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Fig. 2 | BMC Endocrine Disorders

Fig. 2

From: Agenesis of internal carotid artery associated with isolated growth hormone deficiency: a case report and literature review

Fig. 2

A MRI angiography time-of-flight (TOF) three-dimensional (3D) technique through the circle of Willis revealed agenesis of the intracranial portion of the left internal carotid artery (ICA). a. 3D TOF in the axial plane at the carotid siphon level shows agenesis of the left ICA. b. 3D TOF in the axial plane for the vertebrobasilar system shows the left vertebral artery and the compensatory hypertrophy. c. MRI angiography maximum intensity projection (MIP) reconstruction in the axial plane reveals agenesis of the intracranial portion of the left ICA. d. MRI angiography MIP reconstruction in the coronal plane highlights hypertrophy in the left vertebral collateral blood flow. e. Sagittal T1W TSE sequence shows adenohypophyseal hypoplasia (height 2.5 mm and width 3.5 mm) with a lack of posterior pituitary hyperintensity

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