Detection of SNR and geometric accuracy of MRI system based on ACR standards / 医疗卫生装备
Chinese Medical Equipment Journal
; (6): 74-77, 2017.
Article
de Zh
| WPRIM
| ID: wpr-660208
Bibliothèque responsable:
WPRO
ABSTRACT
Objective To detect the SNR and geometric accuracy of MRI based on American College of Radiology (ACR)standards.Methods The SNR and geometric accuracy of Siemens Skyra 3.0T,Siemens Trio 3.0T and GE Excite HD 1.5T MRI were measured with ACR phantom,and the detection results were calculated according to the standards.Results The SNR values of Siemens Skyra 3.0T,Siemens Trio 3.0T and GE Excite HD 1.5T MRI were 589.98,438.50 and 277.12 respectively.Siemens Skyra 3.0T MRI had the values of geometric accuracy being-1.93% at X direction,-3.20% at Y direction and 0.68% at Z direction,Siemens Trio 3.0T MRI had the value of geometric accuracy being-0.87% at X direction,-2.33% at Y direction and 1.49% at Z direction,GE Excite HD 1.5T MRI had the values of geometric accuracy being 0.20% at X direction,-1.53% at Y direction and 1.69% at Z direction.Conclusion The detection of the SNR and geometric accuracy of MRI can effectively guarantee the image quality.
Texte intégral:
1
Indice:
WPRIM
Type d'étude:
Diagnostic_studies
langue:
Zh
Texte intégral:
Chinese Medical Equipment Journal
Année:
2017
Type:
Article