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Andrea B. Rosskopf

Andrea B. Rosskopf
University Hospital Balgrist · Radiology

MD

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65
Publications
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601
Citations

Publications

Publications (65)
Article
An infraclavicular catheter is a very efficient technique to provide excellent perioperative anesthesia/analgesia for upper limb surgery. However, complications can occur and are dependent on the technique used. We report the inadvertent placement of an infraclavicular catheter in the interscalene region when an ultrasound-guided infraclavicular ca...
Article
Full-text available
Objective This study aims to evaluate the image quality of virtual non-contrast (VNC) images calculated from dual-energy CT shoulder arthrography (DECT-A) and their ability to detect periosteal calcifications and intraarticular loose bodies. Materials and methods In 129 shoulders of 123 patients, DECT arthrography (80 kV/140 kV) was performed with...
Article
Traumatic and non-traumatic tendon lesions are common at the wrist and hand. For the diagnosis, therapy management, and long-term prognosis of tendon lesions, a detailed understanding of the complex anatomy and knowledge of typical injury patterns is crucial for both radiologists and clinicians. Improvements in high-resolution ultrasound are produc...
Article
This study aimed to analyse the clinical and radiological outcomes after ulnar head replacement and to compare partial and total ulnar head implants. Twenty-two patients with 23 implants were available with a mean follow-up time of 7 years (range 1.3 to 17) after distal radioulnar joint arthroplasty. At the final follow-up, patients had a low level...
Article
Full-text available
Objective To evaluate the image quality of dual energy CT (DECT) of the shoulder after arthrography and of virtual non-contrast (VNC) 3D reformats of the glenoid and to compare glenoid measurements on VNC 3D reformats and on 2D CTs. Materials and methods DECT arthrography (80 kV/140 kV) was performed in 42 shoulders of 41 patients with instability...
Article
Full-text available
Purpose To evaluate the MRI anatomy of the scapho-trapezial-trapezoidal (STT) ligament complex in asymptomatic and symptomatic individuals. Material and methods In this retrospective study, STT ligament complex of 42 (male 69%, median age 37.5 years) asymptomatic ( n = 25) and symptomatic ( n = 17) (defined as pain described over the STT joint) in...
Chapter
Detailed MR findings of various tendon diseases and injuries in the wrist and hand and their therapeutic options.
Article
Full-text available
Background: Magnetic resonance imaging (MRI) is the actual gold standard for the radiological diagnosis of diabetic foot osteomyelitis (DFO). Materials and methods: However, MRI is not always available, and many patients have contraindications. We evaluate the clinical value of 99mTc-antigranulocyte SPECT/CT (AGS) in eight DFO patients who under...
Article
Tendon injuries represent the second most common injury of the hand (after fractures) and are a common scanning indication in radiology. Pulley injuries are very frequent in rock climbers with the A2 pulley the most commonly affected. Tendon and pulley injuries can be reliably evaluated using ultrasound (US) and magnetic resonance imaging (MRI). US...
Article
Full-text available
Background: Ultrasound (US) images are currently displayed on monitors, and their understanding needs good orientation skills. Direct overlay of US images onto the according anatomy is possible with augmented reality (AR) technologies. Our purpose was to explore the performance of US-guided needle placement with and without AR in situ US viewing....
Article
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The purpose was to study if (1) diurnal changes occur in the entire spine and if (2) intervertebral discs (IVDs) of weightlifters (WL) have decreased baseline T2-values in the morning as well as (3) increased diurnal changes throughout the day. This prospective cohort study investigated healthy volunteers between 2015 and 2017. WL were required to...
Article
Full-text available
Objective To develop a new magnetic resonance imaging(MRI) scoring system for evaluation of active Charcot foot and to correlate the score with a duration of off-loading treatment ≥ 90 days.Methods An outpatient clinic database was searched retrospectively for MRIs of patients with active Charcot foot who completed off-loading treatment. Images wer...
Article
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Background: Few studies have addressed the appropriate duration of antibiotic therapy for diabetic foot infections (DFI) with or without amputation. We will perform two randomized clinical trials (RCTs) to reduce the antibiotic use and associated adverse events in DFI. Methods: We hypothesize that shorter durations of postdebridement systemic an...
Preprint
Background: Few studies address the appropriate duration of antibiotic therapy for diabetic foot infections (DFI); with or without amputation. We will perform two randomized clinical trials (RCT) to reduce the antibiotic use and associated adverse events in DFI. Methods: We hypothesize that shorter durations of post-debridement systemic antibiotic...
