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Titolo:
POSTOPERATIVE SELLA - EVALUATION WITH FAST SPIN-ECHO T2-WEIGHTED HIGH-RESOLUTION IMAGING
Autore:
NAKASU Y; ITOH R; NAKASU S; NIOKA H; KIDOOKA M; HANDA J;
Indirizzi:
SHIGA UNIV MED SCI,DEPT NEUROSURG OTSU SHIGA 52021 JAPAN SHIGA UNIV MED SCI,DEPT RADIOL OTSU SHIGA 52021 JAPAN DAINI OKAMOTO HOSP,DEPT NEUROSURG KYOTO JAPAN
Titolo Testata:
Neurosurgery
fascicolo: 3, volume: 43, anno: 1998,
pagine: 440 - 446
SICI:
0148-396X(1998)43:3<440:PS-EWF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PITUITARY-ADENOMAS; TRANSSPHENOIDAL RESECTION; MR; SEQUENCES; CONTRAST; GLAND;
Keywords:
MRI; PITUITARY ADENOMA; PITUITARY SURGERY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
Y. Nakasu et al., "POSTOPERATIVE SELLA - EVALUATION WITH FAST SPIN-ECHO T2-WEIGHTED HIGH-RESOLUTION IMAGING", Neurosurgery, 43(3), 1998, pp. 440-446

Abstract

OBJECTIVE: The purpose of this study was to investigate the magnetic resonance features of the postoperative sella with fast spin echo (FSE) T2-weighted high-resolution imaging and to evaluate the benefits of the sequence using a follow-up magnetic resonance imaging protocol after transsphenoidal surgery. METHODS: Coronal spin echo (SE) T1-weighted and FSE T2-weighted images were prospectively obtained in 24 patients after surgery for pituitary adenomas. We observed the signals and the contour of normal structures, fluid collection, implanted materials,and mass lesions, including granulation tissue and adenoma.RESULTS: The pituitary gland was delineated in 51 of 59 FSE T2-weighted images, 90.2% of which presented clear boundaries. Whereas the gland was detected in 49 of 58 SE T1-weighted images, only 20.4% showed the boundaries. A mass lesion was identified in each of 12 patients with good resolution on FSE T2-weighted images. SE T1-weighted images detected mass lesions in 7 of 12 patients without distinctive boundaries. Contrast enhancement had little advantage in clarifying the boundaries between normal and abnormal structures. For the detection of mass lesions in thesella, the kappa values for interobserver agreement were 0.8 for FSE T2-weighted images and 0.25 for SE T1-weighted images. CONCLUSION: FSET2-weighted imaging is a reliable method with which to assess the sella with sufficient resolution after transsphenoidal surgery. The combination of unenhanced SE T1-weighted and FSE T2-weighted images may reduce the use of contrast material after pituitary surgery.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 16:46:05