Obese patients in an open MRI at 1.0 Tesla: image quality, diagnostic impact and feasibility

Bucourt, Maximilian de; Streitparth, Florian; Wonneberger, Uta; Rump, Jens; Teichgräber, Ulf

doi:10.1007/s00330-010-2005-2

Cited by 27 publications

(28 citation statements)

References 34 publications

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“…Findings indicate that over this fifteen year period, during which obesity rates had steadily risen, there had been a small but significant linear increase in the number of reports that claimed the quality of the images collected was 'limited due to body habitus'. The study further surmises, conversant with the findings of de Bucourt et al [14] and Reynolds [17] , that patient obesity most directly affects image quality in chest radiography and ultrasound, due to decreased penetration and attenuation through the subcutaneous fat. In a a It should be noted that the absence of other core matters is an output of these issues being the focus of further papers emerging from the same original study.…”

Section: Literature Reviewsupporting

confidence: 72%

“…Much contemporary research in medical imaging reveals a great deal of (highly important) information about technical issues, particularly those involved in producing diagnosticallyuseful images [14][15][16][17] . It does not, however, bring us a great deal closer to the equally important practical business of being a radiographer dealing with an obese patient.…”

Section: Resultsmentioning

confidence: 99%

“…Relatively little of this corpus, however, relates directly to radiological disciplines, and even less to plain radiography itself. It is further evident that the majority of pertinent studies attend primarily to the influence of patient obesity on image quality and diagnostic efficacy [14][15][16][17] . Rather less emphasis is placed upon other orders of concern that can emerge within everyday clinical work.…”

Section: Literature Reviewmentioning

confidence: 99%

“…This can sometimes mandate that clinicians who are unaware of a patient's weight in advance make an ad-hoc switch to other diagnostic imaging modalities [14] , rather than risk damage to expensive equipment [15] . Furthermore, table width is typically determined by normative shoulder-to-shoulder measurements.…”

Section: Literature Reviewmentioning

confidence: 99%

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Patient obesity and the practical experience of the plain radiography professional: On everyday ethics, patient positioning and infelicitous equipment

2016

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Section: Literature Reviewsupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

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Patient obesity and the practical experience of the plain radiography professional: On everyday ethics, patient positioning and infelicitous equipment

2016

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“…[2,3]. As a result, dedicated stereotactic and robotic systems are not necessary and the intervention can be conducted using the freehand technique (▶ Fig.…”

Section: Interstitial Free-hand Interventions On Open Scannersmentioning

confidence: 99%

White Paper: Interventional MRI: Current Status and Potential for Development Considering Economic Perspectives, Part 1: General Application

Barkhausen

Kahn

Krombach

et al. 2017

Fortschr Röntgenstr

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ABSTR AC TBackground MRI is attractive for the guiding and monitoring of interventional procedures due to its high intrinsic soft tissue contrast and the possibility to measure physiologic parameters like flow and cardiac function.Method The current status of interventional MRI for the clinical routine was analyzed.Results The effort needed for the development of MR-safe monitoring systems and instruments initially resulted in the application of interventional MRI only for procedures that could not be performed by other means. Accordingly, biopsy of lesions in the breast, which are not detectable by other modalities, has been performed under MRI guidance for decades. Currently, biopsies of the prostate under MRI guidance are established in a similar fashion. At many sites blind biopsy has already been replaced by MR-guided biopsy or at least by the fusion of MR images with ultrasound. Cardiovascular This document was downloaded for personal use only. Unauthorized distribution is strictly prohibited.interventions are performed at several centers for ablation as a treatment for atrial fibrillation. Conclusion IntroductionMRI has an intrinsically high soft-tissue contrast and can be used to measure physiological parameters, such as blood flow (flow rate and flow volume), diffusion, temperature, and movement. Since its introduction into the clinical routine in the 1980 s, it has also been used for guiding and monitoring interventions. However, in contrast to CT and ultrasound, the use of MRI for guiding interventions requires significant technical effort. Due to the disruptive effect of the strong main magnetic field and the alternating electromagnetic fields, the monitoring of patients during an intervention by measuring ECG signals, oxygen saturation, or blood pressure requires special equipment. These monitoring systems must not interfere with the MRI scan and must be MR-safe (according to DIN EN 62 570:2010 -05). The list of requirements regarding monitoring equipment provides an indication of the development effort, with suitable monitoring equipment representing only one of the components necessary for MR-guided interventions.In addition to MRI safety, all catheters and instruments must be adapted to this modality. To ensure MRI safety, metal must be largely avoided since, depending on the length and orientation to the main magnetic field, it can heat up and consequently even result in burns. Achieving rigidity and torsion stability of catheters or guide wires without the use of metal for reinforcement represents a technical challenge. In the case of needles, breaking resistance is one of the more difficult properties to achieve for MR-safe designs. Moreover, instruments must be able to be effectively visualized without adjacent structures being superimposed by artifacts. The tip must be able to be identified and definitively differentiated from the shaft since MRI as a cross-sectional imaging method typically uses individual slices even for guiding interventions and does not use projections as in fluoroscopy...

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Feasibility of arterial spin labeling on a 1T open MRI scanner

Heijtel

Osch

Caan

et al. 2012

Magnetic Resonance Imaging

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Obese patients in an open MRI at 1.0 Tesla: image quality, diagnostic impact and feasibility

Abstract: In excessively obese patients where CT, standard MR or ultrasound examination is not possible or not conclusive open MRI system have great potential in diagnostic evaluation, offering lower but sufficient image quality to impact therapy.

Cited by 27 publications

References 34 publications

Patient obesity and the practical experience of the plain radiography professional: On everyday ethics, patient positioning and infelicitous equipment

Patient obesity and the practical experience of the plain radiography professional: On everyday ethics, patient positioning and infelicitous equipment

White Paper: Interventional MRI: Current Status and Potential for Development Considering Economic Perspectives, Part 1: General Application

Feasibility of arterial spin labeling on a 1T open MRI scanner

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