{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,5]],"date-time":"2026-03-05T12:58:07Z","timestamp":1772715487506,"version":"3.50.1"},"reference-count":7,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"12","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Stroke"],"published-print":{"date-parts":[[1998,12]]},"abstract":"<jats:p>\n            <jats:italic>Background and Purpose<\/jats:italic>\n            \u2014The cause of pretruncal (perimesencephalic) nonaneurysmal subarachnoid hemorrhage is not known. MRI of the brain or spine is often performed to exclude any other vascular abnormalities. Its diagnostic value is not known.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods<\/jats:italic>\n            \u2014We used MR imaging of the brain with routine sequences, gadolinium enhancement, and additional thin T1-weighted axial sections following a triple dose of contrast.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Results<\/jats:italic>\n            \u2014We performed MR imaging of the brain in 18 patients with a pretruncal nonaneurysmal subarachnoid hemorrhage. The focal nature of the subarachnoid hemorrhage exclusively in front of the brain stem was confirmed in 14 patients studied within 7 days of the ictus. No vascular abnormalities were found in 17 cases, including 14 patients with gadolinium enhancement. An incidental capillary telangiectasia was found in 1 patient. Fluid-attenuated inverse recovery MR additionally documented blood in the sulci due to cerebrospinal fluid recirculation of blood. Five patients underwent MR imaging of the spine, and no arteriovenous malformations were found.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            \u2014MR imaging did not reveal a source of pretruncal subarachnoid hemorrhage. The cost of MR imaging probably outweighs the benefit in the evaluation of this variant of subarachnoid hemorrhage.\n          <\/jats:p>","DOI":"10.1161\/01.str.29.12.2514","type":"journal-article","created":{"date-parts":[[2011,6,17]],"date-time":"2011-06-17T20:08:03Z","timestamp":1308341283000},"page":"2514-2516","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":30,"title":["MR Imaging in Pretruncal Nonaneurysmal Subarachnoid Hemorrhage"],"prefix":"10.1161","volume":"29","author":[{"given":"Eelco F. M.","family":"Wijdicks","sequence":"first","affiliation":[{"name":"From the Departments of Neurology (E.F.M.W.), Neurosurgery (W.I.S.), and Diagnostic Radiology (G.M.M.), Mayo Clinic, Rochester, Minn."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wouter I.","family":"Schievink","sequence":"additional","affiliation":[{"name":"From the Departments of Neurology (E.F.M.W.), Neurosurgery (W.I.S.), and Diagnostic Radiology (G.M.M.), Mayo Clinic, Rochester, Minn."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gary M.","family":"Miller","sequence":"additional","affiliation":[{"name":"From the Departments of Neurology (E.F.M.W.), Neurosurgery (W.I.S.), and Diagnostic Radiology (G.M.M.), Mayo Clinic, Rochester, Minn."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"e_1_3_1_1_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.35.4.493"},{"key":"e_1_3_1_2_2","first-page":"2572","volume":"28","year":"1997","unstructured":"Schievink WI, Wijdicks EFM. Pretruncal subarachnoid hemorrhage: an anatomically correct term for perimesencephalic hemorrhage. Stroke.. 1997;28:2572. Letter.","journal-title":"Stroke."},{"key":"e_1_3_1_3_2","first-page":"829","volume":"12","year":"1991","unstructured":"Rinkel GJ, Wijdicks EFM, Vermeulen M, Ramos LMP, Fanghe HJG, Hasan D, Meivers LC, van Gijn J. Nonaneurysmal perimesencephalic subarachnoid hemorrhage: CT and MR patterns that differ from aneurysmal rupture. AJNR Am J Neuroradiol.. 1991;12:829\u2013934.","journal-title":"AJNR Am J Neuroradiol."},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.49.2.634"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.202.3.9051036"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.25.7.8023370"},{"key":"e_1_3_1_7_2","unstructured":"Deveikis JP Allen RB Dickinson LD Ross DA. Cervical medullary arterial venous fistulae: a frequently unrecognized etiology of subarachnoid hemorrhage. Paper presented at: 31st Annual Meeting of the American Society of Neuroradiology; June 23\u201327 1996; Seattle Wash."}],"container-title":["Stroke"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ahajournals.org\/doi\/full\/10.1161\/01.STR.29.12.2514","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,12]],"date-time":"2024-05-12T22:38:54Z","timestamp":1715553534000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ahajournals.org\/doi\/10.1161\/01.STR.29.12.2514"}},"subtitle":["Is It Worthwhile?"],"short-title":[],"issued":{"date-parts":[[1998,12]]},"references-count":7,"journal-issue":{"issue":"12","published-print":{"date-parts":[[1998,12]]}},"alternative-id":["10.1161\/01.STR.29.12.2514"],"URL":"https:\/\/doi.org\/10.1161\/01.str.29.12.2514","relation":{},"ISSN":["0039-2499","1524-4628"],"issn-type":[{"value":"0039-2499","type":"print"},{"value":"1524-4628","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,12]]},"assertion":[{"value":"1998-07-13","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"1998-09-09","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"1998-12-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}