Acta radiologica最新文献_第8页

Predicting poor 90-day prognosis in acute spontaneous intracerebral hemorrhage patients using initial MRI signs of cerebral small vessel disease (CSVD): a retrospective cohort study. 利用脑小血管疾病（CSVD）的初始MRI征象预测急性自发性脑出血患者90天不良预后：一项回顾性队列研究

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-28 DOI: 10.1177/02841851251329523

Zhenjie Yang, Xinghua Liu, Rui He, Chuyue Wu, Yu Huang, Lei He, Wenbing Zeng

{"title":"Predicting poor 90-day prognosis in acute spontaneous intracerebral hemorrhage patients using initial MRI signs of cerebral small vessel disease (CSVD): a retrospective cohort study.","authors":"Zhenjie Yang, Xinghua Liu, Rui He, Chuyue Wu, Yu Huang, Lei He, Wenbing Zeng","doi":"10.1177/02841851251329523","DOIUrl":"https://doi.org/10.1177/02841851251329523","url":null,"abstract":"BackgroundVarious factors impact the prognosis of the patients with intracerebral hemorrhage (ICH).PurposeTo evaluate the initial magnetic resonance imaging (MRI) indicators of cerebral small vessel disease (CSVD) and evaluate the relationship between the MRI indicators and ICH prognosis.Material and MethodsClinical and imaging data were collected from individuals diagnosed with acute ICH who had undergone MRI within 48 h of symptom onset between October 2021 and March 2022. The 90-day modified Rankin Scale (mRS) scores were analyzed, focusing on identifying those patients with a mRS score ≥3 points, which was consistent with a poor prognosis.ResultsA total of 220 ICH patients were evaluated, with 81 (36.8%) having a poor prognosis at 90 days. The study identified encephalatrophy (P = 0.014, odds ratio [OR] = 2.431, 95% confidence interval [CI] = 1.242-3.768), grade 2 periventricular Fazekas scale (P = 0.021, OR = 2.389, 95% CI = 1.174-2.869), centrum semiovale perivascular space (P = 0.035, OR = 2.296, 95% CI = 1.110-3.798), age (P = 0.002, OR = 1.046, 95% CI = 1.017-1.077), female sex (P = 0.015, OR = 0.463, 95% CI = 0.250-0.859), and admission National Institutes of Health Stroke Scale score (P = 0.003, OR = 1.052, 95% CI = 1.022-1.084) as independent risk factors for poor prognosis of an ICH. The incorporation of MRI findings significantly enhanced the predictive accuracy of the poor prognosis model in comparison to a model lacking MRI findings (AUC = 0.833 vs. 0.815, net reclassification index = 0.186; P = 0.021, integrated discrimination improvement = 0.158; P = 0.016).ConclusionIdentification of initial MRI findings of CSVD, such as white matter hyperintensity, perivascular spaces, cerebral microbleeds, lacunar infarcts, brain atrophy, and leukodystrophy, has the potential to enhance prognostication of patients with ICHs.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251329523"},"PeriodicalIF":1.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative evaluation of axillary lymph nodes in breast cancer on dual-phase dual-energy CT by precise match with pathology. 双期双能CT与病理精确匹配定量评价乳腺癌腋窝淋巴结。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-28 DOI: 10.1177/02841851251326469

Tingting Qiao, Su Wang, Zhengyin Shen, Lei Zhang, Guoxuan Wang, Bin Hua, Lei Jiang

