Seminars in Nuclear Medicine
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There is an important and strong, but complex influence of the tumor microenvironment on tumor cells’ phenotype, aggressiveness and treatment sensitivity. One of the most frequent and best studied aspects of the tumor microenvironment is hypoxia. Low oxygen tension often occurs in tumo...
Hypoxia is present to some extent in most solid malignant human cancers because of an imbalance between the limited oxygen delivery capacity of the abnormal vasculature and the high oxygen consumption of tumor cells. This drives a complex and dynamic compensatory response to enable con...
Hypoxia is prevalent in many solid tumors. Hypoxic tumors tend to exhibit rapid growth and aberrant vasculature, which lead to oxygen (O2) depletion and impaired drug delivery. The reductive environment in hypoxic tumors alters cellular metabolism, which can trigger transcriptional res...
Imaging of hypoxia is important in many diseases states in oncology, cardiology, and neurology. The radiopharmaceutical, copper-labeled diacetyl-bis(N-methylthiosemicarbazone), has been used to assess hypoxia in many studies. In particular, copper-labeled diacetyl-bis(N-methylthiosemic...
Bone scintigraphy has remained a mainstay of clinical nuclear medicine for over 4 decades. An extensive medical literature has developed surrounding the etiology and significance of alterations in distribution of bone radiopharmaceuticals. Altered biodistribution may be of a global nat...
Bone metastases are associated with increased morbidity and poor prognosis in castration-resistant prostate cancer. Since 2010, 5 systemic therapies for metastatic castration-resistant prostate cancer have been approved by the US Food and Drug Administration based on an improvement in ...
Seminars in Nuclear Medicine (2015)
This article discusses issues regarding administration of radiopharmaceuticals to pregnant women or nursing mothers. Uncertainties in calculated dose estimates and possible biological effects on the unborn child are presented. Models and dose estimates for pregnant women at several sta...