Polish Journal of Radiology最新文献

{"title":"Intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) of the major salivary glands: an assessment of the optimal number and combination of <i>b</i>-values.","authors":"Mitsuhiro Kimura,&nbsp;Hidetake Yabuuchi,&nbsp;Hiroshi Narita,&nbsp;Yoichi Kurihara,&nbsp;Kiyoshi Hisada,&nbsp;Noriyuki Sakai,&nbsp;Kazuya Nagatomo,&nbsp;Ryoji Mikayama,&nbsp;Masafumi Masaki,&nbsp;Hiroshi Kimura","doi":"10.5114/pjr.2022.116167","DOIUrl":"https://doi.org/10.5114/pjr.2022.116167","url":null,"abstract":"<p><strong>Purpose: </strong>To examine the optimal number and combination of <i>b</i>-values in intravoxel incoherent motion (IVIM) diffusionweighted imaging (DWI) of the major salivary glands.</p><p><strong>Material and methods: </strong>IVIM-DWI was performed on 10 healthy volunteers using 13 <i>b</i>-values (low <i>b</i>-values: 0-100 s/mm²; high <i>b</i>-values: 200-1000 s/mm²). The IVIM parameters and apparent diffusion coefficient of the bilateral major salivary glands were calculated using 13 <i>b</i>-values and were considered the standard values. We sequentially reduced the number of <i>b</i>-values to 10, 8, 6, and 5. The parameters in each combination were calculated. The standard values were compared with the parameters from each reduced <i>b</i>-value in IVIM-DWI. The Wilcoxon signed-rank test was used to determine whether there were any differences between the parameters in each combination. Bonferroni correction was conducted for multiple comparisons.</p><p><strong>Results: </strong>There were no significant differences between the standard values and parameters from the 2 combinations of 6 <i>b</i>-values. However, significant differences were observed between the standard values and parameters from some combinations of only 2 low or only 2 high <i>b</i>-values.</p><p><strong>Conclusions: </strong>IVIM-DWI of the major salivary glands could be performed using a minimum of 6 <i>b</i>-values. However, they should contain 3 low and 3 high <i>b</i>-values.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e246-e256"},"PeriodicalIF":1.2,"publicationDate":"2022-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/49/6c/PJR-87-47010.PMC9215303.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40467705","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":"Personalized management of prostate cancer: from molecular and imaging markers to radiogenomics.","authors":"Yulian Mytsyk,&nbsp;Andriy Borzhiyevs'kyy,&nbsp;Yuriy Kobilnyk,&nbsp;A V Shulyak,&nbsp;Ihor Dutka,&nbsp;Oleksandr Borzhiyevs'kyy,&nbsp;Andrzej Górecki","doi":"10.5114/pjr.2022.113204","DOIUrl":"https://doi.org/10.5114/pjr.2022.113204","url":null,"abstract":"<p><strong>Purpose: </strong>Prostate cancer (PCa) is the second most common cancer in men. The urge to guide treatment tactics based on personal clinical risk factors has evolved in the era of human genome sequencing. To date, personalized approaches to managing PCa patients have not yet been developed. Radiogenomics is a relatively new term, used to refer to the study of genetic variation associated with imaging features of the tumour in order to improve the prognostication of the disease course.</p><p><strong>Material and methods: </strong>The study is a review of recent knowledge regarding potential clinical applications of radiogenomics in personalized treatment of PCa.</p><p><strong>Results: </strong>Recent investigations have proven that by combining data on individual genetic tumour features, and radiomic profiling (radiologic-molecular correlation), with traditional staging procedures in order to personalize treatment of PCa, an improved prognostication of PCa course can be performed, and overtreatment of indolent cancer can be avoided. It was found that a combination of multiparametric MRI and gene expression data allowed the detection of radiomic features of PCa, which correlated with a number of gene signatures associated with adverse outcomes. It was revealed that several molecular markers may drive tumour upstaging, allowed the distinction between the PCa stages, and correlated with aggressiveness-related radiomic features.