{"title":"Quantitative evaluation of axillary lymph nodes in breast cancer on dual-phase dual-energy CT by precise match with pathology.","authors":"Tingting Qiao, Su Wang, Zhengyin Shen, Lei Zhang, Guoxuan Wang, Bin Hua, Lei Jiang","doi":"10.1177/02841851251326469","DOIUrl":"https://doi.org/10.1177/02841851251326469","url":null,"abstract":"BackgroundIdentification of axillary lymph node (aLN) metastasis in breast cancer (BC) is important. Dual-energy computed tomography (DECT) is a promising innovation in the field of CT. However, its role in evaluating aLNs remains unclear.PurposeTo investigate the diagnostic performance of DECT in evaluating aLN metastasis in BC patients.Material and MethodsData were prospectively collected from treatment-naïve BC patients who underwent DECT for staging, ultrasound-guided biopsy for suspicious aLNs, and placement of tissue marker in the pathology-positive aLNs. Further cross-sectional imaging was performed preoperatively to locate the marker-labeled LN and help to identify the pathologically proven LN on DECT. Maximal short diameter (MSD) and 13 DECT parameters were measured on metastatic aLNs and contralateral normal aLNs. The univariate, least absolute shrinkage and selection operator and multivariable logistic regression were performed to find independent parameters for predicting metastasis. The diagnostic performance was assessed using receiver operating characteristics (ROC) analysis.ResultsA total of 76 axillary LNs (38 metastasized, 38 normal) from 38 patients were finally included. All DECT parameters showed significant difference between metastatic and normal LNs (all P < 0.001). Arterial enhancement fraction (AEF) and MSD were independent predictors of metastasis (P = 0.010 and 0.014, respectively). The area under the ROC curve (AUC) of AEF was the highest (0.967). The combined AUC of AEF and MSD was significantly higher than that of MSD alone (0.994 vs. 0.943; P = 0.025).ConclusionDECT is a promising tool for preoperative evaluation of aLNs in BC patients, with MSD and AEF having the best diagnostic performance.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251326469"},"PeriodicalIF":1.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cumulative radiation dose in children with congenital heart disease: national data 2000-2021, stratified by diagnosis, age, and imaging modality. 先天性心脏病儿童的累积辐射剂量：2000-2021年国家数据，按诊断、年龄和成像方式分层

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-26 DOI: 10.1177/02841851251327896

Susmita Afroz, Bjørn H Østerås, Utheya S Thevathas, Lise Heiberg, Trude E Robsahm, Hilde M Olerud, Gaute Dohlen

{"title":"Cumulative radiation dose in children with congenital heart disease: national data 2000-2021, stratified by diagnosis, age, and imaging modality.","authors":"Susmita Afroz, Bjørn H Østerås, Utheya S Thevathas, Lise Heiberg, Trude E Robsahm, Hilde M Olerud, Gaute Dohlen","doi":"10.1177/02841851251327896","DOIUrl":"https://doi.org/10.1177/02841851251327896","url":null,"abstract":"BackgroundPediatric congenital heart disease (CHD) patients often undergo procedures involving ionizing radiation for diagnosis, treatment, and follow-up. Their cumulative radiation burden may increase their risk of late effects.PurposeTo assess radiation exposures from cardiac catheterization and thoracic imaging in pediatric CHD patients, stratified by diagnosis, age, and imaging modality.Material and MethodsRadiation exposure (cardiac catheterization, thoracic computed tomography [CT] and radiography) was retrospectively collected for individuals aged <18 years (born 2000-2020) with at least one catheterization for CHD. Cumulative effective dose (CED) was estimated per patient by diagnosis. Age-based variation in examination frequency and exposure was examined.ResultsA total of 1574 patients underwent 23,558 radiographic examinations. The most common diagnoses, atrial septal defect (ASD; 31% of the cohort) and patent ductus arteriosus (PDA; 30%), had a median CED of 2.3 and 2.9 mSv, respectively. The diagnoses resulting in highest CEDs were hypoplastic left heart syndrome (HLHS; 2.6%, 37.5 mSv), double inlet left ventricle (DILV; 2.4%, 48.4 mSv), and double outlet right ventricle (DORV; 2.6%, 31.3 mSv). Cardiac catheterization, thoracic CT, and radiography contributed 94%, 4%, and 2% of CED, respectively. Effective doses per patient for each diagnosis varied with age. Doses from cardiac catheterizations tended to be higher for patients exposed at ≤30 versus 31-90 months old.ConclusionMost patients with ASD and PDA had low CED and patients with HLHS, DILV, and DORV received ≥30 mSv. Patients with severe CHD often required early catheterization, which, in turn, led to higher effective doses in these patients due to larger conversion coefficients between dose area product/dose length product and effective dose in individuals aged ≤30 months.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251327896"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diagnostic value of color Doppler ultrasound combined with blood inflammatory markers in threatened abortion and pregnancy outcomes in early pregnancy. 彩色多普勒超声联合血液炎症标志物对先兆流产及妊娠结局的诊断价值。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-25 DOI: 10.1177/02841851251324923

