Hipofizer mikroadenomlar›n de¤erlendirilmesinde dinamik MRG’nin yeri

158 ● H a z i r a n 2 0 0 1 M ikroadenomlar›n saptanmas›nda manyetik rezonans görüntüleme (MRG) en duyarl› yöntem olmas›na karş›n, değişik merkezlerde farkl› MRG protokolleri uygulanmaktad›r. Rutin değerlendirmelerde, özellikle adenom şüphesi olan olgularda, çoğunlukla küçük görüntü alan›nda (FOV) ve ince kesit kal›nl›ğ›nda T1 ağ›rl›kl› spin eko (SE) sekans› kullan›lmaktad›r. İnceleme koronal ve sagital düzlemlerde, paramanyetik kontrast madde kullan›m› öncesi ve sonras› tekrarlanarak yap›lmaktad›r. Baz› merkezlerde üç boyutlu (3 B) gradyent eko (GRE) ince kesit görüntüler eklenmektedir (1,2). Hipofizer mikroadenomlar›n saptanmas›nda dinamik görüntülemenin rutin incelemelere üstünlüğünün olup olmad›ğ›n› göstermek, rutin çal›şmalar aras›nda prekontrast ve postkontrast tetkiklerin karş›laşt›r›lmas› ve sonuçta en uygun protokolün belirlenmesi amaçlanm›şt›r.

[1]  A. Higuera,et al.  Analysis of indirect signs of microprolactinoma at MR imaging. , 1999, European journal of radiology.

[2]  R. Zimmerman,et al.  Imaging of sellar and parasellar pathology. , 1999, Radiologic clinics of North America.

[3]  A. Rosenbaum,et al.  Pituitary gland: Variable signal intensities on mri a pictorial essay , 1998 .

[4]  J. Bishop,et al.  Detection of pituitary microadenomas: comparison of dynamic keyhole fast spin-echo, unenhanced, and conventional contrast-enhanced MR imaging. , 1994, AJR. American journal of roentgenology.

[5]  N. Colombo,et al.  MR of corticotropin-secreting pituitary microadenomas. , 1994, AJNR. American journal of neuroradiology.

[6]  W. Kucharczyk,et al.  Pituitary gland MR: a comparative study of healthy volunteers and patients with microadenomas. , 1994, AJNR. American journal of neuroradiology.

[7]  W T Yuh,et al.  Sequential MR enhancement pattern in normal pituitary gland and in pituitary adenoma. , 1994, AJNR. American journal of neuroradiology.

[8]  D. Finelli,et al.  Varied microcirculation of pituitary adenomas at rapid, dynamic, contrast-enhanced MR imaging. , 1993, Radiology.

[9]  E. Laws,et al.  MR of the pituitary gland postsurgery: serial MR studies following transsphenoidal resection. , 1993, AJNR. American journal of neuroradiology.

[10]  A. Elster.  Sellar susceptibility artifacts: theory and implications. , 1993, AJNR. American journal of neuroradiology.

[11]  R. Tien,et al.  Sequence of enhancement of various portions of the pituitary gland on gadolinium-enhanced MR images: correlation with regional blood supply. , 1992, AJR. American journal of roentgenology.

[12]  坂本 祐二,et al.  Normal and abnormal pituitary glands : gadopentetate dimeglumine-enhanced MR imaging , 1992 .

[13]  J Kawamura,et al.  Pituitary adenomas and normal pituitary tissue: enhancement patterns on gadopentetate-enhanced MR imaging. , 1990, Radiology.

[14]  G. Valvassori.  Magnetic resonance imaging and computed tomography of the head and spine , 1990 .

[15]  T. H. Newton,et al.  Gd-DTPA-enhanced MR imaging of pituitary adenomas. , 1989, AJNR. American journal of neuroradiology.

[16]  V M Haughton,et al.  Magnetic susceptibility artifacts in gradient-recalled echo MR imaging. , 1988, AJNR. American journal of neuroradiology.

[17]  M. Kulkarni,et al.  5-T MR imaging of pituitary microadenomas : , 2013 .

[18]  J. Malko,et al.  Gadolinium-DTPA and MR imaging of pituitary adenoma: a preliminary report. , 1987, AJNR. American journal of neuroradiology.

[19]  J. Doppman,et al.  Pituitary adenomas in patients with Cushing disease: initial experience with Gd-DTPA-enhanced MR imaging. , 1987, Radiology.

[20]  P. Davis,et al.  MR imaging of pituitary adenoma: CT, clinical, and surgical correlation. , 1987, AJR. American journal of roentgenology.

[21]  W. Gorczyca,et al.  Arterial supply of the human anterior pituitary gland. , 1987, Neurosurgery.

[22]  S. S. Weissbuch.  Explanation and implications of MR signal changes within pituitary adenomas after bromocriptine therapy. , 1986, AJNR. American journal of neuroradiology.

[23]  M. Rzeszotarski,et al.  Measurement of pituitary gland height with MR imaging. , 1985, AJNR. American journal of neuroradiology.

[24]  S. Wolpert,et al.  Size, shape, and appearance of the normal female pituitary gland. , 1984, AJR. American journal of roentgenology.

[25]  E. E. Smith,et al.  Incidental pituitary adenomas: a retrospective study. , 1982, Surgery.