State of the art of CT myocardial perfusion.

Coronary computed tomography angiography (CCTA) is a powerful tool to rule out coronary artery disease (CAD). In the last decade, myocardial perfusion CT (CTP) technique has been developed for the evaluation of myocardial ischemia, thereby increasing positive predictive value for diagnosis of obstructive CAD. A diagnostic strategy combining CCTA and perfusion acquisitions provides both anatomical coronary evaluation and functional evaluation of the stenosis, increasing the specificity and the positive predictive value of cardiac CT.

How young radiologists use contrast media and manage adverse reactions: an international survey.

Objectives: To collect real-world data about the knowledge and self-perception of young radiologists concerning the use of contrast media (CM) and the management of adverse drug reactions (ADR).

Methods: A survey (29 questions) was distributed to residents and board-certified radiologists younger than 40 years to investigate the current international situation in young radiology community regarding CM and ADRs. Descriptive statistics analysis was performed.

Mesoscopic Assessment of Microstructure in Glioblastomas and Metastases by Merging Advanced Diffusion Imaging with Immunohistopathology.

Background And Purpose: Glioblastomas and metastases are the most common malignant intra-axial brain tumors in adults and can be difficult to distinguish on conventional MR imaging due to similar imaging features. We used advanced diffusion techniques and structural histopathology to distinguish these tumor entities on the basis of microstructural axonal and fibrillar signatures in the contrast-enhancing tumor component.

Materials And Methods: Contrast-enhancing tumor components were analyzed in 22 glioblastomas and 21 brain metastases on 3T MR imaging using DTI-fractional anisotropy, neurite orientation dispersion and density imaging-orientation dispersion, and diffusion microstructural imaging-micro-fractional anisotropy.

Comparison of the Fractured and Non-Fractured Orbit Before and After Surgery Using a Titanium Implant or a Resorbable Poly-d,l-lactic Acid (PDLLA) Implant: A Study from a Single Center in Niš, Serbia of 58 Patients with Unilateral Orbital Floor Fracture Using Volumetric Measurement.

BACKGROUND A fracture of the orbital floor can lead to complications such as enophthalmos, impaired eye motility, or diplopia, which is why it is necessary to reconstruct the bony walls of the orbit. This study from a single center in Niš, Serbia, included 58 patients with unilateral orbital floor fracture and aimed to use volumetric measurement to compare the fractured and non-fractured orbit before and after surgery using a titanium implant or a resorbable poly-d, l-lactic acid (PDLLA) implant. MATERIAL AND METHODS From 2018 to 2022, a total of 58 patients with unilateral orbital floor fractures were treated at the Clinic of Dental Medicine, Niš.