Polish journal of radiology最新文献

{"title":"Lung ultrasound in a nutshell. Lines, signs, some applications, and misconceptions from a radiologist's point of view. Part 2.","authors":"Piotr Łyźniak, Dominik Świętoń, Edyta Szurowska","doi":"10.5114/pjr.2024.139286","DOIUrl":"10.5114/pjr.2024.139286","url":null,"abstract":"<p><p>In recent years, lung ultrasound (LUS) has developed rapidly, and it is gaining growing popularity in various scenarios. There are constant attempts to introduce it to new fields. In addition, knowledge regarding lung and LUS has been augmented by the recent COVID-19 pandemics. In the first part of this review we discuss lines, signs and pheno-mena, profiles, some applications, and misconceptions. An aim of the second part of the review is mainly to discuss some advanced applications of LUS, including lung elastography, lung spectroscopy, colour and spectral Doppler, contrast-enhanced ultrasound of lung, speckled tracking of pleura, quantification of pulmonary oedema, predicting success of talc pleurodesis, asthma exacerbations, detecting chest wall invasion by tumours, lung biopsy, estimating pleural effusion volume, and predicting mechanical ventilatory weaning outcome. For this purpose, we reviewed literature concerning LUS.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e211-e224"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112417/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089488","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":"Elastography of nerves in the wrists of cyclists.","authors":"Agnieszka Dąbrowska, Łukasz Paluch, Irena Walecka, Marta Żelewska, Bartłomiej Noszczyk","doi":"10.5114/pjr.2024.139040","DOIUrl":"10.5114/pjr.2024.139040","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to investigate changes in the elasticity of the median and ulnar nerves in cyclists.</p><p><strong>Material and methods: </strong>The study included 30 cyclists and 2 non-biking reference groups that included 32 healthy volunteers and 32 individuals with ulnar nerve entrapment neuropathies. All participants underwent physical, ultrasonographic, and elastographic examinations including assessment of nerve cross-sectional area (CSA) and stiffness (SWE). The cyclists' group was tested before and after a 2-hour workout.</p><p><strong>Results: </strong>The values of ulnar nerve CSA and stiffness in Guyon's canal in resting cyclists were 5.30 ± 1.51 mm² and 49.05 ± 11.18 kPa, respectively. These values were significantly higher than in the healthy volunteers, but not higher than in the nerve entrapment group. Median nerve CSA and stiffness at rest were 9.10 ± 2.61 mm² and 38.54 ± 14.87 kPa, respectively. Both values were higher than respective values in the healthy group. Cycling induced an increase in all these parameters, although the increase in nerve stiffness was more noticeable than in CSA.</p><p><strong>Conclusions: </strong>The elasticity of the median and ulnar nerve in cyclists remains within normal limits, questioning the belief that cyclists are at risk of nerve palsy in Guyon's canal. However, cycling workout does exert compression, resulting in transient oedema of both nerves. The dynamics of changes was more noticeable in SWE examination than in conventional ultrasound, which may depend on SWE sensitivity.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e204-e210"},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112416/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089483","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":"Assessing the effectiveness of MRI, ¹⁸F-fluciclovine PET, SUV_max, and PSA in detecting local recurrence of prostate cancer after prostatectomy.","authors":"Mayur K Virarkar, Stephen K Gruschkus, Gregory C Ravizzini, Sai Swarupa R Vulasala, Sanaz Javadi, Priya Bhosale","doi":"10.5114/pjr.2024.139007","DOIUrl":"10.5114/pjr.2024.139007","url":null,"abstract":"<p><strong>Purpose: </strong>The primary objective of this study was to evaluate the discriminatory utility of magnetic resonance imaging (MRI), ¹⁸F-fluciclovine positron emission tomography (PET), maximum standardized uptake value (SUV_max), prostate-specific antigen (PSA), and combinations of these diagnostic modalities for detecting local prostate cancer recurrence in the setting of rising PSA after radical prostatectomy.</p><p><strong>Material and methods: </strong>Patients were characterised for clinical features such as Gleason score, PSA at surgery, PSA at follow-up, follow-up MRI result, follow-up PET result, follow-up SUV_max, and follow-up disease status. The utility of diagnostic parameters for detecting disease recurrence at the prostatectomy bed was assessed using receiver operating characteristics (ROC) analysis to determine the area under the curve (AUC) for each model. Sensitivity, specificity, and positive/negative predictive values were also calculated. Optimal cut-off points for continuous variables were determined based on maximum Youden's J statistics.</p><p><strong>Results: </strong>The study found that MRI had the highest concordance (96%), sensitivity (100%), specificity (91%), positive predictive value (93%), and negative predictive value (100%) among the diagnostic modalities. The AUC for MRI was 0.9545, indicating a high discriminatory ability for detecting prostate cancer local recurrence. When combined, PET and SUV_max (cut-off value of 2.85) showed an improved performance compared to using them individually, with an AUC of 0.8925.