Accuracy of turbo spin-echo diffusion-weighted imaging signal intensity measurements for the diagnosis of cholesteatoma

Özgen, Burçe; Bulut, Elif; Dolgun, Anıl; Bajin, Münir Demir; Sennaroḡlu, Levent

doi:10.5152/dir.2017.16024

Cited by 13 publications

(18 citation statements)

References 34 publications

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“…TSE-DWI reduces image distortion, and is thought to potentially be useful in image fusion to evaluate the T-stage of rectal cancer. A 180-degree radiofrequency refocus pulse leads to strong reduction of susceptibility artifacts [ 9 – 12 , 14 , 15 ]. The main problem with TSE-DWI was slow data acquisition, resulting in motion artifacts and signal decay.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, the parallel imaging technique improved these problems of single-shot TSE-DWI [9,10]. The utility of TSE-DWI has been reported in evaluations of middle ear, orbital/ neck lesions, lung and breast cancers, and hand lesions [11][12][13][14][15][16][17]. TSE-DWI may therefore improve T-staging of rectal cancer due to its comparatively low image distortion.…”

Section: Introductionmentioning

confidence: 99%

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T-staging of rectal cancer: Utility of single-shot turbo spin-echo diffusion-weighted imaging with T2-weighted images and fusion images

et al. 2021

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Purpose The purpose of this study was to evaluate the usefulness of turbo spin-echo (TSE) DWI with fusion images in the T-staging compared with T2-weighted imaging (T2WI) alone and conventional echo-planner imaging (EPI) DWI. Methods In this prospective study, 4-mm-thick axial EPI-DWI, TSE-DWI, and T2WI were performed with the same slice locations for 20 patients with rectal cancer. Fusion images of DWI and T2WI were created for both EPI-DWI and TSE-DWI. Ten readers independently diagnosed the T-stages and scored the degree of confidence referring to T2WI alone and then to DWI, T2WI, and fusion images (DWI+T2WI) for each EPI-DWI and TSE-DWI. Visual score assessments of image quality were performed for each DWI. Results Inter-observer agreement of T-staging for 10 readers was slight on T2WI alone but fair on EPI-DWI+T2WI and excellent on TSE-DWI+T2WI images. No readers gave higher confidence scores for T2WI compared to EPI/TSE-DWI+T2WI and for EPI-DWI+T2WI compared to TSE-DWI+T2WI. In seven pathologically-proven cases, poor, poor to slight, and fair to perfect agreements with the pathological T-stage were observed with T2WI alone, EPI-DWI+T2WI, and TSE-DWI+T2WI, respectively. All readers gave higher scores regarding image distortion and lower scores regarding image noise for TSE-DWI compared to EPI-DWI. For DWI utility, higher scores were assigned for TSE-DWI compared to EPI-DWI in 7 readers and there were no significant differences in the other 3 readers. Conclusion TSE-DWI images might be more appropriate for image fusion with T2WI and rectal cancer T-staging compared with EPI-DWI and T2WI alone.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

T-staging of rectal cancer: Utility of single-shot turbo spin-echo diffusion-weighted imaging with T2-weighted images and fusion images

et al. 2021

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“…TSE-DWI uses a 180° radio-frequency refocusing pulse for each measured echo, which explains the strong reduction of the susceptibility artifacts. 1 , 4 , 5 , 7 – 9 One of the problems with TSE-DWI has been motion artifacts resulting from the slower data acquisition. Nevertheless, combined use of the single-shot technique and parallel imaging technique, which is generally used for breath-hold ultrafast T 2 -weighted imaging, was recently enabled for this TSE-DWI sequence.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Thin-slice Coronal Single-shot Turbo Spin-echo Diffusion-weighted Imaging of the Hand: A Comparison with Conventional Echo-planar Diffusion-weighted Imaging

