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Regions of Interest (ROIs) displayed on T1-weighted images of a control (a) and a welder (b). Color of the <t>ROI:</t> blue for substantia nigra, red for caudate, green for <t>globus</t> <t>pallidus,</t> and yellow for anterior prefrontal lobe. Slight T1 hyperintensities can be discerned in this welder.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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A) Single frame from an <t>ROI–dose-reduced</t> intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the <t>white</t> <t>circular</t> boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.
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Image Search Results


Regions of Interest (ROIs) displayed on T1-weighted images of a control (a) and a welder (b). Color of the ROI: blue for substantia nigra, red for caudate, green for globus pallidus, and yellow for anterior prefrontal lobe. Slight T1 hyperintensities can be discerned in this welder.

Journal: Neurotoxicology

Article Title: Association of MRI T1 Relaxation Time with Neuropsychological Test Performance in Manganese-Exposed Welders

doi: 10.1016/j.neuro.2017.05.010

Figure Lengend Snippet: Regions of Interest (ROIs) displayed on T1-weighted images of a control (a) and a welder (b). Color of the ROI: blue for substantia nigra, red for caudate, green for globus pallidus, and yellow for anterior prefrontal lobe. Slight T1 hyperintensities can be discerned in this welder.

Article Snippet: 3] Regions of interest (ROIs) Measurements of the average T1 values in the globus pallidus, substantia nigra, caudate nucleus, and anterior prefrontal lobe were made using circular ROI of 3 mm 2 diameter on T1 maps, using the ROI tool in Matlab and Osirix (Pixmeo, Switzerland).

Techniques: Control

T1 relaxation times by region of interest (ROI) and results of multivariate analysis of variance (MANOVA) between welders and controls

Journal: Neurotoxicology

Article Title: Association of MRI T1 Relaxation Time with Neuropsychological Test Performance in Manganese-Exposed Welders

doi: 10.1016/j.neuro.2017.05.010

Figure Lengend Snippet: T1 relaxation times by region of interest (ROI) and results of multivariate analysis of variance (MANOVA) between welders and controls

Article Snippet: 3] Regions of interest (ROIs) Measurements of the average T1 values in the globus pallidus, substantia nigra, caudate nucleus, and anterior prefrontal lobe were made using circular ROI of 3 mm 2 diameter on T1 maps, using the ROI tool in Matlab and Osirix (Pixmeo, Switzerland).

Techniques:

Correlation between manganese exposure (past 3 months) and T1 relaxation times by region of interest (ROI) for welders

Journal: Neurotoxicology

Article Title: Association of MRI T1 Relaxation Time with Neuropsychological Test Performance in Manganese-Exposed Welders

doi: 10.1016/j.neuro.2017.05.010

Figure Lengend Snippet: Correlation between manganese exposure (past 3 months) and T1 relaxation times by region of interest (ROI) for welders

Article Snippet: 3] Regions of interest (ROIs) Measurements of the average T1 values in the globus pallidus, substantia nigra, caudate nucleus, and anterior prefrontal lobe were made using circular ROI of 3 mm 2 diameter on T1 maps, using the ROI tool in Matlab and Osirix (Pixmeo, Switzerland).

Techniques:

A) Single frame from an ROI–dose-reduced intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the white circular boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.

Journal: AJNR. American journal of neuroradiology

Article Title: A patient dose-reduction technique for neuroendovascular image-guided interventions: Image quality comparison study

doi: 10.3174/ajnr.A5552

Figure Lengend Snippet: A) Single frame from an ROI–dose-reduced intervention (DRI) DSA run. Parent vessel morphology (C1), proximal vessels (C2) and distal vessels (C3) are visible (arrows).The position of the ROI is indicated by the white circular boundary. B) Single frame of ROI-DRI fluoroscopic roadmap. The microwire is seen leaving the guide catheter (C5) and inside the aneurysm (C4). The guide catheter tip is visible (C6). C) Single frame of ROI-DRI fluoroscopic roadmap. The guide tip is seen (C6). The distal tip of the microcatheter is seen inside the aneurysm (C7). D) Single frame of ROI-DRI fluoroscopic roadmap. The coil is visible inside the aneurysm (C8). The guide tip is visible (C6). In comparison to the RDI images shown in Supplemental Figure 2, the integral dose for each of these ROI-DRI images is 38% of the integral dose of the RDI images, thus achieving an integral dose reduction of 62%.

Article Snippet: The incident dose to each model was reduced using a 0.7 mm thick copper attenuator with a circular ROI hole (10 mm diameter) in the middle mounted inside the Toshiba Infinix C-arm (Toshiba America Medical Systems, Tustin, CA).

Techniques: Comparison