Diffusion-weighted echoplanar MR imaging of the salivary glands

AJR. American Journal of Roentgenology
Misa SumiTakashi Nakamura

Abstract

We determined the apparent diffusion coefficients of normal and dysfunctional salivary glands. A diffusion-weighted single-shot spin-echo type of echoplanar MR imaging was performed on the parotid or submandibular glands, or both, in 36 healthy subjects, 20 patients with Sjögren's syndrome, and six patients with sialoadenitis. The apparent diffusion coefficient of the salivary gland was calculated using two b factors (b = 500 and 1,000 sec/mm(2)). The apparent diffusion coefficient was lower in the parotid glands (0.28 x 10(-3) mm(2)/sec) than that of the submandibular glands (0.37 x 10(-3) mm(2)/sec). The apparent diffusion coefficient was increased in sialoadenitis, whereas it decreased with abscess formation. The apparent diffusion coefficients of the parotid glands in patients with Sjögren's syndrome correlated with the salivary flow rates but not with the sialographic gradings of the glands. We also found a correlation of the decreases in apparent diffusion coefficients with the severity of gland damage as assessed on T1-weighted MR images. Diffusion-weighted echoplanar MR imaging may reveal diseased states of the salivary glands.

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Citations

Mar 25, 2006·European Radiology·Ahmed Abdel Khalek Abdel RazekAli Tawfik
Jul 14, 2009·The Journal of Laryngology and Otology·J DoshiR De
Mar 25, 2005·AJR. American Journal of Roentgenology·Yosuke KawaiTakashi Nakamura
Sep 12, 2007·AJNR. American Journal of Neuroradiology·M SumiT Nakamura
Sep 22, 2012·AJNR. American Journal of Neuroradiology·M-C LeeM-K Chen
Jan 9, 2007·European Radiology·Harriet C Thoeny, Frederik De Keyzer
Mar 23, 2012·Radiology·Harriet C ThoenyAnn D King
Aug 23, 2006·The Bulletin of Tokyo Dental College·Takamichi OtonariTakuya Harada
Jun 15, 2010·Journal of Neuroradiology. Journal De Neuroradiologie·J Lechner GoyaultF Veillon
Mar 8, 2008·Journal of Neuroradiology. Journal De Neuroradiologie·Masayuki Maeda, Stephan E Maier
Aug 13, 2011·Journal of Magnetic Resonance Imaging : JMRI·Hiroki KatoHiroaki Hoshi
Dec 14, 2004·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Barbara BusselsWalter Van den Bogaert
Feb 2, 2006·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Shinji KitoTakeshi Ohba
Feb 11, 2004·Magnetic Resonance Imaging Clinics of North America·Gaurang V ShahSuresh K Mukherji
Apr 13, 2005·Otolaryngologic Clinics of North America·Kenneth J McCabe, David Rubinstein
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Mar 23, 2017·Journal of Magnetic Resonance Imaging : JMRI·Chen ChuZhengyang Zhou
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Apr 11, 2003·Magnetic Resonance Imaging Clinics of North America·Gaurang V Shah
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Oct 27, 2004·Journal of Magnetic Resonance Imaging : JMRI·Harriet C ThoenyRobert Hermans
Jun 23, 2005·Journal of Magnetic Resonance Imaging : JMRI·Yukinori TakagiTakashi Nakamura

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