World journal of radiology最新文献

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Does sevoflurane sedation in pediatric patients lead to "pseudo" leptomeningeal enhancement in the brain on 3 Tesla magnetic resonance imaging? 儿童患者的七氟醚镇静是否会导致3特斯拉磁共振成像中大脑中的“伪”软脑膜增强?
IF 2.5
World journal of radiology Pub Date : 2023-04-28 DOI: 10.4329/wjr.v15.i4.127
Kiran Hilal, Kumail Khandwala, Saima Rashid, Faheemullah Khan, Shayan Sirat Maheen Anwar
{"title":"Does sevoflurane sedation in pediatric patients lead to \"pseudo\" leptomeningeal enhancement in the brain on 3 Tesla magnetic resonance imaging?","authors":"Kiran Hilal,&nbsp;Kumail Khandwala,&nbsp;Saima Rashid,&nbsp;Faheemullah Khan,&nbsp;Shayan Sirat Maheen Anwar","doi":"10.4329/wjr.v15.i4.127","DOIUrl":"10.4329/wjr.v15.i4.127","url":null,"abstract":"<p><strong>Background: </strong>Prominent leptomeningeal contrast enhancement (LMCE) in the brain is observed in some pediatric patients during sedation for imaging. However, based on clinical history and cerebrospinal fluid analysis, the patients are not acutely ill and do not exhibit meningeal signs. Our study determined whether sevoflurane inhalation in pediatric patients led to this pattern of 'pseudo' LMCE (pLMCE) on 3 Tesla magnetic resonance imaging (MRI).</p><p><strong>Aim: </strong>To highlight the significance of pLMCE in pediatric patients undergoing enhanced brain MRI under sedation to avoid misinterpretation in reports.</p><p><strong>Methods: </strong>A retrospective cross-sectional evaluation of pediatric patients between 0-8 years of age was conducted. The patients underwent enhanced brain MRI under inhaled sevoflurane. The LMCE grade was determined by two radiologists, and interobserver variability of the grade was calculated using Cohen's kappa. The LMCE grade was correlated with duration of sedation, age and weight using the Spearman rho rank correlation.</p><p><strong>Results: </strong>A total of 63 patients were included. Fourteen (22.2%) cases showed mild LMCE, 48 (76.1%) cases showed moderate LMCE, and 1 case (1.6%) showed severe LMCE. We found substantial agreement between the two radiologists in detection of pLMCE on post-contrast T1 imaging (kappa value = 0.61; <i>P</i> < 0.001). Additionally, we found statistically significant inverse and moderate correlations between patient weight and age. There was no correlation between duration of sedation and pLMCE.</p><p><strong>Conclusion: </strong>pLMCE is relatively common on post-contrast spin echo T1-weighted MRI of pediatric patients sedated by sevoflurane due to their fragile and immature vasculature. It should not be misinterpreted for meningeal pathology. Knowing pertinent clinical history of the child is an essential prerequisite to avoid radiological overcalling and the subsequent burden of additional investigations.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/79/97/WJR-15-127.PMC10167815.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9523721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection of tracheal branching with computerized tomography: The relationship between the angles and age-gender. 计算机断层扫描检测气管分支:角度与年龄性别的关系。
IF 2.5
World journal of radiology Pub Date : 2023-04-28 DOI: 10.4329/wjr.v15.i4.118
Şevket Kahraman, Mesut Furkan Yazar, Hüseyin Aydemir, Mecit Kantarci, Sonay Aydin
{"title":"Detection of tracheal branching with computerized tomography: The relationship between the angles and age-gender.","authors":"Şevket Kahraman,&nbsp;Mesut Furkan Yazar,&nbsp;Hüseyin Aydemir,&nbsp;Mecit Kantarci,&nbsp;Sonay Aydin","doi":"10.4329/wjr.v15.i4.118","DOIUrl":"10.4329/wjr.v15.i4.118","url":null,"abstract":"<p><strong>Background: </strong>The data obtained on the anatomical knowledge of the tracheobronchial system can be used for diagnosis, treatment and interventional interventions in areas such as anesthesia, thoracic surgery, pulmonary physiology.