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Anneveldt KJ, Verpalen IM, Nijholt IM, Dijkstra JR, van den Hoed RD, Van't Veer-Ten Kate M, de Boer E, van Osch JAC, Heijman E, Naber HR, Ista E, Franx A, Veersema S, Huirne JAF, Schutte JM, Boomsma MF. Lessons learned during implementation of MR-guided High-Intensity Focused Ultrasound treatment of uterine fibroids. Insights Imaging 2021; 12:188. [PMID: 34921657 PMCID: PMC8684568 DOI: 10.1186/s13244-021-01128-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 11/11/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although promising results have been reported for Magnetic Resonance image-guided High-Intensity Focused Ultrasound (MR-HIFU) treatment of uterine fibroids, this treatment is not yet widely implemented in clinical practice. During the implementation of a new technology, lessons are learned and an institutional learning-curve often has to be completed. The primary aim of our prospective cohort study was to characterize our learning-curve based on our clinical outcomes. Secondary aims included identifying our lessons learned during implementation of MR-HIFU on a technical, patient selection, patient counseling, medical specialists and organizational level. RESULTS Our first seventy patients showed significant symptom reduction and improvement of quality of life at 3, 6 and 12 months after MR-HIFU treatment compared to baseline. After the first 25 cases, a clear plateau phase was reached in terms of failed treatments. The median non-perfused volume percentage of these first 25 treatments was 44.6% (range: 0-99.7), compared to a median of 74.7% (range: 0-120.6) for the subsequent treatments. CONCLUSIONS Our findings describe the learning-curve during the implementation of MR-HIFU and include straightforward suggestions to shorten learning-curves for future users. Moreover, the lessons we learned on technique, patient selection, patient counseling, medical specialists and organization, together with the provided supplements, may be of benefit to other institutions aiming to implement MR-HIFU treatment of uterine fibroids. Trial registration ISRCTN14634593. Registered January 12, 2021-Retrospectively registered, https://www.isrctn.com/ISRCTN14634593 .
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Affiliation(s)
- K J Anneveldt
- Department of Radiology, Isala Hospital, Zwolle, The Netherlands. .,Department of Gynecology, Isala Hospital, Zwolle, The Netherlands.
| | - I M Verpalen
- Department of Radiology, Amsterdam University Medical Center, location AMC, Amsterdam, The Netherlands
| | - I M Nijholt
- Department of Radiology, Isala Hospital, Zwolle, The Netherlands
| | - J R Dijkstra
- Department of Gynecology, Isala Hospital, Zwolle, The Netherlands
| | - R D van den Hoed
- Department of Radiology, Isala Hospital, Zwolle, The Netherlands
| | | | - E de Boer
- Department of Radiology, Isala Hospital, Zwolle, The Netherlands
| | - J A C van Osch
- Department of Medical Physics, Isala Hospital, Zwolle, The Netherlands
| | - E Heijman
- Department of Diagnostic and Interventional Radiology, University of Cologne, Cologne, Germany.,Department of Oncology, Philips Research Eindhoven, Eindhoven, The Netherlands
| | - H R Naber
- Department of Anesthesiology, Isala Hospital, Zwolle, The Netherlands
| | - E Ista
- Department of Internal Medicine, Section of Nursing Science, Erasmus Medical Center, Rotterdam, The Netherlands
| | - A Franx
- Department of Obstetrics and Gynecology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - S Veersema
- Department of Reproductive Medicine and Gynecology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - J A F Huirne
- Department of Gynecology, Amsterdam University Medical Center, location AMC, Amsterdam, The Netherlands
| | - J M Schutte
- Department of Gynecology, Isala Hospital, Zwolle, The Netherlands
| | - M F Boomsma
- Department of Radiology, Isala Hospital, Zwolle, The Netherlands
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de Boer E, Nijholt IM, Jansen S, Edens MA, Walen S, van den Berg JWK, Boomsma MF. Optimization of pulmonary emphysema quantification on CT scans of COPD patients using hybrid iterative and post processing techniques: correlation with pulmonary function tests. Insights Imaging 2019; 10:102. [PMID: 31591646 PMCID: PMC6779684 DOI: 10.1186/s13244-019-0776-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 08/09/2019] [Indexed: 11/17/2022] Open