</p><p><strong>Conclusions: </strong>The analysis suggests that MRI is the most effective imaging modality for detecting local prostate cancer recurrence, with ¹⁸F-fluciclovine PET and SUV_max also showing promising combined results. PSA has moderate discriminatory utility at follow-up but can still provide valuable information in detecting prostate cancer recurrence. Further research and recent references are needed to support these findings.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e196-e203"},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089479","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":"Ultrasound measurements of the normal peroneal tubercle: validation of the normal anatomical measurements and evaluation of the intra- and interobserver reliability.","authors":"Frederik Bosmans, Tine Logghe, Filip Vanhoenacker","doi":"10.5114/pjr.2024.138791","DOIUrl":"10.5114/pjr.2024.138791","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to investigate if ultrasound could be a reliable and accurate tool to measure the size of the peroneal tubercle.</p><p><strong>Material and methods: </strong>This study measured the width, length, and height of the peroneal tubercle in 100 asymptomatic patients, comparing the measurements to prior radiographs of the foot (if available) and previously reported anatomical data. This study also assessed the intra- and interrater reliability of ultrasound as a measurement tool.</p><p><strong>Results: </strong>Our findings show that ultrasound measurements of the peroneal tubercle were consistent with values reported in the literature and prior radiographs concerning width. Both intra- and inter-observer measurements were reliable.</p><p><strong>Conclusions: </strong>This study highlights the potential of ultrasound imaging as a promising tool to measure the peroneal tubercle, and it could contribute to a better understanding of peroneal tendon disorders.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e187-e195"},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112414/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089541","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 diagnostic yield of repeat computed tomography angiography in cases of spontaneous subarachnoid haemorrhage after negative initial digital subtraction angiography.","authors":"Amonlaya Amantakul, Withawat Vuthiwong, Natthapong Khiawsa","doi":"10.5114/pjr.2024.138787","DOIUrl":"10.5114/pjr.2024.138787","url":null,"abstract":"<p><strong>Purpose: </strong>It is currently unclear how useful repeat computed tomography angiography (CTA) is in spontaneous subarachnoid haemorrhage (SAH) patients after negative initial digital subtraction angiography (DSA). The purpose of this study is to assess the yield of repeat CTA for the detection of causative vascular lesions in patients with SAH in whom there has been a negative initial DSA.</p><p><strong>Material and methods: </strong>This observational retrospective study was carried out from January 2013 to July 2022 at a single institution. Analysis of the SAH pattern on unenhanced CT showed that patients were divided into perimesencephalic SAH and diffuse SAH groups. A repeat CTA was performed on all spontaneous SAH patients who had a nega-tive initial CTA and DSA within a 2-week period. An interventional neuroradiologist and a diagnostic radiologist examined all images to search for causative vascular abnormalities.</p><p><strong>Results: </strong>Forty-seven patients were included in our study, with a median age of 55 years and a range of 28-81 years. Thirty-seven had diffuse SAH (66%), and 16 had perimesencephalic SAH (34%). The repeat CTA revealed 2 causa-tive vascular lesions (a right PICA aneurysm and a mycotic aneurysm) in 2 separate patients (yield of 4.3%), both of whom had diffuse SAH (yield of 6.5%). In retrospect, none of these vascular lesions were evident in the initial CTA and DSA. No evidence of re-bleeding was observed in the follow-up period.</p><p><strong>Conclusions: </strong>It is beneficial to repeat CTA when evaluating patients with diffuse SAH who initially present with nega-tive initial DSA. For occult aneurysms, the diagnostic yield of the follow-up CTA is 6.5%.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e179-e186"},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089496","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 and inter-reviewer agreement of colour Doppler ultrasound in haemodialysis fistula and graft complications: a multicentre prospective study.","authors":"Elshaimaa M Mohamed, Mohamad Gamal Nada, Yasmin Ibrahim Libda, Mona Mohammed Refaat","doi":"10.5114/pjr.2024.137403","DOIUrl":"10.5114/pjr.2024.137403","url":null,"abstract":"<p><strong>Purpose: </strong>Haemodialysis provides various options for vascular access, including native arteriovenous fistulas (AVFs), arteriovenous grafts (AVGs), and central intravenous catheters. However, the use of catheters should be avoided due to their association with greater risks when opposed to AVFs or AVGs. AVFs have garnered strong endorsement as the favoured vascular access choice for extended haemodialysis.