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  1. Article: Cyberknife Radiosurgery for Trigeminal Neuralgia.

    Romanelli, Pantaleo / Conti, Alfredo / Redaelli, Irene / Martinotti, Anna Stefania / Bergantin, Achille / Bianchi, Livia Corinna / Beltramo, Giancarlo

    Cureus

    2019  Volume 11, Issue 10, Page(s) e6014

    Abstract: Introduction Image-guided robotic radiosurgery is an emerging minimally-invasive treatment option for trigeminal neuralgia (TN). Our group has treated 560 cases up to date, and report here the clinical outcomes of 387 treatments with three years follow- ... ...

    Abstract Introduction Image-guided robotic radiosurgery is an emerging minimally-invasive treatment option for trigeminal neuralgia (TN). Our group has treated 560 cases up to date, and report here the clinical outcomes of 387 treatments with three years follow-up. This study represents the largest single-center experience on CyberKnife radiosurgery for the treatment of TN so far reported. Methods CyberKnife radiosurgery treatment was offered to patients with drug-resistant TN, after the failure of other treatments or refusal of invasive procedures. A second treatment was offered to patients with a poor response after the first treatment or with recurrent pain. Treatment protocol required the non-isocentric delivery of 60 Gy prescribed to the 80% isodose to a 6 mm retrogasserian segment of the affected trigeminal nerve. Retreatments typically received 45 Gy, again prescribed to the 80% isodose. The final plan was developed accordingly to individual anatomy and dose distribution over the trigeminal nerve, gasserian ganglion, and brainstem. Clinical outcomes such as pain control and hypoesthesia/numbness have been evaluated after 6, 12, 24, and 36 months.  Results Our group has treated 527 patients with Cyberknife radiosurgery at Centro Diagnostico Italiano (CDI), Milan, Italy, during the last decade. A minimum follow-up of six months was available on 496 patients. These patients received 560 treatments: 435 patients (87.7%) had a single treatment, 60 patients (12.1%) had two treatments, and one patient (0.2%) had five treatments (two on the right side, three on the left side). Twenty four patients had multiple sclerosis (4.8%). Four hundred and forty-three patients (84%) received the treatment without previous procedures, while 84 patients (16%) underwent radiosurgery after the failure of other treatments. A neurovascular conflict was identified in 59% of the patients. Three hundred and forty-three patients (receiving a total of 387 treatments) had a minimum of 36 months follow up. Pain relief rate at 6, 12, 18, 24, 30 and 36 months was respectively 92, 87, 87, 82, 78 and 76%. Forty-four patients out of 343 (12.8%) required a second treatment during the observed period. At 36 months post-treatment, 21 patients (6,1%) reported the presence of bothering facial hypoesthesia. Eighteen patients out of 21 (85.7%) developed this complication after a repeated treatment.  Conclusions Frameless image-guided robotic radiosurgery in experienced hands is a safe and effective procedure for the treatment of TN, providing excellent pain control rates in the absence of major neurological complications. Repeated treatments due to recurrent pain are associated with restored pain control but at the price of a higher rate of sensory complications.
    Language English
    Publishing date 2019-10-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.6014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Multi-site evaluation of the Razor stereotactic diode for CyberKnife small field relative dosimetry.

    Russo, Serenella / Masi, Laura / Francescon, Paolo / Dicarolo, Paolo / De Martin, Elena / Frassanito, Cristina / Redaelli, Irene / Vigorito, Sabrina / Stasi, Michele / Mancosu, Pietro

    Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)

    2019  Volume 65, Page(s) 40–45

    Abstract: Purpose: The aims of this study were: (i) to validate in a multi-site context the suitability of the IBA Razor silicon diode detector for CyberKnife relative dosimetry. (ii) to fit the multi-center experimental data into a function relating the field ... ...

    Abstract Purpose: The aims of this study were: (i) to validate in a multi-site context the suitability of the IBA Razor silicon diode detector for CyberKnife relative dosimetry. (ii) to fit the multi-center experimental data into a function relating the field output factors to the effective field size (EFS).
    Methods and materials: Ratio of detector readings in clinical and reference field (OF
    Results: Differences between Razor and PTW60017 Ω
    Conclusions: The results confirmed the suitability of Razor detector for CyberKnife dosimetry by comparison to the PTW 60017 diode which has been well characterized and is in widespread use. The proposed mathematical relation between Ω
    MeSH term(s) Animals ; Electrical Equipment and Supplies ; Particle Accelerators ; Radiometry/instrumentation ; Radiosurgery/instrumentation ; Silicon
    Chemical Substances Silicon (Z4152N8IUI)
    Language English
    Publishing date 2019-08-12
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 1122650-x
    ISSN 1724-191X ; 1120-1797
    ISSN (online) 1724-191X
    ISSN 1120-1797
    DOI 10.1016/j.ejmp.2019.07.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Localization accuracy of robotic radiosurgery in 1-view tracking.