</p><p><strong>Conclusions: </strong>The radiogenomics of PCa is not a comprehensively investigated area of oncourology. The combination of genomics and radiomics as integrative parts of precision medicine in the future has the potential to become the foundation for a personalized approach to the management of PCa.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e58-e62"},"PeriodicalIF":1.2,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/bd/ae/PJR-87-46335.PMC8814894.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39904345","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":"The value of different diffusion-weighted magnetic resonance techniques in the diagnosis of middle ear cholesteatoma. Is there still an indication for echo-planar diffusion-weighted imaging?","authors":"Alina Piekarek,&nbsp;Tomasz Zatoński,&nbsp;Mateusz Kolator,&nbsp;Joanna Bladowska,&nbsp;Marek Sąsiadek,&nbsp;Anna Zimny","doi":"10.5114/pjr.2022.113194","DOIUrl":"https://doi.org/10.5114/pjr.2022.113194","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the study was to analyse the value of 2 different diffusion-weighted imaging (DWI) techniques (echo-planar imaging [EPI] and on-echo-planar imaging [non-EPI]) in the diagnosis of cholesteatoma.</p><p><strong>Material and methods: </strong>Our material consisted of 32 subjects suspected of cholesteatoma, who underwent magnetic resonance imaging of the temporal bone using both EPI and non-EPI DWI. Two independent readers retrospectively analysed magnetic resonance images. Intra- and interobserver agreements as well sensitivity, specificity, and negative (NPV) and positive (PPV) predictive values of both DWI sequences were assessed.</p><p><strong>Results: </strong>Using non-EPI DWI all cholesteatomas were correctly diagnosed by both readers with no false negative nor inconclusive cases and with only one false positive result. Non-EPI DWI revealed high interobserver agreement (k = 1) and high correlation with histopathological results (<i>r</i> = 0.895). EPI DWI misdiagnosed 27-31% of cholesteatomas (false negative results), showing also significantly low interobserver agreement (k = 0.373) and low correlation with histopathological results (<i>r</i> = 0.328 for reader 1 and <i>r</i> = 0.267 for reader 2). Non-EPI DWI revealed very high sensitivity (100%), specificity (83.3%), NPV (100%), and PPV (96.3%) in comparison to EPI DWI, which showed lower sensitivity (69.2%), specificity (66.6-83.3%), NPV (33.3-38.4%), and PPV (90.0-94.7%).</p><p><strong>Conclusions: </strong>Non-EPI DWI with high sensitivity, specificity, and interobserver agreement is a very reliable technique in detecting middle ear cholesteatoma regardless of the pre- or postoperative state of the ear, and it should entirely replace EPI DWI in clinical practice.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e51-e57"},"PeriodicalIF":1.2,"publicationDate":"2022-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/09/d8/PJR-87-46333.PMC8814897.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39904343","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":"The value of the apparent diffusion coefficient value in the Liver Imaging Reporting and Data System (LI-RADS) version 2018.","authors":"Gehad Ahmad Saleh,&nbsp;Ahmed Abdel Khalek Abdel Razek,&nbsp;Lamiaa Galal El-Serougy,&nbsp;Walaa Shabana,&nbsp;Rihame Abd El-Wahab","doi":"10.5114/pjr.2022.113193","DOIUrl":"https://doi.org/10.5114/pjr.2022.113193","url":null,"abstract":"<p><strong>Purpose: </strong>To assess role of the apparent diffusion coefficient (ADC) in the Liver Imaging Reporting and Data System (LI-RADS) version 2018 for the prediction of hepatocellular carcinoma (HCC).