Figure 1. Top, An abdominal CT scan with contrast enhancement demonstrates a liver abscess at the lateral segment of the left hepatic lobe, with a linear fish bone (arrow) visible within the abscess. Bottom, A non–contrast-enhanced CT scan in oblique coronal reformation demonstrated that the fish bone was retained in the liver without any sequelae. prolonged courses of oral artesunate to our pa...

Background Characterization of carotid artery morphology and plaque composition requires multiple measurements with different contrast-weightings, which are limited by long scan time, image misregistration, and expertise-dependency in image interpretation. Recently, a new method,3D Multicontrast ATherosclerosis CHaracterization (MATCH) has been developed to overcome the above drawbacks by acqui...

Background The conventional MRI protocol for the characterization of atherosclerotic plaques involves a series of scans that provide multiple contrast weightings for resolving highrisk plaque characteristics [1]. However, mis-registration between image sets due to the inter-scan motion often compromises evaluation accuracy and image interpretation is expertise dependent [2]. The aim of this wor...

A 53-year-old woman complaining of worsening dys-pnoea and enlarging swelling in the neck after cough and acute sudden pain at the base of the neck. Contrast enhanced CT scan showing large cervical and mediastinal hematoma with bilateral pleural effusion (Fig. 1). Angiography: ruptured aneurysm of left lower thyroid artery treated by embolization (Fig. 2). Fig. 1. Contrast enhanced CT scan show...

Picture 1. Non-contrast-enhanced axial CT scan shows crescentic thickening and high atenuation of the aortic wal from the 1 o’clock to the 8 o’clock position (large arrow), as wel as displacement of intimal calcification (smal arrow) in the descending thoracic aorta (A). Contrast-enhanced axial CT scan at the same level shows that there is no intimal flap and a communication within the area of ...

Integrated SPECT/CT scanners are gaining popularity as hybrid molecular imaging devices which can acquire SPECT and CT in a single exam. CT can be a low dose non-contrast enhanced scan for attenuation correction and anatomical localization, or a contrast enhanced diagnostic quality scan for additional anatomical characterization. We present a pictorial review highlighting the usefulness of this...

The computed tomographic (CT) scan appearance of parenchymal central nervous system (CNS) infection in 12 immunosuppressed patients was unlike that of the usual bacterial abscess in immunologically intact hosts. The lesions were poorly circumscribed and of low density. Contrast enhancement was minimal and did not assume a "ring" configuration. These CT scan findings heralded a poor prognosis. C...

The number of reports of nanoparticle CT contrast agents has been growing swiftly over the past 5 years. These nanoparticles can be applied to produce long-lived CT contrast in the blood vessels and to perform targeted imaging, and can be used in conjunction with a new CT technique – multicolor CT. Such innovations offer the promise of new applications and diagnoses that can be performed with C...