Minimal subpleural loss of perfusion due to a sub-subsegmental pulmonary embolism that can´t be distinguished with angiography. Read more

Purpose of this study was to determine the diagnostic value of dual energy CT in the assessment of pulmonary perfusion with reference to pulmonary perfusion scintigraphy. Read more

Tips and tricks As the FOV is limited to 26 cm due to the smaller detector of the B-system, it is very important to place the patient centrally in the scan field to cover as much lung parenchyma as possible. Use a lateral and … Read more

Please, click on the title to see the protocol. Read more

The following question has been sent by  Minh Truong: Please, give me a advise, How to compare between CT perfusion and MR perfusion, which one is better than? thank you and best regards Thorsten R.C. Johnson, M.D., University Hospitals Grosshadern, Munich: Both MR and CT pulmonary perfusion imaging are currently still being evaluated scientifically … Read more

Spiral dual energy CT angiography offers new opportunities for the assessing the relevance of pulmonary emboli. In an initial study at the University of Munich, we examined 24 patients with suspected pulmonary embolism. Exams were performed with a single acquisition, spiral dual energy CT angiography protocol on a SOMATOM Definition. Voxels … Read more

History A 72-year-old female patient suffering from severe dyspnea is referred for pulmonary CT angiography to rule out pulmonary embolism. Question CT angiography is performed to rule out pulmonary embolism, right heart dilatation or pulmonary hypertension. Diagnosis/Differential diagnosis Apart from acute pulmonary embolism, differential diagnoses include primary right heart failure, secondary pulmonary hypertension, congestive heart … Read more