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Software-based planning of ultrasound and CT-guided percutaneous radiofrequency ablation in hepatic tumors. Int J Comput Assist Radiol Surg 2021; 16:1051-1057. [PMID: 33974224 PMCID: PMC8166805 DOI: 10.1007/s11548-021-02394-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/28/2021] [Indexed: 11/24/2022]
Abstract
Objectives Radiofrequency ablation (RFA) can be associated with local recurrences in the treatment of liver tumors. Data obtained at our center for an earlier multinational multicenter trial regarding an in-house developed simulation software were re-evaluated in order to analyze whether the software was able to predict local recurrences. Methods Twenty-seven RFA ablations for either primary or secondary hepatic tumors were included. Colorectal liver metastases were shown in 14 patients and hepatocellular carcinoma in 13 patients. Overlap of the simulated volume and the tumor volume was automatically generated and defined as positive predictive value (PPV) and additionally visually assessed. Local recurrence during follow-up was defined as gold standard. Sensitivity and specificity were calculated using the visual assessment and gold standard. Results Mean tumor size was 18 mm (95% CI 15–21 mm). Local recurrence occurred in 5 patients. The PPV of the simulation showed a mean of 0.89 (0.84–0.93 95% CI). After visual assessment, 9 incomplete ablations were observed, of which 4 true positives and 5 false positives for the detection of an incomplete ablation. The sensitivity and specificity were, respectively, 80% and 77% with a correct prediction in 78% of cases. No significant correlation was found between size of the tumor and PPV (Pearson Correlation 0.10; p = 0.62) or between PPV and recurrence rates (Pearson Correlation 0.28; p = 0.16). Conclusions The simulation software shows promise in estimating the completeness of liver RFA treatment and predicting local recurrence rates, but could not be performed real-time. Future improvements in the field of registration could improve results and provide a possibility for real-time implementation.
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[Analysis of the quality of life of patients with osteoid osteoma before and after radiofrequency ablation treatment]. Chirurg 2019; 90:851-857. [PMID: 30783725 DOI: 10.1007/s00104-019-0818-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND The aim of this study was to investigate the effectiveness of the treatment of osteoid osteomas (OO) by radiofrequency ablation (RFA). In particular, the recurrence rate and the improvement in the quality of life as assessed by the reduction of pain intensity were evaluated. METHODS Retrospective analysis of 26 patients after RFA of an OO and prospective analysis of 14 patients using a self-developed quality of life questionnaire. The questionnaire, the electronic patient file and the histopathological findings were processed. RESULTS An average of 22 months passed between the first onset of complaints and the causative treatment by RFA. After RFA, there was a significant reduction in pain symptoms and thus an increase in the quality of life. These results confirm that RFA from OO is a safe and efficient treatment procedure. DISCUSSION In order to avoid long-term conservative treatment attempts and to reduce effects on the musculoskeletal system, a timely RFA of OO should be performed after diagnosis.