</p><p><strong>Material and methods: </strong>Retrospective analysis of 137 hepatic focal lesions in 108 patients at risk of HCC, who underwent magnetic resonance imaging of the liver. Hepatic focal lesions were classified according to LI-RADS-v2018, and ADC of hepatic lesions was calculated by 2 independent blinded reviewers.</p><p><strong>Results: </strong>The mean ADC of LR-1 and LR-2 were 2.11 ± 0.47 and 2.08 ± 0.47 × 10^-3 mm²/s, LR-3 were 1.28 ± 0.12 and 1.36 ± 0.16 × 10^-3 mm²/s, LR-4, LR-5 and LR-TIV were 1.07 ± 0.08 and 1.08 ± 0.12 × 10^-3 mm²/s and LR-M were 1.02 ± 0.09 and 1.00 ± 0.09 × 10^-3 mm²/s by both observers, respectively. There was excellent agreement of both readings for LR-1 and LR-2 (<i>r</i> = 0.988), LR-3 (<i>r</i> = 0.965), LR-4, LR-5 and LR-TIV (<i>r</i> = 0.889) and LR-M (<i>r</i> = 0.883). There was excellent correlation between ADC and LI-RADS-v2018 (<i>r</i> = -0.849 and -0.846). The cut-off ADC used to differentiate LR-3 from LR-4, LR-5, and LR-TIV were ≤ 1.21 and ≤ 1.23 × 10^-3 mm²/s with AUC of 0.948 and 0.926.</p><p><strong>Conclusions: </strong>Inclusion of ADC to LI-RADS-v2018 improves differentiation variable LI-RADS categories and can helps in the prediction of HCC.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e43-e50"},"PeriodicalIF":1.2,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ca/8b/PJR-87-46332.PMC8814898.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39904344","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":"Benefitial role of electrochemotherapy in locally advanced pancreatic cancer - radiological perspective.","authors":"Oliwia Kozak,&nbsp;Stanisław Hać,&nbsp;Joanna Pieńkowska,&nbsp;Michał Studniarek","doi":"10.5114/pjr.2022.112674","DOIUrl":"https://doi.org/10.5114/pjr.2022.112674","url":null,"abstract":"<p><p>Irreversible electroporation (IRE) of locally advanced pancreatic cancer is an increasingly used method for unresectable pancreatic cancer that can be used in cytoreduction followed by surgical treatment and shows promising results in palliative care. IRE is an ablative technique where electric pulses cause damage to the cell membrane leading to apoptosis without the destruction of stroma. The application of IRE increases the concentration of hydrophobic regimens like bleomycin within the tumor, what could improve the effectiveness of treatment. This fusion of those two treatments is called electrochemotherapy. In this review, the authors will discuss the radiological perspective of possible beneficial role of irreversible electroporation in relation with chemotherapy in pancreatic cancer treatment.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e30-e42"},"PeriodicalIF":1.2,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cf/16/PJR-87-46187.PMC8814896.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39609464","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":"Computed tomography scan in COVID-19: a systematic review and meta-analysis.","authors":"Pouya Mahdavi Sharif,&nbsp;Mehran Nematizadeh,&nbsp;Mahdia Saghazadeh,&nbsp;Amene Saghazadeh,&nbsp;Nima Rezaei","doi":"10.5114/pjr.2022.112613","DOIUrl":"https://doi.org/10.5114/pjr.2022.112613","url":null,"abstract":"<p><strong>Purpose: </strong>Computed tomography (CT) scan is a commonly used tool for the diagnosis of the novel coronavirus disease 2019 (COVID-19), similarly to reverse transcription-polymerase chain reaction (RT-PCR). Because of the limitations of RT-PCR, there is growing interest in the usability of the CT scan. The present systematic review and meta-analysis aims to summarize the available data on the CT scan features of COVID-19.</p><p><strong>Material and methods: </strong>We conducted a systematic search in electronic databases to find eligible studies published between 1 December 2019 and 4 April 2020, which investigated the computed tomographic features of patients with COVID-19. All preprint and peer-reviewed articles were included. No language limitation was applied. For proportional data, pooled prevalence was calculated using a Freeman-Tukey double arcsine transformation, with a 95% confidence interval (CI).