Quantitative evaluation of gadoxetate hepatocyte phase homogeneity: potential imaging markers for detection of early cirrhosis.

Objective: Does quantitative analysis of the gadoxetate hepatocyte phase homogeneity, measuring percent standard deviation of hepatocyte phase (SDHP) and liver-to-kidney enhancement ratio (LiKER) detect early hepatic fibrosis?

Materials And Methods: Retrospective review of gadoxetate liver MRI plus biopsy-proven fibrosis within 6 months included 31 reversible hepatic fibrosis, 33 irreversible hepatic fibrosis, and 15 donors. Parenchymal and vascular SDHP and LiKER were measured on the 20-min hepatocyte phase using region of interest.

Results: Parenchymal SDHP, vascular SDHP and LiKER measurements differentiate early hepatic fibrosis from controls (P<.

More than just metastases: a practical approach to solid mesenteric masses.

The abdominal mesenteries are important peritoneal structures that give rise to a wide spectrum of abnormalities, including solid mesenteric masses. Despite similarities in appearance, solid masses in the mesentery may have diverse etiologies, ranging from benign to highly malignant. While metastases are the most common cause of solid masses in the mesentery, other less common conditions are also important diagnostic considerations.

Bedside sonography for detection of postprocedure pneumothorax.

Objectives: Bedside sonography for diagnosis of pneumothorax has been well described in emergency and trauma medicine literature. Its role in detection of iatrogenic pneumothorax has not been well studied. We describe the performance of bedside sonography for detection of procedure-related pneumothorax and highlight some limitations.

Comparison of strain ratio with elastography score system in differentiating malignant from benign thyroid nodules.

Background: To prospectively compare strain ratio to elastography score system in distinguishing between malignant and benign thyroid nodules.

Methods: The local institutional review board approved the study, and all patients provided written informed consent. We examined 168 thyroid nodules (52 malignant and 116 benign) with freehand elastography.

Spatial distribution of white-matter hyperintensities in Alzheimer disease, cerebral amyloid angiopathy, and healthy aging.

Background And Purpose: White-matter hyperintensities (WMHs) detected by magnetic resonance imaging are thought to represent the effects of cerebral small-vessel disease and neurodegenerative changes. We sought to determine whether the spatial distribution of WMHs discriminates between different disease groups and healthy aging individuals and whether these distributions are related to local cerebral perfusion patterns.

Methods: We examined the pattern of WMHs by T2/fluid-attenuated inversion recovery-weighted magnetic resonance imaging in 3 groups of subjects: cerebral amyloid angiopathy (n=32), Alzheimer disease or mild cognitive impairment (n=41), and healthy aging (n=29).

Primary angiosarcoma of the abdominal aorta: a case report and literature review (aortic angiosarcoma).

Fewer than 140 cases of aortic sarcoma have been reported with only 34 classified as angiosarcoma. These rare malignancies most often mimic aortoiliac occlusive or aneurysmal arteriosclerotic disease both clinically and on imaging studies, and the large majority are unexpected and diagnosed pathologically on a surgical specimen or at autopsy. A 42-year-old woman who presented with low back pain and claudication was shown by CT and angiography to have infrarenal aortic occlusion.