Imaging of Acute Pulmonary Embolism: An Update.

Imaging is essential in the evaluation and management of acute pulmonary embolism. Advances in multi-energy CT including dual-energy CT and photon-counting CT have allowed faster scans with lower radiation dose and optimal quality. Artificial intelligence has a potential role in triaging potentially positive examinations and could serve as a second reader.

Cerebral palsy in Australia: birth prevalence, 1995-2016, and differences by residential remoteness: a population-based register study.

Objective: To examine recent changes in the birth prevalence of cerebral palsy in Australia; to examine the functional mobility of children with cerebral palsy by residential remoteness.

Study Design: Population-based register study; analysis of Australian Cerebral Palsy Register (ACPR) data.

Setting, Participants: Children with cerebral palsy born in Australia, 1995-2016, and included in the ACPR at the time of the most recent state/territory data provision (31 July 2022).

Measurement and Application of Incidentally Detected Coronary Calcium: JACC Review Topic of the Week.

Coronary artery calcium (CAC) scoring is a powerful tool for atherosclerotic cardiovascular disease risk stratification. The nongated, noncontrast chest computed tomography scan (NCCT) has emerged as a source of CAC characterization with tremendous potential due to the high volume of NCCT scans. Application of incidental CAC characterization from NCCT has raised questions around score accuracy, standardization of methodology including the possibility of deep learning to automate the process, and the risk stratification potential of an NCCT-derived score.

MR Perfusion Imaging of the Lung.

Lung perfusion assessment is critical for diagnosing and monitoring a variety of respiratory conditions. MRI perfusion provides a radiation-free technique, making it an ideal choice for longitudinal imaging in younger populations. This review focuses on the techniques and applications of MRI perfusion, including contrast-enhanced (CE) MRI and non-CE methods such as arterial spin labeling (ASL), fourier decomposition (FD), and hyperpolarized 129-Xenon (129-Xe) MRI.