</p><p><strong>Results: </strong>Eighty-six studies were eligible to be included in the meta-analysis. For 7956 patients, the most common CT findings were bilateral pattern of involvement (78%; 95% CI: 0.73-0.82; <i>p</i> < 0.001), involvement of more than 1 lobe (75%; 95% CI: 0.68-0.82; <i>p</i> < 0.001), ground-glass opacities (GGO) (73%; 95% CI: 0.67-0.78; <i>p</i> < 0.001), and peripheral distribution of signs (69%; 95% CI: 0.61-0.76; <i>p</i> < 0.001). Only 5% of patients had a normal CT scan (95% CI:0.03-0.07; <i>p</i> < 0.001). The proportion of paediatric patients (age < 18 years) with unremarkable CT findings was higher (40%; 95% CI: 0.27-0.55; <i>p</i> < 0.001). Subgroup analysis showed that patients with the severe or critical type of COVID-19 were more likely to have pleural effusion (RR 7.77; 95% CI: 3.97-15.18; <i>p</i> < 0.001) and consolidation (RR 3.13; 95% CI: 1.57-6.23; <i>p</i> < 0.001). CT results in patients with COVID-19 were comparable with those of people having pneumonia from other causes, except for the lower incidence of consolidation (RR 0.81; 95% CI: 0.71-0.91; <i>p</i> < 0.001) and higher risk of showing GGO (RR 1.45; 95% CI: 1.13-1.86; <i>p</i> < 0.001). The mortality rate was slightly higher in patients with bilateral involvement (RR 3.19; 95% CI: 1.07-9.49; <i>p</i> = 0.04).</p><p><strong>Conclusions: </strong>Our study results show that COVID-19 shares some features with other viral types of pneumonia, despite some differences. They commonly present as GGO along with vascular thickening, air bronchogram and consolidations. Normal CT images, lymphadenopathies, and pleural effusions are not common. Consolidations and pleural effusions correlate with more severe disease. CT features are different between COVID-19 and non-COVID-19 pneumonia. Also, they differ by age, disease severity, and outcomes within COVID-19 patients.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":" ","pages":"e1-e23"},"PeriodicalIF":1.2,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fc/fb/PJR-87-46168.PMC8814899.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39609463","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":"Advanced multiparametric MRI-based scoring for isocitrate dehydrogenase mutation prediction of gliomas.","authors":"Bharat Hosur,&nbsp;Chirag Kamal Ahuja,&nbsp;Navneet Singla,&nbsp;Kirti Gupta,&nbsp;Paramjeet Singh","doi":"10.5114/pjr.2022.121549","DOIUrl":"https://doi.org/10.5114/pjr.2022.121549","url":null,"abstract":"<p><strong>Purpose: </strong>To propose an advanced multiparametric magnetic resonance imaging (MRI)-based scoring system and evaluate its diagnostic accuracy with respect to the isocitrate dehydrogenase (IDH) mutation status of gliomas.</p><p><strong>Material and methods: </strong>This prospective observational study included 50 consecutive patients with suspected gliomas, enrolled for pre-operative MRI. The exclusion criteria were previous surgery, biopsy, or chemo/radiotherapy and contraindications to the gadolinium-based contrasts or MRI acquisition. A standardized brain-MRI protocol using a 3-Tesla machine and 16-channel head coil consisted of pre-contrast axial-T2WI, FLAIR, DTI, 3D-ASL perfusion, SWI, 3D-T1WI, and post-contrast axial-DSC perfusion followed by 3D-T1WI and MR spectroscopy. ROIs were drawn from the tumoral centre, periphery, and peritumoral oedema (3 ROIs for each) followed by normalization using the ROIs over the contralateral normal white matter. The cut-off values for the statistically significant (<i>p</i> <0.05) continuous variables were derived by drawing receiver operating characteristic (ROC) curves. A 7-point \"glioma-score\" was derived from the 3 categorical (T2/FLAIR-mismatch, contrast enhancement, and intratumoral susceptibility signals) and 4 continuous ROI-based variables (ADC, FA, ASL-CBF, and DSC-CBV).