World journal of radiology最新文献

{"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":"15 3","pages":"83-88"},"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}

{"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":"15 3","pages":"56-68"},"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}

{"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 A₁, patients who received multiple dose reduction scans (<i>n</i> = 82); and group A₂, patients who received conventional scans (<i>n</i> = 39). The scan parameters for group A₁ were as follows: Isocentric scan, tube voltage = 80 kV, and tube current control using 80% smart milliampere. The scan parameters for group A₂ were as follows: Normal position, tube voltage = 100 kV, and smart milliampere.</p><p><strong>Results: </strong>The average effective doses (EDs) for groups A₁ and A₂ 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 A₂ when compared to group A₁ (<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":"15 2","pages":"32-41"},"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}

{"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":"15 2","pages":"42-55"},"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}

{"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_trans, K_ep and V_e), 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_trans, K_ep and V_e) 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_peak > 120 s; type B = T_peak ≤ 120 s, washout ratio (WR) ≥ 30%; type C = T_peak ≤ 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_trans, K_ep and V_e 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_trans values of PMAs, WTs, OBTs, and MTs were not significantly different. K_ep values of PMAs and WTs were significantly different from those of OBTs and MTs. Mean V_e 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":"15 1","pages":"20-31"},"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}

{"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":"15 1","pages":"1-9"},"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}

{"title":"Advancements of molecular imaging and radiomics in pancreatic carcinoma.","authors":"Xiao-Xi Pang,&nbsp;Liang Xie,&nbsp;Wen-Jun Yao,&nbsp;Xiu-Xia Liu,&nbsp;Bo Pan,&nbsp;Ni Chen","doi":"10.4329/wjr.v15.i1.10","DOIUrl":"https://doi.org/10.4329/wjr.v15.i1.10","url":null,"abstract":"<p><p>Despite the recent progress of medical technology in the diagnosis and treatment of tumors, pancreatic carcinoma remains one of the most malignant tumors, with extremely poor prognosis partly due to the difficulty in early and accurate imaging evaluation. This paper focuses on the research progress of magnetic resonance imaging, nuclear medicine molecular imaging and radiomics in the diagnosis of pancreatic carcinoma. We also briefly described the achievements of our team in this field, to facilitate future research and explore new technologies to optimize diagnosis of pancreatic carcinoma.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":"15 1","pages":"10-19"},"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/90/01/WJR-15-10.PMC9884334.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9170105","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}

{"title":"Unmasking lower gastrointestinal bleeding under administration of norepinephrine.","authors":"David John Werner,&nbsp;Nicolai Wenzel,&nbsp;Nael Abusalim,&nbsp;Ralf Kiesslich,&nbsp;Till Baar,&nbsp;Achim Tresch,&nbsp;Johannes Wilhelm Rey","doi":"10.4329/wjr.v14.i12.375","DOIUrl":"https://doi.org/10.4329/wjr.v14.i12.375","url":null,"abstract":"<p><strong>Background: </strong>Bleeding in the gastrointestinal tract is common and transarterial embolization enables the clinician to control gastrointestinal bleeding. Contrast extravasation is a prerequisite for successful embolization. Provocative angiography is helpful in the detection of elusive bleeding.</p><p><strong>Aim: </strong>We performed a retrospective analysis of angiographic treatment in patients with lower gastrointestinal hemorrhage and initially negative angiographies, as well as the role of norepinephrine (NE) in unmasking bleeding.</p><p><strong>Methods: </strong>We analyzed 41 patients with lower gastrointestinal bleeding after angiography who had undergone treatment over a period of 10 years. All patients had a positive shock index and needed intensive care.</p><p><strong>Results: </strong>In three of four patients, angiography disclosed the site of bleeding when NE was used during the procedure for hemodynamic stabilization.</p><p><strong>Conclusion: </strong>We suggest that angiography performed after the administration of NE in unstable patients with gastrointestinal bleeding and an initially negative angiography has the potential to unmask bleeding sites for successful embolization. However, this statement must be confirmed in prospective studies.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":"14 12","pages":"375-383"},"PeriodicalIF":2.5,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/12/7f/WJR-14-375.PMC9808013.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10488593","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}