</p><p><strong>Aim: </strong>To determine the tracheobronchial branching angles in pediatric and adult populations by using the multislice computed tomography (CT) and minimum intensity projection (MinIP) technique, which is a non-invasive method.</p><p><strong>Methods: </strong>Our study was carried out retrospectively. Patients who underwent contrast and non-contrast CT examination, whose anatomically and pathophysiologically good tracheobronchial system and lung parenchyma images were obtained, were included in the study. Measurements were made in the coronal plane of the lung parenchyma. In the coronal plane, right main bronchus-left main bronchus angle, right upper lobe bronchus-intermedius bronchus angle, right middle lobe bronchus-right lower lobe bronchus angle, left upper lobe bronchus-left lower lobe bronchus angle were measured.</p><p><strong>Results: </strong>The study population consisted of 1511 patients, 753 pediatric (mean age: 13.4 ± 4.3; range: 1-18 years) and 758 adults (mean age: 54.3 ± 17.3; range: 19-94 years). In our study, tracheal bifurcation angle was found to be 73.3° ± 13.7° (59.6°-87°) in the whole population. In the pediatric group, the right-left main coronal level was found to be higher in boys compared to girls (74.6° ± 12.9° <i>vs</i> 71.2° ± 13.9°, <i>P</i> = 0.001). In the adult group, the right-left main coronal level was found to be lower in males compared to females (71.9° ± 12.9° <i>vs</i> 75.8° ± 14.7°, <i>P</i> < 0.001).</p><p><strong>Conclusions: </strong>Our study, with the number of 1511 patients, is the first study in the literature with the largest number of patient populations including pediatric and adult demographic data, measuring the angle values of the tracheobronchial system using multislice CT and MinIP technique. Study data will not only be a guide during invasive procedures, but it can also guide studies to be done with imaging methods.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a1/b3/WJR-15-118.PMC10167816.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9822878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-modality parathyroid imaging: A shifting paradigm. 多模态甲状旁腺成像:一个转变的范式。
IF 2.5
World journal of radiology Pub Date : 2023-03-28 DOI: 10.4329/wjr.v15.i3.69
Shrea Gulati, Sunil Chumber, Gopal Puri, Stanzin Spalkit, N A Damle, C J Das
{"title":"Multi-modality parathyroid imaging: A shifting paradigm.","authors":"Shrea Gulati,&nbsp;Sunil Chumber,&nbsp;Gopal Puri,&nbsp;Stanzin Spalkit,&nbsp;N A Damle,&nbsp;C J Das","doi":"10.4329/wjr.v15.i3.69","DOIUrl":"https://doi.org/10.4329/wjr.v15.i3.69","url":null,"abstract":"<p><p>The goal of parathyroid imaging in hyperparathyroidism is not diagnosis, rather it is the localization of the cause of hyperparathyroidism for planning the best therapeutic approach. Hence, the role of imaging to accurately and precisely localize the abnormal parathyroid tissue is more important than ever to facilitate minimally invasive parathyroidectomy over bilateral neck exploration. The common causes include solitary parathyroid adenoma, multiple parathyroid adenomas, parathyroid hyperplasia and parathyroid carcinoma. It is highly imperative for the radiologist to be cautious of the mimics of parathyroid lesions like thyroid nodules and lymph nodes and be able to differentiate them on imaging. The various imaging modalities available include high resolution ultrasound of the neck, nuclear imaging studies, four-dimensional computed tomography (4D CT) and magnetic resonance imaging. Contrast enhanced ultrasound is a novel technique which has been recently added to the armamentarium to differentiate between parathyroid adenomas and its mimics. Through this review article we wish to review the imaging features of parathyroid lesions on various imaging modalities and present an algorithm to guide their radiological differentiation from mimics.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/78/ba/WJR-15-69.PMC10080580.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9651967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic resonance imaging findings of spontaneous pyomyoma in a premenopausal woman managed with myomectomy: A case report. 经子宫肌瘤切除术的绝经前妇女自发性子宫肌瘤的磁共振成像结果:1例报告。
