Cranio-Vertebral Junction Triangular Area: Quantification of Brain Stem Compression by Magnetic Resonance Images
Autor: | Peng-Yuan Chang, Wen Cheng Huang, Li-Yu Fay, Ching-Lan Wu, Hsuan-Kan Chang, Henrich Cheng, Tsung-Hsi Tu, Chih-Chang Chang, Jau-Ching Wu |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
cervical triangular area
odontoid fracture rheumatoid arthritis (RA) atlantoaxial subluxation (AAS) basilar invagination (BI) os odontoideum craniovertebral junction (CVJ) Article lcsh:RC321-571 030218 nuclear medicine & medical imaging 03 medical and health sciences Myelopathy 0302 clinical medicine Clivus medicine Cutoff Clinical significance lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry medicine.diagnostic_test Receiver operating characteristic business.industry General Neuroscience Area under the curve Magnetic resonance imaging medicine.disease medicine.anatomical_structure nervous system business Nuclear medicine Brain stem compression 030217 neurology & neurosurgery |
Zdroj: | Brain Sciences; Volume 11; Issue 1; Pages: 64 Brain Sciences, Vol 11, Iss 64, p 64 (2021) Brain Sciences |
ISSN: | 2076-3425 |
DOI: | 10.3390/brainsci11010064 |
Popis: | (1) Background: Most of the currently used radiological criteria for craniovertebral junction (CVJ) were developed prior to the popularity of magnetic resonance images (MRIs). This study aimed to evaluate the efficacy of a novel triangular area (TA) calculated on MRIs for pathologies at the CVJ. (2) Methods: A total of 702 consecutive patients were enrolled, grouped into three: (a) Those with pathologies at the CVJ (n = 129); (b) those with underlying rheumatoid arthritis (RA) but no CVJ abnormalities (n = 279); and (3) normal (control; n = 294). TA was defined on T2-weighted MRIs by three points: The lowest point of the clivus, the posterior-inferior point of C2, and the most dorsal indentation point at the ventral brain stem. Receiver operating characteristic (ROC) analysis was used to correlate the prognostic value of the TA with myelopathy. Pre- and post-operative TA values were compared for validation. (c) Results: The CVJ-pathology group had the largest mean TA (1.58 ± 0.47 cm2), compared to the RA and control groups (0.96 ± 0.31 and 1.05 ± 0.26, respectively). The ROC analysis calculated the cutoff-point for myelopathy as 1.36 cm2 with the area under the curve at 0.93. Of the 81 surgical patients, the TA was reduced (1.21 ± 0.37 cm2) at two-years post-operation compared to that at pre-operation (1.67 ± 0.51 cm2). Moreover, intra-operative complete reduction of the abnormalities could further decrease the TA to 1.03 ± 0.39 cm2. (4) Conclusions: The TA, a valid measurement to quantify compression at the CVJ and evaluate the efficacy of surgery, averaged 1.05 cm2 in normal patients, and 1.36 cm2 could be a cutoff-point for myelopathy and of clinical significance. |
Databáze: | OpenAIRE |
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