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Baum C, Audigé L, Stojanov T, Müller SA, Candrian C, Müller AM, Rosso C, Fankhauser L, Willscheid G, Moroder P, Akgün D, Danzinger V, Gebauer H, Imiolczyk JP, Karpinski K, Lacheta L, Minkus M, Paksoy A, Samaniego E, Thiele K, Weiss I, Suter T, Müller-Lebschi J, Mueller S, Saner M, Haag-Schumacher C, Tamborrini-Schütz G, Trong MLD, Buitrago-Tellez C, Hasler J, Riede U, Weber S, Moor B, Biner M, Fournier S, Gallusser N, Marietan D, Pawlak S, Spormann C, Hansen B, Mamisch N, Durchholz H, Bräm J, Cunningham G, Kourhani A, Ossipow S, Simao P, Lädermann A, Egli R, Erdbrink S, Flückiger R, Lombardo P, Pinworasarn T, Scacchi P, Weihs J, Zumstein M, Flury M, Berther R, Ehrmann C, Hübscher L, Schwappach D, Eid K, Bensler S, Fritz Y, Grünberger N, Kriechling P, Langthaler D, Niehaus R, Nobs R, Benninger E, de Groot Q, Doert A, Ebert S, Grimm P, Mottier F, Pisan M, Schätz J, Schwank A, Wiedenbach J, Scheibel M, Audigé L, Bellmann F, Brune D, de Jong M, Diermayr S, Endell D, Etter M, Freislederer F, Gkikopoulos N, Glanzmann M, Grobet C, Jung C, Moro F, Moroder P, Ringer R, Schätz J, Schwyzer HK, Weber B, Wehrli M, Wirth B, Nötzli M, Franz A, Oswald J, Steiger B, Ameziane Y, Child C, Spagna G, Candrian C, Del Grande F, Feltri P, Filardo G, Marbach F, Schönweger F, Jost B, Badulescu M, Lüscher S, Napieralski F, Öhrström L, Olach M, Rechsteiner J, Scheler J, Spross C, Zdravkovic V, Zumstein MA, Chlasta A, Gerber K, Hayoz A, Müller-Lebschi J, Schuster F, Wieser K, Borbas P, Bouaicha S, Camenzind R, Catanzaro S, Gerber C, Grubhofer F, Hasler A, Hochreiter B, Marcus R, Selman F, Sutter R, Wyss S, Appenzeller-Herzog C, Aghlmandi S, Ahlborn I, Baum C, Eckers F, Grezda K, Hatz S, Hunziker S, Stojanov T, Taha M, Tamborrini-Schütz G, Mueller AM. Functional and Radiologic Outcomes of Degenerative Versus Traumatic Full-Thickness Rotator Cuff Tears Involving the Supraspinatus Tendon. Am J Sports Med 2024; 52:441-450. [PMID: 38259113 PMCID: PMC10838469 DOI: 10.1177/03635465231219253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/02/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Arthroscopic rotator cuff repair (ARCR) is among the most commonly performed orthopaedic procedures. Several factors-including age, sex, and tear severity-have been identified as predictors for outcome after repair. The influence of the tear etiology on functional and structural outcome remains controversial. PURPOSE To investigate the influence of tear etiology (degenerative vs traumatic) on functional and structural outcomes in patients with supraspinatus tendon tears. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Patients undergoing ARCR from 19 centers were prospectively enrolled between June 2020 and November 2021. Full-thickness, nonmassive tears involving the supraspinatus tendon were included. Tears were classified as degenerative (chronic shoulder pain, no history of trauma) or traumatic (acute, traumatic onset, no previous shoulder pain). Range of motion, strength, the Subjective Shoulder Value, the Oxford Shoulder Score (OSS), and the Constant-Murley Score (CMS) were assessed before (baseline) and 6 and 12 months after ARCR. The Subjective Shoulder Value and the OSS were also determined at the 24-month follow-up. Repair integrity after 12 months was documented, as well as additional surgeries up to the 24-month follow-up. Tear groups were compared using mixed models adjusted for potential confounding effects. RESULTS From a cohort of 973 consecutive patients, 421 patients (degenerative tear, n = 230; traumatic tear, n = 191) met the inclusion criteria. The traumatic tear group had lower mean baseline OSS and CMS scores but significantly greater score changes 12 months after ARCR (OSS, 18 [SD, 8]; CMS, 34 [SD,18] vs degenerative: OSS, 15 [SD, 8]; CMS, 22 [SD, 15]) (P < .001) and significantly higher 12-month overall scores (OSS, 44 [SD, 5]; CMS, 79 [SD, 9] vs degenerative: OSS, 42 [SD, 7]; CMS, 76 [SD, 12]) (P≤ .006). At the 24-month follow-up, neither the OSS (degenerative, 44 [SD, 6]; traumatic, 45 [SD, 6]; P = .346) nor the rates of repair failure (degenerative, 14 [6.1%]; traumatic 12 [6.3%]; P = .934) and additional surgeries (7 [3%]; 7 [3.7%]; P = .723) differed between groups. CONCLUSION Patients with degenerative and traumatic full-thickness supraspinatus tendon tears who had ARCR show satisfactory short-term functional results. Although patients with traumatic tears have lower baseline functional scores, they rehabilitate over time and show comparable clinical results 1 year after ARCR. Similarly, degenerative and traumatic rotator cuff tears show comparable structural outcomes, which suggests that degenerated tendons retain healing potential.
