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1.
《Journal of Cardiovascular Computed Tomography》2022,16(4):319-326
BackgroundDiabetes mellitus is a major risk factor for coronary artery disease (CAD) and may provoke structural and functional changes in coronary vasculature. The coronary volume to left ventricular mass (V/M) ratio is a new anatomical parameter capable of revealing a potential physiological imbalance between coronary vasculature and myocardial mass. The aim of this study was to examine the V/M derived from coronary computed tomography angiography (CCTA) in patients with diabetes.MethodsPatients with clinically suspected CAD enrolled in the ADVANCE (Assessing Diagnostic Value of Non-invasive FFRCT in Coronary Care) registry and known diabetic status were included. Coronary artery volume and left ventricular myocardial mass were analyzed from CCTA and the V/M ratio was calculated and compared between patients with and without diabetes.ResultsOf the 3053 patients (age 66 ?± ?10 years; 66% male) with known diabetic status, diabetes was present in 21.9%. Coronary volume was lower in patients with diabetes compared to those without diabetes (2850 ?± ?940 ?mm3 vs. 3040 ?± ?970 ?mm3, p ?< ?0.0001), whereas the myocardial mass was comparable between the 2 groups (122 ?± ?33 ?g vs. 122 ?± ?32 ?g, p ?= ?0.70). The V/M ratio was significantly lower in patients with diabetes (23.9 ?± ?6.8 ?mm3/g vs. 25.7 ?± ?7.5 ?mm3/g, p ?< ?0.0001). Among subjects with obstructive CAD (n ?= ?2191, 24.0% diabetics) and non-obstructive CAD (16.7% diabetics), the V/M ratio was significantly lower in patients with diabetes compared to those without (23.4 ?± ?6.7 ?mm3/g vs. 25.0 ?± ?7.3 ?mm3/g, p ?< ?0.0001 and 25.6 ?± ?6.9 ?mm3/g vs. 27.3 ?± ?7.6 ?mm3/g, respectively, p ?= ?0.006).ConclusionThe V/M ratio was significantly lower in patients with diabetes compared to non-diabetics, even after correcting for obstructive coronary stenosis. The clinical value of the reduced V/M ratio in diabetic patients needs further investigation. 相似文献
2.
《The British journal of oral & maxillofacial surgery》2022,60(4):499-506
The aim of this study was to carry out a retrospective multicentre study comparing the morphological outcome of 8 techniques used for the management of sagittal synostosis versus a large cohort of control patients. Computed tomographic (CT) images were obtained from children CT-scanned for non-craniosynostosis related events (n = 241) and SS patients at preoperative and postoperative follow-up stages (n = 101). No significant difference in morphological outcomes was observed between the techniques considered in this study. However, the majority of techniques showed a tendency for relapse. Further, the more invasive procedures at older ages seem to lead to larger intracranial volume compared to less invasive techniques at younger ages. This study can be a first step towards future multicentre studies, comparing surgical results and offering a possibility for objective benchmarking of outcomes between methods and centres. 相似文献
3.
ObjectivesThis study was conducted to compare the healing response of localized gingival recession defects treated with a coronally advanced flap (CAF) and either an amnion allograft membrane (AM) or a connective tissue graft (CTG).MethodsGingival recession defects were surgically created in six healthy mongrel dogs at the labial root surface of the maxillary canines, bilaterally. Using a split mouth design, the defects were treated with CAF and either AM (CAF/AM) or CTG (CAF/CTG). Three animals for each group were scarified at 1 and 3 months. Segments containing the defects were prepared for histological and histometric analysis.ResultsBoth techniques showed similar clinical findings with adequate root coverage. Histologically, healing was characterized by the formation of new cementum and new connective tissue attachment in the CAF/AM group; in the CAF/CTG group, healing was characterized by junctional epithelium, coronally, and connective tissue fibers parallel to the root surface, apically. Histometrically, the CAF/AM group revealed a substantially shorter epithelial length and a longer, new cementum compared with those of the CAF/CTG group after a healing period of 3 months.ConclusionsWithin the limits of this study, we concluded that the AM allograft could promote periodontal healing in gingival recession defects. 相似文献
4.
