Shape-appearance constrained segmentation and separation of vein and artery in pulsatile tinnitus patients based on MR angiography and flow MRI

Wang, Yan; Kao, Evan; Zhang, Yue; Tian, Bing; Gong, Jingshan; Faraji, Farshid; Haraldsson, Henrik; Amans, Matthew R; Saloner, David; Liu, Jing

doi:10.1016/j.mri.2019.05.026

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…However, many studies have reported higher performance of vein imaging using multispectral light sources as suggested in this study [15][16][17][18]. Clearer images can be obtained by combining different reflection images because the reflection of light sent at different Research DSI [28] 0.88 ± 3.40 [29] 0.89 ± 2.84 [30] 0.88 ± 0.03 [31] 0.94 ± 0.03 [32] 0.91 ± 5.31 Proposed Study 0.92 ± 2.10 wavelengths is also different. In many studies, vein imaging platforms have been integrated either to the glasses worn on the user's head [13] or to the mobile phone [19][20][21] that must be held by a hand, without being fixed to a place.…”

Section: Discussionmentioning

confidence: 78%

“…It can be seen the experimental imaging results of the first person in Fig. 4 PSNR is one of the commonly used metric for the evaluation of any enhanced medical images [23][24][25][26], and DSI is one of the widely used another metric for the evaluation of segmented medical images [27][28][29][30], it was calculated as…”

Section: Resultsmentioning

confidence: 99%

“…In one study [28], the authors segmented the skin lesions and reported the DSI value as 0.88 ± 3.4. Some authors performed vein segmentation in their studies and reported DSI as 0.89 ± 2.84, 0.88 ± 0.03, 0.94 ± 0.03 respectively [29][30][31]. In another study [32], the authors reported a 90.67 ± 5.31 DSI value by performing aortic segmentation.…”

Section: Discussionmentioning

confidence: 98%

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A portable multispectral vein imaging system

Özkan

Aydin

Ozcan

et al. 2023

Journal of Electrical Engineering

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Phlebotomy may cause unnecessary injuries to a patient whose veins are not easily visible to a healthcare professional. To mitigate this problem we designed a new system to image subcutaneous veins. Multispectral images were obtained using a microprocessor, an IR (infrared) camera, different wavelengths of NIR (near-infrared) sources, and an IR band-pass filter. Raw vein images were enhanced, colored, and displayed on a monitor using an easy-to-use interface. The mean dice similarity index (DSI) between the vein border specified by a doctor on the raw images manually and the automated segmented by the proposed system is determined as 0.92 ± 2.1 for 20 subjects. Also, the average peak signal-to-noise ratio (PSNR) obtained a high value of 68.37 ± 1.56 from the enhanced image. Phlebotomists can easily observe the subcutaneous veins in real-time with the three different options using the proposed device. As a result, this study advances the vein imaging field which has the potential to reduce injury to the patient during venipuncture.

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Section: Discussionmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 98%

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A portable multispectral vein imaging system

Özkan

Aydin

Ozcan

et al. 2023

Journal of Electrical Engineering

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“…CTA. The lumen and outer wall were also semi-automatically segmented from CTA using a level set shape prior segmentation method (LSSPM) [27], utilizing an elliptical shape prior. This method optimally selects the contours by adding an ellipse term in the classical level set equation, directing the segmentation result to resemble an ellipse (shape prior).…”

Section: Computer-aided Segmentationmentioning

confidence: 99%

Computer-aided quantification of non-contrast 3D black blood MRI as an efficient alternative to reference standard manual CT angiography measurements of abdominal aortic aneurysms

Wang

Tian

Xiong

et al. 2021

European Journal of Radiology

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Background: Non-contrast 3D black blood MRI is a promising tool for abdominal aortic aneurysm (AAA) surveillance, permitting accurate aneurysm diameter measurements needed for patient management. Purpose: To evaluate whether automated AAA volume and diameter measurements obtained from computeraided segmentation of non-contrast 3D black blood MRI are accurate, and whether they can supplant reference standard manual measurements from contrast-enhanced CT angiography (CTA). Materials and Methods: Thirty AAA patients (mean age, 71.9 ± 7.9 years) were recruited between 2014 and 2017. Participants underwent both non-contrast black blood MRI and CTA within 3 months of each other. Semiautomatic (computer-aided) MRI and CTA segmentations utilizing deformable registration methods were compared against manual segmentations of the same modality using the Dice similarity coefficient (DSC). AAA lumen and total aneurysm volumes and AAA maximum diameter, quantified automatically from these segmentations, were compared against manual measurements using Pearson correlation and Bland-Altman analyses. Finally, automated measurements from non-contrast 3D black blood MRI were evaluated against manual CTA measurements using the Wilcoxon test, Pearson correlation and Bland-Altman analyses. Results: Semi-automatic segmentations had excellent agreement with manual segmentations (lumen DSC: 0.91 ± 0.03 and 0.94 ± 0.03; total aneurysm DSC: 0.92 ± 0.02 and 0.94 ± 0.03, for black blood MRI and CTA, respectively). Automated volume and maximum diameter measurements also had excellent correlation to their manual counterparts for both black blood MRI

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Clinical Neuroimaging in the Evaluation of Tinnitus

Schuknecht,

Kleinjung

2024

Textbook of Tinnitus

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Shape-appearance constrained segmentation and separation of vein and artery in pulsatile tinnitus patients based on MR angiography and flow MRI

Cited by 4 publications

References 25 publications

A portable multispectral vein imaging system

A portable multispectral vein imaging system

Computer-aided quantification of non-contrast 3D black blood MRI as an efficient alternative to reference standard manual CT angiography measurements of abdominal aortic aneurysms

Clinical Neuroimaging in the Evaluation of Tinnitus

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