Imaging and endovascular management of haemoptysis in congenital heart disease.

Haemoptysis, a rare but serious complication that can arise in patients with congenital heart disease, necessitates prompt diagnosis and specialized care. The radiologist plays a critical role in this scenario, including identifying the source of haemoptysis, devising treatment plans, and delivering endovascular interventions. This article highlights the importance of imaging techniques, especially computed tomography, in identifying the cause of haemoptysis and the therapeutic value of endovascular interventions.

Multimode Masers of Thermally Polarized Nuclear Spins in Solution NMR.

We present experimental single and multimode sustained ^{1}H NMR masers in solution on thermally polarized spins at room temperature and 9.4 T achieved through the electronic control of radiation feedback (radiation damping). Our observations illustrate the breakdown of the usual three-dimensional Maxwell-Bloch equations for radiation feedback and a simple toy model of few coupled classical moments is used to interpret these experiments.

A Rare Case of Phosphaturic Mesenchymal Tumor Distal Femur in a Young Female.

Introduction: Phosphaturic mesenchymal tumors (PMTs) are rare bone neoplasms with diverse clinical presentations, often posing diagnostic challenges.

Case Report: We describe the case of a 37-year-old female schoolteacher with a PMT localized in the distal femur. Diagnostic indicators included hypophosphatemia, hyperphosphaturia, elevated fibroblast growth factor-23 levels, and clinical symptoms of osteomalacia.

Dipolar field effects in a solid-state NMR maser pumped by dynamic nuclear polarization.

We report the observations and the analysis of a pulsed solid state sustained maser generated by proton spins hyperpolarized by Dynamic Nuclear Polarization (DNP) at cryogenic temperatures. Similar unconventional behaviour was observed recently [Weber , , 2019, , 21278-21286], with induction decays exhibiting multiple asymmetric maser pulses for short time (100 ms) and persistent for tens of second, when the spins are polarized negatively. We present new evidence of such DNP NMR masers, and shed light on previously observed but unexplained features of these masers through simulations of the non-linear spin dynamics using the Bloch-Maxwell-Provotrov (BMP) equations for radiation damping and DNP, and taking into account the (distant) dipolar field.

Canal occlusion in cemented primary total hip replacement: autologous compacted bone block compared to a commercially available gelatine plug.

Aims: To evaluate the stability of 2 canal occlusion systems; an autologous, compacted bone block and the biodegradable C-plug. We also sought to investigate any relationship between stability of the systems and the quality of cementation. A retrospective radiographic comparative review was conducted.