Morphometric Measurements of Cranio-Vertebral Junction among Nepalese Population

The craniovertebral junction area refers to the osseous structures consisting of the occipital bone that surrounds the foramen magnum, the atlas, and the axis vertebrae. There is sparse literature about the morph metric measurement of craniovertebral junction region. We aim to derive a range of various measurements incraniovertebral junction area. This is a hospital based single center retrospective study conducted in our center among 100 consecutive computed tomography scans of craniovertebral junction obtained in adult patients who were admitted to our tertiary hospital for treatment of non-craniovertebraljunction conditions between 2017 and 2018.Various craniovertebral junction morphology parameters were measured and confidence interval at 95% were obtained the range at 2standard deviation. Among 100 patients studied, 51% of them were males while 49% were females. Mean age was 35.1±10.4 years with range from 15 to50 years. Computed tomography measurement of craniovertebral junction revealed meanders height of 30.8±2.5 mms, dento-clivaldistance was 5.9±1.6 mms and mean McRae’s distance of 34.2±2.49 mms. Similarly, anterioratlantodental interval was calculated to be1.83±0.47 mms and posterior atlantodentalinterval was 17.72±0.21 mms while Modified RW distance was 24.43±2.09 mms and Redlund Johnell distance was calculated to be 31.5±4.29mms. Normal morphometric measurements ofcraniovertebral junction can be useful for evaluating abnormalities of the craniovertebraljunction which can potentially improve the diagnostic criteria of most abnormalities.

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Role of dynamic computed tomography scans in patients with congenital craniovertebral junction malformations

World Journal of Orthopedics ◽

10.5312/wjo.v8.i3.271 ◽

2017 ◽

Vol 8 (3) ◽

pp. 271 ◽

Cited By ~ 4

Author(s):

Otávio Turolo da Silva ◽

Enrico Ghizoni ◽

Helder Tedeschi ◽

Andrei Fernandes Joaquim

Keyword(s):

Computed Tomography ◽

Craniovertebral Junction ◽

Dynamic Computed Tomography ◽

Computed Tomography Scans

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Computed tomography-based morphometric measurements of the atlas (C1) posterior arc

Romanian Neurosurgery ◽

10.33962/roneuro-2020-013 ◽

2020 ◽

pp. 101-105

Author(s):

Yasar Karatas ◽

Bulent Kaya ◽

Mehmet Fatih Erdi ◽

Fatih Keskin ◽

Densel Arac ◽

...

Keyword(s):

Computed Tomography ◽

Retrospective Study ◽

Statistical Difference ◽

Screw Fixation ◽

Craniovertebral Junction ◽

Single Centre ◽

Morphometric Measurements ◽

Hospital Records ◽

Mean Values ◽

The Mean

Study design: Single-center retrospective study Objectives: This study is performed to determine the anatomic feasibility of the C1 posterior arc screw and help select an optimal screw trajectory in treating patients with craniovertebral junction pathologies. Material and Methods: We reported a single-centre retrospective study. Forty patients (20 male and 20 female) who underwent cervical computed tomography (CT) were chosen from the hospital records. Based on CT images, we measured left laminar length (LLL), right laminar length (RLL), left laminar angle (LLA), right laminar angle (RLA), left laminar axial thickness (LLAT), right laminar axial thickness (RLAT), left laminar coronal thickness (LLCT), right laminar coronal thickness (RLCT), and craniocaudal angle (CCA) of the C1 posterior arc. Results: The mean values and standard deviations (SD) for nine parameters at the C1 posterior arc were determined. LLL, RLL, LLCT, and RLCT were statistically longer in men than women. RLAT was bigger in men but there was no statistical difference. RLA was statistically wider in women than men. LLA and CCA were wider in women but there was no statistical difference, LLAT was bigger in women but there was no statistical difference. There was no statistical difference in measurements by age. Conclusion: The results of this study are important to avoid neurovascular injury and pedicle breakage because of choosing large screw while performing C1 laminar screw fixation.

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Faculty Opinions recommendation of Cancer risk in 680,000 people exposed to computed tomography scans in childhood or adolescence: data linkage study of 11 million Australians.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718023711.793479508 ◽

2013 ◽

Author(s):

Michael Brodsky ◽

Paula Grigorian

Keyword(s):

Computed Tomography ◽

Cancer Risk ◽

Data Linkage ◽

Linkage Study ◽

Computed Tomography Scans

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Deep Learning based Staging of Bone Lesions from Computed Tomography Scans (January 2021)

IEEE Access ◽

10.1109/access.2021.3074051 ◽

2021 ◽

pp. 1-1

Author(s):

Samira Masoudi ◽

Sherif Mehralivand ◽

Stephanie A. Harmon ◽

Nathan Lay ◽

Liza Lindenberg ◽

...

Keyword(s):

Computed Tomography ◽

Deep Learning ◽

Bone Lesions ◽

Computed Tomography Scans

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Utility of Head Computed Tomography Scans Prior to Outpatient Follow-up for Low-Risk Mild Traumatic Brain Injury

World Neurosurgery ◽

10.1016/j.wneu.2021.04.087 ◽

2021 ◽

Author(s):

Matthew W. Weber ◽

Jeffrey Z. Nie ◽

Victoria L. Watson ◽

Nathan J. Nordmann ◽

Joseph Bernard ◽

...

Keyword(s):

Computed Tomography ◽

Traumatic Brain Injury ◽

Brain Injury ◽

Mild Traumatic Brain Injury ◽

Low Risk ◽

Computed Tomography Scans ◽

Head Computed Tomography

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Correlation between tympanometry volume and three-dimensional computed tomography mastoid volumetry in tympanoplasty candidates

The Journal of Laryngology & Otology ◽

10.1017/s002221512100164x ◽

2021 ◽

pp. 1-5

Author(s):

L Epprecht ◽

L Qingsong ◽

N Stenz ◽

S Hashimi ◽

T Linder

Keyword(s):

Computed Tomography ◽

Tympanic Membrane ◽

Cell Volume ◽

Radiation Injury ◽

Three Dimensional ◽

Non Invasive ◽

Tympanic Membrane Perforations ◽

Computed Tomography Scans ◽

Air Cells ◽

Mastoid Air Cells

Abstract Objective Ventilation of the middle ear and mastoid air cells is believed to play an important role in the pathogenesis of chronic ear disease. Traditionally, ventilation is assessed by computed tomography. However, this exposes patients to cumulative radiation injury. In cases with a perforation in the tympanic membrane, tympanometry potentially presents a non-invasive alternative to measure the ventilated middle-ear and mastoid air cell volume. This study hypothesised that total tympanometry volume correlates with ventilated middle-ear and mastoid air cell volume. Method Total tympanometry volume was compared with ventilated middle-ear and mastoid air cell volume on computed tomography scans in 20 tympanic membrane perforations. Results There was a high correlation between tympanometry and computed tomography volumes (r = 0.78; p < 0.001). A tympanometry volume more than 2 ml predicted good ventilation on computed tomography. Conclusion These results may help reduce the need for pre-operative computed tomography in uncomplicated cases with tympanic membrane perforations.

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