Article
Full-text available
Abstract Charcot foot refers to an inflammatory pedal disease based on polyneuropathy; the detailed pathomechanism of the disease is still unclear. Since the most common cause of polyneuropathy in industrialized countries is diabetes mellitus, the prevalence in this risk group is very high, up to 35%. Patients with Charcot foot typically present in...
Preprint
Background: Few studies address the appropriate duration of antibiotic therapy for diabetic foot infections (DFI); with or without amputation. We perform two randomized clinical trials (RCT) to reduce the antibiotic use and associated adverse events in DFI. Methods: We hypothesize that shorter durations of post-debridement systemic antibiotic thera...
Conference Paper
Purpose: To quantify degeneration and clinical outcome after curettage and cementation in subchondral localization of giant cell tumor (GCT) at the knee. Methods: Retrospective analysis of 14 patients (7 male, 7 female) who underwent subchondral curettage and cementation for a biopsy-proven GCT at the knee between 08/2002 and 08/2017 with a mean ag...
Article
Shoulder surgery in the beach chair position is routinely performed, and central neurological events are rare but potentially devastating. We present a patient with transient neurological deficits after a sudden blood pressure drop with a simultaneous decrease of regional cerebral saturation values registered by cerebral oximetry. We reviewed publi...
Article
Full-text available
Background It is not exactly known whether guided growth or definitive epiphysiodesis techniques are superior in treating limb length discrepancy (LLD). The purpose of the present study was therefore to find out if definitive epiphysiodesis is associated with more powerful LLD correction than tension band plate epiphysiodesis. Methods Pediatric pa...
Article
Shoulder surgery in the beach chair position is routinely performed, and central neurological events are rare but potentially devastating. We present a patient with transient neurological deficits after a sudden blood pressure drop with a simultaneous decrease of regional cerebral saturation values registered by cerebral oximetry. We reviewed publi...
Article
Purpose: To compare changes in the pubic symphysis between women with vaginal delivery and women with caesarean sections within the first postpartum week. Materials and methods: After institutional review board approval 30 healthy women were prospectively examined with MRI (transverse STIR-sequence) three days after delivery. 17 women with vagin...
Data
Figure S2. Gastrointestinal uptake of sildenafil was confirmed by detecting increased intraocular pressure.
Data
Figure S1. Effects of tendon release and pharmacological treatment on the contralateral m. infraspinatus.
Article
Full-text available
Chronic rotator cuff (RC) tears are characterized by retraction, fat accumulation, and atrophy of the affected muscle. These features pose an intractable problem for surgical repair and subsequent recovery, and their prevention may be easier than reversal. Using an established ovine model, we tested the hypothesis that inhibition of the protease ca...
Article
Objectives: The aim of this study was to quantitatively assess changes in collagen structure using MR T1- and T2*-mapping in a novel controlled ex vivo tendon model setup. Materials and methods: Twenty-four cadaveric bovine flexor tendons underwent MRI at 3 T before and after chemical modifications, representing mechanical degeneration and augme...
Article
Objective To test a 3D-hindfoot alignment (HA) measurement technique based on low-dose biplanar radiographs (BPRs) in a clinical setting and compare the results with 2D-HA measurements on long axial view radiographs (LARs). Materials and methods This prospective study was approved by the local institutional review board. HA measurements on 3D-BPR...
Article
Purpose To determine the diagnostic performance of MRI for helping to predict posterolateral knee instability in patients with acute anterior cruciate ligament (ACL) tear. Materials and Methods This retrospective cohort study was performed in a consecutive series of 162 patients (mean age, 32.8 years ± 10.0 [standard deviation]; 95 men [mean age, 3...
Article
Full-text available
Objectives: The aim of this study was to assess feasibility and accuracy of augmented reality-guided lumbar facet joint injections. Materials and methods: A spine phantom completely embedded in hardened opaque agar with 3 ring markers was built. A 3-dimensional model of the phantom was uploaded to an augmented reality headset (Microsoft HoloLens...
Article
Full-text available
Zusammenfassung Der Charcot-Fuss ist assoziiert mit einer peripheren Neuropathie und tritt in der Regel bei Patienten mit langjährigem Diabetes mellitus auf. Das Krankheitsbild ist selten, kann zu ausgeprägten Fuss-Destruktionen führen und die Patienten im Alltag sehr beeinträchtigen. Die radiologische Bildgebung spielt eine zentrale Rolle während...