</p><p><strong>Results: </strong>The predictability of IDH mutant status using the multiparametric advanced MRI-based glioma score was statistically significant (sensitivity = 69.23%, specificity = 95.65%, PPV = 94.74%, NPV = 73.33%). A glioma score of more than 4.5 out of 7 predicted the IDH-mutation status with higher specificity and sensitivity compared to each of the individual imaging variables.</p><p><strong>Conclusions: </strong>The advanced multiparametric MRI-based glioma score can predict the IDH-mutation status with high statistical significance.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":"87 ","pages":"e626-e634"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fc/a4/PJR-87-48280.PMC9749783.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10399537","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":"The clinical significance of biliary findings in magnetic resonance enterography of patients with inflammatory bowel disease.","authors":"Sara Momtazmanesh,&nbsp;Mehran Gholami,&nbsp;Neda Pak,&nbsp;Ali Reza Sima,&nbsp;Seyed Ali Montazeri,&nbsp;Shadi Kolahdoozan,&nbsp;Homayoun Vahedi,&nbsp;Amir Reza Radmard","doi":"10.5114/pjr.2022.121443","DOIUrl":"https://doi.org/10.5114/pjr.2022.121443","url":null,"abstract":"<p><strong>Purpose: </strong>Given the association of inflammatory bowel disease (IBD) and primary sclerosing cholangitis (PSC), we aimed to investigate the clinical relevance of abnormal hepatobiliary findings on magnetic resonance enterography (MRE) of IBD patients considering the risk of over- or underestimation of PSC at MRE.</p><p><strong>Material and methods: </strong>Using the MRE dataset of patients referring to a tertiary hospital and the National Registry of Crohn's and Colitis, 69 MREs, including 23 IBD-PSC, 23 IBD-without PSC, and 23 healthy controls (HC), were retrospectively reviewed by 2 experienced radiologists blinded to the clinical data, to evaluate hepatobiliary abnormalities. Sensitivity, specificity, and likelihood ratios were calculated.</p><p><strong>Results: </strong>Bile duct irregularities were the most common finding in the IBD-PSC group, with a frequency of 91%. Intra- and extrahepatic bile duct (IHBD and EHBD) irregularities were observed in 87% and 78% of PSC patients, respectively. Higher frequency of IHBD and EHBD wall thickening, bile duct dilation, EHBD stricture, and periportal oedema were observed in the IBD-PSC group. Peribiliary T2-weighted hyperintensities and contrast-enhancement were significantly more common in the IBD-PSC group than in the IBD and HC groups (48% and 35%, respectively) (<i>p</i> < 0.001). Detection of biliary irregularities on MRE had a specificity of 94% (95% CI: 82-99%), a sensitivity of 91% (95% CI: 72-99%), and a positive likelihood ratio of 14.0 (95% CI: 4.7-42.1) for the diagnosis of PSC.</p><p><strong>Conclusions: </strong>This study emphasizes the importance of assessing and reporting hepatobiliary abnormalities visible in the MRE of patients with IBD to avoid a delayed diagnosis of PSC.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":"87 ","pages":"e613-e621"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/78/b4/PJR-87-48265.PMC9749785.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10399540","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":"Right adrenal vein identification using unenhanced magnetic resonance imaging.","authors":"Koji Yamashita,&nbsp;Noriaki Wada,&nbsp;Seitaro Shin,&nbsp;Tetsuhiro Watanabe,&nbsp;Kiyomi Furuya,&nbsp;Shino Harada,&nbsp;Tomoyuki Noguchi","doi":"10.5114/pjr.2022.121236","DOIUrl":"https://doi.org/10.5114/pjr.2022.121236","url":null,"abstract":"<p><strong>Purpose: </strong>Unenhanced magnetic resonance imaging (MRI) is known to be useful in characterizing adrenal adenomas through the implementation of in-phase (IPI) and opposed-phase imaging (OPI) based on chemical shift artifacts. However, whether unenhanced MRI can contribute to the identification of right adrenal vein (RAV) remains unclear. The aim of this study was to evaluate the feasibility of unenhanced MRI for the identification of RAV.