</p><p><strong>Material and methods: </strong>A total of 200 patients initially diagnosed with AVF/AVG dysfunction were referred to the radiology department across 3 different institutions. The inclusion criteria involved patients who encountered repeated difficulties with access cannulation during dialysis. Conversely, the exclusion criteria comprised cases that had been solely assessed using colour Doppler ultrasound (CDUS), those exclusively evaluated with digital subtraction angiography (DSA), situations where DSA was not feasible, instances requiring immediate intervention due to acute access failure, and cases in which patients refused participation.</p><p><strong>Results: </strong>Inter-observer agreement regarding complications of AVF/AVG was very good for the identification of thrombus (κ = 1.0), seroma (κ = 0.953), aneurysm (κ = 0.851), and pseudoaneurysm (κ = 0.851). It was considered good for the detection of juxta-anastomosis stenosis (κ = 0.751) and feeding artery stenosis (κ = 0.638). However, he agreement was fair for identifying draining vein stenosis (κ = 0.380) and distal arterial steal syndrome (κ = 0.210). The overall diagnostic performance of CDUS exhibited 86% sensitivity in identifying stenosis, with a specificity of 99.1%, a positive predictive value (PPV) of 96.5%, a negative predictive value (NPV) of 97%, and an accuracy of 94.3%.</p><p><strong>Conclusions: </strong>CDUS is a noninvasive diagnostic approach for the prompt picking of AVF complications. It serves as a suitable first-line imaging modality for nonfunctional AVF due to its cost-effectiveness and accessibility. Additionally, we provide evidence of reproducibility, encouraging the diligent use of CDUS in AVF and AVG evaluation for early complication detection and management guidance.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e172-e178"},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320330","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 use of intravascular contrast media in patients with impaired kidney function - joint clinical practice position statement of the Polish Society of Nephrology and the Polish Medical Society of Radiology.","authors":"Michał Chmielewski, Zbigniew Serafin, Dorota Kamińska, Katarzyna Skrobisz, Oliwia Kozak, Piotr Olczyk, Przemysław Rutkowski, Marcin Adamczak, Edyta Szurowska, Magdalena Krajewska","doi":"10.5114/pjr.2024.136950","DOIUrl":"10.5114/pjr.2024.136950","url":null,"abstract":"<p><p>Radiological procedures utilising intravascular contrast media (ICM) are fundamental to modern medicine, enhancing diagnostics and treatment in diverse medical fields. However, the application of ICM has been constrained in patients with compromised kidney function due to perceived nephrotoxic risks, called contrast-induced nephropathy or contrastinduced acute kidney injury. Historical evidence marked ICM as a possible contributor to kidney damage. This led to restrictive guidelines advocating limited ICM use in patients with impaired renal function, preventing crucial radiographic interventions in patients with acute kidney injury (AKI) and chronic kidney disease. Recent advances challenge these traditional views. In particular, no direct causal relationship has been confirmed between contrast admi-nistration and elevated serum creatinine concentrations in humans. Furthermore, contemporary research models and meta-analyses do not associate AKI with contrast usage. This paper, prepared by a cross-disciplinary team of nephrologists and radiologists, presents updated guidelines for ICM application amid renal function impairments, emphasising the reduced nephrotoxic risks currently understood and loosening the previous restrictive approach in patients with renal dysfunction.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e161-e171"},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976626/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320336","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":"Effectiveness and safety of CT-guided drainage of abdominal abscesses with small and extra-small-bore drains: a single-centre observational study.","authors":"Grzegorz Rosiak, Jakub Franke, Krzysztof Milczarek, Dariusz Konecki, Emilia Wnuk","doi":"10.5114/pjr.2024.136420","DOIUrl":"10.5114/pjr.2024.136420","url":null,"abstract":"<p><strong>Purpose: </strong>Computed tomography (CT)-guided percutaneous drainage is an established method for the treatment of abdominal abscesses. The purpose of this study is to evaluate the effectiveness and safety of drainage of abdominal abscesses with small-bore (6F and 9F) drains.</p><p><strong>Material and methods: </strong>The analysis of a prospectively maintained database included 135 consecutive patients from a single centre with abdominal or pelvic abscesses, who underwent CT-guided drainage. Procedures were performed using a one-step trocar technique with 6F (40 procedures) or 9F (95 procedures) catheters. Technical success was defined as insertion of the drain into the abscess cavity and aspiration of the fluid sample. Clinical success was defined as resolution of infection without surgical intervention or upsizing of the drain.