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Selektive Embolisation aortaler Seitenäste vor EVAR als Strategie zur Verhinderung relevanter Typ 2 Endoleaks. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Stand-alone Auswerte-Tool für CT-Perfusion der Leber. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Patientenselektion und Aufklärung. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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MR-gesteuerte Interventionen an der Prostata. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Prospektiver Vergleich von Bildqualität und Tumordetektion anhand der 3-T Prostata-MRT mit und ohne Verwendung einer Endorektalspule. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Stufenweises Management einer abnormal invasiven Plazenta (Plazenta increta) bei einer Schwangeren mit morbider Adipositas. Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Interventionen nach Lebertransplantation. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Prostatakarzinom: Radiologische Intervention. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Die Entwicklung eines Simulationstools zur klinischen Anwendung bei bildgestützten perkutanen Tumorablationen – das GoSmart-Projekt. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1550782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Prospektiver Nutzen einer Endorektalspule bei der 3-T MRT-Bildgebung und Tumordetektion in der Prostata. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Transrektale Prostatabiopsien in einem konventionellen 3-T MRT – erste klinische Erfahrungen mit einer Navigationsoption. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Value of Endorectal Magnetic Resonance Imaging at 3T for the Local Staging of Prostate Cancer. ROFO-FORTSCHR RONTG 2014; 186:795-802. [DOI: 10.1055/s-0033-1356186] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Evaluation von diffusionsgewichteter MRT, MR-Spektroskopie sowie deren Kombination zur Vorhersage der Tumoraggressivität beim Prostatakarzinom im Vergleich mit dem postoperativ bestimmten Gleason-Scor. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Senkung des Pfortaderdruckes durch proximale Milzarterienembolisation: erste Ergebnisse von Venenverschlussdruckmessungen. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Entwicklung einer komplexen Softwareumgebung für die patientenspezifische Planung und Simulation der Radiofrequenzablation (RFA) von Lebertumoren. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Variabilität von absoluten und normierten ADC-Werten beim Prostatakarzinom in Abhängigkeit vom Einsatz einer Endorektalspule sowie der zur Berechnung herangezogenen b-Werte. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Liver resection for hepatocellular carcinoma in patients without cirrhosis. Br J Surg 2012; 100:130-7. [PMID: 23132620 DOI: 10.1002/bjs.8962] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND Data on liver resection for hepatocellular carcinoma (HCC) without cirrhosis are sparse. The present study was conducted to evaluate the indications and results of liver resection for HCC with regard to safety and efficacy. METHODS Data for patients who had liver resection for HCC without cirrhosis between January 1996 and March 2011 were retrieved retrospectively using a prospective database containing information on all patients who underwent hepatectomy for HCC. Patient and tumour characteristics were analysed for influence on overall and disease-free survival to identify prognostic factors by univariable and multivariable analysis. RESULTS The 1-, 3- and 5-year overall survival rates after resection with curative intent for HCC without cirrhosis were 84, 66 and 50 per cent respectively. Disease-free survival rates were 69, 53 and 42 per cent respectively. The 90-day mortality rate was 4·5 per cent (5 of 110 patients). Surgical radicality and growth pattern of the tumour were independent prognostic factors for overall survival. Disease-free survival after resection with curative intent was independently affected by growth pattern and by the number and size of tumour nodules. CONCLUSION Liver resection for HCC without cirrhosis carries a low perioperative risk and excellent long-term outcome if radical resection is achieved.
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[Acute hip pseudoparalysis with calcific tendinitis at the insertion of the psoas muscle. Case report and first description of an atypical location]. Z Rheumatol 2012; 72:178-83. [PMID: 23076594 DOI: 10.1007/s00393-012-1046-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Calcific tendinitis is a common and widespread disease. It is most common in the rotator cuff especially in the supraspinatus tendon. In some cases it may also involve other locations such as the hips, particularly at the trochanter minor. In particular calcific tendinitis of the iliopsoas muscle tendon has not yet been described. Because of uncharacteristic symptoms and ambiguous diagnostic imaging the differentiation between traumatic, infectious and neoplastic genesis is often difficult. Because of artefacts the typical calcareous spots near the insertions are often underdiagnosed in conventional diagnostic x-ray images. In this case report the differentiation from an infection of the hip was only possible with positron emission tomography computed tomography (PET-CT) imaging and negative microbiological testing of an aspirate. There are various therapy options, such as systemic and local medication, extracorporeal shock wave therapy up to surgery. However, calcific tendinitis is a self-limiting tendinopathy that can be treated with conservative therapy to complete remission in most cases.
