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Usefulness of high-resolution three-dimensional proton density-weighted turbo spin-echo MRI in distinguishing a junctional dilatation from an intracranial aneurysm of the posterior communicating artery: a pilot study.

高分辨率三维质子密度加权涡轮自旋回波MRI在区分后交通动脉交界性扩张和颅内动脉瘤中的有用性: 一项初步研究。

  • 影响因子:2.98
  • DOI:10.1136/neurintsurg-2019-015149
  • 作者列表:"Kim S","Chung J","Cha J","Kim BM","Kim DJ","Kim YB","Lee JW","Huh SK","Park KY
  • 发表时间:2020-03-01
Abstract

BACKGROUND:Discriminating a junctional dilatation from a true saccular aneurysm is clinically important. PURPOSE:To evaluate the usefulness of high-resolution three-dimensional proton density-weighted turbo spin-echo magnetic resonance imaging (PD MRI) in distinguishing a junctional dilatation from an aneurysm of the posterior communicating artery (PcomA). METHODS:Eighty-two consecutive patients with 83 PcomA lesions, which were evaluated by time-of-flight (TOF) MR angiography (MRA), PD MRI, and digital subtraction angiography (DSA), were enrolled. These radiologic data were retrospectively and independently reviewed by two neurosurgeons, and each diagnosis based on TOF MRA, PD MRI, and DSA was compared. The diagnostic efficacy (interobserver agreement, intermodality agreement, and diagnostic performance) of PD MRI was compared with that of TOF MRA. RESULTS:PD MRI showed higher AC1 (Gwet's agreement coefficient, PD MRI: 0.8942, 95% CI 0.8204 to 0.968; TOF MRA: 0.7185, 95% CI 0.5753 to 0.8617) and prevalence-adjusted bias-adjusted kappa coefficient (PABAK) (PD MRI: 0.8554, TOF MRA: 0.5904) than TOF MRA for interobserver agreement. For intermodality agreement, PD MRI also showed higher AC1 (PD MRI: 0.9069, 95% CI 0.8374 to 0.9764; TOF MRA: 0.7983, 95% CI 0.6969 to 0.8996) and PABAK (PD MRI: 0.8735, TOF MRA: 0.7289) than TOF MRA. The diagnostic performance of PD MRI was statistically superior to that of TOF MRA in sensitivity, specificity, positive predictive value, and negative predictive value. CONCLUSIONS:PD MRI could provide excellent diagnostic accuracy and better information in distinguishing a junctional dilatation from a true saccular aneurysm of the PcomA compared with TOF MRA.

摘要

背景: 区分交界性扩张与真正的囊状动脉瘤在临床上很重要。 目的: 评价高分辨率三维质子密度加权涡轮自旋回波磁共振成像 (PD MRI) 在区分交界性扩张和后交通动脉动脉瘤 (PcomA) 中的应用价值。 方法: 对82例83个PcomA病灶进行飞行时间 (TOF) MR血管造影 (MRA) 、PD MRI和数字减影血管造影 (DSA) 检查。由两位神经外科医生对这些影像学资料进行回顾性和独立审查,并对基于TOF MRA、PD MRI和DSA的每个诊断进行比较。比较PD MRI与TOF MRA的诊断效能 (观察者间一致性、模态间一致性和诊断效能)。 结果: PD MRI显示较高的AC1 (Gwet 's协议系数,PD MRI: 0.8942,95% CI 0.8204至0.968; TOF MRA: 0.7185,95% CI CI 0.5753至0.8617) 和患病率调整偏差调整的kappa系数 (PABAK) (PD MRI: 0.8554,TOF MRA: 0.5904) TOF MRA为观察者间协议。对于模态间一致性,PD MRI也显示出比TOF MRA更高的AC1 (PD MRI: 0.9069,95% ci ci 0.8374至0.9764; TOF MRA: 0.7983,95%  CI 0.6969至0.8996) 和PABAK (PD MRI: 0.8735,TOF MRA: 0.7289)。PD MRI在敏感性、特异性、阳性预测值和阴性预测值方面均优于TOF MRA。 结论: 与TOF MRA相比,PD MRI可以提供良好的诊断准确性和更好的信息来区分交界性扩张与真正的囊状动脉瘤。

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影响因子:1.05
发表时间:2020-02-01
DOI:10.23736/S0021-9509.18.10206-0
作者列表:["Peters AS","Hatzl J","Bischoff MS","Böckler D"]

METHODS:BACKGROUND:Due to recent advances in endograft design and percutaneous access, technical success could be increased during endovascular aneurysm repair (EVAR). Beside EVAR, endovascular aneurysm sealing (EVAS) provides an alternative procedure to treat aneurysms. To compare the two methods, additional benchmark criteria should be evaluated: Screening time, dose area product (DAP), procedure time and contrast use. In this study these technical variables are analyzed for EVAS vs. EVAR in comparable patient cohorts. METHODS:It is a retrospective, single-center study. Only elective cases of infrarenal aortic aneurysms were included, all treated by the same surgeon (D.B.). Procedures were performed within the instructions for use without additional procedures. All operations were undertaken in a hybrid operating theatre. For EVAR, only the Medtronic Endurant® and the Gore C3 Excluder® were included. For EVAS the Nellix® from Endologix was used. RESULTS:Between 2012 and 2016, 67 patients were treated with EVAS and 40 with EVAR; of these 20 and 16 could be introduced into the study respectively. Median age was 73 and 72 years respectively (only men). The two groups were comparable in terms of BMI, GFR and ASA-status. Screening time was reduced for EVAS (10.6 vs. 14.5 min., P<0.01), while the DAP was not significantly different. Procedural time and contrast use were increased for EVAS (120 vs. 96 min., 120 vs. 79 mL, P<0.01). CONCLUSIONS:Especially the younger EVAS-procedure requires ongoing review in order to further reduce contrast agent. Reduced screening time for EVAS does not have a significant impact on radiation dose.

