Role of Anatomical Landmarks in Identifying Normal and Transitional Vertebra in Lumbar Spine Magnetic Resonance Imaging
| Autor: | S. Padmanaban, Venkatraman Indiran, Fouzal Hithaya, M. Alamelu, Devimeenal Jagannathan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty lcsh:Medicine Lumbar vertebrae Inferior vena cava 030218 nuclear medicine & medical imaging 03 medical and health sciences Iliolumbar ligament Magnetic resonance imaging 0302 clinical medicine medicine.artery medicine.ligament medicine Orthopedics and Sports Medicine Superior mesenteric artery Costal Ligaments medicine.diagnostic_test business.industry lcsh:R Anatomy Aortic bifurcation musculoskeletal system Trunk Conus medullaris medicine.anatomical_structure medicine.vein Clinical Study Surgery Radiology business 030217 neurology & neurosurgery |
| Zdroj: | Europe PubMed Central Asian Spine Journal Asian Spine Journal, Vol 11, Iss 3, Pp 365-379 (2017) |
| ISSN: | 1976-7846 1976-1902 |
| Popis: | Study DesignRetrospective study.PurposeIdentification of transitional vertebra is important in spine imaging, especially in presurgical planning. Pasted images of the whole spine obtained using high-field magnetic resonance imaging (MRI) are helpful in counting vertebrae and identifying transitional vertebrae. Counting vertebrae and identifying transitional vertebrae is challenging in isolated studies of lumbar spine and in studies conducted in low-field MRI. An incorrect evaluation may lead to wrong-level treatment. Here, we identify the location of different anatomical structures that can help in counting and identifying vertebrae.Overview of LiteratureMany studies have assessed the vertebral segments using various anatomical structures such as costal facets (CF), aortic bifurcation (AB), inferior vena cava confluence (IC), right renal artery (RRA), celiac trunk (CT), superior mesenteric artery root (SR), iliolumbar ligament (ILL) psoas muscle (PM) origin, and conus medullaris. However, none have yielded any consistent results.MethodsWe studied the locations of the anatomical structures CF, AB, IC, RRA, CT, SR, ILL, and PM in patients who underwent whole spine MRI at our department.ResultsIn our study, 81.4% patients had normal spinal segmentation, 14.7% had sacralization, and 3.8% had lumbarization. Vascular landmarks had variable origin. There were caudal and cranial shifts with respect to lumbarization and sacralization. In 93.8% of cases in the normal group, ILL emerged from either L5 alone or the adjacent disc. In the sacralization group, ILL was commonly seen in L5. In the lumbarization group, ILL emerged from L5 and the adjacent disc (66.6%). CFs were identified at D12 in 96.9% and 91.7% of patients in the normal and lumbarization groups, respectively. The PM origin was observed from D12 or D12–L1 in most patients in the normal and sacralization groups.ConclusionsCF, PM, and ILL were good identification markers for D12 and L5, but none were 100% accurate. |
| Databáze: | OpenAIRE |
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