    Bresolin, Andrea / Beltramo, Giancarlo / Bianchi, Livia Corinna / Bonfanti, Paolo / Eulisse, Marco / Fovanna, Damiano / Maldera, Arcangela / Martinotti, Anna Stefania / Papa, Sergio / Redaelli, Irene / Rocco, Domenico / Secondi, Gianluca / Zanetti, Isa Bossi / Bergantin, Achille

    Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)

    2019  Volume 59, Page(s) 47–54

    Abstract: Purpose: When a lung lesion is detected by only one couple of X-ray tube and image detector integrated with CyberKnife®, the fiducial-less tracking is limited to 1-view (34% of lung treatments at Centro Diagnostico Italiano). The aim of the study was ... ...

    Abstract Purpose: When a lung lesion is detected by only one couple of X-ray tube and image detector integrated with CyberKnife®, the fiducial-less tracking is limited to 1-view (34% of lung treatments at Centro Diagnostico Italiano). The aim of the study was mainly to determine the margin needed to take into account the localization uncertainty along the blind view (out-of-plane direction).
    Methods: 36 patients treated in 2-view tracking modality (127 fractions in total) were included in the study. The actual tumor positions were determined retrospectively through logfile analysis and were projected onto 2D image planes. In the same plots the planned target positions based on biphasic breath-hold CT scans were represented preserving the metric with respect to the imaging center. The internal margin necessary to cover in out-of-plane direction the 95% of the target position distribution in the 95% of cases was calculated by home-made software in Matlab®. A validation test was preliminarily performed using XLT Phantom (CIRS) both in 2-view and 1-view scenarios.
    Results: The validation test proved the reliability of the method, in spite of some intrinsic limitations. Margins were estimated equal to 5 and 6 mm for targets in upper and lower lobe respectively. Biphasic breath-hold CT led to underestimate the target movement in the hypothetical out-of-plane direction. The inter-fractional variability of spine-target distance was an important source of uncertainty for 1-view treatments.
    Conclusion: This graphic comparison method preserving metric could be employed in the clinical workflow of 1-view treatments to get patient-related information for customized margin definition.
    MeSH term(s) Breath Holding ; Dose Fractionation, Radiation ; Humans ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/physiopathology ; Lung Neoplasms/radiotherapy ; Phantoms, Imaging ; Radiosurgery ; Retrospective Studies ; Robotic Surgical Procedures ; Tomography, X-Ray Computed ; Uncertainty
    Language English
    Publishing date 2019-02-27
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 1122650-x
    ISSN 1724-191X ; 1120-1797
    ISSN (online) 1724-191X
    ISSN 1120-1797
    DOI 10.1016/j.ejmp.2019.02.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: CyberKnife beam output factor measurements: A multi-site and multi-detector study.

    Masi, Laura / Russo, Serenella / Francescon, Paolo / Doro, Raffaela / Frassanito, Maria Cristina / Fumagalli, Maria Luisa / Reggiori, Giacomo / Marinelli, Marco / Redaelli, Irene / Pimpinella, Maria / Verona Rinati, Gianluca / Siragusa, Carmelo / Vigorito, Sabrina / Mancosu, Pietro

    Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)

    2016  Volume 32, Issue 12, Page(s) 1637–1643

    Abstract: Purpose: New promising detectors are available for measuring small field size output factors (OFs). This study focused on a multicenter evaluation of two new generation detectors for OF measurements on CyberKnife systems.: Methods: PTW-60019 ... ...

    Abstract Purpose: New promising detectors are available for measuring small field size output factors (OFs). This study focused on a multicenter evaluation of two new generation detectors for OF measurements on CyberKnife systems.
    Methods: PTW-60019 microDiamond and W1 plastic scintillation detector (PSD) were used to measure OFs on eight CyberKnife units of various generations for 5-60mm fixed cones. MicroDiamond and PSD OF were compared to routinely used silicon diodes data corrected applying published Monte Carlo (MC) factors. PSD data were corrected for Čerenkov Light Ratio (CLR). The uncertainties related to CLR determination were estimated.
    Results: Considering OF values averaged over all centers, the differences between MC corrected diode and the other two detectors were within 1.5%. MicroDiamond exhibited an over-response of 1.3% at 7.5mm and a trend inversion at 5mm with a difference of 0.2%. This behavior was consistent among the different units. OFs measured by PSD slightly under-responded compared to MC corrected diode for the smaller cones and the differences were within 1%. The observed CLR variability was 2.5% and the related variation in OF values was 1.9%.
    Conclusion: This study indicates that CyberKnife microDiamond OF require corrections below 2%. The results are enhanced by the consistency observed among different units. Scintillator shows a good agreement to MC corrected diode but CLR determination remains critical requiring further investigations. The results emphasized the value of a multi-center validation over a single center approach.
    MeSH term(s) Diamond ; Monte Carlo Method ; Radiosurgery/instrumentation ; Radiosurgery/methods
    Chemical Substances Diamond (7782-40-3)
    Language English
    Publishing date 2016-12
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 1122650-x
    ISSN 1724-191X ; 1120-1797
    ISSN (online) 1724-191X
    ISSN 1120-1797
    DOI 10.1016/j.ejmp.2016.08.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Multi-institutional application of Failure Mode and Effects Analysis (FMEA) to CyberKnife Stereotactic Body Radiation Therapy (SBRT).