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Affiliation(s)
- Cornelia Baum
- Investigation performed at University Hospital Basel, Basel and the Schulthess Klinik, Zurich, Switzerland
| | - Laurent Audigé
- Surgical Outcome Research Center, Department of Clinical Research, University Hospital of Basel, Basel, Switzerland; Research and Development, Shoulder and Elbow Surgery, Schulthess Klinik, Zurich, Switzerland
| | - Thomas Stojanov
- Department of Orthopaedic and Trauma Surgery, University Hospital Basel, Basel, Switzerland; Research and Development, Shoulder and Elbow Surgery, Schulthess Klinik, Zurich, Switzerland
| | - Sebastian A. Müller
- Department of Orthopaedic and Trauma Surgery, Shoulder and Elbow, Cantonal Hospital Baselland, Bruderholz, Switzerland; Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Christian Candrian
- Trauma and Ortho Unit, Ospedale Regionale di Lugano, Lugano, Switzerland
| | | | - Andreas M. Müller
- Department of Orthopaedic and Trauma Surgery, University Hospital Basel, Basel, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Sandra Weber
- Hôpital du Valais–Centre Hospitalier du Valais Romand, Martigny, CH
| | | | | | | | | | | | | | | | | | | | | | - Jakob Bräm
- Hirslanden Clinique la Colline, Geneva, CH
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Larissa Hübscher
- Institute of Social and Preventive Medicine, University of Bern, Bern, CH
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- University Library Basel, University of Basel, Basel, CH
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Bensler S. [Subacromial shoulder impingement]. Radiologie (Heidelb) 2023; 63:771-778. [PMID: 37707546 DOI: 10.1007/s00117-023-01209-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Impingement, especially subacromial impingement, is one of the most frequent causes of shoulder pain. It results in soft tissue pathologies due to constriction of the subacromial space. It can lead to tendon pathologies and bursitis. In addition to the clinical examination, imaging methods such as magnetic resonance imaging (MRI), MRI arthrography, ultrasound and X‑ray examinations are helpful in making a diagnosis or evaluating the cause of pain. Conservative treatment approaches, such as rest, medication, physiotherapy, manual therapy and infiltrations should primarily be used. If the symptoms do not improve after 3-6 months of conservative treatment, surgical treatment should be considered.
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Affiliation(s)
- Susanne Bensler
- Institut für Radiologie, Kantonsspital Baden, Im Ergel 1, 5404, Baden, Schweiz.
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Niehaus R, Hodel S, Eid K, Bensler S, Lenz CG. Plantar Plating in the Modified Lapidus Procedure: Evaluation of Function and Impairment of the Tibialis Anterior Tendon. J Foot Ankle Surg 2022; 61:1203-1208. [PMID: 35307281 DOI: 10.1053/j.jfas.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/07/2022] [Indexed: 02/03/2023]
Abstract
The modified "Lapidus" procedure (MLP) describes the arthrodesis of the first tarsometatarsal joint. We investigate if there are detectable changes of the tendon or the function of the muscle and clinical outcome after MLP. We reviewed 22 feet. All patients underwent magnetic resonance imaging (MRI) at an average of 27 (range, 12-49) months. Clinical outcome was evaluated using the European Foot and Ankle Society score. Strength was measured and complications were assessed. MRI revealed signs of tendinopathy of the tibialis anterior tendon in 13 feet (59%). The mean total European Foot and Ankle Society score at final follow-up was 17 (range, 6-24) points. The mean postoperative Visual Analog Scale score was 1.4 (range, 0-5). Range of motion and force data were not significantly different to the contralateral side. In conclusion, MRI showed signs of tendinopathy in 59%, which does not seem to affect clinical outcome, but has to be considered when choosing the desired implant and placement. MLP leads to high patient satisfaction rates and significant improvement at midterm follow up.
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Affiliation(s)
- Richard Niehaus
- Department of Orthopaedic Surgery, Kantonsspital Baden, Baden, Switzerland
| | - Sandro Hodel
- Department of Orthopaedic Surgery, Kantonsspital Baden, Baden, Switzerland
| | - Karim Eid
- Department of Orthopaedic Surgery, Kantonsspital Baden, Baden, Switzerland
| | - Susanne Bensler
- Department of Radiology, Kantonsspital Baden, Baden, Switzerland
| | - Christopher G Lenz
- Department of Orthopaedic Surgery, Kantonsspital Baden, Baden, Switzerland.