Siyuan Yang, Mingyan Wang, Linxin Yang, Ning Lin

{"title":"Diagnostic value of color Doppler ultrasound combined with blood inflammatory markers in threatened abortion and pregnancy outcomes in early pregnancy.","authors":"Siyuan Yang, Mingyan Wang, Linxin Yang, Ning Lin","doi":"10.1177/02841851251324923","DOIUrl":"https://doi.org/10.1177/02841851251324923","url":null,"abstract":"BackgroundThreatened abortion is a general complication during pregnancy.PurposeTo analyze the predictive effect of color Doppler ultrasound (CDUS) combined with blood inflammatory markers in threatened abortion and pregnancy outcomes in early pregnancy.Material and MethodsUterine artery blood flow parameters, blood inflammatory marker levels, influencing factors of threatened abortion and pregnancy outcomes, and predictive value of CDUS combined with blood inflammation markers for threatened abortion and pregnancy outcomes were analyzed.ResultsThe abortion group exhibited higher resistance index (RI), pulsation index (PI), and systolic peak flow velocity/end-diastolic flow velocity (S/D), and serum IL-1β, neutrophil-to-lymphocyte ratio (NLR), and monocyte-to-lymphocyte ratio (MLR) than the continued pregnancy and control groups, and a higher proportion of subchorionic hematomas than the continued pregnancy group; IL-1β, NLR, PI, and SD were risk factors for threatened abortion. The area under the curve (AUC) of IL-1β, NLR, MLR, RI, PI, and S/D for combined prediction of threatened abortion was higher than that for individual predictors. Previous abortion history, IL-1β, NLR, PI, and S/D were risk factors for adverse pregnancy outcomes in threatened abortion. The AUC of IL-1β, NLR, RI, PI, and S/D for combined prediction of pregnancy outcomes in threatened abortion was higher than for individual predictors.ConclusionCDUS of uterine artery blood flow parameters combined with blood inflammatory markers has high predictive value for threatened abortion and pregnancy outcomes.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251324923"},"PeriodicalIF":1.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning algorithms can recognize hydronephrosis in non-contrast CT images. 机器学习算法可以在非对比CT图像中识别肾积水。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-24 DOI: 10.1177/02841851251327892

Bökebatur Ahmet Raşit Mendi, Halitcan Batur

{"title":"Machine learning algorithms can recognize hydronephrosis in non-contrast CT images.","authors":"Bökebatur Ahmet Raşit Mendi, Halitcan Batur","doi":"10.1177/02841851251327892","DOIUrl":"https://doi.org/10.1177/02841851251327892","url":null,"abstract":"BackgroundHydronephrosis, particularly attributed to the presence of renal calculi, is a clinical condition that can result in permanent renal injury, necessitating the utilization of imaging modalities for accurate diagnosis. Methodologies that can swiftly aid the radiologist by reducing workload are required for the preliminary diagnosis of hydronephrosis, which is critical in clinical practice.PurposeTo examine the efficacy of autosegmentation-assisted radiomics in predicting the presence of hydronephrosis among individuals diagnosed with renal colic.Material and MethodsThe study comprised 268 individuals who had non-contrast computed tomography (CT) scans presenting unilateral hydronephrosis. After the 3D autosegmentation of each patient's kidneys, first- and second-order radiomics parameters were acquired and Least Absolute Shrinkage and Selection Operator was employed as the dimensionality reduction tool. Machine learning (ML) procedures consisted of Support Vector Machine (SVM), Random Forest Classifier (RFC) analysis, Extreme Gradient Boosting (XGBoost), and Decision Tree Analysis.ResultsNo statistically significant difference was observed between the groups when comparing the side of hydronephrosis and the distribution of age among sexes. The repeated measurements of 3D autosegmentation exhibited a high level of intra-observer agreement. SVM, RFC, XGBoost, and Decision Tree analyses were able to predict the presence of hydronephrosis with AUC values of 0.966, 0.925, 0.994, and 0.978, respectively.ConclusionML-assisted radiomics can be considered an effective tool for accurately predicting the presence of hydronephrosis.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251327892"},"PeriodicalIF":1.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Slight hyperintensity of the left piriform cortex and amygdala on T2-weighted FLAIR images in older adults and patients with probable Alzheimer's disease. 老年人和可能患有阿尔茨海默病的患者的t2加权FLAIR图像上左侧梨状皮质和杏仁核的轻微高强度。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-24 DOI: 10.1177/02841851251328261

