Thomas Herold

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In a prospective and randomised clinical study, acetabular cups were implanted free-hand (control group n=22) or with computer assistance using an image-free navigation system (study group n=23). The cup position was determined postoperatively on pelvic CT. An average inclination of 42.3° (range: 30°–53°; SD±7.0°) and an average anteversion of 24.0° (range:(More)
OBJECTIVE A variety of mathematical and trigonometric methods has been described for determining the position of the acetabular cups from conventional radiographs. However, these formulae are subject to unduly large inaccuracies. The aim of the study was to compare the reliability and the accuracy of radiological and CT-based determination of acetabular cup(More)
PURPOSE To retrospectively analyze the technical result and long term outcome of central venous arm ports placed by radiologists. MATERIALS AND METHOD Over a 5-year period, 399 arm ports were implanted by radiologists in 391 patients. The system consists of a low profile titanium chamber and a silicone catheter. Ports were placed at the forearm after(More)
PURPOSE A prospective study to assess the value of indirect magnetic resonance-arthrography (MR-Arthro) in the detection of lesions of the superior labrum (SLAP-lesions). MATERIALS AND METHODS Unenhanced magnetic resonance imaging (MRI) and indirect MR-Arthro of the shoulder were performed in 35 patients (9 females and 26 males) with a history of acute or(More)
The sequence analysis of five new field isolates of potato spindle tuber viroid (PSTVd) of different virulence revealed that the lengthof their RNA chain is not strictly conserved to 359 nucleotides (nts), as one could have inferred from the previously sequenced PSTVd strains. It was now found that the chain length is strain-specific like in the case of(More)
We report two cases of proximal endograft collapse with an almost complete aortic occlusion after endovascular tube-graft treatment of thoracic aortic disease (thoracic aneurysm after a type B dissection, traumatic blunt aortic rupture) using the TAG Gore system. Oversizing of endografts is known to cause this complication. In our two cases, however, the(More)
Holger Puchta, ~" 3 Thomas Herold, ~ Ko Verhoeven, 2 Annelien Roenhorst, 2 Karla Ramm, 1 Waltraud Schmidt-Puchta 1, 3 and Heinz L. S/tnger 1, 1Max-Planck-Institut far Biochemie, Abteilung Viroidforschung, D-8033 Martinsried bei Mf~nchen, FR G (* author for correspondence); 2 Plantenziektenkundige Dienst, Postbus 9102, 6700 HC Wageningen, The Netherlands; 3(More)
OBJECTIVE The objective of our study was to prospectively evaluate the diagnostic accuracy of intraarterial (i.a.) and i.v. MR angiography (MRA) of the infrainguinal arteries in comparison with the reference standard selective digital subtraction angiography (DSA). SUBJECTS AND METHODS Twenty consecutive patients with symptomatic peripheral arterial(More)
PURPOSE To evaluate the therapeutic outcome after endovascular treatment of renal vascular lesions using the liquid embolization agent, Onyx. MATERIALS AND METHODS Between 2004 and 2008 nine patients with renal vascular lesions were treated with transcatheter arterial embolization using Onyx. The renal vascular lesions consisted of 4 AV-fistulas, a(More)
OBJECTIVE The aim of this study was to demonstrate the possibility of performing magnetic resonance (MR)-guided interventional therapy for femoral and popliteal artery stenoses with commercially available materials supported by MR real-time imaging and intra-arterial MR angiography. MATERIALS AND METHODS A total of 15 patients suffering from symptomatic(More)