IF 2.5
World journal of radiology Pub Date : 2023-03-28 DOI: 10.4329/wjr.v15.i3.83
David Martínez, Gustavo E Sanchez, Jhonatan Gómez, Luis J Sonda, Luis D Suárez, Carlos S López, Juan J Vega, Daniel A Cepeda
{"title":"Magnetic resonance imaging findings of spontaneous pyomyoma in a premenopausal woman managed with myomectomy: A case report.","authors":"David Martínez,&nbsp;Gustavo E Sanchez,&nbsp;Jhonatan Gómez,&nbsp;Luis J Sonda,&nbsp;Luis D Suárez,&nbsp;Carlos S López,&nbsp;Juan J Vega,&nbsp;Daniel A Cepeda","doi":"10.4329/wjr.v15.i3.83","DOIUrl":"https://doi.org/10.4329/wjr.v15.i3.83","url":null,"abstract":"<p><strong>Background: </strong>Acute fibroid complications are rare. However, failure to recognize and treat acute complications expeditiously when they occur can lead to catastrophic, even deadly, complications. Pyomyoma is a rare but potentially fatal condition resulting from infarction and infection of a fibroid through bacterial seeding and direct, hematogenous, or lymphatic dissemination. Even though the diagnosis is established through clinical and laboratory findings, imaging is an important complementary method to support the suspected diagnosis.</p><p><strong>Case summary: </strong>Herein, we report a case of a pyomyoma in a nulliparous woman previously diagnosed with uterine leiomyomatosis according to ultrasound findings. The patient had previously attended the emergency room due to hypogastric pain unresponsive to analgesics. After a week of persistent pain, she developed sepsis without any identifiable foci. Magnetic resonance imaging revealed findings compatible with uterine myomatosis with red degeneration, and a possible diagnosis of a pyomyoma was made according to the imaging findings along with the patient's clinical features. We decided to perform myomectomy (which is an infrequently performed surgical treatment due to the procedure's intrinsic implications) due to the patient's desire to preserve fertility. Histopathologic results revealed a uterine leiomyoma with coagulative and liquefactive necrosis, while the tissue culture showed gram-negative cocci bacteria, which were successfully treated using antibiotic therapy. The patient's health status improved after several days.</p><p><strong>Conclusion: </strong>The main diagnostic tools to evaluate pyomyomas are the clinical and laboratory findings as well as tissue cultures. Nonetheless, magnetic resonance imaging can help to corroborate these findings as well as to better characterize myomas with its different complications.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/1c/c2/WJR-15-83.PMC10080582.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9267195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hepatocellular carcinoma: State of the art diagnostic imaging. 肝细胞癌:最新诊断影像。
IF 2.5
World journal of radiology Pub Date : 2023-03-28 DOI: 10.4329/wjr.v15.i3.56
Cody Criss, Arpit M Nagar, Mina S Makary
{"title":"Hepatocellular carcinoma: State of the art diagnostic imaging.","authors":"Cody Criss,&nbsp;Arpit M Nagar,&nbsp;Mina S Makary","doi":"10.4329/wjr.v15.i3.56","DOIUrl":"https://doi.org/10.4329/wjr.v15.i3.56","url":null,"abstract":"<p><p>Primary liver cancer is the fourth most common malignancy worldwide, with hepatocellular carcinoma (HCC) comprising up to 90% of cases. Imaging is a staple for surveillance and diagnostic criteria for HCC in current guidelines. Because early diagnosis can impact treatment approaches, utilizing new imaging methods and protocols to aid in differentiation and tumor grading provides a unique opportunity to drastically impact patient prognosis. Within this review manuscript, we provide an overview of imaging modalities used to screen and evaluate HCC. We also briefly discuss emerging uses of new imaging techniques that offer the potential for improving current paradigms for HCC characterization, management, and treatment monitoring.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f0/29/WJR-15-56.PMC10080581.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9282814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effects of combining multiple dose reduction techniques on coronary computed tomography angiography. 多重减剂量技术对冠状动脉计算机断层造影的影响。
