Correction: Cone-beam computed tomography with automated bone subtraction in preoperative embolization for pelvic bone tumors

Park, Dae Yong; Kim, Hyo Cheol; Chung, Jin Wook; Hur, Saebeom; Kim, Min Uk; Lee, Myungsu; Jae, Hwan Jun

doi:10.1371/journal.pone.0181645

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“…For example, Dae et al reported the usefulness of conebeam contrast-enhanced CT in preoperative embolization of hypervascular tumors in the pelvic bone. 11 In their study, vessel visibility was improved by digitally subtracting nearby bones and organs from threedimensionally reconstructed arteries. Alternatively, our study successfully adopted the subtraction technique to distinguish between contrasted metastasis, noncontrasted osseous metastasis, and degeneration.…”

Section: Discussionmentioning

confidence: 99%

“…[7][8][9] Additionally, there are several reports on the efficacy of cone-beam computed tomography arteriography (CTA) in preoperative embolization, which produced an excellent three-dimensional configuration of tumor-feeding blood vessels and required relatively few digital subtraction angiography (DSA) runs. 10,11 Chatani et al reported that CTA could identify the radiculomedullary artery (RMA), which supplies the spinal cord in the preoperative embolization of spinal tumors 12 ; further, subtraction CTA (s-CTA) has been used to visualize intracranial vessels during neurointervention procedures. 13 There have been studies on the utility of non-subtraction CTA (ns-CTA) for preoperative embolization; however, the usefulness of s-CTA for spinal tumors remains unclear.…”

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confidence: 99%

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Efficacy of Subtraction Computed Tomography Arteriography During Preoperative Embolization in Spinal Tumors

Makishima,

Yamamoto,

Yata

et al. 2024

Yonago Acta Med.

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Background This study aimed to evaluate the efficacy of subtraction computed tomography arteriography (s-CTA) during preoperative embolization in spinal tumors. Methods The study analyzed 17 vertebrae in 13 patients who underwent preoperative embolization before spinal fixation surgery for malignant spinal tumors to decrease blood loss at our hospital from 2019 to 2021. Their ages ranged from 56 to 88 years (average, 73.5 years). Metastatic bone tumors were most common, including five cases originating as lung carcinomas and three as renal cancers. After digital subtraction angiography of selected tumor-feeding arteries and nonsubtraction CTA (ns-CTA) were performed, s-CTA was conducted using data obtained from both procedures. A clarity score of the boundary between the normal bone and tumor was derived for each patient, which was then classified into four grades (good, 3 points; fair, 2 points; faint, 1 point; poor, 0 points) by two experienced radiologists, followed by a comparison between the s-CTA and ns-CTA groups using the Wilcoxon signedrank test. Results Clarity scores were significantly higher in the s-CTA group than in the ns-CTA group (P < 0.001). The agreement of Cohen's coefficients between the two radiologists was κ = 0.724 in s-CTA scoring and κ = 0.622 in ns-CTA scoring, which were moderately matched. Seven arteries were not embolized due to insufficient tumor contrast enhancement and their poor relation to the surgical invasion zone. No complications were observed during or after embolization. Conclusion S-CTA successfully distinguished between tumor and normal bone and may help avoid unnecessary embolization.

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Section: Discussionmentioning

confidence: 99%