《Journal of vascular and interventional radiology : JVIR》2022,33(5):518-524.e3
PurposeTo compare the characteristics of polidocanol (POL) and ethanolamine oleate (EO) sclerosing foams produced by a Shirasu porous glass membrane (SPGM) device with those made using a 3-way stopcock (3WSC).Materials and MethodsFoam half-life times were measured in an ex-vivo benchtop study. Computed tomography (CT) images of each foam were obtained over the time course, and a CT texture analysis was conducted. The bubble size in each foam was measured by an optical microscope.ResultsMedian foam half-life times were longer in the SPGM group than in the 3WSC group (POL: 198 vs 166 s, P = .02; EO: 640 vs 391 s, P < .01). In the CT texture analysis, median standard deviation (SD) and entropy (randomness) were lower, and median energy (uniformity) and gray-level cooccurrence matrix (GLCM) homogeneity were higher in the SPGM group than in the 3WSC group (POL SD: at 30 s and 50–300 s; POL entropy: at 0–60 s; EO SD: at 0–600 s; EO entropy: at 0–460 s; POL energy: at 0–40 s; POL GLCM homogeneity: at 0–250 s; EO energy: at 0–360 s; EO GLCM homogeneity: at 0–480 s; all P < .05). Median bubble diameters in the SPGM group and in the 3WSC group were 69 and 83 μm (P < .01), respectively, in the POL foam; and 36 and 36 μm (P = .45), respectively, in the EO foam.ConclusionsPOL and EO foams had greater uniformity and longer foam half-life time when prepared with an SPGM device than with a 3WSC. 相似文献
5.
6.
目的探究老年2型糖尿病(T2DM)并阻塞性睡眠呼吸暂停综合征(OSAS)患者25羟基维生素D[25(OH)D]和血小板参数[平均血小板体积(MPV)和血小板分布宽度(PDW)]变化及与OSAS严重程度的相关性。方法选择2016年10月—2021年10月于宁德师范学院附属宁德市医院诊治的61例老年T2DM合并OSAS患者为观察组,50例单纯T2DM患者为对照组。观察并比较2组基线资料及血25(OH)D、MPV、PDW水平,以及OSAS严重程度不同的患者25(OH)D、MPV和PDW水平,采用Logistic回归模型分析OSAS的影响因素。结果 2组BMI、高血压史、冠心病史、糖化血红蛋白(HbA1c)、高密度脂蛋白胆固醇(HDL-C)和尿酸(UA)差异具有统计学意义(P<0.05);观察组MPV和PDW显著高于对照组(P<0.05),25(OH)D低于对照组(P<0.05);OSAS严重程度不同的患者间25 (OH)D和血小板参数差异具有统计学意义(P<0.05),其中25(OH)D随着OSAS严重程度的增高而降低(P<0.05),MPV、PDW随着OSAS严重程度的增高而上升(P<0.05);Logistic回归分析结果显示,冠心病史、HbA1c、25(OH)D、MPV和PDW是OSAS发生的影响因素(P<0.05)。结论老年T2DM合并OSAS患者MPV和PDW变化呈现上升趋势,25(OH)D呈下降趋势,其水平变化与T2DM合并OSAS发生和病情关系密切。 相似文献
7.
目的:探讨头颈部肿瘤患者在容积旋转调强放疗(volume modulated radiation therapy,VMAT)期间的解剖结构体积改变及剂量学变化。方法:选取8例头颈部鳞癌患者(口咽癌7例,喉癌1例),利用每日锥形束CT(CBCT)分析患者的靶区及腮腺体积随放疗时间的变化规律,并在放疗第10次和第22次再次进行定位CT扫描及计划设计,比较原计划与2次二程放疗计划中靶区、危及器官的剂量学变化。结果:所有患者的靶区及双侧腮腺体积随放疗的进行均呈缩小趋势,且双侧腮腺缩小较为明显。至放疗结束时,GTV和CTV体积退缩比率分别为 15.91%、11.58%;左右腮腺的退缩比率分别为29.72%、26.97%,P均<0.05。在2次二程放疗计划中靶区的D2、D98与脊髓、脑干的D1和原计划相比较差异均无统计学意义(P>0.05),但左右腮腺照射剂量与放疗前相比均有所减少,差异均有统计学意义(P<0.05)。结论:头颈部肿瘤患者在VMAT期间靶区和腮腺体积均会显著缩小,放疗中期有必要设计二程放疗计划。采用离线自适应性放疗技术可提高靶区照射的准确性并在一定程度上降低腮腺的受照剂量。 相似文献
8.