IF 2.5
World journal of radiology Pub Date : 2023-02-28 DOI: 10.4329/wjr.v15.i2.32
Xiao-Lu Hu, Pei-Kai Huang, Meng Zhang, Jun Chen, Meng-Qiang Xiao
{"title":"Effects of combining multiple dose reduction techniques on coronary computed tomography angiography.","authors":"Xiao-Lu Hu,&nbsp;Pei-Kai Huang,&nbsp;Meng Zhang,&nbsp;Jun Chen,&nbsp;Meng-Qiang Xiao","doi":"10.4329/wjr.v15.i2.32","DOIUrl":"https://doi.org/10.4329/wjr.v15.i2.32","url":null,"abstract":"<p><strong>Background: </strong>Coronary computed tomography angiography (CCTA) is the preferred non-invasive examination method for coronary heart disease. However, the radiation from computed tomography has become a concern since public awareness of radiation hazards continue to increase.</p><p><strong>Aim: </strong>To explore the value of multiple dose reduction techniques for CCTA.</p><p><strong>Methods: </strong>Consecutive normal and overweight patients were prospectively divided into two groups: Group A<sub>1</sub>, patients who received multiple dose reduction scans (<i>n</i> = 82); and group A<sub>2</sub>, patients who received conventional scans (<i>n</i> = 39). The scan parameters for group A<sub>1</sub> were as follows: Isocentric scan, tube voltage = 80 kV, and tube current control using 80% smart milliampere. The scan parameters for group A<sub>2</sub> were as follows: Normal position, tube voltage = 100 kV, and smart milliampere.</p><p><strong>Results: </strong>The average effective doses (EDs) for groups A<sub>1</sub> and A<sub>2</sub> were 1.13 ± 0.35 and 3.36 ± 1.30 mSv, respectively. There was a statistically significant difference in ED between the two groups (<i>P</i> < 0.01). Furthermore, noise was significantly lower, and both signal-to-noise ratio and contrast signal-to-noise ratio were higher in group A<sub>2</sub> when compared to group A<sub>1</sub> (<i>P</i> < 0.01). Moreover, the subjective image quality (IQ) scores were excellent in both groups, in which there was no significant difference in subjective IQ score between the two groups (<i>P</i> = 0.12).</p><p><strong>Conclusion: </strong>Multiple dose reduction scan techniques can significantly decrease the ED of patients receiving CCTA examinations for clinical diagnosis.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6b/2a/WJR-15-32.PMC9979190.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9394833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of paraduodenal pancreatitis: A systematic review. 十二指肠旁胰腺炎的影像学:系统回顾。
IF 2.5
World journal of radiology Pub Date : 2023-02-28 DOI: 10.4329/wjr.v15.i2.42
Matteo Bonatti, Nicolò De Pretis, Giulia A Zamboni, Alessandro Brillo, Stefano Francesco Crinò, Riccardo Valletta, Fabio Lombardo, Giancarlo Mansueto, Luca Frulloni
{"title":"Imaging of paraduodenal pancreatitis: A systematic review.","authors":"Matteo Bonatti,&nbsp;Nicolò De Pretis,&nbsp;Giulia A Zamboni,&nbsp;Alessandro Brillo,&nbsp;Stefano Francesco Crinò,&nbsp;Riccardo Valletta,&nbsp;Fabio Lombardo,&nbsp;Giancarlo Mansueto,&nbsp;Luca Frulloni","doi":"10.4329/wjr.v15.i2.42","DOIUrl":"https://doi.org/10.4329/wjr.v15.i2.42","url":null,"abstract":"<p><strong>Background: </strong>Paraduodenal pancreatitis (PP) represents a diagnostic challenge, especially in non-referral centers, given its potential imaging overlap with pancreatic cancer. There are two main histological variants of PP, the cystic and the solid, with slightly different imaging appearances. Moreover, imaging findings in PP may change over time because of disease progression and/or as an effect of its risk factors exposition, namely alcohol intake and smoking.