1. Carville S, Padhi S, Reason T, Underwood M. Guideline Development Group. Diagnosis and management of headaches in young people and adults: summary of NICE guidance. BMJ. 2012; 345:e5765.
Article
2. Kim BK, Chu MK, Lee TG, Kim JM, Chung CS, Lee KS. Prevalence and impact of migraine and tension-type headache in Korea. J Clin Neurol. 2012; 8:204–211.
Article
3. Duncan CW, Watson DP, Stein A. Guideline Development Group. Diagnosis and management of headache in adults: summary of SIGN guideline. BMJ. 2008; 337:a2329.
Article
4. Cho WS, Kim JE, Park SQ, Ko JK, Kim DW, Park JC, et al. Korean clinical practice guidelines for aneurysmal subarachnoid hemorrhage. J Korean Neurosurg Soc. 2018; 61:127–166.
Article
5. Edlow JA, Caplan LR, O'Brien K, Tibbles CD. Diagnosis of acute neurological emergencies in pregnant and post-partum women. Lancet Neurol. 2013; 12:175–185.
Article
6. Ramchandren S, Cross BJ, Liebeskind DS. Emergent headaches during pregnancy: correlation between neurologic examination and neuroimaging. AJNR Am J Neuroradiol. 2007; 28:1085–1087.
Article
7. Expert Panel on MR Safety. Kanal E, Barkovich AJ, Bell C, Borgstede JP, Bradley WG Jr, et al. ACR guidance document on MR safe practices: 2013. J Magn Reson Imaging. 2013; 37:501–530.
9. Mortimer AM, Bradley MD, Likeman M, Stoodley NG, Renowden SA. Cranial neuroimaging in pregnancy and the post-partum period. Clin Radiol. 2013; 68:500–508.
Article
12. Harling DW, Peatfield RC, Van Hille PT, Abbott RJ. Thunderclap headache: is it migraine? Cephalalgia. 1989; 9:87–90.
Article
13. Linn FH, Wijdicks EF, Van der Graaf Y, Weerdesteyn-van Vliet FA, Bartelds AI, Van Gijn J. Prospective study of sentinel headache in aneurysmal subarachnoid haemorrhage. Lancet. 1994; 344:590–593.
Article
14. Lledo A, Calandre L, Martinez-Menendez B, Perez-Sempere A, Portera-Sanchez A. Acute headache of recent onset and subarachnoid hemorrhage: a prospective study. Headache. 1994; 34:172–174.
Article
15. Van der Wee N, Rinkel GJ, Hasan D, Van Gijn J. Detection of subarachnoid haemorrhage on early CT: is lumbar puncture still needed after a negative scan? J Neurol Neurosurg Psychiatry. 1995; 58:357–359.
Article
16. Al-Shahi R, White PM, Davenport RJ, Lindsay KW. Subarachnoid haemorrhage. BMJ. 2006; 333:235–240.
Article
17. Suarez JI, Tarr RW, Selman WR. Aneurysmal subarachnoid hemorrhage. N Engl J Med. 2006; 354:387–396.
Article
18. Jayaraman MV, Mayo-Smith WW, Tung GA, Haas RA, Rogg JM, Mehta NR, et al. Detection of intracranial aneurysms: multi-detector row CT angiography compared with DSA. Radiology. 2004; 230:510–518.
Article
19. McCormack RF, Hutson A. Can computed tomography angiography of the brain replace lumbar puncture in the evaluation of acute-onset headache after a negative noncontrast cranial computed tomography scan? Acad Emerg Med. 2010; 17:444–451.
Article
20. Rana AK, Turner HE, Deans KA. Likelihood of aneurysmal subarachnoid haemorrhage in patients with normal unenhanced CT, CSF xanthochromia on spectrophotometry and negative CT angiography. J R Coll Physicians Edinb. 2013; 43:200–206.
Article
21. Douglas AC, Wippold FJ 2nd, Broderick DF, Aiken AH, Amin-Hanjani S, Brown DC, et al. ACR appropriateness criteria headache. J Am Coll Radiol. 2014; 11:657–667.
Article
22. Silbert PL, Mokri B, Schievink WI. Headache and neck pain in spontaneous internal carotid and vertebral artery dissections. Neurology. 1995; 45:1517–1522.
Article
23. Jeong HW, Seo JH, Kim ST, Jung CK, Suh SI. Clinical practice guideline for the management of intracranial aneurysms. Neurointervention. 2014; 9:63–71.