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Wertigkeit der diffusionsgewichteten und spektroskopischen MR-Bildgebung für eine Vorhersage der Tumoraggressivität beim Prostatakarzinom. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Milzarterienembolisation mittels VascularPlug bei splenic artery steal syndrome (SASS) nach Lebertransplantation. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Experimentelle Evaluierung eines Verfahrens zur kontinuierlichen 3D-Lokalisation intravaskulärer Katheter in einem Gefäßphantom. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0031-1300913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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25
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[Posttraumatic high flow priapism: successful treatment with superselective embolization]. ROFO-FORTSCHR RONTG 2011; 184:147-8. [PMID: 22033848 DOI: 10.1055/s-0031-1281799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Liver transplantation to treat suspected hepatocellular carcinoma in iron-free foci in congenital hemochromatosis: case report. Transplant Proc 2011; 43:2066-9. [PMID: 21693327 DOI: 10.1016/j.transproceed.2011.02.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 01/28/2011] [Accepted: 02/14/2011] [Indexed: 01/11/2023]
Abstract
Hepatocellular carcinoma (HCC) commonly develops in cirrhotic or noncirrhotic livers affected by congenital hemochromatosis. In patients with congenital hemochromatosis and HCC, liver transplantation is a therapeutic option with a 5-year posttransplantation survival rate as high as 80%. Herein is reported congenital hemochromatosis in a 37-year-old man. During a routine checkup, 2 liver nodules were detected. Signal characteristics at magnetic resonance imaging indicated the presence of iron-free foci (IFF). The serum α-fetoprotein concentration was within the range of normal, and repeated liver biopsy did not show histomorphologic signs of malignancy but confirmed the presence of IFF in surrounding siderosis. The patient was listed for liver transplantation with match MELD (Model of End-Stage Liver Disease including exceptions) because of suspected HCC. After 173 days on the waiting list, liver transplantation was performed successfully. Histologic examination of the explanted liver confirmed 2 HCC lesions with a diameter of 0.9 cm in the exact projection as the IFF detected at magnetic resonance imaging. At 20 months of rapamycin-based immunosuppression therapy, there were no signs of HCC recurrence. This is, to our knowledge, the first report of liver transplantation performed to treat suspected HCC based on the finding of IFF in congenital hemochromatosis, with histopathologic confirmation of the diagnosis of HCC after transplantation. According to this case and the current literature, IFF in patients with congenital hemochromatosis should be considered preneoplastic lesions vulnerable to possible development of HCC.
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Grundlagen zu einer endorektalen MR-Elastographie der Prostata. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Multiparametrische MR-Bildgebung der Prostata bei 3 Tesla. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Flexibles Konzept zur MR-kontrollierten Navigation mit Echtzeit-Instrumentverfolgung aus beliebigen Kamerapositionen. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Diagnostischer Wert des ADCs bei Patienten mit Prostatakarzinom: Einfluss der Wahl verschiedener b-Werte. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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A Pulsating Buttock Mass as a Rare Presentation of a Persistent Sciatic Artery. Eur J Vasc Endovasc Surg 2010. [DOI: 10.1016/j.ejvs.2010.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Eignung von induktiv gekoppelten Miniaturspulen als MR-sichtbare Marker bei 1.5T. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1253006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Eignung von drahtlosen MR-Markern für intravaskuläre Anwendungen: Erwärmung eines Modellkatheters in einem durchflossenen Gefäßphantom. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1253012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Wertigkeit der C-Bogen-Computertomographie (CB-CT) nach lipiodolunterstützter transarterieller Chemoembolisation (TACE) der Leber. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Navigationslösung für MR-gestützte Interventionen in einem geschlossenen MRT. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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36
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Erste Erfahrungen mit navigierten Radiofrequenzablationen der Leber in einem geschlossenen 1,5T-MRT. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Dynamische Positionsbestimmung eines robotischen Manipulators für Interventionen in einem geschlossenen MRT: Methode und erste Ergebnisse. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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Leberbiopsien mit einem robotischen Assistenzsystem im 1.5T MRT. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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39
