Harald Seifarth, M.D.

The advantge of DSCT in cardiac imaging is the good temporal resolution. The temporal resolution of the Definition is 83 ms and in the Flash it is even 75 ms, providing good image quality at high heart rates (see paper). Read more

Case history: Initial Diagnosis of Nephroblastoma. Diagnosis: CT shows 2 metastases in the left upper lobe. Description: Extremely short acquisition time with the High Pitch Mode (less than 1s) ensures depiction of pulmonary structures completely without motion artifacts. Read more

Case history: Child with nepphroblastoma before initiation of chemotherapy. Diagnosis: Exclusion of infiltrates Read more

The aim of this study was to determine whether individually tailored protocols for the injection of contrast medium (CM) result in higher and more homogeneous vascular attenuation throughout the coronary arteries at coronary CT angiography compared with conventional injection protocols using fixed injection parameters. Read more

Abstract The aim of this study was to assess the performance of a motion-map algorithm that automatically determines optimal reconstruction windows for dual-source coronary CT angiography. In datasets from 50 consecutive patients, optimal systolic and diastolic reconstruction windows were determined using the motion-map algorithm. For manual determination of the optimal … Read more

Naser Ahmadi, MD, USA, has sent the following question: Dual Source Dual Energy Recon Algorithm: I would like to know the reconstruction algorithm of dual energy dual source (Siemens-Definition). I know that peripendicular detectors of dual source empower Siemens CT scanner to capture/reconstruct images without (minimal) step artifact which is actually … Read more

Abstract Objective: The purpose of this study was to determine the position of the optimal systolic and diastolic reconstruction interval for coronary CT angiography using Dual-Source-CT (DSCT). Materials and methods: In 90 patients, coronary DSCT angiography was performed without a prescan administration of beta blocking agents. Data were reconstructed in 5 % … Read more

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

In Stroke CT it is still a challenge to define the whole extent of ischemia. The calculation of “perfused blood volume” maps allows to display the perfusion of the entire brain in a 3-dimensional manner. Requirements of advanced neuroimaging   Fast and reliable diagnosis is essential in patients … Read more

Case History An 80-year-old male patient is presenting with left sided hemiparesis and neglect; onset 2 hours ago Questions Exclusion of intracerebral hemorrhage. Demarcation of ischemic brain tissue, location and extent of cerebral infarction Diagnosis / Differential diagnosis The patient suffered from a right sided ischemic infarction following thrombembolic occlusion of a M2 branch of … Read more