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Published on: May 26, 2015
Persistent primitive olfactory artery: MR angiographic diagnosis.
Akira Uchino1, Naoko Saito, Eito Kozawa
1Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan. auchino@saitama-med.ac.jp
Surgical and Radiologic Anatomy : SRA
|November 10, 2010
Summary
The persistent primitive olfactory artery (PPOA) occurs in 0.14% of individuals, often with unique anatomical variations like aneurysms or connections to the middle cerebral artery (MCA). This study determined its incidence and characteristics.
Area of Science:
- Neuroanatomy
- Vascular Neurology
Background:
- Persistent primitive olfactory artery (PPOA) is a rare anatomical variation of the anterior cerebral artery (ACA).
- Its incidence and characteristic imaging features on MR angiography are not well-documented.
Purpose of the Study:
- To determine the incidence of PPOA in a patient cohort.
- To investigate the characteristic features of PPOA on MR angiography.
Main Methods:
- Retrospective review of 3,626 cranial MR angiographic studies.
- Identification and collection of cases with PPOA from institutional and affiliated hospital records.
Main Results:
- 14 cases of PPOA were identified (0.14% incidence at the institution).
- Variations included aneurysms at the hairpin turn and PPOA connection to accessory middle cerebral artery (MCA).
- No significant laterality was observed, with rare instances of bilaterality.
Conclusions:
- The incidence of PPOA on MR angiography is 0.14%.
- Observed variations include aneurysms and accessory MCA connections.
- PPOA demonstrates no significant laterality and rare bilaterality.
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