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Experimentelle Evaluierung eines Verfahrens zur kontinuierlichen 3D-Lokalisation intravaskulärer Katheter in einem Gefäßphantom. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Towards a software based PET/MR: A new approach for highly accurate registration of PET and MRI scull base to inguinal imaging. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Absolute Genauigkeit und Geschwindigkeit einer morphologischen Bildanalyse zur 3D Verfolgung MR-sichtbarer Marker: Ergebnisse aus Experiment und Simulation. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Verfahren zur Erkennung der 3D-Position und räumlichen Ausrichtung von MR sichtbaren Markern bei der interventionellen MR-Bildgebung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Experimentelle Evaluierung eines Verfahrens zur kontinuierlichen 3D-Lokalisation intravaskulärer Katheter in einem Gefäßphantom. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1208338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Strahlenexposition bei der 3D-Rotationsangiographie der Leber mittels Flachdetektor. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Erste klinische Erfahrungen mit einem robotischen Assistenzsystem für perkutane Eingriffe im geschlossenen 1,5T MRT. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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46
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Machbarkeit und Genauigkeit eines neuartigen Verfahrens zur Erkennung von MR-Referenzmarkern zur Anwendung bei MR-geführten Interventionen. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Perkutane Extraktion intravasaler Fremdkörper. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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[Matrix metalloproteinases and their inhibitors in lung cancer with malignant pleural effusion]. Pneumologie 2005; 59:523-8. [PMID: 16110415 DOI: 10.1055/s-2005-870966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
UNLABELLED Matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP) play a crucial role in physiological and pathological matrix turnover. This study aimed to determine the occurrence of MMP and TIMP in lung cancer patients with malignant pleural effusions (CA). METHODS MMP-1, MMP-2, MMP-3, MMP-8, MMP-9, TIMP-1, and IMP-2 oncentrations were determined by ELISA and zymography in pleural effusions and plasma of 31 CA and 14 congestive heart failure (CHF) patients and in plasma of 18 healthy controls (CON). RESULTS MMP-2, TIMP-1, and TIMP-2 ELISA-concentrations were increased in CA pleural fluid vs. CA plasma (p < 0.005, p < 0.005, p < 0.05), in contrast to MMP-9 being higher in plasma (p < 0.005). Pleural fluid MMP-1 and MMP-8 were increased in CA vs. CHF (p < 0.05, p < 0.005). MMP and TIMP plasma concentrations were not different in CA vs. CHF, but MMP-9, TIMP-1, and TIMP-2 were increased vs. CON (p < 0.005, each). Gelatine zymography MMP-9/MMP-2 ratios were increased in CA plasma vs. effusion fluid (p < 0.005), in CA vs. CHF plasma, CA vs. CHF effusions (p < 0.005 each), and in CA vs. CON plasma (p < 0.05). CONCLUSIONS MMP-2, TIMP-1, and TIMP-2 accumulate in the pleural compartment in CA and CHF, probably reflecting an unspecific pleural reaction. MMP-1 and MMP-8 are increased in cellular rich CA pleural effusions only. The determination of MMP-9/MMP-2 ratios in pleural fluid may contribute to differentiate CHF from CA effusions.
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Abstract
INTRODUCTION MR-guided interventions have been successful in different medical disciplines. The aim of this paper is to report our results with the application of MR-guided biopsies of musculoskeletal lesions using an open 0.5-T-MR scanner and further to discuss these results on the basis of the available literature. PATIENTS AND METHODS Between 1998 and 2003 30 patients (average age 44.1 years) underwent a total of 31 biopsies. The interventions were performed in an open 0.5-T MRI system using an active optical localization system as well as a navigation system. For the motion tracking we used T (1)-weighted real-time sequences with 0.25 pictures per second. For the sampling MR-compatible instruments were used that were specially developed for this purpose. The data of this retrospective investigation are based on the evaluation of the patient documents and the radiological findings. On the basis of the histological findings the technical success rate and the histological overall accuracy were determined. RESULTS In 81 % of the biopsies the histological diagnosis was correct. In cases of suspected inflammation the histological accuracy was smaller (70 %). No differences were observed between skeletal and soft-tissue lesions. The technical success rate amounted to 77.5 %. No procedural or anesthesiological complications occurred. The mean operating time amounted to 65 min including the time for motion tracking. DISCUSSION In cases of suspected lesions of the musculoskeletal system, the MR-guided biopsy represents a promising and safe procedure to get a histological diagnosis. In cases of sufficient size of the lesion sampling of a representative probe is possible. On account of the outstanding performance in soft-part contrasting, the sensitive structures surrounding the lesion can be saved. Substantial disadvantages of the procedure are the high costs for personal and material and the long operating time.
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MRT-Interventionen bei Kindern. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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