Polish journal of radiology最新文献

{"title":"Preoperative localisation of parathyroid adenomas using ultrasound-guided methylene blue dye injection.","authors":"Mohamed M Harraz, Ahmed H Abouissa, Ahmed Ibrahim Tawfik, Amir Monir Eltantawy","doi":"10.5114/pjr.2024.136402","DOIUrl":"10.5114/pjr.2024.136402","url":null,"abstract":"<p><strong>Purpose: </strong>Primary hyperparathyroidism is mainly caused by parathyroid adenomas. Preoperative imaging can be performed using different imaging modalities, e.g. ultrasound (US), radionuclide scanning, magnetic resonance imaging, and computed tomography, often used in combination. Currently, US-guided blue dyes, especially methylene blue (MB) injection, are used to identify parathyroid tumours.</p><p><strong>Material and methods: </strong>This was a retrospective study of 228 patients. Preoperative ultrasound, scintigraphy, and bio-chemistry were performed on all patients, and fine-needle aspiration procedures were performed on suspected patients. Using preoperative US-G injection with MB dye, target tumours were injected in all cases.</p><p><strong>Results: </strong>A total of 163 patients were female and 65 were male. The mean age was 42.5 years. US was positive in 203 (89%) cases, 25 (11%) were negative, and all had a positive sestamibi scan (100%). US-G needle injections with MB dye of target tumours were successful in all cases. The average diameter of the lesions was 18 mm. All had positive intraoperative identification of parathyroid adenoma and MB staining (100% accuracy, 100% sensitivity, and 100% specificity). Operating time (min ± SD) was 22.7 ± 11.5 minutes, and the success rate was 100%. All were parathyroid adenomas histologically. Intraoperative parathormone hormone decreased in all patients. In postoperative follow-up, all were normocalcaemic with no local or systemic complications.</p><p><strong>Conclusions: </strong>Localisation of small parathyroid adenomas by US-guided blue dye injection is a safe, simple, and useful tool when performing parathyroidectomy with no complications.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e134-e139"},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976624/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320334","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":"Preoperative embolisation of renal cell carcinoma metastases to the spine - evaluation of procedural and clinical outcome.","authors":"Paweł Szmygin, Maciej Szmygin, Krzysztof Pyra, Władysław Rogała, Paweł Andrzejewicz, Tomasz Jargiełło","doi":"10.5114/pjr.2024.136398","DOIUrl":"10.5114/pjr.2024.136398","url":null,"abstract":"<p><strong>Purpose: </strong>Renal cell carcinoma (RCC) is the fourth most common metastatic tumour of the spine. RCC metastases are highly vascular and might cause life-threatening intraoperative bleeding. That is why preoperative embolisation is performed to reduce intraoperative blood loss. The aim of this study was to evaluate the procedural and clinical outcomes of preoperative embolisation of RCC metastases to the vertebral column.</p><p><strong>Material and methods: </strong>In this single-centre retrospective study, data of 59 consecutive patients undergoing endovascular treatment prior to surgical resection were collected and evaluated. In all cases superselective catheterisation and occlusion of feeding vessels was attempted and performed if deemed safe and possible. Completeness of embolisation, procedural details, and the complication rate were evaluated. Surgical procedures were carried out within 48 hours after embolisation. The surgical approach was dependent on the anatomical site and osseous destruction. Intraoperative blood loss was estimated.</p><p><strong>Results: </strong>Fifty-nine patients with a mean age of 63 years were included. Complete embolisation was successful in 76% (45/59) and partial in 15% (9/59). Microspheres were the most commonly used embolic material. In 5 cases (8%) safe occlusion was not possible due to the radiculomedullary artery originating from the same pedicle as the tumour. Minor complications (vomiting, increased pain) occurred in 8 patients. Paraplegia (one transient and one permanent) was noted in 2 cases. Estimated intraoperative blood loss was 830 ± 410 ml.</p><p><strong>Conclusions: </strong>The results of our study show that preoperative embolisation is a feasible and effective method with a relatively high rate of occlusion and low complication rate.