Article
Full-text available
Objective: To compare the prevalence of vitamin D insufficiency between radiologists and a control group of non-radiologists. Materials and methods: This prospective cross-sectional study was conducted at the Swiss Congress of Radiology in May of 2016. Attendees (radiologists and non-radiologists) were asked to give a venous blood sample to meas...
Article
Objective To describe the frequency of inflammatory-like findings on MR imaging in asymptomatic volunteers and compare them with patients with known rheumatoid arthritis and psoriatic arthritis. Materials and methodsMR images of fingers in 42 asymptomatic volunteers and 33 patients with rheumatoid/psoriatic arthritis were analyzed. The Outcome Meas...
Article
Purpose: Injection drug users are at high risk for both infection with blood-borne pathogens, namely, human immune deficiency virus (HIV), hepatitis-B, -C virus, various bacterial infections, as well as early primary and secondary joint degeneration. When total knee arthroplasty (TKA) is anticipated the risk of septic complications is a major conc...
Article
Objective: To assess whether the use of cartilaginous contours at the femoral condyles instead of bony contours significantly changes femoral torsion measurements in children. Materials and methods: Femoral torsion was measured in 32 girls (mean age 10.1 years±2.3 standard deviation) and 42 boys (10.9 years±2.5) on axial magnetic resonance (MR)...
Article
Objective The aim of our study was to evaluate the reliability and interchangeability of femoral (FT) and tibial torsion (TT) measurements in children using magnetic resonance (MR) imaging compared to measurements on 3D models based on biplanar radiographs (BPR). Materials and methodsFT and TT were measured in 60 children (mean age 10.1 years; rang...
Article
Objective: The objective of our study was to assess delayed-onset muscle soreness (DOMS) over time using quantitative MRI and shear-wave ultrasound (US) elastography. Subjects and methods: Five male (mean age ± SD, 39.6 ± 4.6 years) and five female (30.6 ± 13.5 years) volunteers underwent 1.5-T MRI before and after (15 minutes, 1 day, 3 days, 7...
Article
Objective The purpose of this study is to compare the reliability of SW velocity measurements of two different ultrasound systems and their correlation with the tangent traction modulus in a non-static tendon strain model. Materials and MethodsA bovine tendon was fixed in a custom-made stretching device. Force was applied increasing from 0 up to 18...
Article
Objectives To determine whether specific MRI findings are related to outcomes after lumbar transforaminal epidural steroid injections (TFESI) and to assess the inter-rater reliability of imaging diagnosis. Materials and methodsA prospective outcomes study on 156 consecutive patients with 1-month follow-up outcomes data and MRI within 3 months of TF...
Article
Full-text available
Objective To evaluate reliability of 2D and 3D lower limb measurements in adults using micro-dose compared to low-dose biplanar radiographs(BPR). Materials and methodsOne hundred patients (mean 54.9 years) were examined twice using micro-dose and low-dose BPR. Length and mechanical axis of lower limbs were measured on the antero-posterior(ap) micro...
Article
Objectives: To evaluate quantification of early fatty infiltration in supraspinatus muscles with magnetic resonance (MR) imaging using a T2*-corrected multi-echo 3D-gradient-echo Dixon-based sequence (multi-echo Dixon) and compare it to proton-MR-spectroscopy. Methods: Sixty subjects (mean age 46 years, 41 men) with good supraspinatus muscle qua...
Article
Objective: To compare detection of spinal ligament enthesitis between gadolinium-enhanced fat-saturated T1-weighted gadolinium-enhanced fat-saturated T1-weighted (T1+Gd) and STIR sequences in patients with suspected spondyloarthritis. Materials and methods: Sixty-eight patients (37 males, 42 ± 14 years) with a sacroiliac-joint (SIJ) and lumbar s...
Article
Purpose To evaluate the reliability of ultrasonographic (US) elastography of the supraspinatus (SSP) muscle, define normal shear-wave velocity (SWV) values, and correlate findings with tendon integrity and muscle quality. Materials and Methods The study was approved by the local ethics committee, and written informed consent was obtained from all p...
Article
The purpose of this article is to evaluate the quality of reports of knee MRI examinations in form, content, and diagnosis and to assess the effect of three different quality improvement measures. Reports of 500 knee MRI examinations (first round, or baseline) were reviewed retrospectively by five musculoskeletal radiologists. Fifteen different cri...
Book
Full-text available
Das Buch enthält alle notwendigen Grundlagen zur zuverlässigen sonografischen Diagnosestellung von Erkrankungen und Veränderungen der Hand. Nach einer umfassenden Einführung in die physikalischen Grundlagen der Sonografie und die sonografische Anatomie der Hand samt Varianten, werden entzündliche, degenerative, kompressive und traumatische Veränder...
Article
