Hannes Gruber

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We report 54 patients with histologically evaluated musculoskeletal masses who underwent grey-scale and contrast-enhanced ultrasound (CEUS), followed by ultrasound-guided biopsy. We hypothesise that the definition of a CEUS-based enhancement pattern improves the characterisation of tumour malignancy. Fifty-four patients with soft-tissue masses were examined(More)
High resolution ultrasound (HR-US) including color Doppler ultrasound (CD-US), power Doppler ultrasound (PD-US), and spectral wave analysis (SWA), is a broadly available, non-invasive and relatively low-cost modality without ionizing radiation. It is increasingly used for initial assessment of an ambiguous musculoskeletal soft-tissue lesion and for(More)
High-resolution ultrasound is an excellent diagnostic modality for visualising peripheral nerves and differentiate tumours of the peripheral nerve. With high-frequency transducers (5-15 MHz), peripheral nerves can be visualised, the hypoechoic nerve fascicles, the surrounding tissue and tumourous lesions including the relation to their nerve of origin can(More)
PURPOSE Anesthetic infiltration of the pudendal nerve at the ischial spine can relieve perineal pain in cases of compression or distention. The aim of our study was to look for a real-time, visually controlled infiltration technique using ultrasound. METHODS Fifty-three volunteers were examined in a prone position using a 3.5-MHz curved-array probe in(More)
PURPOSE We report the topographic relationship of the pudendal nerve to the accompanying pudendal vessels and the ischial spine and provide the basics for an ultrasonographic depiction of these structures. METHODS Twenty-nine female and 29 male adult human cadavers were positioned prone to expose the deep gluteal region. In 58 left and 58 right pelves the(More)
BACKGROUND AND OBJECTIVES Facet joint injections are widely used for alleviation of back pain. Injections are preferentially performed as fluoroscopy or computed tomography (CT)-controlled interventions. Ultrasound provides real-time monitoring, does not produce ionizing radiation, and is broadly available. METHODS We studied feasibility, accuracy,(More)
Thirty women (mean age 49 years; range 33-74) with mild to moderate pelvic relaxation and genuine stress incontinence underwent preoperative urodynamic studies. Biopsy specimens from the levator ani muscles during vaginal hysterectomy and repair were evaluated for the number and the individual diameters of type I (slow-twitch) and type II (fast twitch)(More)
OBJECTIVE Traumatic knee dislocation needs immediate surgical repair to restore joint function. A concomitant traction injury of the peroneal nerve is reported to exist in up to 25% of cases and is often overlooked initially. In patients with major nerve lesions, immediate surgical nerve repair might be necessary to avoid irreversible loss of neural(More)
OBJECTIVE To determine feasibility of ultrasonography in detecting the normal accessory nerve as well as pathologic changes in cases of accessory nerve palsy. METHODS Four patients with accessory nerve palsy were investigated by ultrasonography. Three cases of accessory nerve palsy after lymph node biopsy and neck dissection were primarily diagnosed on(More)