    Veronese, Ivan / De Martin, Elena / Martinotti, Anna Stefania / Fumagalli, Maria Luisa / Vite, Cristina / Redaelli, Irene / Malatesta, Tiziana / Mancosu, Pietro / Beltramo, Giancarlo / Fariselli, Laura / Cantone, Marie Claire

    Radiation oncology (London, England)

    2015  Volume 10, Page(s) 132

    Abstract: Background: A multidisciplinary and multi-institutional working group applied the Failure Mode and Effects Analysis (FMEA) approach to assess the risks for patients undergoing Stereotactic Body Radiation Therapy (SBRT) treatments for lesions located in ... ...

    Abstract Background: A multidisciplinary and multi-institutional working group applied the Failure Mode and Effects Analysis (FMEA) approach to assess the risks for patients undergoing Stereotactic Body Radiation Therapy (SBRT) treatments for lesions located in spine and liver in two CyberKnife® Centres.
    Methods: The various sub-processes characterizing the SBRT treatment were identified to generate the process trees of both the treatment planning and delivery phases. This analysis drove to the identification and subsequent scoring of the potential failure modes, together with their causes and effects, using the risk probability number (RPN) scoring system. Novel solutions aimed to increase patient safety were accordingly considered.
    Results: The process-tree characterising the SBRT treatment planning stage was composed with a total of 48 sub-processes. Similarly, 42 sub-processes were identified in the stage of delivery to liver tumours and 30 in the stage of delivery to spine lesions. All the sub-processes were judged to be potentially prone to one or more failure modes. Nineteen failures (i.e. 5 in treatment planning stage, 5 in the delivery to liver lesions and 9 in the delivery to spine lesions) were considered of high concern in view of the high RPN and/or severity index value.
    Conclusions: The analysis of the potential failures, their causes and effects allowed to improve the safety strategies already adopted in the clinical practice with additional measures for optimizing quality management workflow and increasing patient safety.
    MeSH term(s) Healthcare Failure Mode and Effect Analysis ; Humans ; Italy ; Liver Neoplasms/surgery ; Medical Errors ; Patient Safety ; Postoperative Complications/epidemiology ; Postoperative Complications/etiology ; Radiosurgery/adverse effects ; Radiosurgery/instrumentation ; Risk ; Spinal Neoplasms/surgery ; Treatment Failure
    Language English
    Publishing date 2015-06-13
    Publishing country England
    Document type Journal Article ; Multicenter Study
    ISSN 1748-717X
    ISSN (online) 1748-717X
    DOI 10.1186/s13014-015-0438-0
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  6. Article ; Online: Simultaneous liver iron and fat measures by magnetic resonance imaging in patients with hyperferritinemia.

    Galimberti, Stefania / Trombini, Paola / Bernasconi, Davide Paolo / Redaelli, Irene / Pelucchi, Sara / Bovo, Giorgio / Di Gennaro, Filiberto / Zucchini, Nicola / Paruccini, Nicoletta / Piperno, Alberto

    Scandinavian journal of gastroenterology

    2015  Volume 50, Issue 4, Page(s) 429–438

    Abstract: Objective: Hyperferritinemia is frequent in chronic liver diseases of any cause, but the extent to which ferritin truly reflects iron stores is variable. In these patients, both liver iron and fat are found in variable amount and association. Liver ... ...