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Azizi S, Urbanschitz L, Bensler S, Lenz CG, Borbas P, Eid K. Structural and Functional Results of Subscapularis and Conjoint Tendon After Latarjet Procedure at 8-Year Average Follow-up. Am J Sports Med 2022; 50:321-326. [PMID: 34935511 DOI: 10.1177/03635465211061599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The Latarjet procedure involves initial dissection through a longitudinal split of the subscapularis tendon with only a final partial closure to accommodate the transferred coracoid bone. Furthermore, by transferring the coracoid bone block to the anterior glenoid, the surgeon completely alters the resting and dynamic route of the attached conjoint tendon. The eventual structural and functional integrity of the subscapularis and conjoint tendons is currently unknown. PURPOSE To examine the structural and functional integrity of the subscapularis and the conjoint tendon after the Latarjet procedure at an 8-year average follow-up. STUDY DESIGN Case series; Level of evidence, 4. METHODS Twenty patients with anterior shoulder instability at a mean age of 30 years (range, 19-50 years) underwent the open Latarjet procedure. Clinical examination at the final follow-up included quantitative isometric measurement of abduction and internal rotation strength compared with the nonoperative side. Patients were assessed via radiograph examination and preoperative computed tomography. Final position and healing of the transferred coracoid bone block were evaluated using standard radiographs. At follow-up, the subscapularis and conjoint tendon were evaluated via magnetic resonance imaging (MRI) with metal artifact reduction techniques and via ultrasound. RESULTS Nineteen of the 20 shoulders remained stable at the final follow-up; there was 1 redislocation (5%) after 14 months. The mean Rowe score was 83 points (SD, 17.9 points), the mean Constant score was 85 points (SD, 8.1 points), and the Subjective Shoulder Value was 80% (SD, 18%). The mean abduction strength of the operative shoulder was 7.41 ± 2.06 kg compared with 8.33 ± 2.53 kg for the nonoperative side (P = .02). The mean internal rotation strength at 0° for the operative shoulder was 8.82 ± 3.47 kg compared with 9.06 ± 3.01 kg for the nonoperative side (P = .36). The mean internal rotation strength in the belly-press position for the operative shoulder was 8.12 ± 2.89 kg compared with 8.50 ± 3.03 kg (P = .13). Four of 20 shoulders showed mild tendinopathic changes of the subscapularis tendon but no partial or complete tear. One patient exhibited fatty degeneration Goutallier stage 1. Conjoint tendon was in continuity in all 20 shoulders on MRI scans. CONCLUSION Abduction, but not internal rotation strength, was slightly reduced after the Latarjet procedure at a mean of 8 years of follow-up. The subscapularis tendon was intact based on ultrasound examination, and the conjoint tendon was intact based on MRI scans. Subscapularis muscle girth relative to the supraspinatus muscle remained intact from preoperative measurements based on MRI scans.
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Affiliation(s)
- Sebastien Azizi
- Department of Orthopedics, Kantonsspital Baden, Baden, Switzerland
| | | | - Susanne Bensler
- Department of Radiology, Kantonsspital Baden, Baden, Switzerland
| | | | | | - Karim Eid
- Department of Orthopedics, Kantonsspital Baden, Baden, Switzerland
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Urbanschitz L, Bensler S, Merat S, Lenz CG, Eid K. How Should We Grade Cervical Disk Degeneration? A Comparison of Two Popular Classification Systems. Spine Surg Relat Res 2021; 5:347-351. [PMID: 34966859 PMCID: PMC8668218 DOI: 10.22603/ssrr.2021-0048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 03/24/2021] [Indexed: 11/09/2022] Open
Abstract
Introduction Despite being originally developed for the evaluation of lumbar disk degeneration, the Pfirrmann classification has emerged as the most popular classification system for cervical disk degeneration. However, with the Suzuki classification, a new classification system that is specifically tailored for the evaluation of cervical disk disease was introduced. In this study, we aim to evaluate differences in inter- and intraobserver reliability of both classifications in a head-to-head comparison. Methods In total, we have evaluated 120 cervical disks within 40 patients via magnetic resonance imaging according to the Pfirrmann and Suzuki classification. The degree of disk degeneration was evaluated by two independent musculoskeletal radiologists. After 6 months, the classification was reassessed to evaluate the intraobserver reliability. The inter- and intraobserver reliabilities were then calculated using Cohen's kappa. Results The inter- and intraobserver reliability provided a significant agreement between all ratings in Pfirrmann as well as the Suzuki classification (p>0.001). The interobserver reliability was determined to be fair in both the Suzuki classification (κ=0.290) and the Pfirrmann classification (κ=0.265). The intraobserver reliability was substantial in the Suzuki classification (κ=0.798), while it was almost perfect in the Pfirrmann classification (κ=0.858). Conclusions Although not designed for the evaluation of cervical disk degeneration, the Pfirrmann classification yielded equal inter- and higher intraobserver reliability. Both classification systems are viable options for the grading of cervical disk degeneration. While the Pfirrmann classification has the advantage of being better established, the Suzuki classification may be clinically superior due to a better representation of cervical disk degeneration and the consideration of disk bulging for the classification of cervical disk degeneration.
