Diffusion-Weighted Echoplanar MR Imaging of the Salivary Glands

Sumi, Misa; Takagi, Yukinori; Uetani, Masataka; Morikawa, Minoru; Hayashi, Kuniaki; Kabasawa, Hiroyuki; Aikawa, Katsuhiko; Nakamura, Takashi

doi:10.2214/ajr.178.4.1780959

Cited by 101 publications

(108 citation statements)

References 6 publications

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“…Many earlier studies employing ADC measurement have used the linear regression model and various sets of gradient b factors [6][7][8][9][10][11][12][13][14][15][16]18,19 . This model was also applied in this study, and three sets of gradient b factors (0 and 1000 sec/mm 2 , 500 and 1000 sec/mm 2 , and all b factors for WLR fit) were compared.…”

Section: Discussionmentioning

confidence: 99%

“…The mobility of water molecules in fluid is freer than that in solid biological tissues, and the ADC values of cysts are higher than those of benign or malignant tumors 8,9,12 . On the other hand, the histopathological characteristics of malignant tumors such as enlarged nuclei, hyper-chromatism, and hypercellularity, reduce the extracellular matrix and the diffusion space of water molecules [7][8][9][11][12][13]15,16,18 .…”

Section: Discussionmentioning

confidence: 99%

“…One method of evaluating DWI is to measure the apparent diffusion coefficient (ADC), and several researchers have reported the usefulness of this technique in the evaluation of head and neck lesions [7][8][9][10][11][12][13][14][15][16][17][18][19] . The ADC can be useful in characterizing both normal and pathological tissue as it reflects microscopic water diffusion and tissue perfusion in biologic tissues [2][3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…In many studies, linear regression and gradient b factors of 0 and 1000 sec/mm 2 have been applied to ADC measurement [7][8][9][11][12][13][14]17,18 . However, other gradient b factors have also been used for ADC measurement 8,10,15,16,19 . Therefore, as yet, no consensus exists regarding the optimum gradient b factors and methods to be applied to ADC measurement.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of various methods for quantification of apparent diffusion coefficient of head and neck lesions with HASTE diffusion-weighted MR imaging

Sakamoto

Sasaki

Otonari-Yamamoto

et al. 2012

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Objectives. The purposes of this retrospective study were to compare various methods of apparent diffusion coefficient (ADC) measurement for head and neck lesions in half-Fourier single-shot turbo spin-echo (HASTE) diffusion-weighted imaging (DWI) and determine the threshold ADC value for predicting malignancy.Study Design. HASTE DW images of 46 lesions (10 cysts, 14 benign tumors, and 22 malignant tumors) were studied retrospectively. The ADC values were compared between 0-1000 method, 500-1000 method, and weighted linear regression (WLR) fit.Results. The highest overall accuracies of 83.3%, 86.1%, and 88.9% were obtained when ADC values of 1.24 × 10 -3 mm 2 /sec (0-1000 method), 0.98 × 10 -3 mm 2 /sec (500-1000 method), and 1.23 × 10 -3 mm 2 /sec (WLR fit), respectively, were used for the threshold.Conclusions. The present results indicate that ADC measurement with HASTE DWI is useful in predicting malignancy of head and neck lesions. 3

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of various methods for quantification of apparent diffusion coefficient of head and neck lesions with HASTE diffusion-weighted MR imaging

Sakamoto

Sasaki

Otonari-Yamamoto

et al. 2012

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

View full text Add to dashboard Cite

show abstract

“…Furthermore, DWI has also been discussed as a way forward in the differentiation of benign and malignant tumors originating in musculoskeletal tissue 7,26) . DWI studies involving the knee joint 12) and salivary gland 21) have been also reported. However, to the best of our knowledge, there have been no reports on the use of DWI in the diagnosis of the temporomandibular joint diseases.…”

Section: Introductionmentioning

confidence: 99%

Parameters for Diffusion Weighted Magnetic Resonance Imaging for Temporomandibular Joint

Otonari

Wakoh

Sano

et al. 2006

Bull. Tokyo Dent. Coll.

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The purpose of this study was to determine optimum diffusion parameters for diffusion weighted imaging (DWI) techniques, including echo planer imaging (EPI), single-shot fast spin echo (SSFSE), and steady-state free precession (SSFP) in Magnetic Resonance Imaging (MRI) of the Temporomandibular Joint (TMJ). A polyethylene tube with distilled water was individually positioned at the external acoustic meatus foramen in each of three volunteers with normal healthy TMJs. Images were obtained using three types of DWI at differing diffusion parameters, b-factors, and diffusion moment. Signal intensity and imaging ability for various anatomical structures, including the distilled water, were evaluated from each image. The details of the anatomical structures of the TMJ were unidentifiable in the images produced with EPI and SSFSE, but were identifiable on the SSFP images. A diffusion moment value from 100mT/m*msec to 150 mT/m*msec for SSFP, in particular, restrained the signal intensity of the water, thereby protecting the comparably high image quality of the TMJ structure. In conclusion, only SSFP is capable of allowing interpretation of emerging pathologic conditions in the TMJ region, when used with a diffusion moment set at between from approximately 100mT/m*msec to 150 mT/m*msec.

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Advances in imaging of the lacrimal gland in Sjögren's syndrome: A narrative review

Zhong,

Zhang,

Ran

2023

J of Clinical Ultrasound

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Due to lymphocytic infiltration of the salivary and lacrimal glands, Sjogren's syndrome (SS), a systemic autoimmune illness that mostly affects the exocrine glands, causes dry mouth (xerostomia) and dry eyes (xerophthalmia). Additionally, SS is associated with various comorbidities such as cardiovascular diseases, infections, musculoskeletal diseases, and cancers. Among patients with SS, xerophthalmia frequently arises as a complication, leading to insufficient tear production or rapid tear evaporation, thereby causing discomfort, irritation, and a gritty sensation in the eyes. This article aims to examine recent advancements in the imaging of the lacrimal gland in Sjögren's syndrome and briefly discusses the utilization of various imaging examinations for the lacrimal gland in this particular disease.

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Diffusion-Weighted Echoplanar MR Imaging of the Salivary Glands

Abstract: Diffusion-weighted echoplanar MR imaging may reveal diseased states of the salivary glands.

Cited by 101 publications

References 6 publications

Comparison of various methods for quantification of apparent diffusion coefficient of head and neck lesions with HASTE diffusion-weighted MR imaging

Comparison of various methods for quantification of apparent diffusion coefficient of head and neck lesions with HASTE diffusion-weighted MR imaging

Parameters for Diffusion Weighted Magnetic Resonance Imaging for Temporomandibular Joint

Advances in imaging of the lacrimal gland in Sjögren's syndrome: A narrative review

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