Prostate Cancer-PET Imaging Update.

Prostate cancer is the most common non-dermatologic cancer in men, and one of the leading causes of cancer-related mortality. The incidence of prostate cancer increases precipitously after the age of 65 and demonstrates variable aggressiveness, depending on its grade and stage at diagnosis. Despite recent advancements in prostate cancer treatment, recurrence is seen in 25% of patients. Advancements in prostate cancer Positron Emission Tomography (PET) molecular imaging and recent United States Food and Drug Administration (FDA) approvals have led to several new options for evaluating prostate cancer. This manuscript will review the commonly used molecular imaging agents, with an emphasis on Fluorine-18 fluciclovine (Axumin) and PSMA-ligand agents, including their protocols, imaging interpretation, and pitfalls.

Imaging of acute gastric emergencies: a case-based review.

The stomach is one of the most frequently imaged organs in the body with dedicated and incidental inclusion in chest imaging modalities. Gastric emergencies often present clinically with non-specific abdominal, nausea, and vomiting. As such, imaging plays a critical role in early identification and treatment of a myriad of gastric emergencies. The goal of this paper is to showcase gastric emergencies as they appear on multimodality imaging.

Pathogenesis And Radiological Findings In Rare Case Of Salter Harris Type I Distal Tibial Fracture With Associated Osteonecrosis In The Paediatric Population.

Salter-Harris type I fractures of the distal tibia are commonly seen in paediatrics and management of such fractures follows an algorithm established in the literature. Despite this, osteonecrosis of the distal tibia can subsequently develop. Osteonecrosis or avascular necrosis is cell death that occurs secondary to trauma, metabolic disturbances, sickle cell disease, or medication side effect. It most frequently affects the femur, talus, or humerus, and rarely the tibia. Radiographs and MRI are pivotal in making a timely diagnosis in order to minimize patient discomfort. To the best of our knowledge, there has only been one previous documented case of osteonecrosis following a Salter Harris Type I distal tibial fracture. Here, we present the second such case.

Clinical Significance of T2*gradient-recalled Echo/susceptibility-weighted Imaging Sequences in Evaluating Superficial Siderosis in the Setting of Intracerebral Tumors: Pilocytic Astrocytoma.

Superficial siderosis is the slow accumulation of hemosiderin on the pial surfaces of the brain and spinal cord. The most common cause of intracranial superficial siderosis is secondary to subarachnoid hemorrhage. Rarely, superficial siderosis can also be caused by tumors. Superficial siderosis presents clinically as hearing loss and gait instability that progressively worsen. The diagnosis is primarily made by magnetic resonance imaging; however, susceptibility-weighted imaging (SWI) and T2* gradient echo (GRE) sequences demonstrate the highest sensitivity in detecting this condition. To the best of our knowledge, there has been only one previous case of superficial siderosis secondary to a pilocytic astrocytoma of the spine. However, we present a case of intracerebral pilocytic astrocytoma resulting in superficial siderosis, with emphasis on acquisition and use of T2*GRE/SWI sequences.