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Affiliation(s)
- Lukas Urbanschitz
- Department of Spine Surgery, Cantonal Hospital Baden, Baden, Switzerland
| | - Susanne Bensler
- Department of Radiology, Cantonal Hospital Baden, Baden, Switzerland
| | - Sascha Merat
- Department of Radiology, Cantonal Hospital Baden, Baden, Switzerland
| | | | - Karim Eid
- Department of Orthopaedics, Cantonal Hospital Baden, Baden, Switzerland
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Freislederer F, Bensler S, Specht T, Magerkurth O, Eid K. Plate Fixation for Irreducible Proximal Humeral Fractures in Children and Adolescents-A Single-Center Case Series of Six Patients. Children (Basel) 2021; 8:children8080635. [PMID: 34438526 PMCID: PMC8393487 DOI: 10.3390/children8080635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022]
Abstract
Background: Recommended treatment for severely displaced proximal humeral fractures in children is the closed reduction and percutaneous fixation by K-wires or intramedullary nailing. Methods: From January 2016 to January 2017 6, 21 children/adolescents (range 8 to 16 years) with proximal humeral fractures were treated surgically for severe displacement. In these six patients, several attempts of closed reduction were unsuccessful, and an open reduction was performed. The humeral head was fixed with a 3.5 mm T-plate without affecting the growth plate. Plate removal was performed at a mean interval of 132 days after initial surgery. Two years after initial surgery, the clinical outcome was assessed by the Constant–Murley score and QuickDASH score (including sport/music and work) and the shoulder joint was evaluated with a standardized sonographic examination for the rotator cuff and the conjoint tendon. Results: In all six patients, dorsal displacement of the fracture was irreducible due to the interposition of tendinous or osseous structures. Intraoperatively, the interposed structures were the long biceps tendon in two, periosteal tissue in two, a bony fragment in one, and the long biceps tendon together with the conjoint tendon in one case. At mean follow-up of 26 months (range 22 months to 29 months), patients showed very good clinical results with an excellent mean Constant–Murley score of 97.5 (range 91 to 100) and mean QuickDASH score (including sport/music and work) of 5.5 (range 0–20.8). An X-ray follow-up 6 weeks after surgery demonstrated early consolidation and correct alignment in all patients. A sonographic evaluation at 2 years post injury showed that the biceps and the conjoined tendon were intact in all patients. Conclusions: If a proximal humeral fracture is not reducible by closed means, a tissue entrapment (most likely biceps tendon) should be considered. Treatment with an open reduction and plate fixation yields very good clinical and radiological results and preserves interposed structures as the biceps and conjoint tendon.
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Affiliation(s)
- Florian Freislederer
- Department of Orthopaedics and Traumatology, Kantonsspital Baden (KSB), Im Ergel 1, 5404 Baden, Switzerland;
- Correspondence: (F.F.); (K.E.)
| | - Susanne Bensler
- Unit for Musculoskeletal Radiology, Department of Radiology, Kantonsspital Baden (KSB), Im Ergel 1, 5404 Baden, Switzerland;
| | - Thomas Specht
- Department of Orthopaedics and Traumatology, Kantonsspital Baden (KSB), Im Ergel 1, 5404 Baden, Switzerland;
| | - Olaf Magerkurth
- Unit for Pediatric Radiology, Department of Radiology, Kantonsspital Baden (KSB), Im Ergel 1, 5404 Baden, Switzerland;
| | - Karim Eid
- Department of Orthopaedics and Traumatology, Kantonsspital Baden (KSB), Im Ergel 1, 5404 Baden, Switzerland;
- Correspondence: (F.F.); (K.E.)
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Bensler S, Walde M, Fischer MA, Pfirrmann CWA, Peterson CK, Sutter R. Comparison of treatment outcomes in lumbar disc herniation patients treated with epidural steroid injections: interlaminar versus transforaminal approach. Acta Radiol 2020; 61:361-369. [PMID: 31265320 DOI: 10.1177/0284185119858681] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background The study describes the difference of pain reduction in interlaminar and transforaminal injections. Purpose To compare treatment outcomes after interlaminar versus transforaminal epidural steroid injections in patients with disc herniations at the level L3/4–L5/S1 and analyze associated magnetic resonance imaging (MRI) findings. Material and Methods This retrospective comparative effectiveness outcome study included 198 patients with computed tomography (CT)-guided interlaminar (n = 99) or transforaminal (n = 99) epidural injections with particulate steroids. Pain levels at baseline and one day, one week, and one month after injection were assessed using the 11-point Numerical Rating Scale for Pain. Overall improvement was assessed after one day, one week, and one month using the Patients Global Impression of Change. MRI analysis was performed by two radiologists. Student’s t-test, Chi-square test, and Fisher’s exact test were calculated. Results Baseline pain scores were equal for interlaminar and transforaminal injections (6.23, SD = 2.10 vs. 5.84, SD = 2.02; P = 0.18). There were no significant differences in improvement between the interlaminar and transforaminal approach of epidural steroid injections after one day (30.5% vs. 21.2%, P = 0.432), one week (41.7% vs. 40.8%, P = 1.000), and one month (53.3% vs. 43.9%, P = 0.322), but there was a trend towards better effect of interlaminar injections at one day and one month. The change in Numerical Rating Scale for Pain scores showed no significant differences between the two cohorts after one day, one week, and one month ( P ≥ 0.115). None of the MR findings predicted a better or worse outcome ( P ≥ 0.171). Conclusion Interlaminar and transforaminal injections with particulate corticosteroids were equally effective, with a non-significant advantage of interlaminar injections at one day and one month. None of the MR findings were associated with treatment outcomes.