To assess alternative measurements to the alpha angle as a tool for distinguishing between symptomatic and asymptomatic cam-type deformities of the femoral head. Magnetic resonance imaging (MRI) examinations of 106 individuals (age 20-50 years) from a previous study on the alpha angle were analyzed, including 53 femoroacetabular impingement (FAI) p...
Chapter
In diesem Kapitel erhält der Leser eine genaue Beschreibung der typischen Darstellung des normalen Gewebes (Sehnen, Bänder, Nerven, Muskeln, Knorpel etc.) im Ultraschall anhand zahlreicher Bildbeispiele. Es werden alle wichtigen anatomischen Strukturen und deren Normvarianten im Detail beschrieben – vom distalen Unterarm, über Handgelenk/Karpaltunn...
Article
Full-text available
OBJECTIVES: To report patient outcomes up to 1 month after fluoroscopy-guided iliopsoas bursa injection for suspected iliopsoas tendinopathy. METHODS: Thirty-nine consecutive patients (mean age 45 years; range 15-77) who underwent fluoroscopy-guided therapeutic iliopsoas bursa injection using an anterolateral approach and who returned an outcomes q...
Article
Full-text available
Objective: The purpose of this study was to evaluate the interchangeability and reliability of femoral and tibial torsion measurements in children using 3D models based on biplanar radiography compared with CT measurements. Materials and methods: Femoral and tibial torsion were measured in 50 patients (mean age, 10.9 years; range, 4.7-14.8 years...
Article
Anomalous origin of the Left main Coronary Artery from the Pulmonary Artery (also called ALCAPA or Bland-White-Garland syndrome) is a rare finding with an o ften fatal natural history due to left ventricular i schaemia. T his case report describes the late diagnosis and therapy of an anomalous origin of the left anterior descending coronary artery...
Article
This study sought to investigate the feasibility and safety of percutaneous management of vascular complications after transcatheter aortic valve implantation (TAVI). Vascular complications after TAVI are frequent and outcomes after percutaneous management of these adverse events not well established. Between August 2007 and July 2010, 149 patients...
Article
To assess the effect of tumor size and tumor-to-liver contrast of simulated hypovascular liver tumors on the diagnostic accuracy of hepatic computed tomography (CT). This retrospective study was approved by the institutional review board, and informed consent was waived. A total of 153 simulated hypovascular liver tumors were embedded in 70 hepatic...
Article
Minimally invasive or virtual autopsies are being advocated as alternative to traditional autopsy, but have limited abilities to detect coronary artery disease. It was the objective of this study to assess if the occurrence of chemical shift artifacts (CSA) along the coronary arteries on non-contrast, post-mortem cardiac MR may be used to investiga...
Article
Comparison of arterial and venous coronary artery bypass flow measurements using 3-T magnetic resonance (MR) phase contrast in correlation with intraoperative Doppler flow measurements. Fifty-six coronary bypasses (right coronary artery n=18, left internal mammary artery to left anterior descending artery n=16, marginal artery n=7, circumflex arter...
Article
Full-text available
Evaluation of a novel non-invasive tool for postoperative follow-up of patients postelective saphenous vein coronary artery bypass graft (CABG) was performed. Ten patients were included. Their bypass grafts supplied the right coronary artery (7), marginal branches (1), diagonal branches (2), and the circumflex artery (n=1). Each bypass was examined...
Article
Full-text available
The objective of our study was to compare the performance of low-dose linear slit digital radiography (DR) with computed radiography (CR) for the detection of trauma sequelae in the chest including rib fractures, pneumothorax, and lung contusion. Eighty trauma victims (62 males, 18 females; mean age, 51.5 years) with a total of 612 rib fractures an...
Article
Acute type A aortic dissection is a serious emergency with a mortality rate of up to 40% within the first 24 h when left untreated. Surgical therapy needs to be initiated promptly. Due to this urgent situation, preoperative evaluation of the coronary arteries is not routinely performed in these patients. The aim of this study was to evaluate the ac...
Conference Paper
PURPOSE To compare abdominal-pelvic CT angiography at 100 and 80 kVp for image quality and radiation dose. METHOD AND MATERIALS In a retrospective study, our standard 100-kVp protocol for abdominal-pelvic 64-slice CT angiography was compared with an 80-kVp protocol in two groups each consisting of 30 consecutive patients. Group A (mean weight, 77....
Article
An infusion consisting of glucose + insulin + potassium (GIK) influences a lot of metabolic processes, that play an important role to the myocardial damage caused by an acute infarction (AMI). Present study verifies the hypothesis, if an GIK-infusion given additionally to a reperfusion therapy leads to a greater reduction of infarct size. 312 patie...

Projects

Project (1)
Project
Outcome of injections (3 different medications versus placebo)