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影响因子:4.91
发表时间:2020-04-01
来源期刊:Annals of surgery
DOI:10.1097/SLA.0000000000003050
作者列表:["Karthaus EG","Vahl A","van der Werf LR","Elsman BHP","Van Herwaarden JA","Wouters MWJM","Hamming JF"]

METHODS:OBJECTIVE:To evaluate reasons to deviate from aneurysm diameter thresholds, and focus on the difference in how Dutch vascular surgical units (VSUs) perceive their deviation and their actual deviation. BACKGROUND:Guidelines recommend surgical treatment for asymptomatic abdominal aortic aneurysms (AAAs) with a diameter of at least 55 mm for men and 50 mm for women. We evaluate reasons to deviate from these guidelines, and focus on the difference in how Dutch vascular surgical units (VSUs) perceive their deviation and their actual deviation. METHODS:All patients undergoing elective AAA repair between 2013 and 2016 registered in the Dutch Surgical Aneurysm Audit (DSAA) were included. Surgery at diameters of <55 mm for men and <50 mm for women were considered guideline deviations. National deviation and hospital variation in deviation were evaluated over time. Questionnaires were distributed among all Dutch VSUs, inquiring for acceptable reasons for guideline deviation. VSUs were asked to estimate the guideline deviation percentage in their hospital which was then compared with their DSAA percentage. RESULTS:In all, 9039 patients were included. In 15%, we found guideline deviation, varying from 2% to 40% between VSUs. Over time, 21 VSUs were identified with a lower percentage of deviation than the national mean each year and 8 VSUs with a higher percentage. 44/60 VSUs completed the questionnaire. Most commonly reported reasons to deviate were concomitant large iliac diameter (91%) and saccular aneurysm (82%). The majority of the VSUs (77%) estimated their guideline deviation to be <5%. Eleven VSUs (25%) estimated their deviation concordant with their DSAA percentage, but 75% of VSUs underestimated their deviation. CONCLUSIONS:Dutch VSUs regularly deviate from the guidelines regarding aneurysm diameter, with variation between VSUs. Consensus exists amongst VSUs on acceptable reasons for guideline deviations; however, the majority underestimates their actual deviation percentage.

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影响因子:1.05
发表时间:2020-04-01
DOI:10.23736/S0021-9509.18.10639-2
作者列表:["Kodama H","Takahashi S","Okazaki T","Morita S","Go S","Watanabe M","Yamane Y","Katayama K","Kurosaki T","Sueda T"]

METHODS:BACKGROUND:Spinal cord ischemia (SCI) and paraplegia are complications of surgery for type A acute aortic dissection (TAAAD). Since the segmental arteries play a key role in SCI, this study evaluated the association between SCI and false lumen segmental arteries (FLSAs: segmental arteries originating from the false lumen). METHODS:The study included 101 consecutive TAAAD patients (mean age, 66±13; range, 34-89 years) who underwent surgery from January 2011 to April 2017. The diagnosis of TAAAD and the number of FSLAs were determined by preoperative computed tomography (CT). Patients were divided into two groups according to the number of FLSAs at the Th9-L2 level: Group A (N.=13), ≥8 FLSAs; and group B (N.=88), ≤7 FLSAs. Preoperative, perioperative, and postoperative findings were compared between the groups, and risk factors for SCI were evaluated. RESULTS:The frequency of preoperative paralysis was significantly higher in Group A than Group B (P=.0070). The overall incidence of postoperative SCI was 8% (8/101) and significantly higher in Group A than Group B (5/13 [45%] vs. 3/88 (4%), P<0.0001). Hospital mortality was 8% (8/101) and significantly higher in Group A than Group B (3/13 [23%] vs. 5/88 [6%], P=.0302). Multivariate analysis showed that the independent risk factors for SCI were ≥8 FLSAs at Th9-L2 (odds ratio [OR], 20.4; 95% confidence interval [95% CI], 3.34-124.9, P=0.0011) and diabetes mellitus (OR, 22.3; 95% CI, 1.69-294.5; P=0.0184). CONCLUSIONS:In patients who underwent surgery for TAAAD, ≥8 FLSAs at the Th9-L2 levels on preoperative CT was a risk factor for SCI.

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动脉瘤方向

动脉瘤是由于动脉壁的病变或损伤,形成动脉壁局限性或弥漫性扩张或膨出,以膨胀性、搏动性肿块为主要表现,可以发生在动脉系统的任何部位,而以肢体主干动脉、主动脉和颈动脉较为常见。

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