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Affiliation(s)
- Susanne Bensler
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Melissa Walde
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Michael A Fischer
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Christian WA Pfirrmann
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Cynthia K Peterson
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Reto Sutter
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
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Dietrich TJ, Peterson CK, Zeimpekis KG, Bensler S, Sutter R, Pfirrmann CWA. Fluoroscopy-guided versus CT-guided Lumbar Steroid Injections: Comparison of Radiation Exposure and Outcomes. Radiology 2019; 290:752-759. [DOI: 10.1148/radiol.2018181224] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Tobias J. Dietrich
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
| | - Cynthia K. Peterson
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
| | - Konstantinos G. Zeimpekis
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
| | - Susanne Bensler
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
| | - Reto Sutter
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
| | - Christian W. A. Pfirrmann
- From the Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland (T.J.D., C.K.P., S.B., R.S., C.W.A.P.); Division of Medical Physics, Department of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland (K.G.Z.); and Faculty of Medicine, University of Zurich, Zurich, Switzerland (T.J.D., C.K.P., K.G.Z., S.B., R.S., C.W.A.P.)
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Bensler S, Dietrich TJ, Zubler V, Pfirrmann CWA, Sutter R. Pincer-type MRI morphology seen in over a third of asymptomatic healthy volunteers without femoroacetabular impingement. J Magn Reson Imaging 2018; 49:1296-1303. [PMID: 30318790 DOI: 10.1002/jmri.26297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND In daily routine, pincer femoroacetabular impingement (FAI) findings are often seen without a clinical diagnosis of pincer FAI. PURPOSE To assess the presence of pincer FAI MRI findings in asymptomatic volunteers with negative impingement test versus patients with clinically confirmed FAI. STUDY TYPE Case-control study. POPULATION Sixty-three asymptomatic volunteers and 63 matched patients with FAI were included. FIELD STRENGTH/ SEQUENCE A coronal T1 -weighted turbo spin-echo sequence as well as a 3D oblique transverse water-excitation true fast imaging sequence at 1.5T. ASSESSMENT The volunteers underwent standard MRI of the hip, and patients underwent MR arthrography of the symptomatic hip using the same MR sequences. Measurements of cranial acetabular version, acetabular depth, and lateral center-edge angle were performed independently by three fellowship-trained musculoskeletal radiologists. STATISTICAL TESTS Descriptive statistics, Mann-Whitney U-test, Unpaired t-test, receiver operating characteristics (ROC), Intraclass correlation coefficient (ICC). RESULTS Forty-one percent (26/63, reader 1), 32% and 37% (20 and 23/63, reader 2/3) of asymptomatic volunteers had at least one positive MR finding for pincer-FAI. Patients with pincer or mixed-type FAI had cranial retroversion of the acetabulum of -0.2° ± 7.1 (mean ± standard deviation) for reader 1 and -0.3° ± 5.5/-0.2° ± 4.8 for reader 2 / reader 3, while asymptomatic volunteers had an anteversion of 6.2° ± 6.4 (reader 1) and 3.2° ± 4.9/3.1° ± 6.5 (readers 2/3): This difference was statistically significant (P ≤ 0.002), but there was a large overlap between the groups. Acetabular depth measurements were very similar for patients with either pincer or mixed-type FAI (5.1-5.3 mm ± 3.1) and volunteers (5.2-6.1 mm ± 2.6), without a statistically significant difference (P ≤ 0.50). Lateral center-edge angle was also similar in patients with either pincer or mixed-type FAI (32.1-35.1° ± 9.1) and volunteers (30.7-33.2° ± 6.5), without a statistically significant difference (P ≤ 0.28). DATA CONCLUSION There is a large overlap in pincer-type MRI findings between patients with symptomatic FAI and asymptomatic volunteers. More than a third of volunteers exhibited at least one positive pincer-type MRI finding. LEVEL OF EVIDENCE 1 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:1296-1303.
