eMedicine Specialties > Radiology > Vascular/Interventional
Temporal Arteritis: Imaging
Updated: Oct 2, 2008
Radiography
Findings
Radiographs are of no use in diagnosing temporal arteritis.
Computed Tomography
Findings
Thickening of the arterial walls, stenosis, or occlusion may be demonstrated on contrast-enhanced CT scans.
Degree of Confidence
The findings can be observed in a variety of other disease processes.
False Positives/Negatives
CT commonly fails to depict mild inflammatory changes in the vessels. CT is not useful for the evaluation of small-vessel disease. In older persons, disease processes such as atherosclerotic disease are far more common than temporal arteritis and may result in similar CT findings.
Magnetic Resonance Imaging
Findings
MRI findings for temporal arteritis (giant cell arteritis) include loss of the normal flow void in affected vessels from occlusion or slow flow associated with disease. Enhancement of the arterial wall may be observed after the administration of gadolinium-based contrast material.22,23,24 Magnetic resonance angiography (MRA) may also demonstrate stenoses, irregularity of the vessel wall, and beading or thickening of the vessel wall.
Gadolinium-based contrast agents (gadopentetate dimeglumine [Magnevist], gadobenate dimeglumine [MultiHance], gadodiamide [Omniscan], gadoversetamide [OptiMARK], gadoteridol [ProHance]) have been linked to the development of nephrogenic systemic fibrosis (NSF) or nephrogenic fibrosing dermopathy (NFD). The disease has occurred in patients with moderate to end-stage renal disease after being given a gadolinium-based contrast agent to enhance MRI or MRA scans.
NSF/NFD is a debilitating and sometimes fatal disease. Characteristics include red or dark patches on the skin; burning, itching, swelling, hardening, and tightening of the skin; yellow spots on the whites of the eyes; joint stiffness with trouble moving or straightening the arms, hands, legs, or feet; pain deep in the hip bones or ribs; and muscle weakness. For more information, see the FDA Public Health Advisory or Medscape.
Degree of Confidence
The findings can be observed in a variety of other disease processes.
False Positives/Negatives
MRI commonly will miss mild inflammatory changes of vessels. MRI is not useful for the evaluation of small-vessel disease. In the elderly, disease processes such as atherosclerotic disease are far more common than temporal arteritis and may result in similar MRI findings.
Ultrasonography
Findings
Ultrasonography can be used to evaluate small vessels such as the temporal arteries. Findings include stenoses and occlusion of the vessels. A characteristic hypoechoic halo has been described as surrounding the affected vessel that disappears after corticosteroid therapy. Ultrasonography is also useful in guiding biopsy.
Degree of Confidence
These findings can be observed with a variety of other disease processes. Findings may be negative in patients with minimal involvement of the temporal arteries. Ultrasonography cannot be used to evaluate vessels such as intrathoracic arteries that are more amenable to angiography or MRI.
False Positives/Negatives
Though unusual, atherosclerotic disease involving the temporal arteries may have an appearance similar to that of temporal arteritis. Minimally involved vessels may appear normal.
Nuclear Imaging
Findings
Positron emission tomography (PET) scanning has been used to evaluate unusual involvement that cannot be evaluated by means of surgical biopsy or ultrasonography.
Degree of Confidence
PET cannot be used to distinguish between the increased uptake observed with temporal arteritis and that observed in polymyalgia rheumatica.
Angiography
Findings
Angiography is an invasive test with inherent risks associated with the procedure and with the administration of contrast material. Findings consist of the involvement of small-to-moderate vessels. Angiography can demonstrate areas of constriction, beading, and microaneurysm formation that are fairly specific for temporal arteritis (giant cell arteritis). The occlusion of vessels and stenoses that are amenable to treatment may also be observed.
The most common sites for abnormalities to occur anatomically and on imaging studies are in the distal subclavian, proximal axillary, brachial, brachiocephalic, and femoral arteries. Atherosclerotic disease is a common finding in the older population; however, narrowings observed with atherosclerotic disease are typically short, segmental, and irregular, whereas stenoses in temporal arteritis are smooth, long, segmental, and tapered.
Degree of Confidence
Similar findings may be observed in patients with Takayasu arteritis and in those with atherosclerotic disease. Temporal artery biopsy is more definitive than angiography, and it can be guided by the arteriographic findings.
False Positives/Negatives
False-negative results may occur in a few patients in whom the temporal arteries are not well visualized.
More on Temporal Arteritis |
| Overview: Temporal Arteritis |
Imaging: Temporal Arteritis |
| Follow-up: Temporal Arteritis |
| References |
| Further Reading |
| « Previous Page | Next Page » |
References
Danesh-Meyer HV, Savino PJ. Giant cell arteritis. Curr Opin Ophthalmol. Nov 2007;18(6):443-9. [Medline].
Schmidt WA. Takayasu and temporal arteritis. Front Neurol Neurosci. 2006;21:96-104. [Medline].
Tatò F, Hoffmann U. Giant cell arteritis: a systemic vascular disease. Vasc Med. 2008;13(2):127-40. [Medline].
Tehrani R, Ostrowski RA, Hariman R, Jay WM. Giant cell arteritis. Semin Ophthalmol. Mar-Apr 2008;23(2):99-110. [Medline].
Cantini F, Niccoli L, Nannini C, Bertoni M, Salvarani C. Diagnosis and treatment of giant cell arteritis. Drugs Aging. 2008;25(4):281-97. [Medline].