    Abstract Objective: Hyperferritinemia is frequent in chronic liver diseases of any cause, but the extent to which ferritin truly reflects iron stores is variable. In these patients, both liver iron and fat are found in variable amount and association. Liver biopsy is often required to quantify liver fat and iron, but sampling variability and invasiveness limit its use. We aimed to assess single breath-hold multiecho magnetic resonance imaging (MRI) for the simultaneous lipid and iron quantification in patients with hyperferritinemia.
    Material and methods: We compared MRI results for both iron and fat with their respective gold standards - liver iron concentration and computer-assisted image analysis for steatosis on biopsy. We prospectively studied 67 patients with hyperferritinemia and other 10 consecutive patients were used for validation. We estimated two linear calibration equations for the prediction of iron and fat based on MRI. The agreement between MRI and biopsy was evaluated.
    Results: MRI showed good performances in both the training and validation samples. MRI information was almost completely in line with that obtained from liver biopsy.
    Conclusion: Single breath-hold multiecho MRI is an accurate method to obtain a valuable measure of both liver iron and steatosis in patients with hyperferritinemia.
    MeSH term(s) Adipose Tissue ; Biopsy ; Fatty Liver/pathology ; Female ; Humans ; Iron/analysis ; Iron/blood ; Liver/chemistry ; Liver/pathology ; Magnetic Resonance Imaging/methods ; Male ; Middle Aged ; Prospective Studies
    Chemical Substances Iron (E1UOL152H7)
    Language English
    Publishing date 2015-04
    Publishing country England
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
    ZDB-ID 82042-8
    ISSN 1502-7708 ; 0036-5521
    ISSN (online) 1502-7708
    ISSN 0036-5521
    DOI 10.3109/00365521.2014.940380
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Lung stereotactic ablative body radiotherapy: A large scale multi-institutional planning comparison for interpreting results of multi-institutional studies.

    Giglioli, Francesca Romana / Strigari, Lidia / Ragona, Riccardo / Borzì, Giuseppina R / Cagni, Elisabetta / Carbonini, Claudia / Clemente, Stefania / Consorti, Rita / El Gawhary, Randa / Esposito, Marco / Falco, Maria Daniela / Fedele, David / Fiandra, Christian / Frassanito, Maria Cristina / Landoni, Valeria / Loi, Gianfranco / Lorenzini, Elena / Malisan, Maria Rosa / Marino, Carmelo /
    Menghi, Enrico / Nardiello, Barbara / Nigro, Roberta / Oliviero, Caterina / Pastore, Gabriella / Quattrocchi, Mariagrazia / Ruggieri, Ruggero / Redaelli, Irene / Reggiori, Giacomo / Russo, Serenella / Villaggi, Elena / Casati, Marta / Mancosu, Pietro

    Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)

    2016  Volume 32, Issue 4, Page(s) 600–606

    Abstract: Purpose: A large-scale multi-institutional planning comparison on lung cancer SABR is presented with the aim of investigating possible criticism in carrying out retrospective multicentre data analysis from a dosimetric perspective.: Methods: Five CT ... ...

    Abstract Purpose: A large-scale multi-institutional planning comparison on lung cancer SABR is presented with the aim of investigating possible criticism in carrying out retrospective multicentre data analysis from a dosimetric perspective.
    Methods: Five CT series were sent to the participants. The dose prescription to PTV was 54Gy in 3 fractions of 18Gy. The plans were compared in terms of PTV-gEUD2 (generalized Equivalent Uniform Dose equivalent to 2Gy), mean dose to PTV, Homogeneity Index (PTV-HI), Conformity Index (PTV-CI) and Gradient Index (PTV-GI). We calculated the maximum dose for each OAR (organ at risk) considered as well as the MLD2 (mean lung dose equivalent to 2Gy). The data were stratified according to expertise and technology.
    Results: Twenty-six centers equipped with Linacs, 3DCRT (4% - 1 center), static IMRT (8% - 2 centers), VMAT (76% - 20 centers), CyberKnife (4% - 1 center), and Tomotherapy (8% - 2 centers) collaborated. Significant PTV-gEUD2 differences were observed (range: 105-161Gy); mean-PTV dose, PTV-HI, PTV-CI, and PTV-GI were, respectively, 56.8±3.4Gy, 14.2±10.1%, 0.70±0.15, and 4.9±1.9. Significant correlations for PTV-gEUD2 versus PTV-HI, and MLD2 versus PTV-GI, were observed.
    Conclusions: The differences in terms of PTV-gEUD2 may suggest the inclusion of PTV-gEUD2 calculation for retrospective data inter-comparison.
    MeSH term(s) Carcinoma, Non-Small-Cell Lung/diagnostic imaging ; Carcinoma, Non-Small-Cell Lung/radiotherapy ; Humans ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/radiotherapy ; Radiosurgery/instrumentation ; Radiosurgery/methods ; Radiotherapy Planning, Computer-Assisted/methods ; Tomography, X-Ray Computed/methods
    Language English
    Publishing date 2016-04
    Publishing country Italy
    Document type Clinical Trial ; Comparative Study ; Journal Article ; Multicenter Study
    ZDB-ID 1122650-x
    ISSN 1724-191X ; 1120-1797
    ISSN (online) 1724-191X
    ISSN 1120-1797
    DOI 10.1016/j.ejmp.2016.03.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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