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Affiliation(s)
- Susanne Bensler
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland.,University of Zurich, Faculty of Medicine, Zurich, Switzerland
| | - Tobias J Dietrich
- University of Zurich, Faculty of Medicine, Zurich, Switzerland.,Radiology and Nuclear Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Veronika Zubler
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland.,University of Zurich, Faculty of Medicine, Zurich, Switzerland
| | - Christian W A Pfirrmann
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland.,University of Zurich, Faculty of Medicine, Zurich, Switzerland
| | - Reto Sutter
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland.,University of Zurich, Faculty of Medicine, Zurich, Switzerland
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10
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Jungmann PM, Gersing AS, Woertler K, Dietrich TJ, Baum T, Baumann F, Bensler S. Reliable semiquantitative whole‐joint MRI score for the shoulder joint: The shoulder osteoarthritis severity (SOAS) score. J Magn Reson Imaging 2018; 49:e152-e163. [DOI: 10.1002/jmri.26251] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/22/2018] [Indexed: 11/06/2022] Open
Affiliation(s)
- Pia M. Jungmann
- Department of NeuroradiologyUniversity Hospital Zurich, University of Zurich Zurich Switzerland
- Department of RadiologyTechnical University of Munich Munich Germany
| | | | - Klaus Woertler
- Department of RadiologyTechnical University of Munich Munich Germany
| | - Tobias J. Dietrich
- Radiology and Nuclear MedicineKantonsspital St. Gallen St. Gallen Switzerland
| | - Thomas Baum
- Department of NeuroradiologyTechnical University of Munich Munich Germany
| | - Frederic Baumann
- Clinical and Interventional AngiologyUniversity Hospital Zurich, University of Zurich Zurich Switzerland
| | - Susanne Bensler
- Institute of RadiologyCantonal Hospital Baden Baden Switzerland
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11
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Agten CA, Margaroli L, Bensler S, Fritz B, Rosskopf AB, Held U, Pfirrmann CWA. Prevalence of vitamin D insufficiency in radiologists: a cross-sectional study. Skeletal Radiol 2018; 47:981-988. [PMID: 29396695 DOI: 10.1007/s00256-018-2896-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/15/2018] [Accepted: 01/18/2018] [Indexed: 02/02/2023]
Abstract
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 measure vitamin D (25-hydroxyvitamin D) blood serum level. Vitamin D insufficiency was defined as < 50 nmol/l (30 ng/ml). We collected information on profession, age, gender, vitamin D supplements, recent sunny vacation, and eating fish. We compared vitamin D between radiologists and non-radiologists. RESULTS A total of 137 radiologists (mean age, 38 ± 10 years) and 164 non-radiologists (mean age, 40 ± 12 years) participated in the study. Prevalence of vitamin D insufficiency in both groups was similar (58.4% (80/137) vs. 53.7% (88/164); p = 0.240). Forty-three participants were under vitamin D supplementation. In those without supplementation, we found no difference in vitamin D between groups (44.0 ± 16.2 nmol/l (17.6 ± 6.5 ng/ml) vs. 44.4 ± 16.9 nmol/l (17.8 ± 6.8 ng/ml); p = 0.757). Average vitamin D levels for radiologists were slightly lower (-0.98 nmol/l (0.39 ng/ml), 95% confidence interval - 5.96 to 4.00 (- 2.38 to 1.6 ng/ml); p = 0.699), when adjusting for the potential confounders, but not statistically significant. The odds ratio of vitamin D insufficiency for radiologists versus non-radiologists was 1.7 (95% CI = 0.94-3.06; p = 0.078) after adjusting for the other independent variables. CONCLUSIONS The prevalence of vitamin D insufficiency in radiologists was high (58.4%), but not substantially higher than in non-radiologists.
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Affiliation(s)
- Christoph Amadeus Agten
- Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland. .,Faculty of Medicine, University of Zurich, Zurich, Switzerland.
| | - Lukas Margaroli
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Susanne Bensler
- Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Benjamin Fritz
- Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Andrea B Rosskopf
- Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Ulrike Held
- Horten Centre, University of Zurich, Zurich, Switzerland
| | - Christian W A Pfirrmann
- Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
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12
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Bensler S, Sutter R, Pfirrmann C, Peterson C. Particulate versus Nonparticulate Corticosteroids for Transforaminal Nerve Root Blocks: Comparison of Outcomes in 494 Patients with Lumbar Radiculopathy. Semin Musculoskelet Radiol 2017. [DOI: 10.1055/s-0037-1598253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Susanne Bensler
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
| | - Reto Sutter
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
| | - Christian Pfirrmann
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
| | - Cynthia Peterson
- Department of Radiology, Orthopedic University Hospital Balgrist, Zurich, Switzerland
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13
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Bensler S, Sutter R, Pfirrmann CWA, Peterson CK. Is there a difference in treatment outcomes between epidural injections with particulate versus non-particulate steroids? Eur Radiol 2016; 27:1505-1511. [PMID: 27436028 DOI: 10.1007/s00330-016-4498-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/28/2016] [Accepted: 06/30/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To compare the outcomes of patients after interlaminar computed tomography (CT)-guided epidural injections of the lumbar spine with particulate vs. non-particulate steroids. METHODS 531 consecutive patients were treated with CT-guided lumbar interlaminar epidural injections with steroids and local anaesthetics. 411 patients received a particulate steroid and 120 patients received a non-particulate steroid. Pain levels were assessed using the 11-point numerical rating scale (NRS) and overall reported 'improvement' was assessed using the Patients Global Impression of Change (PGIC) at 1 day, 1 week and 1 month post-injection. Descriptive and inferential statistics were applied. RESULTS Patients receiving particulate steroids had statistically significantly higher NRS change scores (p = 0.0001 at 1 week; p = 0.0001 at 1 month). A significantly higher proportion of patients receiving particulate steroids reported relevant improvement (PGIC) at both 1 week and 1 month post injection (p = 0.0001) and they were significantly less likely to report worsening at 1 week (p = 0.0001) and 1 month (p = 0.017). CONCLUSION Patients treated with particulate steroids had significantly greater pain relief and were much more likely to report clinically relevant overall 'improvement' at 1 week and 1 month compared to the patients treated with non-particulate steroids. KEY POINTS • CT-guided epidural injections of the lumbar spine with particulate vs. non-particulate steroids. • Good outcomes with particulate steroids. • Less pain relief in patients with non-particulate steroids. • Less improvement in patients with non-particulate steroids.