Thielen KR, Wijdicks EF, Nichols DA. Giant cell (temporal) arteritis: involvement of the vertebral and internal carotid arteries. Mayo Clin Proc. May 1998;73(5):444-6. [Medline].
Elliott PD, Baker HL Jr, Brown AL Jr. The superficial temporal artery angiogram. Radiology. Mar 1972;102(3):635-8. [Medline].
Hunder GG, Arend WP, Bloch DA. The American College of Rheumatology 1990 criteria for the classification of vasculitis. Introduction. Arthritis Rheum. Aug 1990;33(8):1065-7. [Medline].
Matteson EL, Gold KN, Bloch DA. Long-term survival of patients with giant cell arteritis in the American College of Rheumatology giant cell arteritis classification criteria cohort. Am J Med. Feb 1996;100(2):193-6. [Medline].
Devauchelle-Pensec V, Jousse S, Destombe C, Saraux A. Epidemiology, imaging, and treatment of giant cell arteritis. Joint Bone Spine. May 2008;75(3):267-72. [Medline].
Melson MR, Weyand CM, Newman NJ, Biousse V. The diagnosis of giant cell arteritis. Rev Neurol Dis. Summer 2007;4(3):128-42. [Medline].
Dellaripa PF, Eisenhauer AC. Bilateral percutaneous balloon angioplasty of the axillary arteries in a patient with giant cell arteritis and upper extremity ischemic symptoms not responsive to corticosteroids. J Rheumatol. Jul 1998;25(7):1429-33. [Medline].
Botella-Estrada R, Sammartin O, Martinez V. Magnetic resonance angiography in the diagnosis of a case of giant cell arteritis manifesting as scalp necrosis. Arch Dermatol. Jul 1999;135(7):769-71. [Medline].
Harada S, Mitsunobu F, Kodama F. Giant cell arteritis associated with rheumatoid arthritis monitored by magnetic resonance angiography. Intern Med. Aug 1999;38(8):675-8. [Medline].
Mitomo T, Funyu T, Takahashi Y. Giant cell arteritis and magnetic resonance angiography. Arthritis Rheum. Sep 1998;41(9):1702. [Medline].
Schmidt WA, Kraft HE, Vorpahl K. Color duplex ultrasonography in the diagnosis of temporal arteritis. N Engl J Med. Nov 6 1997;337(19):1336-42. [Medline].
Myers KA, Farquhar DR. Ultrasonography in temporal arteritis. N Engl J Med. Mar 12 1998;338(11):760; discussion 761. [Medline].
Schmidt WA, Kraft HE, Borkowski A. Color duplex ultrasonography in large-vessel giant cell arteritis. Scand J Rheumatol. 1999;28(6):374-6. [Medline].
Hunder GG, Weyand CM. Sonography in giant-cell arteritis. N Engl J Med. Nov 6 1997;337(19):1385-6. [Medline].
Puechal X, Chauveau M, Menkes CJ. Temporal Doppler-flow studies for suspected giant-cell arteritis. Lancet. Jun 3 1995;345(8962):1437-8. [Medline].
Blockmans D, Stroobants S, Maes A. Positron emission tomography in giant cell arteritis and polymyalgia rheumatica: evidence for inflammation of the aortic arch. Am J Med. Feb 15 2000;108(3):246-9. [Medline].
Anders HJ, Sigl T, Sander A. Gadolinium contrast magnetic resonance imaging of the temporal artery in giant cell arteritis. J Rheumatol. Oct 1999;26(10):2287-8. [Medline].
Bley TA, Uhl M, Carew J, Markl M, Schmidt D, Peter HH, et al. Diagnostic value of high-resolution MR imaging in giant cell arteritis. AJNR Am J Neuroradiol. Oct 2007;28(9):1722-7. [Medline].
Khoury JA, Hoxworth JM, Mazlumzadeh M, Wellik KE, Wingerchuk DM, Demaerschalk BM. The Clinical Utility of High Resolution Magnetic Resonance Imaging in the Diagnosis of Giant Cell Arteritis: A Critically Appraised Topic. Neurologist. Sep 2008;14(5):330-335. [Medline].
Nesher G, Sonnenblick M, Friedlander Y. Analysis of steroid related complications and mortality in temporal arteritis: a 15-year survey of 43 patients. J Rheumatol. Jul 1994;21(7):1283-6. [Medline].
Further Reading
Related eMedicine topics
Temporal (Giant Cell) Arteritis (Dermatology)
Temporal Arteritis (Emergency Medicine)
Temporal/Giant Cell Arteritis (Neurology)
Giant Cell Arteritis (Ophthalmology)
Arteritis, Giant Cell (Radiology)
Giant Cell Arteritis (Rheumatology)
Clinical guidelines
Diagnosis and treatment of headache .
Institute for Clinical Systems Improvement. 1998 Aug (revised 2007 Jan). 72 pages. NGC:005845
Treatment of primary headache: chronic daily headache. Standards of care for headache diagnosis and treatment .
National Headache Foundation. 2004. 8 pages. NGC:004143
Headache.
American College of Radiology. 1996 (revised 2006). 8 pages. NGC:005120
Keywords
temporal arteritis, Horton giant cell arteritis, Horton disease, Horton's disease, Horton's giant cell arteritis, giant cell aortic arteritis, giant cell aortitis, juvenile temporal arteritis, central nervous system vasculitis, CNS vasculitis, giant cell arteritis, systemic vasculitis, temporal arteries, GCA, cranial arteritis, granulomatous arteritis
Imaging: Temporal Arteritis