Accurate registration of coronary arteries for volumetric CT digital subtraction angiography

Razeto, Marco; Matthews, James H.; Masood, Saad; Steel, Jill; Arakita, Kazumasa

doi:10.1117/12.2010931

Cited by 8 publications

(3 citation statements)

References 0 publications

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“…The new subtraction method described in the present study permits additional regional position matching to be performed after automatic position matching of the entire volume [11]. In this study, after the registration in the entire volume, only re-registration of once was done for each stent.…”

Section: Discussionmentioning

confidence: 99%

“…In this subtraction method, non-rigid registration of the entire volume is performed automatically, after which additional regional rigid registration can be performed in selected areas if required [11]. In the present study, automatic non-rigid registration was performed for the entire volume, followed by one additional regional rigid registration A 72-year-old man, the same patient as in Figure 1.…”

Section: Image Processing and Analysismentioning

confidence: 99%

See 1 more Smart Citation

Neck CTA with Deformable Registration and Subtraction Method: Evaluation in Patients with Stents

Higashi¹,

Kanzaki²,

Onishi³

et al. 2014

OMICS J Radiol

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Section: Discussionmentioning

confidence: 99%

Section: Image Processing and Analysismentioning

confidence: 99%

Neck CTA with Deformable Registration and Subtraction Method: Evaluation in Patients with Stents

Higashi¹,

Kanzaki²,

Onishi³

et al. 2014

OMICS J Radiol

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“…[7] With development of deformable registration algorithm, subtracted-CCTA could successfully remove stents and calcification from CCTA in order to better lumen visualization, and several studies investigated the performance of subtraction for calcification and stents with typical metal materials. [8][9][10] Recently, with government medical insurances policy changes to encourage using national vendors of stent with lower price, more and more patients were treated with Rapamycin-eluting coronary CoCr stents system in China. [11] Therefore, the aim of this study was to assess diagnostic performance of ISR using subtracted-CCTA for patients with CoCr stent, using ICA as reference standard.…”

Section: Introductionmentioning

confidence: 99%

The usefulness of subtraction coronary computed tomography angiography for in-stent restenosis assessment of patients with CoCr stent using 320-row area detector CT

Guo²,

Yang

et al. 2021

Medicine

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The aim of this study was to assess in-stent restenosis (ISR) of coronary artery for patients with CoCr stent using subtraction coronary computed tomography angiography (CCTA) with one-breath-hold scan on 320-row area detector CT, invasive coronary angiography (ICA) as clinical standard. Patients who were referred for CCTA from January 2020 to May 2021 were retrospectively analyzed. Pre-contrast and CCTA was performed with dedicated one-breath-hold subtraction scan protocol and post processing to get subtracted-CCTA image without stent. Subjective image qualities and diagnosable rate were analyzed for CCTA and subtracted-CCTA respectively. The ISR degree of each stent was evaluated both on CCTA and subtracted-CCTA images. The receiver-operating characteristic curve with sensitivity, specificity, accuracy of CCTA, and subtracted-CCTA in the diagnosis of ISR were calculated with ICA as reference. Forty patients with 85 CoCr coronary stents of 3 to 3.5 mm diameter with ICA confirmation within 1 month were finally included. Subtracted-CCTA showed more diagnosable segments of stent (91.76% [78/85]) than those of CCTA (50.59% [43/85]) ( P < .001). The subjective image quality score of CCTA was 2.23 ± 1.32 while 3.41 ± 0.90 on subtracted-CCTA ( P < .001). Both subtracted-CCTA and CCTA showed high consistency with ICA (Kappa = 0.795 and 0.918 respectively). The area under the curve was 0.607 for CCTA and 0.757 for subtracted-CCTA ( P < .001) for stent based diagnose, respectively. The sensitivity, specificity, accuracy of CCTA, and subtracted-CCTA were 90.0%, 97.0%, 95.3%, and 87.5%, 100.0%, 97.43%, respectively. Subtracted-CCTA showed improved diagnose performance for ISR, which potentially reduce further follow-up ICA procedures for patients with CoCr stents.

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A calcification subtraction method for postmortem coronary computed tomography angiography

Inokuchi,

Kojima,

Chiba

et al. 2024

Int J Legal Med

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Although coronary computed tomography (CT) angiography is a useful tool for evaluating coronary artery lesions both ante- and postmortem, accurate evaluation of the lumen is difficult when highly calcified lesions are present, owing to overestimation of stenosis caused by blooming and partial volume artifacts. In clinical practice, to overcome this diagnostic problem, a subtraction method has been devised to remove calcification by subtracting the precontrast image from the contrast image. In this report, we describe a calcification subtraction method using image analysis software for postmortem coronary CT angiography. This method was devised based on preliminary experimental results showing that the most accurate subtraction was achieved using images reconstructed with a narrower field of view and bone kernel, resulting in higher spatial resolution. This subtraction method allowed evaluation of lumen patency and the degree of stenosis on contrast-enhanced images in a verification using actual specimens where evaluation of the lumen had been difficult because of high calcification. The results were morphologically similar to the macroscopic findings. This method allows more rapid and reliable lesion retrieval and is expected to be useful for postmortem coronary angiography in forensic practice.

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Accurate registration of coronary arteries for volumetric CT digital subtraction angiography

Cited by 8 publications

References 0 publications

Neck CTA with Deformable Registration and Subtraction Method: Evaluation in Patients with Stents

Neck CTA with Deformable Registration and Subtraction Method: Evaluation in Patients with Stents

The usefulness of subtraction coronary computed tomography angiography for in-stent restenosis assessment of patients with CoCr stent using 320-row area detector CT

A calcification subtraction method for postmortem coronary computed tomography angiography

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