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e128-e133"},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976618/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140320333","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":"Epicardial fat volume and its association with cardiac arrhythmias in CT coronary angiography.","authors":"Matthias Weidlich, Bernd Hamm, Lars-Arne Schaafs, Thomas Elgeti","doi":"10.5114/pjr.2024.135797","DOIUrl":"10.5114/pjr.2024.135797","url":null,"abstract":"<p><strong>Purpose: </strong>This retrospective study aimed to investigate the epicardial fat volume in cardiac computed tomography (CT), its relationship with cardiac arrhythmias, and its correlation with the coronary artery disease reporting and data system (CAD-RADS) score.</p><p><strong>Material and methods: </strong>Ninety-six patients who underwent CT coronary angiography (CTCA) were included in this study. Patient data, including demographic information, clinical history, and imaging data were collected retrospectively. Epicardial fat volume was quantified using a standardised algorithm, the CAD-RADS scoring system was applied to assess the extent of coronary artery disease (CAD). Descriptive statistics, correlation analyses, and receiver operating characteristics methods were used.</p><p><strong>Results: </strong>The study found a significant correlation between epicardial fat volume and CAD-RADS score (<i>r</i>² = 0.31; <i>p</i> < 0.001), indicating the known influence of epicardial fat on CAD risk. Moreover, patients with higher epicardial fat volumes were more likely to experience cardiac tachyarrhythmia (<i>p</i> < 0.001). Receiver operating characteristic analysis established a threshold value of 123 cm³ for epicardial fat volume to predict tachyarrhythmia with 80% sensitivity (AUC = 0.69).</p><p><strong>Conclusions: </strong>In this study a volume of at least 123 cm³ epicardial fat in native coronary calcium scans is associated with cardiac tachyarrhythmia. In these patients, careful selection of suitable imaging protocols is advised.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e122-e127"},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953510/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178384","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":"Anomalous left coronary artery from the pulmonary artery (ALCAPA) in adult patients - a multimodality imaging approach.","authors":"Alexander Suchodolski, Jan Głowacki, Jarosław Wasilewski, Mariola Szulik","doi":"10.5114/pjr.2024.135736","DOIUrl":"10.5114/pjr.2024.135736","url":null,"abstract":"<p><strong>Purpose: </strong>Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital ano-maly of the origin of the coronary arteries. The prevalence of this anomaly in the adult patient population is low, and therefore there is virtually no original research on this topic. Reports are limited to case reports.</p><p><strong>Material and methods: </strong>We evaluated 16,264 computed tomography (CT) exams (cardiac and chest) performed in our heart imaging department between 2015 and 2022 on a dual-source 128-slice CT scanner (SOMATOM Definition Flash, Siemens Healthineers, Forchheim, Germany) and established a retrospective registry of adult patients (> 18 years old) with ALCAPA. The study included 7 cases. Next, we collected clinical and echocardiographic data, which could be assessed retrospectively.</p><p><strong>Results: </strong>We found 7 cases of ALCAPA in adult patients (0.043%). Three of them were female, and 4 were male. The age varied between 20 and 60 years. Echocardiographic findings, as well as the clinical course, varied widely.</p><p><strong>Conclusions: </strong>ALCAPA is an extremely rare anomaly, which nonetheless must be taken into clinical consideration. This lesion may be fatal during infancy. Data regarding adult patients is scarce. Multicentre registries are needed to establish a more detailed clinical profile of adults with this anomaly.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e115-e121"},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953507/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178420","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":"Differentiating gallbladder cancer from polyps using non-enhanced magnetic resonance imaging.","authors":"Kazuyoshi Ohki, Takao Igarashi, Hiroyuki Yakabe, Megumi Shiraishi, Takayuki Suzuki, Jun Woo, Hiroya Ojiri","doi":"10.5114/pjr.2024.135730","DOIUrl":"10.5114/pjr.2024.135730","url":null,"abstract":"<p><strong>Purpose: </strong>This retrospective cohort study assessed the efficiency of non-enhanced magnetic resonance imaging (MRI) for differentiating gallbladder cancer (GBC) from gallbladder polyps (GBPs) measuring ≥ 10 mm.