</p><p><strong>Aim: </strong>To describe multimodality imaging findings in patients affected by PP to help clinicians in the differential diagnosis with pancreatic cancer.</p><p><strong>Methods: </strong>The systematic review was conducted according to the Preferred Reporting Items for Systematic reviews and Meta-analyses 2009 guidelines. A Literature search was performed on PubMed, Embase and Cochrane Library using (groove pancreatitis [Title/Abstract]) OR (PP [Title/Abstract]) as key words. A total of 593 articles were considered for inclusion. After eliminating duplicates, and title and abstract screening, 53 full-text articles were assessed for eligibility. Eligibility criteria were: Original studies including 8 or more patients, fully written in English, describing imaging findings in PP, with pathological confirmation or clinical-radiological follow-up as the gold standard. Finally, 14 studies were included in our systematic review.</p><p><strong>Results: </strong>Computed tomography (CT) findings were described in 292 patients, magnetic resonance imaging (MRI) findings in 231 and endoscopic ultrasound (EUS) findings in 115. Duodenal wall thickening was observed in 88.8% of the cases: Detection rate was 96.5% at EUS, 91.0% at MRI and 84.1% at CT. Second duodenal portion increased enhancement was recognizable in 76.3% of the cases: Detection rate was 84.4% at MRI and 72.1% at CT. Cysts within the duodenal wall were detected in 82.6% of the cases: Detection rate was 94.4% at EUS, 81.9% at MRI and 75.7% at CT. A solid mass in the groove region was described in 40.9% of the cases; in 78.3% of the cases, it showed patchy enhancement in the portal venous phase, and in 100% appeared iso/hyperintense during delayed phase imaging. Only 3.6% of the lesions showed restricted diffusion. The prevalence of radiological signs of chronic obstructive pancreatitis, namely main pancreatic duct dilatation, pancreatic calcifications, and pancreatic cysts, was extremely variable in the different articles.</p><p><strong>Conclusion: </strong>PP has peculiar imaging findings. MRI is the best radiological imaging modality for diagnosing PP, but EUS is more accurate than MRI in depicting duodenal wall alterations.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/9b/37/WJR-15-42.PMC9979191.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9394830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnostic efficacy of diffusion-weighted imaging and semiquantitative and quantitative dynamic contrast-enhanced magnetic resonance imaging in salivary gland tumors. 弥散加权成像和半定量、定量动态磁共振增强成像对唾液腺肿瘤的诊断价值。
IF 2.5
World journal of radiology Pub Date : 2023-01-28 DOI: 10.4329/wjr.v15.i1.20
Erkan Gökçe, Murat Beyhan
{"title":"Diagnostic efficacy of diffusion-weighted imaging and semiquantitative and quantitative dynamic contrast-enhanced magnetic resonance imaging in salivary gland tumors.","authors":"Erkan Gökçe,&nbsp;Murat Beyhan","doi":"10.4329/wjr.v15.i1.20","DOIUrl":"https://doi.org/10.4329/wjr.v15.i1.20","url":null,"abstract":"<p><strong>Background: </strong>Increased use of functional magnetic resonance imaging (MRI) methods such as diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) MRI consisting of sequential contrast series, allows us to obtain more information on the microstructure, cellularity, interstitial distance, and vascularity of tumors, which has increased the discrimination power for benign and malignant salivary gland tumors (SGTs). In the last few years, quantitative DCE MRI data containing T1 perfusion parameters (K<sub>trans</sub>, K<sub>ep</sub> and V<sub>e</sub>), were reported to contribute to the differentiation of benign or malignant subtypes in SGTs.</p><p><strong>Aim: </strong>To evaluate the diagnostic efficacy of DWI and semiquantitative and quantitative perfusion MRI parameters in SGTs.