2023年7月18日 · A typical targeted MRI examination of the pituitary region includes coronal and sagittal small field of view T1 and T1 post-contrast images, as well as dynamic contrast-enhanced coronal images, which are critical for the identification of small microadenomas.

Contrast MRI is the only way to adequately evaluate the pituitary gland. For all pituitary lesions, MRI offers multiplanar capabilities and soft tissue contrast essential in detecting these lesions. The larger sella tumors pose no imaging problem.

A dynamic pituitary examination uses one of the simplest contrast monitoring timing methods called the Guess timing technique. It works by estimating the time it takes for contrast to travel from the injection site to the vascular structures of the pituitary gland.

2024年4月23日 · MRI of the pituitary gland with contrast is often prescribed to patients who are undergoing surgery to remove tumor formations in this part of the brain. Contrast substance accumulates in areas with increased blood supply - for example, in tissues in which the tumor process is actively developing.

2024年6月28日 · MRI protocol for pituitary gland is a group of MRI sequences put together to improve sensitivity and specificity for the assessment of lesions of the pituitary gland (e.g. pituitary adenoma) and other sellar and suprasellar abnormalities (check the article on pituitary region masses for some examples).

These key structures must be clearly visible in a pituitary MRI: Pituitary gland and stalk; Infundibulum; Cavernous sinuses and internal carotid arteries; Optic chiasm; Hypothalamus; Sphenoid sinus; Clivus; Below, we will go through all the different image contrasts and explain their specific role in imaging the pituitary gland.

2023年1月16日 · Most pituitary lesions are discovered incidentally and are comprised mostly of pituitary adenomas and Rathke’s cleft cysts, both easily diagnosed using contrast-enhanced MRI. Other rare diagnoses such as pituitary metastasis, abscess, infarction/hemorrhage, or epidermoid cyst demonstrate unique imaging characteristics and rarely pose a ...

MRI is the modality of choice for pituitary gland-related pathologies due to its superior soft-tissue contrast, lack of ionizing radiation, and multiplanar capability (8). Additionally, MRI provides valuable information about the relationship of the gland with adjacent anatomical structures (9) .

2023年9月14日 · This chapter reviews and illustrates the normal anatomy and MRI appearances of the pituitary gland and hypothalamic region. The optimal MRI technique relies on thin section T1-weighted sequences in the sagittal and coronal …

Dynamic contrast imaging of the pituitary gland reveals differential enhancement pattern of a small ade- noma to the right of midline on sequential imaging at the same slice location, which demonstrates delayed