S
Sacha Bull
Researcher at University of Zurich
Publications - 7
Citations - 303
Sacha Bull is an academic researcher from University of Zurich. The author has contributed to research in topics: Coronary artery disease & Correction for attenuation. The author has an hindex of 6, co-authored 7 publications receiving 281 citations.
Papers
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Journal ArticleDOI
Coronary computed tomography angiography with model-based iterative reconstruction using a radiation exposure similar to chest X-ray examination
Tobias A. Fuchs,Julia Stehli,Sacha Bull,Svetlana Dougoud,Olivier F. Clerc,Bernhard A. Herzog,Ronny R. Buechel,Oliver Gaemperli,Philipp A. Kaufmann +8 more
TL;DR: Coronary computed tomography angiography acquisition with diagnostic image quality is feasible at an ultra-low radiation dose of 0.21 mSv, e.g. in the range reported for a postero-anterior and lateral chest X-ray.
Journal ArticleDOI
Accuracy of coronary CT angiography using a submillisievert fraction of radiation exposure: comparison with invasive coronary angiography.
Julia Stehli,Tobias A. Fuchs,Sacha Bull,Olivier F. Clerc,Mathias Possner,Ronny R. Buechel,Oliver Gaemperli,Philipp A. Kaufmann +7 more
TL;DR: The use of MBIR reconstruction allows accurate noninvasive diagnosis of CAD with CTA at a submillisievert fraction of effective radiation dose comparable with a chest x-ray in 2 views.
Journal ArticleDOI
Impact of a New Motion-Correction Algorithm on Image Quality of Low-Dose Coronary CT Angiography in Patients with Insufficient Heart Rate Control
Tobias A. Fuchs,Julia Stehli,Svetlana Dougoud,Michael Fiechter,Bert-Ram Sah,Ronny R. Buechel,Sacha Bull,Oliver Gaemperli,Philipp A. Kaufmann +8 more
TL;DR: A novel, vendor-specific, motion-corrected, reconstruction algorithm improves image quality and interpretability of prospectively ECG-triggered low-dose CCTA despite insufficient heart rate control.
Journal ArticleDOI
First experience with single-source, dual-energy CCTA for monochromatic stent imaging.
Julia Stehli,Tobias A. Fuchs,Adrian Singer,Sacha Bull,Olivier F. Clerc,Mathias Possner,Oliver Gaemperli,Ronny R. Buechel,Philipp A. Kaufmann +8 more
TL;DR: Monochromatic CCTA can be used reliably in patients with coronary stents, however, reconstructions with energies below 80 keV are not recommended as the blooming artefacts are most pronounced at such low energies, resulting in up to 90% stent diameter underestimation.
Journal ArticleDOI
Coronary artery calcium quantification from contrast enhanced CT using gemstone spectral imaging and material decomposition
Tobias A. Fuchs,Julia Stehli,Svetlana Dougoud,Bert-Ram Sah,Sacha Bull,Olivier F. Clerc,Mathias Possner,Ronny R. Buechel,Oliver Gaemperli,Philipp A. Kaufmann +9 more
TL;DR: To explore the feasibility of coronary artery calcium (CAC) measurement from low-dose contrast enhanced coronary CT angiography (CCTA) as this may obviate the need for an unenhanced CT scan, single-source dual-energy scanning with GSI allows CAC quantification from low dose contrast enhanced CCTA by virtual iodine contrast subtraction.