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Affiliation(s)
- Susanne Bensler
- Department of Radiology, Orthopedic University Hospital Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland. .,Faculty of Medicine, University of Zurich, Pestalozzistrasse 3, 8091, Zurich, Switzerland.
| | - Reto Sutter
- Department of Radiology, Orthopedic University Hospital Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Pestalozzistrasse 3, 8091, Zurich, Switzerland
| | - Christian W A Pfirrmann
- Department of Radiology, Orthopedic University Hospital Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Pestalozzistrasse 3, 8091, Zurich, Switzerland
| | - Cynthia K Peterson
- Department of Radiology, Orthopedic University Hospital Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Pestalozzistrasse 3, 8091, Zurich, Switzerland
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14
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Meyer DC, Zimmermann SM, Wieser K, Bensler S, Gerber C, Germann M. Lengthening of the subscapularis tendon as a sign of partial tearing in continuity. J Shoulder Elbow Surg 2016; 25:31-7. [PMID: 26234662 DOI: 10.1016/j.jse.2015.06.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/14/2015] [Accepted: 06/01/2015] [Indexed: 02/01/2023]
Abstract
BACKGROUND The quantification of a subscapularis tendon lesion may be difficult on magnetic resonance imaging, as well as during arthroscopic inspection. Consequently, the surgical decision of whether to only debride a degenerated tendon or to lateralize the more intact tendon portion may be arbitrary. This study aims to quantify the length of the subscapularis tendon as a sign of partial tendon tearing. METHODS We retrospectively identified 92 magnetic resonance arthrography studies of suspected rotator cuff lesions obtained 3 months before shoulder arthroscopy. The myotendinous junction was identified, and the subscapularis tendon and muscle lengths were measured. Findings on arthroscopy performed later were used as the diagnostic gold standard for tendon integrity and compared with the magnetic resonance data. RESULTS Arthroscopy showed an intact subscapularis tendon in 43 patients, tendinopathy in 21 patients, and a partial rupture in 28 patients. The mean subscapularis tendon lengths were 40 mm in cases of intact subscapularis musculotendinous units, 45 mm in cases of tendinopathy, and 53 mm in cases of partial tears, whereas the mean subscapularis muscle lengths were 105 mm, 94 mm, and 95 mm, respectively, in these groups. CONCLUSION Partial tears of the subscapularis tendon lead to muscle shortening by approximately 10% and elongation of the tendon by approximately 32%, which may be interpreted as muscle retraction and a tendon rupture in continuity. If the subscapularis tendon has an apparent length of greater than 60 mm, the probability of a tear is 98%. Determination of the tendon length may therefore be a useful additional tool to quantify the integrity of the subscapularis tendon and degree of myotendinous retraction.
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Affiliation(s)
- Dominik C Meyer
- Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Zürich, Switzerland.
| | - Stefan M Zimmermann
- Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Karl Wieser
- Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Susanne Bensler
- Department of Radiology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Christian Gerber
- Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Marco Germann
- Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
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15
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Bensler S, Sutter R, Pfirrmann CWA, Peterson CK. Long Term Outcomes from CT-guided Indirect Cervical Nerve Root Blocks and their relationship to the MRI findings- A prospective Study. Eur Radiol 2015; 25:3405-13. [DOI: 10.1007/s00330-015-3758-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 02/25/2015] [Accepted: 03/31/2015] [Indexed: 12/22/2022]
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16
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Szucs-Farkas Z, Bensler S, Torrente JC, Cullmann JL, Vock P, Schindera ST. Nonlinear three-dimensional noise filter with low-dose CT angiography: effect on the detection of small high-contrast objects in a phantom model. Radiology 2010; 258:261-9. [PMID: 21062921 DOI: 10.1148/radiol.10100760] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE To study the effect of a nonlinear noise filter on the detection of simulated endoleaks in a phantom with 80- and 100-kVp multidetector computed tomographic (CT) angiography. MATERIALS AND METHODS An aortic aneurysm phantom, including iodinated endoleaks, was constructed. Multidetector CT angiography with use of 80-, 100-, and 120-kVp tube voltages was performed for simulated intermediate-sized and large patients (estimated body weights, 72-85 kg and 118-142 kg, respectively). Images obtained with 80 and 100 kVp were postprocessed by using a nonlinear noise filter. CT images containing 1152 endoleaks and images with no endoleaks were randomized and independently analyzed by three radiologists blinded to the location of the endoleaks. Diagnostic confidence and image quality were rated by using subjective scales. Analysis of variance was used for statistical assessment. RESULTS In simulated intermediate-sized patients, energy reduction from 120 to 100 kVp and from100 to 80 kVp did not decrease image quality when images with reduced kilovoltage were filtered (P = .2692 and P > .99, respectively). Readers detected more endoleaks on the filtered 100-kVp images than on the nonfiltered images in simulated large patients (83 vs 75 lesions, P = .041). The number of detected endoleaks and the confidence rate were similar at 100 kVp with a filter and at 120 kVp in simulated large patients (P = .339 and P = .211, respectively). CONCLUSION In a phantom, the nonlinear noise filter can prevent decreased image quality with use of 80- and 100-kVp abdominal multidetector CT angiography at a wide range of simulated body weights and may facilitate a better detection rate of endoleaks in heavy patients.
