomatostatin receptor-based PET/CT of intracranial tumors: a potential area of application for 68 Ga-DOTA peptides?
Similar to neuroendocrine tumors (NETs) at other sites, a wide array of intracranial tumors also express somatostatin receptors (SSTRs). This expression can be exploited for both imaging and therapy. The introduction of (68)Ga-labeled tetraazacyclododecanetetraacetic acid (DOTA)-peptide PET/CT has given new dimension to SSTR-based imaging because of its improved sensitivity and excellent spatial resolution. ⋯ However, in contrast to gastropancreatic and bronchopulmonary NETs, limited literature is available regarding the use of (68)Ga-DOTA-peptide PET/CT in intracranial tumors. Here, we briefly review the available literature and highlight the potential role that (68)Ga-DOTA-peptide PET/CT can play in the management of intracranial tumors.
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AJR Am J Roentgenol · Dec 2013
ReviewDiagnostic imaging of fetal and pediatric orbital abnormalities.
The orbit contains structures from which a wide spectrum of disease can arise. This article focuses on orbital anatomy and a simple compartmental approach to evaluating the orbit on diagnostic imaging. The characteristic findings of key fetal structural diseases and a wide spectrum of pediatric orbital disorders, including inflammatory disorders and developmental lesions, and the differential diagnosis of benign versus malignant masses will be discussed. ⋯ Orbital abnormalities in fetuses may be recognized using ultrasound and MRI. Anophthalmia, hypertelorism, and hypotelorism either may be part of a genetic syndrome or may be related to a developmental abnormality of the fetal skull. In the pediatric population, cross-sectional imaging with CT and MRI offers a means to assess which compartments of the orbit are affected. Aggressive masses have characteristic features and must be evaluated for intracranial extension.
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AJR Am J Roentgenol · Oct 2013
ReviewImaging of blunt vascular neck injuries: a clinical perspective.
We will review the common injuries and anatomic distributions of blunt cerebrovascular injuries (BCVIs) of the neck, explain the grading criteria, and discuss the corresponding management. Artifacts associated with BCVI on CT will also be examined. ⋯ Identifying common injury patterns and anatomic distributions associated with BCVI can help decide the grade and management earlier and reduce the risk for potential complications. Recognizing the common artifacts associated with BCVI helps the reader successfully recognize a true BCVI.
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AJR Am J Roentgenol · Oct 2013
ReviewImaging of blunt vascular neck injuries: a review of screening and imaging modalities.
We will review the epidemiology of blunt cerebrovascular injuries (BCVIs) and the rationale for screening. Current imaging modalities used to screen for BCVIs will be discussed with an emphasis on CT angiography. ⋯ Screening for BCVIs can decrease rates of postinjury complications, such as stroke. The use of standardized screening criteria and the appropriate imaging modalities can allow early detection of BCVIs and effective intervention.