Assessment of cerebral vasomotor reactivity by transcranial Doppler ultrasound and breath-holding: a comparison with acetazolamide as vasodilatory stimulus

M Muller, M Voges, U Piepgras, K Schimrigk - Stroke, 1995 - Am Heart Assoc
Background and Purpose Evaluating cerebrovascular vasomotor reactivity seems to be of
prognostic relevance for patients with occlusive internal carotid artery disease. To evaluate its …

Regional association of developmental venous anomalies with angiographically occult vascular malformations

…, M Hermes, S Felber, K Terstegge, U Piepgras - European …, 1996 - Springer
This study reviews the neuroradiological findings of 43 patients with a developmental
venous anomaly In in order to the clinical significance of this entity. All patients underwent …

MR findings in leukodystrophy

P Demaerel, C Faubert, G Wilms, P Casaer, U Piepgras… - Neuroradiology, 1991 - Springer
Up to 5 years ago, the radiological diagnosis of leukodystrophy was based on computed
tomography (CT). More recently, magnetic resonance imaging (MRI) has been used to study …

Correlation of regional cerebral blood flow measured by stable xenon CT and perfusion MRI

T Hagen, K Bartylla, U Piepgras - Journal of computer assisted …, 1999 - journals.lww.com
Purpose: The purpose of this work was to investigate the validity of perfusion MRI in comparison
with stable xenon CT for evaluating regional cerebral blood flow (rCBF). Method: The …

Multiple cerebral aneurysms in identical twins.

T Hagen, K Neidl, U Piepgras - American journal of …, 1997 - Am Soc Neuroradiology
We report the finding of multiple cerebral aneurysms in a pair of identical twins. One twin
had subarachnoid hemorrhage and intracerebral hematoma; her sister had subarachnoid …

Patient doses from standard and spiral CT of the head using a fast twin-beam system.

…, K Bartylla, G Blass, U Piepgras - The British Journal of …, 1997 - academic.oup.com
Investigations were carried out on a novel type of CT scanner, the Elscint CT-Twin, for
comparison and optimization of the patient dose caused by standard and spiral CT of the head. …

Magnetic resonance tomography in epidural and subdural spinal hematoma

…, A Dessl, M Ortler, G Birbamer, U Piepgras - Der Radiologe, 1994 - europepmc.org
Epidural and subdural spinal hematomas were previously diagnosed by myelography and
computed tomography (CT). Recent reports indicate that noninvasive detection is possible …

Thalamic bleeding: diagnosis, course and prognosis

U Piepgras, P Rieger - Neuroradiology, 1981 - Springer
Isolated thalamic bleeding without involvement of the internal capsule or other neighboring
structures is extremely rare. Thalamic hemorrhage often leads to bleeding into the ventricular …

Value of CT-angiography in diagnosis of cerebral sinus and venous thromboses

…, K Bartylla, A Waziri, B Schmitz, U Piepgras - Der Radiologe, 1996 - europepmc.org
Dural sinus thrombosis is not uncommon. Due to the nonspecific symptomatology, as well as
the manifold etiology, clinical diagnosis may be difficult. In these cases imaging procedures …

High-resolution constructive interference in steady-state imaging in tethered cord syndrome

SK Rosahl, O Kassem, U Piepgras, D Hellwig… - Surgical neurology, 2005 - Elsevier
BACKGROUND: Differentiation between nerve roots and the tethered filum terminale in
magnetic resonance images remains challenging. It is, however, crucial to select patients for …