Hiroshi Ishizaka, Akiko Sekine, Minoru Naka, Saeki Nakano, Hiroyuki Nagase, Yoshito Tsushima

{"title":"Slight hyperintensity of the left piriform cortex and amygdala on T2-weighted FLAIR images in older adults and patients with probable Alzheimer's disease.","authors":"Hiroshi Ishizaka, Akiko Sekine, Minoru Naka, Saeki Nakano, Hiroyuki Nagase, Yoshito Tsushima","doi":"10.1177/02841851251328261","DOIUrl":"https://doi.org/10.1177/02841851251328261","url":null,"abstract":"BackgroundThe left piriform cortex and amygdala (PC&A) is an early target for deterioration due to aging and Alzheimer's disease (AD) in several neuropathological and magnetic resonance (MR) volumetric studies. We observed slight hyperintensity of the left PC&A in older adults and probable AD (pAD) patients on T2-weighted fluid-attenuated inversion recovery (T2W-FLAIR) images.PurposeTo quantitatively assess the validity of the left PC&A hyperintensity in older adults and pAD patients.Material and MethodsT2W-FLAIR images from three groups were retrospectively evaluated: (i) younger control (YC; n = 77): individuals aged 37.9 ± 8.4 years; (ii) older control (OC; n = 98): individuals aged 76.9 ± 5.3 years without cognitive impairment; and (iii) pAD (n = 35): individuals aged 80.5 ± 6.9 years with pAD. Signal intensity (SI) ratios of the left to right PC&A (L-PC&A/R-PC&A) were calculated for all groups. In the OC and pAD groups, SI ratios of the left PC&A to pons (L-PC&A/P) and the right PC&A to pons (R-PC&A/P) were calculated. The regions of interest were defined as large as possible on transaxial images in which the PC&As were most broadly depicted.ResultsThe mean L-PC&A/R-PC&A in the YC, OC, and pAD groups showed an increasing trend in that sequence (P < 0.001). The mean L-PC&A/P was higher in the pAD group than in the OC group (P < 0.001). However, the mean R-PC&A/P was not significantly different between the OC and pAD groups (P = 0.245).ConclusionThe SI of the left PC&A on T2W-FLAIR images significantly increased with age and in individuals with pAD, likely reflecting the deterioration of the left PC&A.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251328261"},"PeriodicalIF":1.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficacy of reduced-dose gadobutrol versus standard-dose gadoterate in contrast-enhanced MRI for the evaluation of diabetic foot osteomyelitis. 减少剂量加多比特与标准剂量加多比特在对比增强MRI中评估糖尿病足骨髓炎的疗效。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-24 DOI: 10.1177/02841851251330281

