Reducing Acquisition Time of Diffusion Weighted MR Imaging of the Rectum with Simultaneous Multi-Slice Acquisition: A Reader Study.
Acad Radiol
; 29(12): 1802-1807, 2022 12.
Article
en En
| MEDLINE
| ID: mdl-35256274
ABSTRACT
RATIONALE AND OBJECTIVES:
To assess the acquisition time and image quality of simultaneous multislice-accelerated diffusion-weighted imaging (SMS-DWI) versus conventional DWI (C-DWI) of the rectum. MATERIALS ANDMETHODS:
In patients scheduled for a magnetic resonance imaging of the rectum, both SMS-DWI and C-DWI were performed on a 3T whole body magnetic resonance scanner. Image quality of the DWI sequences was reviewed by two independent radiologists who were blinded to the method of imaging using a five-point Likert scale (score ranging from 1 (non-diagnostic) to 5 (excellent). The mean scores of SMS-DWI versus C-DWI were compared for the individual readers using a nonparametric test (Wilcoxon signed ranks).RESULTS:
The SMS-DWI protocol acquisition time was 408 min vs. 724 min per patient, which led to a reduction of 44.1% for the C-DWI protocol, both excluding time for sequence specific adjustments (shimming). No statistical differences between the conventional-, and SMS- diffusion weighted images were seen for both readers. Mean overall image quality of the SMS-DWI TRACE images was 3.5 (SD 1.3) and 3.3 (SD 1.0) for reader 1 and reader 2, respectively. Mean overall image quality of the C-DWI TRACE images was 3.4 (SD 1.3) and 3.2 (SD 1.1) for reader 1 and reader 2, respectively.CONCLUSION:
Optimized SMS-DWI compared to C-DWI in imaging of the rectum showed similar image quality while a significant acquisition time reduction was achieved.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Recto
/
Imagen de Difusión por Resonancia Magnética
Tipo de estudio:
Guideline
Límite:
Humans
Idioma:
En
Revista:
Acad Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2022
Tipo del documento:
Article