Abdominal imaging
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In just over a decade, hybrid imaging with FDG PET/CT has become a standard bearer in the management of cancer patients. An exquisitely sensitive whole-body imaging modality, it combines the ability to detect subtle biologic changes with FDG PET and the anatomic information offered by CT scans. ⋯ It offers unparalleled spatial resolution and functional multi-parametric data combined with biologic information in the non-invasive detection and characterization of diseases, without the deleterious effects of ionizing radiation. This article reviews the basic principles of FDG PET and MR imaging, discusses the salient technical developments of hybrid PET/MR systems, and provides an introduction to FDG PET/MR image acquisition.
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Current imaging procedures for prostate cancer including positron emission tomography (PET) exhibit considerable limitations and are not always able to meet the diagnostic needs. Recently, a (68)Gallium-labeled ligand of the prostate-specific membrane antigen ((68)Ga-PSMA) has been introduced in PET-imaging of prostate cancer with first promising results. ⋯ Together with the novel development of combined PET/MRI, the combination of excellent morphological detail, multiparametric functional information, and molecular PET data might lead to a significant improvement in detection of prostate cancer. We present an exemplarily case of primary staging using multiparametric (68)Ga-PSMA PET/MR by combining molecular and structural information.
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The aim of this study was to investigate the diagnostic performance of contrast-enhanced CT (CECT) findings for bowel ischemia and necrosis in closed-loop small-bowel obstruction (CL-SBO). ⋯ Reduced enhancements of bowel wall and mesenteric veins were good indicators of bowel ischemia or necrosis. On the contrary, engorgement of the mesenteric veins was a predictor of a viable bowel.
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The aim of this study was to prospectively investigate the predictive value of (18)F-FDG PET/CT semiquantitative parameters for locally advanced low rectal cancer (LARC) treated by neoadjuvant chemoradiation therapy (nCRT). ⋯ Qualitative and semiquantitative evaluations for (18)F-FDG PET/CT are the optimal approach; a valid parameter for response prediction has still to be established.
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Review Case Reports
Abdominal imaging findings in gastrointestinal basidiobolomycosis.
To describe the abdominal imaging findings of patients with gastrointestinal Basidiobolus ranarum infection. ⋯ Radiologists should consider GIB when a patient from an arid climate presents with abdominal pain, weight loss, and an inflammatory abdominal mass on CT. Abdominal masses of the colon or liver, bowel wall thickening, and abscesses are the most common imaging findings.