</p><p><strong>Methods: </strong>Diffusion MRI [apparent diffusion coefficient (ADC) value] with a 1.5 T MR machine, semiquantitative perfusion MRI [time intensity curve (TIC) pattern], and quantitative perfusion MRI examinations (K<sub>trans</sub>, K<sub>ep</sub> and V<sub>e</sub>) of 73 tumors in 67 patients with histopathological diagnosis performed from 2017 to 2021 were retrospectively evaluated. In the ADC value and semiquantitative perfusion MRI measurements, cystic components of the tumors were not considered, and the region of interest (ROI) was manually placed through the widest axial section of the tumor. TIC patterns were divided into four groups: Type A = T<sub>peak</sub> > 120 s; type B = T<sub>peak</sub> ≤ 120 s, washout ratio (WR) ≥ 30%; type C = T<sub>peak</sub> ≤ 120 s, WR < 30%; and type D = flat TIC. For the quantitative perfusion MRI analysis, a 3D ROI was placed in the largest solid component of the tumor, and the K<sub>trans</sub>, K<sub>ep</sub> and V<sub>e</sub> values were automatically generated.</p><p><strong>Results: </strong>The majority of SGTs were located in the parotid glands (86.3%). Of all the SGTs, 68.5% were benign and 31.5% were malignant. Significant differences were found for ADC values among pleomorphic adenomas (PMAs), Warthin's tumors (WTs), and malignant tumors (MTs) (<i>P</i> < 0.001). PMAs had type A and WTs had type B TIC pattern while the vast majority of MTs and other benign tumors (OBTs) (54.5% and 45.5%, respectively) displayed type C TIC pattern. PMAs showed no washout, while the highest mean WR was observed in WTs (59% ± 11%). K<sub>trans</sub> values of PMAs, WTs, OBTs, and MTs were not significantly different. K<sub>ep</sub> values of PMAs and WTs were significantly different from those of OBTs and MTs. Mean V<sub>e</sub> value of WTs was significantly different from those of PMAs, OBTs, and MTs (<i>P</i> < 0.001).</p><p><strong>Conclusion: </strong>The use of quantitative DCE parameters along with diffusion MRI and semiquantitative contrast-enhanced MRI in SGTs could improve the diagnostic accuracy.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a3/ad/WJR-15-20.PMC9884336.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9170113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical anatomy of hepatic vessels by computed tomography angiography: A minireview. 肝血管计算机断层摄影的临床解剖:综述。
IF 2.5
World journal of radiology Pub Date : 2023-01-28 DOI: 10.4329/wjr.v15.i1.1
Aysegul Firat, Tugce Taskindere Abbasoglu, Musturay Karcaaltincaba, Yasemin H Balaban
{"title":"Clinical anatomy of hepatic vessels by computed tomography angiography: A minireview.","authors":"Aysegul Firat,&nbsp;Tugce Taskindere Abbasoglu,&nbsp;Musturay Karcaaltincaba,&nbsp;Yasemin H Balaban","doi":"10.4329/wjr.v15.i1.1","DOIUrl":"https://doi.org/10.4329/wjr.v15.i1.1","url":null,"abstract":"<p><p>The liver has a complex vascular anatomy with a unique dual blood supply. Clinical conditions of the liver vary widely and include disorders originating in the vascular and biliary systems as well as the parenchyma. In most vascular disorders, the effects on the liver are generally subclinical because of its abundant blood supply. However, early diagnosis of such vascular diseases can significantly reduce patient morbidity and mortality. Because imaging findings of vascular disease are not always readily apparent, diagnosis can be difficult. Computed tomography angiography is an excellent imaging modality for visualizing the vascular anatomy of patients for treatment planning. In this review article, we focus on the vascular anatomy of the liver and the imaging findings in some acute hepatic vascular diseases.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/44/f0/WJR-15-1.PMC9884335.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9170110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancements of molecular imaging and radiomics in pancreatic carcinoma. 胰腺癌分子影像学和放射组学研究进展。
IF 2.5
World journal of radiology Pub Date : 2023-01-28 DOI: 10.4329/wjr.v15.i1.10
Xiao-Xi Pang, Liang Xie, Wen-Jun Yao, Xiu-Xia Liu, Bo Pan, Ni Chen
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