Feasibility of half the recommended dose of IV contrast in DECT: image quality evaluation and diagnostic acceptability in cancer patients.

Purpose: To assess the quality of dual-energy computed tomography (DECT) images in patients receiving 50% of the recommended weight-based volume of iodinated intravenous contrast medium.

Methods: The study included cancer patients who previously underwent abdominal CT on a DECT scanner using a single source with the full recommended weight-based dose of Iohexol 350. Using the same scanner, the patients underwent a portovenous phase DECT scan following intravenous injection of half of the recommended weight-based dose.

Role of portable ultrasound during a short-term medical service trip to rural Guatemala: a collaborative mission of trainees and physicians.

Introduction: Access to health care in developing countries is scarce. One solution to this problem has been for doctors from the USA to provide single-visit care through short-term medical service trips. There is interest in using ultrasound imaging as a portable diagnostic tool; however, data describing its usefulness are scarce.

New frontiers in imaging including radiomics updates for pancreatic neuroendocrine neoplasms.

Objective: To illustrate the applications of various imaging tools including conventional MDCT, MRI including DWI, CT & MRI radiomics, FDG & DOTATATE PET-CT for diagnosis, staging, grading, prognostication, treatment planning and assessing treatment response in cases of pancreatic neuroendocrine neoplasms (PNENs).

Background: Gastroenteropancreatic neuroendocrine neoplasms (GEP NENs) are very diverse clinically & biologically. Their treatment and prognosis depend on staging and primary site, as well as histological grading, the importance of which is also reflected in the recently updated WHO classification of GEP NENs.

Data from a terminated study on iron oxide nanoparticle magnetic resonance imaging for head and neck tumors.

Node positive head and neck squamous cell carcinomas (HNSCCs) patients exhibit worse outcomes in terms of regional neck control, risk for distant metastases and overall survival. Smaller non-palpable lymph nodes may be inflammatory or may harbor clinically occult metastases, a characterization that can be challenging to make using routine imaging modalities. Ferumoxytol has been previously investigated as an intra-tumoral contrast agent for magnetic resonance imaging (MRI) for intracranial malignancies and lymph node agent in prostate cancer.

Disease Characteristics, Radiologic Patterns, Comorbid Diseases, and Ethnic Differences in 32 Patients With Rosai-Dorfman Disease.

Objective: Rosai-Dorfman disease (RDD) is a rare and idiopathic nonneoplastic disease of histiocytes that is characterized by lymphadenopathy and extranodal disease. In this study, we documented anatomical preferences, imaging findings, comorbid diseases, and ethnic differences in 32 RDD patients.

Methods: We conducted a retrospective review of pathologically confirmed cases seen at our institution from 1998 to 2016.