Normative Parameters of Evans Index using Computerized Tomographic Scan in Individuals of Kashmiri Ethnicit

Jehangir, Majid; Dar, Iqubal Hussain; Sahota, Amandeep; Hassan, GH; Mustafa, Kaleem; Javaid, Aamir

doi:10.21276/ijcmr.2018.5.6.2

Cited by 4 publications

(6 citation statements)

References 8 publications

(12 reference statements)

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“…Additionally, this value based on international guidelines. Evans index (EI) is also a valid estimated index in posttraumatic ventriculomegaly (Jehangir et al, 2018). EI is related with some conditions such as normal ageing, neurodegenarative diseases, tumors, trauma, and some hydrocephalus types, alcoholism, dementia, cerebral atrophy, multiple sclerosis.…”

Section: Discussionmentioning

confidence: 99%

“…But, brain atrophy maybe compensated by increase in the ventricle size, although the EI does not surpass 0.3 (Moore et al, 2012;Kanakaraj et al;Arun Kumar et al, 2017a). We determined this index that maximum width between the frontal horns of the lateral ventricles divided by the maximum transverse inner diameter of the skull as noted in literature data (Karakas et al;Moore et al;Reddy et al, 2015;Patnaik et al;Arun Kumar et al, 2017a;Jehangir et al). In normal subjects or over the age of 60, EI is equal to or less than 0.29 (LeMay, 1984).The Evans ratio was found as 0.25 in Turkish females and males (Karakas et al).…”

Section: Discussionmentioning

confidence: 99%

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Morphometric MRI Study of the Brain Ventricles in Healthy Turkish Subjects

Polat

Öksüzler

et al. 2019

Int. J. Morphol.

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POLAT, S.; ÖKSÜZLER, F. Y.; ÖKSÜZLER, M.; KABAKCI, A. G. & YÜCEL, A. H. Morphometric MRI study of the brain ventricles in healthy Turkish subjects. Int. J. Morphol., 37(2):554-560, 2019. SUMMARY:The aim of this study was to determine the normal values of brain ventricles and indices in healthy subjects in our population using magnetic resonance imaging (MRI) and to reveal sex and age related differences. The MRI of two hundred-sixty-five healthy individuals aged between eighteen and eighty-seven years were examined and the midsagittal and axial images were used for measurements. The measurements were performed from MRI on a Workstation. The following mean values of brain ventricles and indices were observed; frontal horn width (FHW) (33.14 mm); third (3rd) ventricle width (TVW) (3.37 mm); fourth ventricle anteroposterior width (FVWAP) (9.93 mm); fourth ventricle transverse width (FVWT) (12.40 mm); and the maximum transverse inner diameter of the skull (TIDS) (128.75 mm) in females. The same dimensions were 34.85 mm, 3.91 mm, 10.26 mm, 12.81 mm, and 134.68 mm in males, respectively. There were statistically significantly differences in the frontal horn width, third (3rd) ventricle width, and the maximum transverse inner diameter of the skull values in between sexes. The mean values of Evans' index which obtanied with maximum width between the frontal horns of the lateral ventricles divided by the maximum transverse inner diameter of the skull were found as 0.280 ±0.172 in females; whereas the same dimensions were calculated 0.276±0.161 in males. These values were lower in healthy male subjects than females, however; there were no found significantly difference between groups. Present findings obtained from MRI are necessary anatomical baseline data for interpreting pathological changes, planning surgery, and determining presence and progress of some neurological diseases.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Morphometric MRI Study of the Brain Ventricles in Healthy Turkish Subjects

Polat

Öksüzler

et al. 2019

Int. J. Morphol.

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“…Obstructive hydrocephalus also presents in 70% of tumors located in the pineal region [3]. Patients can be either symptomatic, have symptoms related to the primary tumor, or have hydrocephalusrelated symptoms [1]. Generally, symptomatic patients are candidates for VP shunt placement to reduce acute symptoms.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrocephalus is a build-up of cerebrospinal fluid (CSF) in the brain and is characterized by abnormal dilatation of the cerebral ventricles. The CSF accumulation may be due to obstruction in the normal flow or an imbalance in production and absorption [ 1 ]. The obstruction most commonly occurs at the foramen of Monro, the aqueduct of Sylvius, the fourth ventricle, and the foramen magnum; most tumors with a significant size or that produce a mass effect by edema can impede circulation at any point of CSF pathways causing obstructive hydrocephalus [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Upfront Radiosurgery for Treatment of Symptomatic Obstructive Hydrocephalus due to Brain Tumors