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Affiliation(s)
- Zsolt Szucs-Farkas
- Department of Diagnostic, Interventional, and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010, Switzerland.
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17
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Szucs-Farkas Z, Semadeni M, Bensler S, Patak MA, von Allmen G, Vock P, Schindera ST. Endoleak Detection with CT Angiography in an Abdominal Aortic Aneurysm Phantom: Effect of Tube Energy, Simulated Patient Size, and Physical Properties of Endoleaks. Radiology 2009; 251:590-8. [DOI: 10.1148/radiol.2512081687] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Clevert DA, Bensler S, Stickel M, Horng A, Strautz T, Flach P, Jung EM, Reiser M, Staehler M. Contrast enhanced ultrasound eases interpretation of an unclear renal tumor in addition to CT, MRI and histological findings--a case report in a young patient. Clin Hemorheol Microcirc 2007; 36:313-8. [PMID: 17502701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Renal cancer represents accounts for approximately 3% of all adult malignancies with a rising incidence. Incidental diagnosis is mostly based upon ultrasound (US). US and Computed tomography (CT) are the standard imaging modalities for detecting renal cell cancer (RCC). Differentiation between malignant and benign renal tumors is of utmost importance. Contrast enhanced ultrasound (CUS) seems to be a promising new diagnostic option for diagnosis and preoperative treatment planning for patients with renal cancer. It is an additional examination to baseline ultrasound and CT. We report a case of a 37-year-old woman with a papillary renal cell cancer in which CUS helped to differentiate dignity of the tumor. CUS is an additional examination to baseline ultrasound and CT. It is a less invasive technique than contrast enhanced CT and shows even slight tumor blood flow. In addition it may allow a more rapid diagnosis, because of its bedside availability.
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Affiliation(s)
- D-A Clevert
- Institute of Clinical Radiology, University of Munich-Grosshadern Campus, Munich, Germany.
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Mussack T, Fischer T, Ladurner R, Gangkofer A, Bensler S, Hallfeldt KK, Reiser M, Lienemann A. Cine magnetic resonance imaging vs high-resolution ultrasonography for detection of adhesions after laparoscopic and open incisional hernia repair: a matched pair pilot analysis. Surg Endosc 2005; 19:1538-43. [PMID: 16247569 DOI: 10.1007/s00464-005-0092-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2005] [Accepted: 07/06/2005] [Indexed: 11/25/2022]
Abstract
BACKGROUND Intraabdominal adhesions represent nonspecific complications before or after laparoscopic or open incisional hernia repair. The objective of this matched control pilot study was to display long-term adhesions noninvasively by applying functional cine magnetic resonance (MR) imaging, as compared with applying high-resolution ultrasonography (US). METHODS The study group, composed of 17 consecutive patients (12 men and 5 women; mean age, 52 years), underwent laparoscopic intraperitoneal onlay mesh repair using expanded polytetrafluoroethylene (ePTFE) mesh. Their mean body mass index was 30 kg/m(2), and the size of the hernia was 95 cm(2). Another group, matched for age, gender, and type of hernia, was subjected to open abdominal wall repair using the preperitoneal sublay technique with a large-pore, low-weight polypropylene mesh. For cine MR imaging (1.5 T), section-by-section dynamic depiction of induced visceral slide throughout the entire abdomen was achieved by applying transverse or sagittal true fast imaging with steady-state precession sequences. The location and type of adhesions were compared with high-resolution ultrasonography using nine segments of the abdominal map. RESULTS The patients subjected to laparoscopic and open incisional hernia repair were examined 16 and 28 months after surgery. The findings showed functional cine MR imaging as superior to high-resolution ultrasonography for assessing the amount of intraabdominal adhesions (n = 53 vs n = 3; p < 0.01). Most frequently, adhesions were seen between small bowel loops and the abdominal wall (n = 22), followed by bowel-to-bowel adhesions (n = 19; p < 0.05). However, adhesions between small bowel loops and the abdominal wall occurred more frequently after open mesh repair (p < 0.05). Furthermore, a strong correlation was observed between patient complaints and findings with cine MR imaging (p < 0.05). Maximum pain correlated significantly with the region of the most distinctive adhesions (p < 0.05). CONCLUSIONS Functional cine MR imaging represents a reliable noninvasive technique for detecting long-term adhesions after open and laparoscopic incisional hernia repair. The study results suggest that this approach has distinct advantages over high-resolution ultrasonography.
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Affiliation(s)
- T Mussack
- Department of Surgery Innenstadt, Klinikum der Universität München, Nussbaumstrasse 20, 80336, München, Germany.
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Fischer T, Gangkofer A, Bensler S, Ladurner R, Mussack T, Lienemann A. Beurteilung von implantierten synthetischen Netzen bei Patienten nach Narbenhernienoperation mittels funktioneller Cine-MRT. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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