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5 results on '"Witkamp Td"'

1. Using the fourth dimension to distinguish between structures for anisotropic diffusion filtering in 4D CT perfusion scans

Author

Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, Viergever, Max A., Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, and Viergever, Max A.

Published
2015

2. Using the fourth dimension to distinguish between structures for anisotropic diffusion filtering in 4D CT perfusion scans

Author

Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, Viergever, Max A., Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, and Viergever, Max A.

Published
2015

3. Using the fourth dimension to distinguish between structures for anisotropic diffusion filtering in 4D CT perfusion scans

Author

Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, Viergever, Max A., Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, and Viergever, Max A.

Published
2015

4. Using the fourth dimension to distinguish between structures for anisotropic diffusion filtering in 4D CT perfusion scans

Author

Strategische Impuls RvB ISI, Brain, Beeldverwerking ISI, MS Radiologie, Other research (not in main researchprogram), Circulatory Health, Cancer, Regenerative Medicine and Stem Cells, Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, Viergever, Max A., Strategische Impuls RvB ISI, Brain, Beeldverwerking ISI, MS Radiologie, Other research (not in main researchprogram), Circulatory Health, Cancer, Regenerative Medicine and Stem Cells, Durrleman, Stanley, Fletcher, Tom, Gerig, Guido, Niethammer, Marc, Pennec, Xavier, Mendrik, AM, Vonken, EPA, Witkamp, TD, Prokop, Mathias, Van Ginneken, Bram, and Viergever, Max A.

Published
2015

5. Diagnostic yield and accuracy of CT angiography, MR angiography, and digital subtraction angiography for detection of macrovascular causes of intracerebral haemorrhage: prospective, multicentre cohort study

Author

van Asch, CJJ, Velthuis, BK, Rinkel, GJE, Algra, A, de Kort, GAP, Witkamp, TD, de Ridder, JCM, van Nieuwenhuizen, KM, Leeuw, FE, Schonewille, WJ, de Kort, PLM, Dippel, Diederik, Raaymakers, TWM, Hofmeijer, J, Wermer, MJH, Kerkhoff, H, Jellema, K, Bronner, IM, Remmers, MJM, Bienfait, HP, Witjes, RJGM, Greving, JP, Klijn, CJM, van Asch, CJJ, Velthuis, BK, Rinkel, GJE, Algra, A, de Kort, GAP, Witkamp, TD, de Ridder, JCM, van Nieuwenhuizen, KM, Leeuw, FE, Schonewille, WJ, de Kort, PLM, Dippel, Diederik, Raaymakers, TWM, Hofmeijer, J, Wermer, MJH, Kerkhoff, H, Jellema, K, Bronner, IM, Remmers, MJM, Bienfait, HP, Witjes, RJGM, Greving, JP, and Klijn, CJM

Abstract

STUDY QUESTION What are the diagnostic yield and accuracy of early computed tomography (CT) angiography followed by magnetic resonance imaging/angiography (MRI/MRA) and digital subtraction angiography (DSA) in patients with non-traumatic intracerebral haemorrhage? METHODS This prospective diagnostic study enrolled 298 adults (18-70 years) treated in 22 hospitals in the Netherlands over six years. CT angiography was performed within seven days of haemorrhage. If the result was negative, MRI/MRA was performed four to eight weeks later. DSA was performed when the CT angiography or MRI/MRA results were inconclusive or negative. The main outcome was a macrovascular cause, including arteriovenous malformation, aneurysm, dural arteriovenous fistula, and cavernoma. Three blinded neuroradiologists independently evaluated the images for macrovascular causes of haemorrhage. The reference standard was the best available evidence from all findings during one year's follow-up. STUDY ANSWER AND LIMITATIONS A macrovascular cause was identified in 69 patients (23%). 291 patients (98%) underwent CT angiography; 214 with a negative result underwent additional MRI/MRA and 97 with a negative result for both CT angiography and MRI/MRA underwent DSA. Early CT angiography detected 51 macrovascular causes (yield 17%, 95% confidence interval 13% to 22%). CT angiography with MRI/MRA identified two additional macrovascular causes (18%, 14% to 23%) and these modalities combined with DSA another 15 (23%, 18% to 28%). This last extensive strategy failed to detect a cavernoma, which was identified on MRI during follow-up (reference strategy). The positive predictive value of CT angiography was 72% (60% to 82%), of additional MRI/MRA was 35% (14% to 62%), and of additional DSA was 100% (75% to 100%). None of the patients experienced complications with CT angiography or MRI/MRA; 0.6% of patients who underwent DSA experienced permanent sequelae. Not all patients with negative CT angiography and MRI/M

Published
2015

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