Ogawa

Nakagawa

Arai

et al. 2020

MRMS

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We prospectively evaluated thin-slice coronal turbo spin-echo (TSE) diffusion-weighted imaging (DWI) covering a larger area with the recently-developed techniques on a 3T MRI scanner, compared with echoplanar imaging (EPI)-DWI in patients undergoing routine hand MRI. Visual score assessment and apparent diffusion coefficient (ADC) measurement were performed for patients with suspected hand tumors. TSE-DWI was superior to EPI-DWI, with less image distortion. The visual score and ADC comparison assessments proved that the image noise of TSE-DWI was acceptable.breast and lung cancers, and spinal cord infarction. 1,5-10 To the best of our knowledge, however, there have been no TSE-DWI studies evaluating musculoskeletal lesions of the hand or foot. In addition, only one previous case report evaluated middle ear cholesteatoma using 2-mm-thick single-shot TSE-DWI, but ADC measurement was not performed and the acquisition time was not presented. 6 TSE-DWI using the recently-developed parallel imaging and single-shot technique on 3T MRI might yield a superior image quality and is already used clinically. However, the image quality of thin-slice TSE-DWI for the assessment of small musculoskeletal lesions has not yet been clarified. Thus, the purpose of this study was to prospectively examine whether the 2-mm-thick coronal TSE-DWI covering a larger area and small lesions could substitute for conventional EPI-DWI in patients undergoing routine hand MRI on a 3T scanner. Materials and Methods Study designThis prospective study was performed in accordance with the ethical standards of our Institutional Review Board. Written informed consent was obtained from the patients and their privacy was completely protected. Eligibility criteria for entry were: (1) adult patients suspected of having or being followed for a musculoskeletal tumor of the hand or finger, (2) patient agreement to cooperate, and (3) examination on a Philips 3T MRI scanner (Ingenia; Philips Medical Systems, Eindhoven, The Netherlands). The exclusion criteria were:(1) contraindications to MR (incompatible metal implants or pacemakers), and (2) motion artifacts and artifacts from unsuppressed fat on the images. The primary endpoint of the

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“…Studies by Schwartz et al found that cholesteatoma showed high intensity in DWI because of limited water fusion and partly because its keratin content produced high signal intensity in the T2 penetrating effect area of the diseased tissue and that the high signal intensity of cholesteatoma in DWI images had a higher diagnostic accuracy. 15,16 In the diagnosis of primary, residual, or recurrent cholesteatoma, the assessment of DWI is objective and reliable. In recent years, studies by Atsushi Fukuda and other scholars found that a high concentration of protein, 17,18 not cholesterol and triglyceride content, is the cause of high signal intensity in T1-weighted images of cholesteatoma.…”

Section: Discussionmentioning

confidence: 99%

“…A study by Williams et al found that cholesteatoma is avascular and cannot be enhanced with contrast agent in MRI, 14 whereas granulation tissue is poorly vascularized and is enhanced on delayed imaging. Studies by Schwartz et al found that cholesteatoma showed high intensity in DWI because of limited water fusion and partly because its keratin content produced high signal intensity in the T2 penetrating effect area of the diseased tissue and that the high signal intensity of cholesteatoma in DWI images had a higher diagnostic accuracy 15,16 . In the diagnosis of primary, residual, or recurrent cholesteatoma, the assessment of DWI is objective and reliable.…”

Section: Discussionmentioning

confidence: 99%

A case report of rare intraperitoneal cholesteatoma diagnosed and treated through multidisciplinary collaboration

Jiang

Chu

Chen

et al. 2020

Clinical Case Reports

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Accuracy of turbo spin-echo diffusion-weighted imaging signal intensity measurements for the diagnosis of cholesteatoma

Cited by 13 publications

References 34 publications

T-staging of rectal cancer: Utility of single-shot turbo spin-echo diffusion-weighted imaging with T2-weighted images and fusion images

T-staging of rectal cancer: Utility of single-shot turbo spin-echo diffusion-weighted imaging with T2-weighted images and fusion images

Evaluation of Thin-slice Coronal Single-shot Turbo Spin-echo Diffusion-weighted Imaging of the Hand: A Comparison with Conventional Echo-planar Diffusion-weighted Imaging

A case report of rare intraperitoneal cholesteatoma diagnosed and treated through multidisciplinary collaboration

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