Tae Ran Ahn, Yu Mi Jeong, Ji Young Jeon

{"title":"Efficacy of reduced-dose gadobutrol versus standard-dose gadoterate in contrast-enhanced MRI for the evaluation of diabetic foot osteomyelitis.","authors":"Tae Ran Ahn, Yu Mi Jeong, Ji Young Jeon","doi":"10.1177/02841851251330281","DOIUrl":"https://doi.org/10.1177/02841851251330281","url":null,"abstract":"BackgroundGadobutrol is a macrocyclic gadolinium-based contrast agent (GBCA) with higher relaxivity than other GBCAs, suggesting the potential for dose reduction without compromising image quality.PurposeTo evaluate whether a 30% reduced dose of gadobutrol is as effective as the standard dose of gadoterate for lesion visualization and enhancement in diabetic foot osteomyelitis.MethodsThis study included 132 patients with preoperative contrast-enhanced foot MRIs prior to amputation surgery for diabetic foot osteomyelitis from November 2020 to January 2023. Sixty-six enhanced foot MRIs with reduced dose gadobutrol (0.07 mmol/kg) and 66 MRIs with standard dose gadoterate (0.1 mmol/kg) were reviewed by two radiologists. For the primary study objective, two parameters (lesion border visualization and subjective lesion enhancement) for qualitative lesion visualization were assessed between the two agents using a noninferiority analysis. In the quantitative assessment of lesion enhancement, lesion-to-background ratio and enhancement percentage were compared between the two agents.ResultsThe mean scores for lesion border delineation and the visual degree of contrast enhancement were nearly identical between the two groups. For both readers, the lower limit of the 95% confidence interval (CI) for the difference did not drop below -0.35, which is above the noninferiority margin. Regarding quantitative analysis, no significant differences were observed in the enhancement percentage and lesion-to-background ratio between the two agents (p > 0.5).ConclusionA 30% reduced dose of gadobutrol (0.07 mmol/kg) is as effective as the standard gadoterate dose (0.1 mmol/kg) for lesion visualization in contrast-enhanced MRI of diabetic foot osteomyelitis, with similar enhancement efficacy.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251330281"},"PeriodicalIF":1.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiological changes in anterior arm muscles after biceps long head tenotomy. 二头长头肌腱切断术后前臂肌肉的影像学改变。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-21 DOI: 10.1177/02841851251323963

İlhan Çelik, Tacettin Ayanoğlu, Emine Dağıstan, Faruk Özdemir, Seyit Ali Kayış, Ulunay Kanatlı

{"title":"Radiological changes in anterior arm muscles after biceps long head tenotomy.","authors":"İlhan Çelik, Tacettin Ayanoğlu, Emine Dağıstan, Faruk Özdemir, Seyit Ali Kayış, Ulunay Kanatlı","doi":"10.1177/02841851251323963","DOIUrl":"https://doi.org/10.1177/02841851251323963","url":null,"abstract":"BackgroundAlthough a decrease in pain may be observed after tenotomy, conditions such as muscle cramp, limited elbow flexion, cosmetic deformity (Popeye sign), decreased elbow flexion-supination strength, and persistent pain are also seen, and the exact cause is not fully known.PurposeTo evaluate the changes in the short head of the biceps brachii (SHB) tendon thickness and coracobrachialis muscle after tenotomy.Material and MethodsIn this original article, magnetic resonance imaging (MRI) was performed preoperatively and 6 months postoperatively on 77 patients who underwent biceps brachii long head tenotomy during shoulder arthroscopy and who met the inclusion criteria. Changes in the thickness of the SHB and the coracobrachialis muscle were evaluated. The location where the long head of the biceps brachii (LHB) terminated after tenotomy was also investigated.ResultsIn the 6th postoperative month, we observed a significant increase in both the thickness of the SHB footprint and 2 cm distal to the tendon's origin. In addition, the LHB, which underwent tenotomy, was distracted on average 24.2 mm distally. However, no changes were observed in the thickness of the coracobrachialis muscle during the same period.ConclusionIn this study, we demonstrated prospectively increased thickness of the SHB tendon and no increase in thickness in the coracobrachialis muscle on postoperative MRI.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251323963"},"PeriodicalIF":1.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143673191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mean creatinine decrease after administration of intravenous contrast in patients with renal dysfunction: implications for assessment of post-contrast nephrotoxicity. 肾功能不全患者静脉注射造影剂后平均肌酐降低：对造影剂后肾毒性评估的意义。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-20 DOI: 10.1177/02841851251327895

