PET/MRI and PET/CT in advanced gynaecological tumours: initial experience and comparison.
Eur Radiol
; 25(8): 2222-30, 2015 Aug.
Article
in En
| MEDLINE
| ID: mdl-26017734
ABSTRACT
PURPOSE:
To compare the diagnostic accuracy of PET/MRI and PET/CT for staging and re-staging advanced gynaecological cancer patients as well as identify the potential benefits of each method in such a population. MATERIAL ANDMETHODS:
Twenty-six patients with suspicious or proven advanced gynaecological cancer (12 ovarian, seven cervical, one vulvar and four endometrial tumours, one uterine metastasis, and one primary peritoneal cancer) underwent whole-body imaging with a sequential trimodality PET/CT/MR system. Images were analysed regarding primary tumour detection and delineation, loco-regional lymph node staging, and abdominal/extra-abdominal distant metastasis detection (last only by PET/CT).RESULTS:
Eighteen (69.2 %) patients underwent PET/MRI for primary staging and eight patients (30.8 %) for re-staging their gynaecological malignancies. For primary tumour delineation, PET/MRI accuracy was statistically superior to PET/CT (p < 0.001). Among the different types of cancer, PET/MRI presented better tumour delineation mainly for cervical (6/7) and endometrial (2/3) cancers. PET/MRI for local evaluation as well as PET/CT for extra-abdominal metastases had therapeutic consequences in three and one patients, respectively. PET/CT detected 12 extra-abdominal distant metastases in 26 patients.CONCLUSION:
PET/MRI is superior to PET/CT for primary tumour delineation. No differences were found in detection of regional lymph node involvement and abdominal metastases detection. KEY POINTS ⢠PET/MRI is superior to PET/CT for primary tumour delineation ⢠PET/CT represents a reliable tool to detect extra-abdominal distant metastasis ⢠PET/MRI might be the preferred imaging modality for staging cervical and endometrial tumours ⢠Whole-body staging for detection and evaluation of extra-abdominal metastases is mandatory.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Genital Neoplasms, Female
Type of study:
Evaluation_studies
/
Observational_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Middle aged
Language:
En
Journal:
Eur Radiol
Journal subject:
RADIOLOGIA
Year:
2015
Document type:
Article
Affiliation country:
Switzerland