</p><p><strong>Material and methods: </strong>Patients diagnosed with GBCs or GBPs ≥ 10 mm and GBC ≤ T2 stage were eligible for inclusion. Two independent blinded readers assessed the continuity of the mucosal and muscular layers (CMML; present or absent) and normalised signal intensity ratio (NIR) on the apparent diffusion coefficient map (NIR-ADC), T1-weighted image (NIR-T1WI), and T2-weighted half-Fourier acquisition single-shot turbo spin-echo image. Univariate and multivariate logistic regression analyses and interobserver agreement analyses were performed to detect predictive variables differentiating GBCs from GBPs. Receiver operating characteristic (ROC) analysis was performed to evaluate diagnostic performance. A reproducibility test was performed to verify the predictive variables.</p><p><strong>Results: </strong>Multivariate analysis showed significant differences in CMML, NIR-ADC, and NIR-T1WI (<i>p</i> < 0.001). The positive predictive value (PPV) and specificity of the absence of CMML were approximately 100%. The CMML showed the best specificity, accuracy, and PPV in the reproducibility study. The sensitivity of CMML alone was approximately 50%, whereas it increased to approximately 70% when combined with NIR-ADC. The diagnostic performance of the combination, including sensitivity, was almost like that of tumour size. The combined tumour size and CMML assessment showed higher diagnostic performance than tumour size alone.</p><p><strong>Conclusions: </strong>The absence of CMML and NIR-ADC ≤ 1.86 helped in differentiating GBCs from GBPs. Evaluation of the absence of CMML and measurement of tumour size could better aid in determining between the two than measurement of tumour size alone.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e106-e114"},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953508/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178383","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":"Severity of muscle impairment and its progression assessed using musculoskeletal magnetic resonance imaging and diffusion tension imaging in 78 boys with Duchenne muscular dystrophy: a retrospective study.","authors":"Hemangi Sane, Samson Nivins, Amruta Paranjape, Nandini Gokulchandran, Suvarna Badhe, Ritu Varghese, Prerna Badhe, Alok Sharma","doi":"10.5114/pjr.2024.135718","DOIUrl":"10.5114/pjr.2024.135718","url":null,"abstract":"<p><strong>Purpose: </strong>Duchenne muscular dystrophy (DMD) is the most common and severe form of muscular dystrophy. Current diagnostic tests like genetic testing, needle electromyography, and muscle biopsy are either not easily available or invasive, and they are impractical for assessing disease progression and treatment outcomes. Therefore, there is a need for a non-invasive and accurate investigative modality for DMD. In recent years, musculoskeletal magnetic resonance imaging (MRI-MSK) along with fractional anisotropy (FA) and diffusion tensor imaging (DTI) have become major non-invasive tools.</p><p><strong>Material and methods: </strong>T1-weighted MRI-MSK and FA measures of DTI of 78 DMD patients were retrospectively studied to identify the distinct pattern of muscle involvement and fatty infiltration as age and/or disease progresses. Correlation analysis was performed between MRI-MSK grade score vs. age, muscle strength, and Vignos scale. Spearman's rank correlation coefficient was used.</p><p><strong>Results: </strong>As age increased, the MRI grade score and Vignos score increased. There was a statistically significant high positive correlation between MRI-MSK grade score and age, and low positive correlation with Vignos scores. With increasing age, the muscle strength on manual muscle testing (MMT) and FA value decreased. There was high negative correlation with muscle strength on MMT and low positive correlation between FA values and MMT score.</p><p><strong>Conclusions: </strong>On T1-weighted MRI, a distinct pattern, extent, and distribution of lower limb muscle involvement can be seen. MRI-MSK grade score worsens with progressing age, reducing strength, and increasing functional impairment. FA alone may not be an accurate marker in assessing progression of DMD. MRI-MSK and other DTI measures should be further explored as diagnostic and prognostic tools for DMD.