</p><p><strong>Material and methods: </strong>This retrospective study reviewed 30 patients (16 men; median age 60 years; range 34-76 years) who underwent MRI and subsequent adrenal venous sampling (AVS). Chemical shift MRI was acquired using echo times of 2.3 ms (OPI) and 4.6 ms (IPI) with a slice thickness of 3 mm and a gap of 1 mm. T2-weighted imaging (T2WI) was also performed. Identification of RAVs was performed by 2 independent radiologists. Inter-observer agreement on a 3-point rating scale was evaluated using κ statistics. The identification rate of RAVs was compared between OPI, IPI, and T2WI using McNemar's test.</p><p><strong>Results: </strong>Good inter-observer agreement was found for the OPI (κ = 0.744), whereas fair agreement was obtained for both other sequences (IPI: κ = 0.375; T2WI: 0.348). For both raters, the identification rate of RAVs was higher with OPI (36/60; 60.0%) than with other sequences (IPI: 16/60, 26.7%; T2WI: 9/60, 15.0%; <i>p</i> < 0.05, each).</p><p><strong>Conclusions: </strong>OPI may play a screening role in the identification of RAVs preceding AVS, which could reduce the required radiation exposure and doses of contrast agent.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":"87 ","pages":"e592-e596"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ff/7e/PJR-87-48193.PMC9749782.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10405458","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":"Percutaneous catheter drainage in retroperitoneal abscesses: a single centre's 8-year experience.","authors":"Gulsah Yildirim,&nbsp;Hakki Karakas","doi":"10.5114/pjr.2022.115815","DOIUrl":"https://doi.org/10.5114/pjr.2022.115815","url":null,"abstract":"<p><strong>Purpose: </strong>We have investigated the technical and clinical success of percutaneous catheter drainage (PCD) in retroperitoneal abscesses and factors that may affect the outcome.</p><p><strong>Material and methods: </strong>The study cohort included 45 patients (17 females and 29 males, with mean age of 56.3 years) that were treated between 2012 and 2020. Forty-seven abscesses were managed with PCD under ultrasonography, computed tomography, or fluoroscopy guidance. Patients' demographics, lesion locations, predisposing factors, clini-cal presentation, etiology, radiological findings, technical factors, and outcome parameters were presented using exploratory and descriptive statistics.</p><p><strong>Results: </strong>Abscesses were located in the psoas (<i>n</i> = 25, 55.3%), renal-perirenal (<i>n</i> = 7, 14.8%), and pararenal (<i>n</i> = 14, 29.7%) compartments. The mean preprocedural volume was 263.3 (30-1310) ml. Pain (abdominal and back) (57.4%) and fever (17%) were the most frequent presenting symptoms. The most common predisposing factors were previous surgery (<i>n</i> = 17, 36.1%) and diabetes mellitus (<i>n</i> = 11, 25.5%). Clinical success was attained in 89.3% of abscesses (definitive treatment 72.3% and partial success 17.0%). There was a statistically significant difference between the iatrogenic and non-iatrogenic groups regarding clinical success (<i>p</i> = 0.031). No mortality was encountered. The complication rate was 6.6% and were all minor. The average rate of recurrence was 10.6%. The mean time to catheter removal was 15.8 ± 13.2 days.</p><p><strong>Conclusions: </strong>PCD is a safe and effective procedure in the treatment of retroperitoneal abscesses. Procedure-related mortality, morbidity, and complication rates are low. Underlying etiology is a significant factor affecting the outcome. Nevertheless, PCD may provide definitive treatment in the majority of patients.</p>","PeriodicalId":47128,"journal":{"name":"Polish Journal of Radiology","volume":"87 ","pages":"e238-e245"},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f8/1b/PJR-87-46913.PMC9093211.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10250717","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}