scholarly journals The Relationship Between Posterior Pituitary Bright Spot on Magnetic Resonance Imaging (MRI) and Postoperative Diabetes Insipidus for Pituitary Adenoma Patients

2018 ◽  
Vol 24 ◽  
pp. 6579-6586 ◽  
Author(s):  
Shousen Wang ◽  
Kunzhe Lin ◽  
Deyong Xiao ◽  
Liangfeng Wei ◽  
Lin Zhao
Keyword(s):  
Magnetic Resonance Imaging ◽  
Pituitary Adenoma ◽  
Magnetic Resonance ◽  
Diabetes Insipidus ◽  
Bright Spot ◽  
Posterior Pituitary ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship ◽  
Pituitary Bright Spot

Enhanced magnetic resonance imaging in multiple sclerosis

2000 ◽  
Vol 6 (5) ◽  
pp. 320-326 ◽  
Author(s):  
M Filippi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Tissue Loss ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri ◽  
The One ◽  
The Relationship

Gadolinium-enhanced magnetic resonance imaging (MRI) is very sensitive in the detection of active lesions of multiple sclerosis (MS) and has become a valuable tool to monitor the evolution of the disease either natural or modified by treatment. In the past few years, several studies, on the one hand, have assessed several ways to increase the sensitivity of enhanced MRI to disease activity and, on the other, have investigated in vivo the nature and evolution of enhancing lesions using different non-conventional MR techniques to better define the relationship between enhancement and tissue loss in MS. The present review is a summary of these studies whose results are discussed in the context of MS clinical trial planning and monitoring.

Optic Nerve Hypoplasia: Absence of Posterior Pituitary Bright Signal on Magnetic Resonance Imaging Correlates With Diabetes Insipidus

1996 ◽  
Vol 122 (5) ◽  
pp. 717-723 ◽  
Author(s):  
JEFFREY A. SORKIN ◽  
PATRICIA C. DAVIS ◽  
LILLIAN R. MEACHAM ◽  
JOHN S. PARKS ◽  
ARLENE V. DRACK ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Optic Nerve ◽  
Magnetic Resonance ◽  
Diabetes Insipidus ◽  
Optic Nerve Hypoplasia ◽  
Posterior Pituitary ◽  
Resonance Imaging

scholarly journals A Longitudinal Study of Vasopressin Cell Antibodies, Posterior Pituitary Function, and Magnetic Resonance Imaging Evaluations in Subclinical Autoimmune Central Diabetes Insipidus

1999 ◽  
Vol 84 (9) ◽  
pp. 3047-3051 ◽  
Author(s):  
A. De Bellis ◽  
A. Colao ◽  
F. Di Salle ◽  
V. I. Muccitelli ◽  
S. Iorio ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Autoimmune Diseases ◽  
Diabetes Insipidus ◽  
Central Diabetes Insipidus ◽  
Pituitary Function ◽  
Study Entry ◽  
Posterior Pituitary ◽  
Resonance Imaging

Cytoplasmic autoantibodies to vasopressin-cells (AVPcAb) have been detected not only in patients with overt central diabetes insipidus (CDI), but also in patients with endocrine autoimmune diseases without CDI. This suggests that complete CDI can be preceded by a preclinical stage. Among 878 patients with endocrine autoimmune diseases without CDI, 9 patients found to be AVPcAb positive and 139 AVPcAb-negative controls were enrolled in this open prospective study. They were evaluated for AVPcAb and posterior pituitary function at least yearly for about 4 yr (range, 37–48 months); during this span, magnetic resonance imaging (MRI) of posterior pituitary and stalk was performed only in the AVPcAb-positive patients. Five of the 9 AVPcAb-positive patients had normal posterior pituitary function at study entry. They were AVPcAb positive throughout the follow-up period. At later stages of the study, 3 of them developed partial CDI, and 1 developed complete CDI. The remaining 4 patients showed impaired response to the water deprivation test at study entry and were diagnosed as having partial CDI. Two of them agreed to receive desmopressin replacement for 1 yr. After this treatment, the patients became negative for AVPcAb and displayed normal posterior pituitary function until the end of the follow-up. Conversely, the 2 untreated patients with partial CDI remained AVPcAb positive. One of them developed overt CDI. None of the controls became AVPcAb positive or developed CDI. The normal hyperintense MRI signal of the posterior pituitary, present at study entry, persisted subsequently in all 9 AVPcAb-positive patients, including those developing overt CDI, only disappearing in the late phase of complete CDI. In asymptomatic subjects, the monitoring of AVPcAb, but not MRI, seems to be useful to predict a progression toward partial/overt CDI. Early desmopressin therapy in patients with partial CDI could interrupt or delay the autoimmune damage and the progression toward clinically overt CDI.

Bicaudate Index on Magnetic Resonance Imaging: Effects of Normal Aging

1994 ◽  
Vol 7 (1) ◽  
pp. 13-17 ◽  
Author(s):  
P. Murali Doraiswamy ◽  
Linda Patterson ◽  
Chul Na ◽  
Mustafa M. Husain ◽  
Orest Boyko ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cerebral Atrophy ◽  
Normal Aging ◽  
Resonance Imaging ◽  
Huntington's Chorea ◽  
Caudate Nuclei ◽  
Computed Tomographic ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship

The bicaudate and bifrontal indices have been used in prior computed tomographic studies to investigate atrophy of the caudate nuclei in patients with Huntington's chorea and cerebral atrophy. However, the relationship between these indices and caudate volume has not been documented previously. In this study, we used high-field magnetic resonance imaging (MRI) to determine the effects of normal aging on the bicaudate and bifrontal indices and to study the relationship between these indices and caudate volume. The subjects were 49 normal volunteers, aged 22 to 82 years, who were without any significant neurologic or psychiatric disorders. Age was positively correlated with bicaudate index ( r = .59; P < .0001) and bifrontal index ( r = .40; P < .0047). Age was negatively correlated with caudate nuclei volume ( r = -.47; P < .0005). Caudate volume was negatively correlated with bicaudate ( r = -.27; P < .06) and bifrontal ( r = -.31; P < .03) indices. These findings are consistent with prior reports of caudate nuclei degeneration with increasing age. Linear and volumetric caudate measurements with MRI may prove useful in the investigation of caudate nuclei function in the neuromotor decline with normal aging and in disorders such as Huntington's chorea.

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