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e88-e105"},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953512/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178386","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 validity of abbreviated breast MRI in the diagnosis of breast cancer: a comparative study to the full breast MRI protocol using BI-RADS.","authors":"Noha Yahia Ebaid, Mostafa Mohamad Assy, Ahmed M Alaa Eldin","doi":"10.5114/pjr.2024.135474","DOIUrl":"10.5114/pjr.2024.135474","url":null,"abstract":"<p><strong>Purpose: </strong>This work aimed to determine the diagnostic performance of the magnetic resonance imaging (MRI) breast abbreviated protocol (AP) in diagnosing malignant breast lesions using BI-RADS compared with the diagnostic accuracy of the full diagnostic protocol (FDP).</p><p><strong>Material and methods: </strong>A prospective single-centre study was conducted. A total of 125 female patients with suspicious breast masses underwent MRI with the AP and the FDP. The images of AP and FDP were independently interpreted by 2 radiologists with 10 years of experience in breast imaging, and any disagreement was resolved with a third one. Using the histopathological examination as a reference test, the diagnostic effectiveness of both FDP and AP in breast cancer screening was calculated. ROC curve was utilised to estimate the optimal BI-RADS cut-off for prediction of malignancy. The difference in image interpretation time between both protocols was estimated using the Mann-Whitney test. Moreover, the inter-test agreement between both protocols was assessed using Cohen's κ test.</p><p><strong>Results: </strong>The study included 83 malignant and 42 benign lesions. AP indicated a specificity, sensitivity, and accuracy of 90.5%, 96.4%, and 94.4%, while the FDP showed a specificity, sensitivity, and accuracy of 92.9%, 100%, and 97.6%, respectively. BI-RADS 3 category was the best cut-off for prediction of malignancy. There was a significant difference between both protocols concerning the interpretation time (<i>p</i> < 0.001). There was excellent agreement between both protocols, with a κ of 0.915.</p><p><strong>Conclusions: </strong>Breast MRI AP may be employed instead of FDP to identify breast cancer with similar diagnostic performance. Moreover, it reduces the interpretation time and the scan cost.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e80-e87"},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178421","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":"Hand and wrist - what the hand surgeon wants to know from the radiologist.","authors":"Piotr Czarnecki, Maria Siemionow, Goo Hyun Baek, Michał Górecki, Leszek Romanowski","doi":"10.5114/pjr.2024.135304","DOIUrl":"10.5114/pjr.2024.135304","url":null,"abstract":"<p><p>Hand surgeons, as unique specialists, appreciate the complexity of the anatomy of the hand. A hand is not merely a group of anatomic structures but a separate organ that works by feeling, sending information to the brain, and enabling a variety of movements, from precise skills to firm tasks. Acute and chronic problems interfere with complicated hand function and potentially influence work or daily life activities for a long time. Thus, the surgeon's role is to propose appropriate treatment with predictable results. This paper attempts to specify the preoperative considerations and their influence on the choice of surgical procedure and the assessment of results potentially influencing further treatment. We have divided the manuscript by anatomical structures, which is a natural surgical assessment and planning approach. The most common problems were highlighted to introduce the method of decision-making and surgical solutions.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e70-e79"},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953511/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140178385","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":"Optimisation of virtual monoenergetic reconstructions for the diagnosis of pulmonary embolism using photon-counting detector computed tomography angiography.","authors":"Jordan H Chamberlin, Adrienn Toth, Shaun Hinen, Jim O'Doherty, Dhiraj Baruah, Dhruw Maisuria, Aaron McGuire, Heather Knight, U Joseph Schoepf, Reginald F Munden, Ismail M Kabakus","doi":"10.5114/pjr.2024.134905","DOIUrl":"10.5114/pjr.2024.134905","url":null,"abstract":"<p><strong>Purpose: </strong>Computed tomography (CT) pulmonary angiography is considered the gold standard for pulmonary embolism (PE) diagnosis, relying on the discrimination between contrast and embolus. Photon-counting detector CT (PCD-CT) generates monoenergetic reconstructions through energy-resolved detection. Virtual monoenergetic images (VMI) at low keV can be used to improve pulmonary artery opacification. While studies have assessed VMI for PE diagnosis on dual-energy CT (DECT), there is a lack of literature on optimal settings for PCD-CT-PE reconstructions, warranting further investigation.