《Nutrition, metabolism, and cardiovascular diseases : NMCD》2022,32(5):1227-1235
Background and aimsAlthough antithrombotic treatments are established for coronary artery disease (CAD), they increase the bleeding risk, especially in malnourished patients. The total thrombus-formation analysis system (T-TAS) is useful for the assessment of thrombogenicity in CAD patients. Here, we examined the relationships among malnutrition, thrombogenicity and 1-year bleeding events in patients undergoing percutaneous coronary intervention (PCI).Methods and resultsThis was a retrospective analysis of 300 consecutive CAD patients undergoing PCI. Blood samples obtained on the day of PCI were used in the T-TAS to compute the thrombus formation area under the curve. We assigned patients to two groups based on the geriatric nutritional risk index (GNRI): 102 patients to the lower GNRI group (≤98), 198 patients to the higher GNRI group (98<). The primary endpoint was the incidence of 1-year bleeding events defined by Bleeding Academic Research Consortium criteria types 2, 3, or 5. The T-TAS levels were lower in the lower GNRI group than in the higher GNRI group. Kaplan-Meier analysis showed worse 1-year bleeding event-free survival in the lower GNRI group compared with the higher GNRI group. The combined model of the GNRI and the Academic Research Consortium for High Bleeding Risk (ARC-HBR) had good calibration and discrimination for bleeding risk prediction. In addition, having a lower GNRI and ARC-HBR positivity was associated with 1-year bleeding events.ConclusionA lower GNRI could reflect low thrombogenicity evaluated by the T-TAS and determine bleeding risk in combination with ARC-HBR positivity. 相似文献
9.
目的评估肝脏瞬时弹性成像、天冬氨酸转氨酶与血小板比值指数(APRI)及基于4因子的肝纤维化指数(FIB-4)对儿童非酒精性脂肪性肝病(NAFLD)肝纤维化的诊断价值。方法选取湖南省儿童医院2015年8月至2020年10月已行肝穿刺病理活检的非酒精性脂肪性肝病100例进行回顾性研究,收集肝脏病理组织和临床资料。采用受试者操作特征曲线(ROC曲线)分析肝脏硬度(LSM)值、APRI及FIB-4诊断儿童NAFLD所致不同肝脏纤维化的诊断价值。结果LSM值、APRI、FIB-4诊断肝纤维化(S≥1)的ROC曲线下面积(AUC)分别为0.701[95%可信区间(CI):0.579~0.822,P=0.011]、0.606(95%CI:0.436~0.775,P=0.182)、0.568(95%CI:0.397~0.740,P=0.387),最佳临界值分别为6.65 kPa、21.20、0.18;LSM值、APRI、FIB-4诊断显著肝纤维化(S≥2)的AUC分别为0.660(95%CI:0.552~0.768,P=0.006)、0.578(95%CI:0.464~0.691,P=0.182)、0.541(95%CI:0.427~0.655,P=0.482),最佳临界值分别为7.35 kPa、24.78、0.22;LSM值、APRI、FIB-4诊断进展期肝纤维化(S≥3)的AUC分别为0.639(95%CI:0.446~0.832,P=0.134)、0.613(95%CI:0.447~0.779,P=0.223)、0.587(95%CI:0.411~0.764,P=0.346),最佳临界值分别为8.55 kPa、26.66、0.27。结论瞬时弹性成像技术对儿童NAFLD肝纤维化有较好的诊断价值,优于APRI和FIB-4。 相似文献
10.