Radiological Physics and Technology最新文献

Retaking assessment system based on the inspiratory state of chest X-ray image.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-19 DOI: 10.1007/s12194-025-00888-0

Naoki Matsubara, Atsushi Teramoto, Manabu Takei, Yoshihiro Kitoh, Satoshi Kawakami

{"title":"Retaking assessment system based on the inspiratory state of chest X-ray image.","authors":"Naoki Matsubara, Atsushi Teramoto, Manabu Takei, Yoshihiro Kitoh, Satoshi Kawakami","doi":"10.1007/s12194-025-00888-0","DOIUrl":"https://doi.org/10.1007/s12194-025-00888-0","url":null,"abstract":"When taking chest X-rays, the patient is encouraged to take maximum inspiration and the radiological technologist takes the images at the appropriate time. If the image is not taken at maximum inspiration, retaking of the image is required. However, there is variation in the judgment of whether retaking is necessary between the operators. Therefore, we considered that it might be possible to reduce variation in judgment by developing a retaking assessment system that evaluates whether retaking is necessary using a convolutional neural network (CNN). To train the CNN, the input chest X-ray image and the corresponding correct label indicating whether retaking is necessary are required. However, chest X-ray images cannot distinguish whether inspiration is sufficient and does not need to be retaken, or insufficient and retaking is required. Therefore, we generated input images and labels from dynamic digital radiography (DDR) and conducted the training. Verification using 18 dynamic chest X-ray cases (5400 images) and 48 actual chest X-ray cases (96 images) showed that the VGG16-based architecture achieved an assessment accuracy of 82.3% even for actual chest X-ray images. Therefore, if the proposed method is used in hospitals, it could possibly reduce the variability in judgment between operators.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of a novel respiratory motion reduction block for myocardial perfusion SPECT image quality: a phantom study.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-18 DOI: 10.1007/s12194-025-00887-1

Hajime Ichikawa, Toyohiro Kato, Takayuki Shibutani, Mitsuaki Terabe, Hideki Shimada

{"title":"Impact of a novel respiratory motion reduction block for myocardial perfusion SPECT image quality: a phantom study.","authors":"Hajime Ichikawa, Toyohiro Kato, Takayuki Shibutani, Mitsuaki Terabe, Hideki Shimada","doi":"10.1007/s12194-025-00887-1","DOIUrl":"https://doi.org/10.1007/s12194-025-00887-1","url":null,"abstract":"Patient motion, particularly due to respiration, often introduces image distortions that compromise diagnostic accuracy in myocardial perfusion single-photon emission computed tomography (SPECT). To address this issue, we developed a novel respiratory motion reduction block (RRB) designed to minimize the respiratory motion of the heart. This study aims to evaluate the impact of the cardiac-centered with RRB (CCRRB) orbit, achieved using the RRB, on myocardial perfusion SPECT image quality. SPECT acquisition of a cardiac phantom was performed at the circular, neighboring elliptical (NE), and CCRRB orbits. The CCRRB orbit was achieved with RRB placed in front of the phantom based on the NE orbit. Count profile curves of the lesion and uniform slice images were obtained from the circumferential profile. Lesion contrast, normal accumulation uniformity, and count distortion were calculated from the circumferential profiles. Full width at half maximum (FWHM) was measured in the lateral, anterior, septal, and inferior walls of the myocardium, and both the mean and standard deviation (SD) were calculated. The lesion contrast was the highest in the NE orbit, slightly lower in the CCRRB orbit, and remarkably lower in the circular orbit than in the NE orbit. The uniformity and count distortion were superior for the CCRRB orbits. The SD of FWHM was greater in the circular and NE orbits. The CCRRB orbit effectively improves uniformity in SPECT imaging, preserving lesion contrast and spatial resolution. The CCRRB orbit provides a practical, accessible approach for enhancing image quality in clinical settings.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiation dose at the eye lens of patients undergoing radiation therapy for head and neck cancer.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-09 DOI: 10.1007/s12194-025-00886-2

Panatsada Awikunprasert, Jumneanphan Rueansri, Kittipong Suangamiam, Chaknarin Koedsawat, Surasak Tamon, Nattakarn Kittiva, Tanapol Dachviriyakij

{"title":"Radiation dose at the eye lens of patients undergoing radiation therapy for head and neck cancer.","authors":"Panatsada Awikunprasert, Jumneanphan Rueansri, Kittipong Suangamiam, Chaknarin Koedsawat, Surasak Tamon, Nattakarn Kittiva, Tanapol Dachviriyakij","doi":"10.1007/s12194-025-00886-2","DOIUrl":"https://doi.org/10.1007/s12194-025-00886-2","url":null,"abstract":"Linear accelerator irradiation, the most common treatment for head and neck cancer, requires accurate prediction of lens radiation doses to ensure patient safety. The eye lens, being highly radiosensitive and vulnerable to scattered radiation, is at increased risk of developing cataracts. This study compared radiation doses calculated by the treatment planning system (TPS) with those measured in vivo using optically stimulated luminescence (OSL) dosimeters placed on the eyes of 18 patients undergoing radiotherapy for various head and neck cancers. Bland-Altman analysis was used to assess the agreement between the two methods. The results showed that TPS-calculated doses were significantly higher than OSL-measured doses, with TPS values averaging twice as high. However, in three cases, the measured OSL doses exceeded the TPS predictions. The Bland-Altman plot revealed poor agreement between the two methods. The mean doses to the left and right eye lenses were 182 cGy and 170 cGy, respectively, with the highest recorded doses being 492 cGy for the left eye and 513 cGy for the right eye. Patients with nasopharyngeal cancer received the highest doses, and four patients had doses in the 3-5 Gy range, increasing their risk of cataracts. These findings emphasize the importance of validating TPS accuracy in clinical practice to ensure optimal patient care. Further research is necessary to explore the discrepancies between dose measurements and enhance TPS precision, improving clinical outcomes and patient safety in radiation therapy.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143374629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proposal of a hybrid dosimetry method for improving work efficiency in CT dose management.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-07 DOI: 10.1007/s12194-025-00881-7