{"title":"Interobserver reliability between pediatric radiologists and residents in ultrasound evaluation of intraventricular hemorrhage in premature infants.","authors":"Muhammad Danish Barakzai,&nbsp;Ayimen Khalid,&nbsp;Zara Za Sheer,&nbsp;Faheemullah Khan,&nbsp;Naila Nadeem,&nbsp;Noman Khan,&nbsp;Kiran Hilal","doi":"10.4329/wjr.v14.i11.367","DOIUrl":"https://doi.org/10.4329/wjr.v14.i11.367","url":null,"abstract":"<p><strong>Background: </strong>Germinal matrix intraventricular hemorrhage (IVH) may contribute to significant morbidity and mortality in premature infants. Timely identification and grading of IVH affect decision-making and clinical outcomes. There is possibility of misinterpretation of the ultrasound appearances, and the interobserver variability has not been investigated between radiology resident and board-certified radiologist.</p><p><strong>Aim: </strong>To assess interobserver reliability between senior radiology residents performing bedside cranial ultrasound during on-call hours and pediatric radiologists.</p><p><strong>Methods: </strong>From June 2018 to June 2020, neonatal cranial ultrasound examinations were performed in neonatal intensive care unit. Ultrasound findings were recorded by the residents performing the ultrasound and the pediatric attending radiologists.</p><p><strong>Results: </strong>In total, 200 neonates were included in the study, with a mean gestational age of 30.9 wk. Interobserver agreement for higher grade (Grade III & IV) IVH was excellent. There was substantial agreement for lower grade (Grade I & II) IVH.</p><p><strong>Conclusion: </strong>There is strong agreement between radiology residents and pediatric radiologists, which is higher for high grade IVHs.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":"14 11","pages":"367-374"},"PeriodicalIF":2.5,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/27/29/WJR-14-367.PMC9723997.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10434387","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}

{"title":"Diagnostic performance of abbreviated gadoxetic acid-enhanced magnetic resonance protocols with contrast-enhanced computed tomography for detection of colorectal liver metastases.","authors":"Kumi Ozaki,&nbsp;Shota Ishida,&nbsp;Shohei Higuchi,&nbsp;Toyohiko Sakai,&nbsp;Ayaki Kitano,&nbsp;Kenji Takata,&nbsp;Kazuyuki Kinoshita,&nbsp;Yuki Matta,&nbsp;Takashi Ohtani,&nbsp;Hirohiko Kimura,&nbsp;Toshifumi Gabata","doi":"10.4329/wjr.v14.i10.352","DOIUrl":"https://doi.org/10.4329/wjr.v14.i10.352","url":null,"abstract":"<p><strong>Background: </strong>Although contrast-enhanced magnetic resonance imaging (MRI) using gadoxetic acid has been shown to have higher accuracy, sensitivity, and specificity for the detection and characterization of hepatic metastases compared with other modalities, the long examination time would limit the broad indication. Several abbreviated enhanced MRI (Ab-MRI) protocols without dynamic phases have been proposed to achieve equivalent diagnostic performance for the detection of colorectal liver metastases. However, an optimal protocol has not been established, and no studies have assessed the diagnostic performance of Ab-MRI combined with contrast-enhanced computed tomography (CE-CT), which is the preoperative imaging of colorectal cancer staging in clinical settings, to determine the best therapeutic strategy.</p><p><strong>Aim: </strong>To compare the diagnostic performance of two kinds of Ab-MRI protocol with the standard MRI protocol and a combination of the Ab-MRI protocol and CE-CT for the detection of colorectal liver metastases.</p><p><strong>Methods: </strong>Study participants comprised 87 patients (51 males, 36 females; mean age, 67.2 ± 10.8 years) who had undergone gadoxetic acid-enhanced MRI and CE-CT during the initial work-up for colorectal cancer from 2010 to 2021. Each exam was independently reviewed by two readers in three reading sessions: (1) Only single-shot fast spin echo (FSE) T2-weighted or fat-suppressed-FSE-T2-weighted, diffusion-weighted, and hepatobiliary-phase images (Ab-MRI protocol 1 or 2); (2) all acquired MRI sequences (standard protocol); and (3) a combination of an Ab-MRI protocol (1 or 2) and CE-CT. Diagnostic performance was then statistically analyzed.</p><p><strong>Results: </strong>A total of 380 Lesions were analyzed, including 195 metastases (51.4%). Results from the two Ab-MRI protocols were similar. The sensitivity, specificity, and positive and negative predictive values from Ab-MRI were non-inferior to those from standard MRI (<i>P</i> > 0.05), while those from the combination of Ab-MRI protocol and CE-CT tended to be higher than those from Ab-MRI alone, although the difference was not significant (<i>P</i> > 0.05), and were quite similar to those from standard MRI (<i>P</i> > 0.05).</p><p><strong>Conclusion: </strong>The diagnostic performances of two Ab-MRI protocols were non-inferior to that of the standard protocol. Combining Ab-MRI with CE-CT provided better diagnostic performance than Ab-MRI alone.</p>","PeriodicalId":23819,"journal":{"name":"World journal of radiology","volume":"14 10","pages":"352-366"},"PeriodicalIF":2.5,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/80/a3/WJR-14-352.PMC9630987.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40670022","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}