Jeffrey H Newhouse, Firas Ahmed, James Ellis

{"title":"Mean creatinine decrease after administration of intravenous contrast in patients with renal dysfunction: implications for assessment of post-contrast nephrotoxicity.","authors":"Jeffrey H Newhouse, Firas Ahmed, James Ellis","doi":"10.1177/02841851251327895","DOIUrl":"https://doi.org/10.1177/02841851251327895","url":null,"abstract":"BackgroundContrast nephropathy risk is traditionally assessed by the proportion of patients whose post-contrast serum creatinine (SCr) increases exceed certain thresholds. However, this method can be misleading because of random threshold selections, overlooking post-contrast creatinine decreases, and discarding continuous renal function data. The main impact of contrast on renal function can be revealed by analyzing the mean changes in SCr and evaluating their significance.PurposeTo analyze published data permitting calculation of mean SCr changes after intravenous contrast.Material and MethodsWe identified publications including patients with pre-existing renal dysfunction who received modern contrast agents, specified contrast type and dose, and means and standard deviations of SCr measurements before and after contrast.ResultsIn 14 articles, including 2057 patients, mean SCr pre-contrast was 148.6 µmol/L (1.68 mg/dL); decreasing significantly to 144.1 µmol/L (1.63 mg/dL) after contrast. Significant diminutions occurred at post-contrast intervals of 4, 7, and 10 days, and in patients who received hydration therapy. Of the patients, 6.6% met the specific thresholds for contrast nephropathy as defined by individual studies.ConclusionThe slight significant improvement in SCr after iodinated contrast suggests that some prior estimates of the risk of contrast-induced acute kidney injury (AKI) have been erroneously high and corroborates the current view that the risk of clinically important AKI after contrast is unlikely in patients with moderate renal failure. Threshold-based investigations of nephropathy may be misleading. Mean post-contrast SCr decline should be considered for clinical decisions regarding contrast administration. Future studies on the renal effects of contrast should analyze means, variation, and significance of post-contrast SCr changes.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251327895"},"PeriodicalIF":1.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation between AI algorithm generated radiographic hip measurements for hip dysplasia patients and internal derangement findings on advanced MRI. 人工智能算法生成的髋关节x线测量髋关节发育不良患者与高级MRI内部紊乱的相关性。

IF 1.1 4区医学

Acta radiologica Pub Date : 2025-03-19 DOI: 10.1177/02841851251324551

Shuda Xia, Holden Archer, Yin Xi, Joel Wells, Avneesh Chhabra

{"title":"Correlation between AI algorithm generated radiographic hip measurements for hip dysplasia patients and internal derangement findings on advanced MRI.","authors":"Shuda Xia, Holden Archer, Yin Xi, Joel Wells, Avneesh Chhabra","doi":"10.1177/02841851251324551","DOIUrl":"https://doi.org/10.1177/02841851251324551","url":null,"abstract":"BackgroundHip dysplasia (HD) involves abnormal acetabular development, resulting in reduced femoral head coverage, labral tears, and cartilage injury. Machine learning (AI) advancements have enabled reproducible radiographic measurements for HD, such as lateral center edge angle (LCEA), Tonnis, and extrusion index. Moreover, incorporating 3D magnetic resonance imaging (MRI) alongside 2D MRI enhances diagnostic capabilities.PurposeTo correlate advanced MRI-assessed labral and cartilage injuries with validated AI-generated radiographic measurements.Material and MethodsThis study enrolled 139 patients (age range = 16-68 years) with HD, comprising a total of 156 hips. All patients had 2D and 3D MRI scans, four-view X-rays, and AI-generated radiographic measurements using a commercial AI program that utilized bony landmarks to generate measurements. Labral reconstructions were obtained for each hip, and a multi-reader study was conducted. Inter-reader (ICC) analysis and Spearman correlations were calculated.ResultsThe predominant location for the largest labral tear was anterosuperior (133/156, 90%), and paralabral cysts were observed in 53/156 (34%) cases. No statistically significant correlations were found between the length of labral tears and radiographic measurements. However, statistically significant correlations were observed between paralabral cysts and femoral head coverage, extrusion index, LCEA, and Tonnis measurements.ConclusionAI-generated radiographic measurements in HD exhibited weak correlations with advanced MRI findings, likely due to the condition's complex pathophysiology.","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":" ","pages":"2841851251324551"},"PeriodicalIF":1.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0