Abstract
Objectives The aim of this study was to assess the effect of hybrid iterative reconstruction and post processing on emphysema quantification in low-dose CT scans of COPD patients using pulmonary function tests (PFT) as a reference. Methods CT scans of 23 COPD patients diagnosed with GOLD I or higher were reconstructed with iDose4 level 1 to 7 in IntelliSpace Portal (ISP) 6 and 7. ISP7 was used with and without specific denoising filter for COPD. The extent of emphysema was measured as percentage of lung voxels with attenuation < − 950 Hounsfield units (%LAA-950). The correlation between %LAA-950 and PFT, age, BMI, pack years, and the Clinical COPD Questionnaire (CCQ) and Medical Research Council dyspnea scale (MRC) was determined. Results Denoising significantly reduced %LAA-950 as was demonstrated by lower %LAA-950 in ISP7 with denoising filter and a significant reduction in %LAA-950 with higher iDose4 levels. All PFT except forced vital capacity (FVC) were significantly inversely correlated with %LAA-950. There was a trend toward a stronger correlation at higher iDose4 levels. %LAA-950 was also significantly correlated with BMI, GOLD class, and CCQ scores. Conclusions Our study showed that hybrid iterative reconstruction and use of post processing denoising can optimize the use of emphysema quantification in CT scans as a complimentary diagnostic tool to stage COPD in addition to PFT.
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Affiliation(s)
- E de Boer
- Department of Radiology, Isala hospital, Dr. van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - I M Nijholt
- Department of Radiology, Isala hospital, Dr. van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - S Jansen
- Department of Radiology, Isala hospital, Dr. van Heesweg 2, 8025 AB, Zwolle, The Netherlands
| | - M A Edens
- Department of Innovation and Science, Isala hospital, Zwolle, The Netherlands
| | - S Walen
- Department of Pulmonology, Isala hospital, Zwolle, The Netherlands
| | | | - M F Boomsma
- Department of Radiology, Isala hospital, Dr. van Heesweg 2, 8025 AB, Zwolle, The Netherlands.
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van der Kolk BYM, Nijholt IM, Podlogar M, Bouma GJ, Brink WAVD, Buijteweg LN, van Hasselt BAAM, Schep NWL, Maas M, Boomsma MF. The FIST Study: Exploring Clinical Strength of Cervical Spine CT in Determining Need for Stabilizing Treatment in Cervical Spine Injury. Semin Musculoskelet Radiol 2019. [DOI: 10.1055/s-0039-1692557] [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: 10/26/2022]
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Dolga AM, Terpolilli N, Kepura F, Nijholt IM, Knaus HG, D'Orsi B, Prehn JHM, Eisel ULM, Plant T, Plesnila N, Culmsee C. KCa2 channels activation prevents [Ca2+]i deregulation and reduces neuronal death following glutamate toxicity and cerebral ischemia. Cell Death Dis 2011; 2:e147. [PMID: 21509037 PMCID: PMC3122061 DOI: 10.1038/cddis.2011.30] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Exacerbated activation of glutamate receptor-coupled calcium channels and subsequent increase in intracellular calcium ([Ca2+]i) are established hallmarks of neuronal cell death in acute and chronic neurological diseases. Here we show that pathological [Ca2+]i deregulation occurring after glutamate receptor stimulation is effectively modulated by small conductance calcium-activated potassium (KCa2) channels. We found that neuronal excitotoxicity was associated with a rapid downregulation of KCa2.2 channels within 3 h after the onset of glutamate exposure. Activation of KCa2 channels preserved KCa2 expression and significantly reduced pathological increases in [Ca2+]i providing robust neuroprotection in vitro and in vivo. These data suggest a critical role for KCa2 channels in excitotoxic neuronal cell death and propose their activation as potential therapeutic strategy for the treatment of acute and chronic neurodegenerative disorders.
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Affiliation(s)
- A M Dolga
- Institut für Pharmakologie und Klinische Pharmazie, Fachbereich Pharmazie, Philipps-Universität Marburg, Marburg, Germany
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