Temporal lobe anatomy: eight imaging signs to facilitate interpretation of MRI

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Purpose: The temporal lobe is anatomically and functionally complex. However, relatively few radiologic signs are described to facilitate recognition of temporal lobe sulci and gyri in clinical practice. We devised and tested 8 radiologic signs of temporal lobe anatomy. Methods: Images from volumetric magnetization-prepared rapid gradient-echo imaging were analyzed of 100 temporal lobes from 26 female and 24 male patients. Patient age ranged from 1 to 79 years (mean 19 years; standard deviation 16 years). Standardized axial, coronal, and sagittal planes were evaluated and cross-referenced. Eight signs to delineate the superior temporal gyrus, Heschl gyrus (HG), parahippocampal gyrus, rhinal sulcus, collateral sulcus proper, or the occipitotemporal sulcus, or a combination, were evaluated in the sagittal or axial plane. Two neuroradiologists independently evaluated each sign; the sign was considered present only with positive reader agreement. Results: All 8 signs were present in most patients. The most frequent signs were the posterior insular corner to identify HG in the axial plane (100 %), pointed STG to identify STG in the axial plane (98 %), and parahippocampal Y to identify the posterior parahippocampal gyrus in the sagittal plane (98 %). The frequencies were similar between the right and left cerebral hemispheres. Conclusions: Temporal lobe gyri and sulci can be reliably identified in multiple planes using anatomic signs.

Original languageEnglish (US)
Pages (from-to)433-443
Number of pages11
JournalSurgical and Radiologic Anatomy
Issue number4
StatePublished - May 1 2016


  • Collateral sulcus
  • Fusiform gyrus
  • Heschl gyrus
  • Lateral occipitotemporal gyrus
  • Occipitotemporal sulcus
  • Parahippocampal gyrus

ASJC Scopus subject areas

  • Anatomy
  • Surgery
  • Pathology and Forensic Medicine
  • Radiology Nuclear Medicine and imaging


Dive into the research topics of 'Temporal lobe anatomy: eight imaging signs to facilitate interpretation of MRI'. Together they form a unique fingerprint.

Cite this