Evaluating the effect of rectal distension on prostate multiparametric MRI image quality

Published on May 1, 2017in European Journal of Radiology3.528
· DOI :10.1016/J.EJRAD.2017.02.029
Iztok Caglic9
Estimated H-index: 9
 (University of Cambridge), Nienke L. Hansen9
Estimated H-index: 9
 (University of Cambridge)+ 2 AuthorsTristan Barrett37
Estimated H-index: 37
 (University of Cambridge)
Sources
Abstract
Abstract Purpose To evaluate the effect of rectal distension on the quality of anatomical and functional prostate multiparametric (mp) MRI. Materials and methods Multiparametric (mp) 3T-MRI images of 173 patients were independently evaluated by two radiologists in this retrospective study. Planimetry rectal volumes were derived and a subjective assessment of rectal distension was made using a 5-point Likert scale (1 = no stool/gas, 5 = large amount of stool/gas). Image quality of diffusion-weighted imaging (DWI) was evaluated using a 5-point Likert scale. DWI was further scored for distortion and artefact. T2W images were evaluated for image sharpness and the presence of motion artefact. The stability of the dynamic contrast-enhancement acquisition was assessed by recording the number of corrupt data points during the wash-out phase. Results There was a strong correlation between subjective scoring of rectal loading and objectively measured rectal volume (r = 0.82), p  Conclusion Rectal distension has a significant negative effect on the quality of both T2W and DW images. Consideration should therefore be given to bowel preparation prior to prostate mpMRI to optimise image quality.
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May 1, 2017·BJUI23.06
#1Nienke L. Hansen (University of Cambridge)H-Index: 9
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Objectives To evaluate the influence of prostate-specific antigen density (PSAD) on positive (PPV) and negative (NPV) predictive values of multiparametric magnetic resonance imaging (mpMRI) to detect Gleason score ≥7 cancer in a repeat biopsy setting. Patients and Methods Retrospective study of 514 men with previous prostate biopsy showing no or Gleason score 6 cancer. All had mpMRI, graded 1–5 on a Likert scale for cancer suspicion, and subsequent targeted and 24-core systematic image-fusion gu...
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Nov 1, 2016·European Urology20.10
#1Jelle O. BarentszH-Index: 94
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Mar 1, 2016·Journal of Radiotherapy in Practice
#1Helen Bayles (James Cook University Hospital)H-Index: 1
#2Mark Collins (SHU: Sheffield Hallam University)H-Index: 2
Last. Melanie Clarkson (SHU: Sheffield Hallam University)H-Index: 2
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AimDuring radiotherapy of the prostate it is important to minimise interfraction prostate motion to allow dose escalation and reduce normal tissue damage. Rectal volume has been identified as playing a significant role in prostate motion with various methods used to reduce it. The aim was to systematically review published literature to allow evidence based recommendations to be made to current practice to reduce interfraction prostate motion.Materials and methodsA systematic search of CINAHL, M...
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Jan 1, 2016·European Urology20.10
#1Jeffrey C. Weinreb (Yale University)H-Index: 73
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The Prostate Imaging - Reporting and Data System Version 2 (PI-RADS™ v2) is the product of an international collaboration of the American College of Radiology (ACR), European Society of Uroradiology (ESUR), and AdMetech Foundation. It is designed to promote global standardization and diminish variation in the acquisition, interpretation, and reporting of prostate multiparametric magnetic resonance imaging (mpMRI) examination, and it is based on the best available evidence and expert consensus op...
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Nov 1, 2015·Clinical Radiology2.35
#1Tristan Barrett (University of Cambridge)H-Index: 37
#2Baris TurkbeyH-Index: 80
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Prostate cancer is the second most prevalent cancer in men worldwide and its incidence is expected to double by 2030. Multi-parametric magnetic resonance imaging (MRI) incorporating anatomical and functional imaging has now been validated as a means of detecting and characterising prostate tumours and can aid in risk stratification and treatment selection. The European Society of Urogenital Radiology (ESUR) in 2012 established the Prostate Imaging—Reporting and Data System (PI-RADS) guidelines a...
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Nov 1, 2015·Magnetic Resonance Imaging2.55
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Abstract Purpose Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and methods 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b = 800 s/mm 2 ). The restriction spectrum protocol parameters inc...
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Jan 1, 2015·Abdominal Imaging
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Jan 1, 2015·Magnetic Resonance Imaging2.55
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Abstract The purposes of this study were to determine if image distortion is less in prostate MR apparent diffusion coefficient (ADC) maps generated from a reduced-field-of-view (rFOV) diffusion-weighted-imaging (DWI) technique than from a conventional DWI sequence (CONV), and to determine if the rFOV ADC tumor contrast is as high as or better than that of the CONV sequence. Fifty patients underwent a 3 T MRI exam. CONV and rFOV (utilizing a 2D, echo-planar, rectangularly-selective RF pulse) seq...
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Aug 17, 2021·Canadian Association of Radiologists Journal-journal De L Association Canadienne Des Radiologistes2.25
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Aug 9, 2021·Journal of Magnetic Resonance Imaging4.81
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BACKGROUND Prostate magnetic resonance imaging (MRI) is technically demanding, requiring high image quality to reach its full diagnostic potential. An automated method to identify diagnostically inadequate images could help optimize image quality. PURPOSE To develop a convolutional neural networks (CNNs) based analysis pipeline for the classification of prostate MRI image quality. STUDY TYPE Retrospective. SUBJECTS Three hundred sixteen prostate mpMRI scans and 312 men (median age 67). FIELD STR...
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There is increasing interest in the use of multiparametric magnetic resonance imaging (mpMRI) in the prostate cancer pathway. The European Association of Urology (EAU) and the British Association of Urological Surgeons (BAUS) now advise mpMRI prior to biopsy, and the Prostate Imaging Reporting and Data System (PI-RADS) recommendations set out the minimal technical requirements for the acquisition of mpMRI of the prostate.The widespread and swift adoption of this technique has led to variability ...
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#6Antonio C. Westphalen (Dund.: University of Dundee)H-Index: 31
The Coronavirus disease 2019 (COVID-19) pandemic has significantly affected health care systems throughout the world. A Qualtrics survey was targeted for radiologists around the world to study its effect on the operations of prostate MRI studies and biopsies. Descriptive statistics were reported. A total of 60 complete responses from five continents were included in the analysis. 70% of the responses were from academic institutions. Among all participants, the median (range) number of prostate M...
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Mar 26, 2021·Abdominal Radiology3.04
#1Cynthia Schmidt (UZH: University of Zurich)H-Index: 2
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BACKGROUND Bowel preparation before multiparametric MRI (mpMRI) of the prostate is performed widely, despite contradictory or no evidence for efficacy. PURPOSE To investigate the value of hyoscine N-butylbromide (HBB), microenema (ME) and 'dietary restrictions' (DR) for artifact reduction and image quality (IQ) in mpMRI of the prostate. STUDY TYPE Retrospective. POPULATION Between 10/2018 and 02/2020 treatment-naive men (median age, 64.9; range 39.8-87.3) who underwent mpMRI of the prostate were...
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Mar 23, 2021·European Radiology5.32
#1Carolin Reischauer (University of Fribourg)H-Index: 2
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