Over the past 8 years, sweeping changes have altered the way US radiology departments operate regarding the use of contrast media. Until very recently, most radiology and pharmacy departments have ...

Rationale and Objectives Risk stratification in pulmonary embolism (PE) guides patient management. The purpose of this study was to develop and test novel mortality risk prediction models for subj...

Rationale and Objectives In radiology, multireader, multicase (MRMC) receiver-operating characteristic studies are commonly used to evaluate the accuracy of diagnostic imaging systems. The special...

Rationale and Objectives Roe and Metz (RM) proposed a model for simulating multireader multicase (MRMC) data collected from a factorial study design in which readers read the same cases in all mod...

Radiology practice involves extracting diagnostically useful information from medical images. Judgment is a necessary component of this process, as it is in all other medical specialties. Although ...

Rationale and Objectives A novel ventilation imaging method based on four-dimensional (4D) computed tomography (CT) has been applied to the field of radiation oncology. Understanding its reproduci...

Receiver-operating characteristic (ROC) methodology was developed during World War II to evaluate new signal detection technology. Subsequently, it was used extensively in radar signal detection an...

Rationale and Objectives Multireader imaging trials often use a factorial design, in which study patients undergo testing with all imaging modalities and readers interpret the results of all tests...

Rationale and Objectives Motion artifacts are a significant source of error in the acquisition and quantification of parameters from multi-b-value diffusion-weighted imaging (DWI). The objective o...

Objectives To characterize the magnetic resonance (MR) relaxation times (ie, T1 and T2 relaxation times) of a variety of kidney stone specimens using an ultra-short echo time (UTE) sequence and to...