Moreira¹,

Rodezno²,

Santos³

et al. 2022

Cureus

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IntroductionHydrocephalus is a build-up of cerebrospinal fluid (CSF) in the brain and is characterized by abnormal dilatation of the cerebral ventricles. Patients can be either asymptomatic, have symptoms related to primary tumors, or have hydrocephalus-related symptoms. Generally, symptomatic patients are candidates for ventriculoperitoneal (VP) shunt placement to reduce acute symptoms. Little evidence exists regarding the resolution of symptomatic hydrocephalus secondary to brain tumors using stereotactic radiosurgery (SRS) alone as a primary treatment option. MethodsThe present study is a retrospective series of eight patients (six men and two women) diagnosed with obstructive hydrocephalus due to brain tumors treated with radiosurgery between April 2013 and February 2021. The primary endpoint of the present study is to report our institutional experience regarding the control of symptomatic obstructive hydrocephalus due to brain tumors treated with upfront radiosurgery. ResultsThe mean age was 52 years (range, 5-79). The most common presenting symptoms included headache (100%), vision-related symptoms (75%), and ataxia (37.5%). All patients showed symptom improvement after radiosurgery, five (62.5%) patients showed resolution in less than three days and the rest of the patients resolved hydrocephalus in a longer timeframe (more than three days). All patients lowered their Evans index compared to the index documented before radiosurgery, in a range from 0.02 to 0.17. ConclusionRadiosurgery is a non-invasive alternative treatment for primary and secondary brain tumors that debut with obstructive hydrocephalus, tumors expected to have a high alpha/beta ratio might be suitable to attempt radiosurgery to avoid permanently implanted devices such as VP shunts or other invasive procedures such as a third ventriculostomy. The present study demonstrated that in selected cases SRS can lead to hydrocephalus symptom resolution along with a decrease in ventricular size in a relatively short time frame. Little evidence exists regarding the effect of SRS on symptomatic hydrocephalus resolution and further histology-specific studies are required. We acknowledge that this approach requires immediate access to radiosurgery and close clinical follow-up to ensure success.

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“…3 Ventricular enlargement caused due to imbalance in the production and absorption of cerebrospinal fluid is referred as hydrocephalus. 4,5 Cerebal ventricular enlargement is one of the characteristic in cerebral disorders associated with neurologic and psychiatric involvements. It has been demonstrated as encephalographic abnormality both in children and adults.…”

Section: Introductionmentioning

confidence: 99%

Study of Normal Values of Evan’s Index on Brain CT Scan in Individuals attending Nepal Medical College Teaching Hospital, Kathmandu, Nepal

et al. 2021

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Ventriculographic indices are obtained by using Evan’s Index. Evan’s Index is a ratio which compares the maximum width of the frontal horns of the lateral ventricle to the maximum transverse diameter of the inner table of the skull and serves as an indirect marker of ventricular volume. Evan’s Index has been extensively used in the diagnosis of idiopathic normal pressure hydrocephalus, in the assessment of outcome of patients having shunt placement which is the primary mode of treatment. This study was aimed to find out the normal values of Evan’s Index on brain CT scan in individuals attending Nepal medical college teaching hospital, Kathmandu, Nepal. A total of 500 individuals CT (250 males and 250 females) were finally selected. The ages were ranged between 5 to 80 years old. The mean Evan’s Index in the studied population was 0.253 ± 0.037 in males, 0.250 ± 0.034 in the females and an overall mean of 0.251 ± 0.035. There was no significant statistical difference in the Evans ratio between male and females (P = 0.274). This study shows that Evan’s Index was higher in individuals who were 60 years and above in both males and females. The very small standard deviations appreciated in the result suggest that Evan’s index can be calculated fairly accurately.

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Normative Parameters of Evans Index using Computerized Tomographic Scan in Individuals of Kashmiri Ethnicit

Cited by 4 publications

References 8 publications

Morphometric MRI Study of the Brain Ventricles in Healthy Turkish Subjects

Morphometric MRI Study of the Brain Ventricles in Healthy Turkish Subjects

Upfront Radiosurgery for Treatment of Symptomatic Obstructive Hydrocephalus due to Brain Tumors

Study of Normal Values of Evan’s Index on Brain CT Scan in Individuals attending Nepal Medical College Teaching Hospital, Kathmandu, Nepal

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