</p><p><strong>Material and methods: </strong>Twenty-five sequential patients who underwent PCD-CT pulmonary angiography for suspicion of acute PE were retrospectively included in this study. Quantitative metrics including signal-to-noise ratio (SNR) and contrast-to-noise (CNR) ratio were calculated for 4 VMI values (40, 60, 80, and 100 keV). Qualitative measures of diagnostic quality were obtained for proximal to distal pulmonary artery branches by 2 cardiothoracic radiologists using a 5-point modified Likert scale.</p><p><strong>Results: </strong>SNR and CNR were highest for the 40 keV VMI (49.3 ± 22.2 and 48.2 ± 22.1, respectively) and were inversely related to monoenergetic keV. Qualitatively, 40 and 60 keV both exhibited excellent diagnostic quality (mean main pulmonary artery: 5.0 ± 0 and 5.0 ± 0; subsegmental pulmonary arteries 4.9 ± 0.1 and 4.9 ± 0.1, respectively) while distal segments at high (80-100) keVs had worse quality.</p><p><strong>Conclusions: </strong>40 keV was the best individual VMI for the detection of pulmonary embolism by quantitative metrics. Qualitatively, 40-60 keV reconstructions may be used without a significant decrease in subjective quality. VMIs at higher keV lead to reduced opacification of the distal pulmonary arteries, resulting in decreased image quality.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e63-e69"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10867981/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139901099","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":"Association between the most superior point of patella-entrance of femoral trochlea distance ratio (SP-ET index) and chondromalacia patella: an investigation via magnetic resonance imaging.","authors":"Volkan Kızılgöz, Sonay Aydın, Mecit Kantarcı, Önder Durmaz","doi":"10.5114/pjr.2024.134844","DOIUrl":"10.5114/pjr.2024.134844","url":null,"abstract":"<p><strong>Purpose: </strong>In this study, the effect of the most superior point of patella-entrance of femoral trochlea distance ratio (SP-ET index) on chondromalacia patella (CP) was investigated with 2 reviewers.</p><p><strong>Material and methods: </strong>A total of 348 knees of 308 patients were analysed retrospectively with magnetic resonance imaging (MRI). Patients with or without CP constituted the study and the control groups in this cross-sectional investigation. Two reviewers interpreted the dataset regarding the SP-ET index. This ratio was calculated as the distance between the most superior point of patella and the entrance of femoral trochlea (β) divided by the patellar articular surface length (α). The relationship between the SP-ET index and CP was presented using independent samples T-tests, and the intraclass correlation coefficient (ICC) was calculated to reveal the interobserver differences.</p><p><strong>Results: </strong>There was excellent agreement between the reviewers regarding α, β, and SP-ET values (ICC was 0.971, 0.964, and 0.943, respectively). Higher SP-ET values were obtained for patients with CP, in comparison with patients without any chondral lesion (<i>p</i> < 0.001). A significant, positive, and moderate level of correlation was revealed between SP-ET measurements and CP grades for the total study population.</p><p><strong>Conclusions: </strong>SP-ET index showed high interobserver agreement and indicated a significant difference between patients with and without CP. Both reviewers' results indicated positive and significant correlation between the measured SP-ET values and different grades of CP for females, males, and the total study population.</p>","PeriodicalId":94174,"journal":{"name":"Polish journal of radiology","volume":"89 ","pages":"e54-e62"},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10867946/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139901034","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}