Evaluation of Diffusivity in the Anterior Lobe of the Pituitary Gland: 3D Turbo Field Echo with Diffusion-Sensitized Driven-Equilibrium Preparation

Hiwatashi, Akio; Yamada, Takashi; Togao, Osamu; Yamashita, Koji; Kikuchi, Kazufumi; Kobayashi, Koji; Ohga, Masahiro; Sonoda, Shinjiro; Honda, Hiroshi; Obara, Makoto

doi:10.3174/ajnr.a3620

Cited by 11 publications

(17 citation statements)

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“…The details of the DSDE-TFE are described elsewhere. 9,[15][16][17] The DSDE-TFE has two distinct components: the DSDE preparation and the segmented 3D TFE data acquisition. 17 The DSDE preparation is an extension of a motionsensitized driven-equilibrium (MSDE) preparation, which has been used for black-blood imaging of large vessels.…”

Section: Imaging Techniquementioning

confidence: 99%

“…2,5 Diffusion-weighted imaging (DWI) is widely used to diagnose tumours, inflammation and vascular disease in both intracranial and extracranial lesions. 3,4,[6][7][8][9][10][11][12][13][14][15][16] Previous studies also revealed the efficacy of DWI to evaluate orbital lesions including orbital tumours of adults 8,9 and children, 10 ocular adnexal lymphomas, 9,11 immunoglobulin G4 (IgG4)-related disease, 9 endophthalmitis 12 and optic nerve lesions. 13,14 However, it is sometimes difficult to evaluate intraorbital structures with echoplanar (EP) imaging, which is the most common imaging technique for DWI.…”

Section: Introductionmentioning

confidence: 99%

“…9,15-17 DSDE-TFE itself was originally reported to be one of the nerve sheath imaging techniques that can be used to minimize image distortion while reducing B0 and B1 inhomogeneity and eddy current effects 17,18 and was used to examine cholesteatoma, 15 pituitary gland, 16 orbital lymphoma and IgG4-related disease. 9 However, to the best of our knowledge, there has been no report evaluating intraocular retinoblastomas using DSDE-TFE.…”

Section: Introductionmentioning

confidence: 99%

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3D turbo field echo with diffusion-sensitized driven-equilibrium preparation technique (DSDE-TFE) versus echo planar imaging in evaluation of diffusivity of retinoblastoma

Hiwatashi¹,

Togao²,

Yamashita³

et al. 2016

BJR

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Makoto Obara is an employee of Philips Electronics Japan. He was not involved in data analysis in this study.Objective: Compared with echoplanar (EP) diffusionweighted imaging (DWI), three-dimensional (3D) turbo field echo with diffusion-sensitized driven-equilibrium (DSDE-TFE) preparation DWI obtains images with higher spatial resolution and less susceptibility artefacts. The purpose of this study was to evaluate the feasibility of DSDE-TFE to visualize retinoblastomas compared with EP imaging. Methods: This retrospective study was approved by our institutional review boards. Eight patients with retinoblastomas (five males and three females; age range 0-87 months; median 21 months) were studied. For the DSDE-TFE, motion-probing gradients (MPGs) were conducted at one direction with b-values of 0 and 500 s mm 22 and a voxel size of 1.5 3 1.5 3 1.5 mm 3 . For the EP imaging, MPGs were conducted at three directions with b-values of 0 and 1000 s mm 22 and a voxel size of 1.4 3 1.8 3 3 mm 3 . The apparent diffusion coefficients (ADCs) of each lesion were measured. Statistical analyses were performed with Pearson R and linear correlation coefficients. Results: Intraocular lesions were clearly visualized on the DSDE-TFE without obvious geometrical distortion, whereas all showed deformity on EP images. On the DSDE-TFE, the ADCs of the lesions ranged from 0.83 3 10 23 to 2.93 3 10 23 mm 2 s 21 (mean 6 standard deviation 1.73 6 0.73 3 10 23 mm 2 s 21 ). On the EP images, the ADCs ranged from 0.53 3 10 23 to 2.03 3 10 23 mm 2 s 21 (0.93 6 0.53 3 10 23 mm 2 s 21 ). There was a significant correlation in ADC measurement between the DSDE-TFE and EP imaging (r 5 0.81, p , 0.05). Conclusion: With its insensitivity to field inhomogeneity and high spatial resolution, the 3D DSDE-TFE technique enabled us to assess diffusivity in retinoblastomas. Advances in knowledge: DSDE-TFE could enable us to assess the ADC of retinoblastomas without obvious geometrical distortion.

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Section: Imaging Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D turbo field echo with diffusion-sensitized driven-equilibrium preparation technique (DSDE-TFE) versus echo planar imaging in evaluation of diffusivity of retinoblastoma

Hiwatashi¹,

Togao²,

Yamashita³

et al. 2016

BJR

View full text Add to dashboard Cite

show abstract

“…n this issue of the American Journal of Neuroradiology, you will find the article "Evaluation of Diffusivity in the Anterior Lobe of the Pituitary Gland: 3D Turbo Field Echo with Diffusion-Sensitized Driven-Equilibrium Preparation" by Hiwatashi et al 1 I enjoyed reading this article and found it to be a nice "proof of principle" regarding the use of "diffusion-sensitized driven-equilibrium turbo field echo" to image the anterior pituitary gland. 1 In my clinical practice, I have found diffusion-weighted imaging to have particular utility in neuroimaging…well beyond the classic assessment for acute brain ischemia or infarction or pyogenic abscess formation.…”

mentioning

confidence: 99%

“…1 In my clinical practice, I have found diffusion-weighted imaging to have particular utility in neuroimaging…well beyond the classic assessment for acute brain ischemia or infarction or pyogenic abscess formation. I like the idea of "squeezing out" as much information as possible from each of our MR images to help identify and characterize neuropathology.…”

mentioning

confidence: 99%