Article
24. Becker WJ, Findlay T, Moga C, Scott NA, Harstall C, Taenzer P. Guideline for primary care management of headache in adults. Can Fam Physician. 2015; 61:670–679.
25. National Clinical Guideline Centre (UK). Headaches: Diagnosis and Management of Headaches in Young People and Adults. London: Royal College of Physicians (UK);2012.
26. Sempere AP, Porta-Etessam J, Medrano V, Garcia-Morales I, Concepción L, Ramos A, et al. Neuroimaging in the evaluation of patients with non-acute headache. Cephalalgia. 2005; 25:30–35.
Article
27. Becker LA, Green LA, Beaufait D, Kirk J, Froom J, Freeman WL. Use of CT scans for the investigation of headache: a report from ASPN, Part 1. J Fam Pract. 1993; 37:129–134.
28. Demaerel P, Boelaert I, Wilms G, Baert AL. The role of cranial computed tomography in the diagnostic workup of headache. Headache. 1996; 36:347–348.
Article
29. Jordan JE, Ramirez GF, Bradley WG, Chen DY, Lightfoote JB, Song A. Economic and outcomes assessment of magnetic resonance imaging in the evaluation of headache. J Natl Med Assoc. 2000; 92:573–578.
30. Mitchell CS, Osborn RE, Grosskreutz SR. Computed tomography in the headache patient: is routine evaluation really necessary? Headache. 1993; 33:82–86.
Article
31. Reinus WR, Erickson KK, Wippold FJ 2nd. Unenhanced emergency cranial CT: optimizing patient selection with univariate and multivariate analyses. Radiology. 1993; 186:763–768.
Article
32. Weingarten S, Kleinman M, Elperin L, Larson EB. The effectiveness of cerebral imaging in the diagnosis of chronic headache. Arch Intern Med. 1992; 152:2457–2462.
Article
33. Cull RE. Investigation of late-onset migraine. Scott Med J. 1995; 40:50–52.
Article
34. Frishberg BM. The utility of neuroimaging in the evaluation of headache in patients with normal neurologic examinations. Neurology. 1994; 44:1191–1197.
Article
35. Nawaz M, Amin A, Qureshi AN, Jehanzeb M. Audit of appropriateness and outcome of computed tomography brain scanning for headaches in paediatric age group. J Ayub Med Coll Abbottabad. 2009; 21:91–93.
36. Tsushima Y, Endo K. MR imaging in the evaluation of chronic or recurrent headache. Radiology. 2005; 235:575–579.
Article
37. Wang HZ, Simonson TM, Greco WR, Yuh WT. Brain MR imaging in the evaluation of chronic headache in patients without other neurologic symptoms. Acad Radiol. 2001; 8:405–408.
Article
38. Vernooij MW, Ikram MA, Tanghe HL, Vincent AJ, Hofman A, Krestin GP, et al. Incidental findings on brain MRI in the general population. N Engl J Med. 2007; 357:1821–1828.
Article
39. Forsyth PA, Posner JB. Headaches in patients with brain tumors: a study of 111 patients. Neurology. 1993; 43:1678–1683.
Article
40. Evers S, Afra J, Frese A, Goadsby PJ, Linde M, May A, et al. EFNS guideline on the drug treatment of migraine--revised report of an EFNS task force. Eur J Neurol. 2009; 16:968–981.
41. Hoang JK, Branstetter BF 4th, Gafton AR, Lee WK, Glastonbury CM. Imaging of thyroid carcinoma with CT and MRI: approaches to common scenarios. Cancer Imaging. 2013; 13:128–139.
Article
42. Edlow JA, Panagos PD, Godwin SA, Thomas TL, Decker WW. American College of Emergency Physicians. Clinical policy: critical issues in the evaluation and management of adult patients presenting to the emergency department with acute headache. Ann Emerg Med. 2008; 52:407–436.
Article
43. Meurer WJ, Walsh B, Vilke GM, Coyne CJ. Clinical guidelines for the emergency department evaluation of subarachnoid hemorrhage. J Emerg Med. 2016; 50:696–701.
Article
44. Mitsikostas DD, Ashina M, Craven A, Diener HC, Goadsby PJ, Ferrari MD, et al. European Headache Federation consensus on technical investigation for primary headache disorders. J Headache Pain. 2015; 17:5.
Article