AIM To provide imaging data and report associations between human immunodeficiency virus (HIV), tuberculosis (TB) and pulmonary embolism (PE) in a South African population that underwent computed tomography pulmonary angiography (CTPA) for suspected PE. METHODS A validated Qanadli severity scoring system for PE was used for 164 CTPA scans, and parenchymal, pleural and cardiovascular complicat...

Since Virchow’s first description of pulmonary embolism, experts and clinicians have struggled with the diagnosis and treatment of this common condition. In Virchow’s time, the absence of diagnostic tests made pulmonary embolism a late diagnosis, one suspected just before death and often confirmed on autopsy. Today, pulmonary angiography, ventilation: perfusion nucleotide scanning, and most rec...

PURPOSE To assess image quality of CT pulmonary angiography (CTPA) at reduced radiation exposure (RD-CTPA) and contrast medium (CM) volume using two different iterative reconstruction (IR) algorithms (iDose4 and iterative model reconstruction (IMR)) in comparison to filtered back projection (FBP). MATERIALS AND METHODS 52 patients (body weight < 100 kg, mean BMI: 23.9) with suspected pulmonar...

Objectives: To evaluate if dual-energy CT (DECT) pulmonary angiography (CTPA) can detect anemia with the aid of machine learning. Methods: Inclusion 100 patients (mean age ± SD, 51.3 14.8 years; male-to-female ratio, 42/58) who underwent DECT CTPA and hemoglobin (Hb) analysis within 24 h, including 50 cases Hb below controls ≥ 12 g/dL. Blood pool attenuation was assessed on virtual noncontrast ...

Delayed cerebral ischemia (DCI) after subarachnoid hemorrhage can be evaluated using clinical assessment, non-invasive and invasive techniques. An electronic literature search was conducted on English-language articles investigating DCI in human subjects with subarachnoid hemorrhage. A total of 31 relevant papers were identified evaluating the role of clinical assessment, transcranial Doppler, ...