</p><p><strong>Results: </strong>The mean size of abscesses was 77.0 ± 28.8 mm (32-220 mm). Thick fluid was aspirated from 129 collections; 6 collections contained thin fluid. Technical success was achieved in 100% of procedures. Clinical success was achieved in 94.8% of patients. Surgical drainage was necessary in 3.7% of patients and upsizing in 1.5% of patients. Complications of Clavien-Dindo grade III were noted in 2.2% of patients without grade IV or V adverse events. The mean radiation dose in terms of Dose Length Product was 617 ± 467 mGy x cm. The mean procedure time was 28.0 ± 11.3 min.</p><p><strong>Conclusions: </strong>CT-guided drainage of abdominal abscesses with small- and very small-bore drains is usually sufficient to obtain clinical success with a low complication rate in the case of thick fluid collections.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e156-e160"},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320331","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":"External validation of the Brain Tumour Reporting and Data System (BT-RADS) in the multidisciplinary managementof post-treatment gliomas.","authors":"Kamaxi Hitendrakumar Trivedi, Amrita Guha, Meenakshi Thakur, Abhishek Mahajan, Pallavi Bhole, Tejpal Gupta","doi":"10.5114/pjr.2024.136390","DOIUrl":"10.5114/pjr.2024.136390","url":null,"abstract":"<p><strong>Purpose: </strong>To independently and externally validate the Brain Tumour Reporting and Data System (BT-RADS) for post-treatment gliomas and assess interobserver variability.</p><p><strong>Material and methods: </strong>In this retrospective observational study, consecutive MRIs of 100 post-treatment glioma patients were reviewed by two independent radiologists (RD1 and RD2) and assigned a BT-RADS score. Inter-observer agreement statistics were determined by kappa statistics. The BT-RADS-linked management recommendations per score were compared with the multidisciplinary meeting (MDM) decisions.</p><p><strong>Results: </strong>The overall agreement rate between RD1 and RD2 was 62.7% (κ = 0.67). The agreement rate between RD1 and consensus was 83.3% (κ = 0.85), while the agreement between RD2 and consensus was 69.3% (κ = 0.79). Among the radiologists, agreement was highest for score 2 and lowest for score 3b. There was a 97.9% agreement between BT-RADS-linked management recommendations and MDM decisions.</p><p><strong>Conclusions: </strong>BT-RADS scoring led to improved consistency, and standardised language in the structured MRI reporting of post-treatment brain tumours. It demonstrated good overall agreement among the reporting radiologists at both extremes; however, variation rates increased in the middle part of the spectrum. The interpretation categories linked to management decisions showed a near-perfect match with MDM decisions.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e148-e155"},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976615/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320332","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":"Qualitative and quantitative imaging features of solid pancreas tumours in portal venous phase CT: are they useful in determining tumour type and grade?","authors":"Elif Gündoğdu, Abdullah Küçükhüseyin","doi":"10.5114/pjr.2024.136423","DOIUrl":"10.5114/pjr.2024.136423","url":null,"abstract":"<p><strong>Purpose: </strong>Solid pancreatic lesions might have overlapping findings in portal venous phase computed tomography (CT). In this study, we aimed to investigate the quantitative and qualitative imaging features of solid pancreas lesions based on subtype and grade.</p><p><strong>Material and methods: </strong>The study group consisted of 159 patients with solid pancreatic tumours detected after exclusion criteria. According to the pathology results, the patients were divided into 3 groups as PDAC (pancreatic ductal adenocarcinoma, <i>n</i> = 137), PNET (pancreatic neuroendocrine tumour, <i>n</i> = 15), and SC (sarcomatoid carcinoma, <i>n</i> = 7). PDAC and PNET lesions were evaluated in 3 subgroups according to grade.</p><p><strong>Results: </strong>There was no difference between the groups in terms of age, gender, tumour localisation, and internal structure (<i>p</i> = 0.23, <i>p</i> = 0.81, <i>p</i> = 0.19, and <i>p</i> = 0.94, respectively). Qualitative features significantly differed in terms of tumour margin feature, visual tumour density, presence of cystic component, and presence of necrosis (<i>p</i> = 0.01, <i>p</i> = 0.0001, <i>p</i> = 0.002, and <i>p</i> = 0.004, respectively). Tumour size, Tm_den, Tm_den/VP_den, and Tm_den/PanP_den showed differences between groups (<i>p</i> = 0.0001, <i>p</i> = 0.002, <i>p</i> = 0.0001, <i>p</i> = 0.0001, respectively). The presence of cystic density in PDAC patients differed according to grade (<i>p</i> = 0.01).</p><p><strong>Conclusions: </strong>While ill-defined irregular margins, hypodense visual tumour density, no cystic component, low value of Tm_den, and low ratios of Tm_den/VP_den and Tm_den/PanP_den indicate PDAC, regular margins, iso-or hyperdense visual tumour density, cystic component, high value of Tm_den, and high ratios of Tm_den/VP_den and Tm_den/PanP_den indicate PNET. SC can be differentiated from them by containing necrosis and reaching larger sizes. The presence of a cystic component in PDAC patients indicates high grade.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e140-e147"},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976620/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320335","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}