Tomokazu Shohji, Reika Tomioka, Anna Isaka, Ami Yuzawa, Nobutaka Yanano, Ryota Tsukada, Hideki Kato

{"title":"Proposal of a hybrid dosimetry method for improving work efficiency in CT dose management.","authors":"Tomokazu Shohji, Reika Tomioka, Anna Isaka, Ami Yuzawa, Nobutaka Yanano, Ryota Tsukada, Hideki Kato","doi":"10.1007/s12194-025-00881-7","DOIUrl":"https://doi.org/10.1007/s12194-025-00881-7","url":null,"abstract":"In recent years in JAPAN, with the reform of work styles and the expansion of radiologists' duties, there has been a demand for more work improvement. Among them, many regulations surrounding computed tomography (CT) tasks require a large amount of time and manpower. In this study, we propose a hybrid method between leakage X-ray dosimetry and CT dose index (CTDI) measurement using a CTDI phantom used for CTDI measurement and elucidate the usefulness of the hybrid method. The results of the CTDI phantom generated more scattered radiation in the CT room; therefore, the previously used thoracoabdominal phantom could be replaced with the CTDI phantom. The number of exposures can be reduced by a factor of 15, work hours by 20 min, and the number of workers by two when evaluated as an average of four facilities using the hybrid method. The hybrid method enables the determination of the reproducibility of the output X-ray dose during leakage X-ray dosimetry, thereby ensuring the reliability of periodic leakage X-ray dosimetry. The use of the proposed hybrid method is reasonable because it is effective for work improvement, such as reducing work time and the number of workers.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143371258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selection of Radiological Physics and Technology Awards 2024.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-06 DOI: 10.1007/s12194-025-00884-4

Nobuyuki Kanematsu, Katsuhiro Ichikawa, Noriyuki Kadoya, Tosiaki Miyati, Takeji Sakae, Junji Shiraishi, Yoshikazu Uchiyama, Yoichi Watanabe, Taiga Yamaya

引用次数: 0

IF 1.7

Radiological Physics and Technology Pub Date : 2025-02-05 DOI: 10.1007/s12194-025-00882-6

Asuka Kikuchi, Shoichi Watanuki, Hiroshi Watabe, Manabu Tashiro

{"title":"Age-related sensitivity deterioration evaluation of positron emission tomography utilizing cross-calibration factor measurement data.","authors":"Asuka Kikuchi, Shoichi Watanuki, Hiroshi Watabe, Manabu Tashiro","doi":"10.1007/s12194-025-00882-6","DOIUrl":"https://doi.org/10.1007/s12194-025-00882-6","url":null,"abstract":"Age-related deterioration in positron emission tomography (PET) systems can be monitored using cross-calibration scans for scanner calibration. This study aimed to evaluate changes in the sensitivity of a PET system over time using routinely collected cross-calibration factor (CCF) measurement data and NEMA sensitivity measurement data acquired at our facility. We used CCF measurement data acquired over eight years, from 2016 to 2023. The count rates were calculated from raw data. The NEMA sensitivity measurements were also performed in 2017 and 2024 to compare with the sensitivities obtained from the CCF measurements. The PET images were reconstructed using the CCF data. A region of interest (ROI) was placed at the center of the PET images and count rates from the PET images were obtained. The sensitivity changes in the CCF data showed a linear decrease in sensitivity over eight years, with a mean annual reduction rate of approximately 2.0%. A comparison of the NEMA sensitivity measurements indicated a decrease in sensitivity, with a 12% reduction over eight eight years. The sensitivity was higher at the center of the axial field of view than at the edges. The ROI data also showed a linear decrease in sensitivity. This is consistent with the CCF data. Additionally, the coefficient of variation increased towards the edge of the slice. By utilizing the CCF measurement data, we obtained age-related changes in the PET system, suggesting that the PET system used in our facility may experience an annual sensitivity deterioration of approximately 2.0%.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143190933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peripheral dose assessment in radiation therapy using photon beams: experimental results with optically stimulated luminescence dosimeter.

IF 1.7

Radiological Physics and Technology Pub Date : 2025-01-25 DOI: 10.1007/s12194-025-00883-5

Y Retna Ponmalar, Ravikumar Manickam, Henry Finlay Godson, Kadirampatti Mani Ganesh, Sathiyan Saminathan, Varatharaj Chandraraj, Arun Raman

{"title":"Peripheral dose assessment in radiation therapy using photon beams: experimental results with optically stimulated luminescence dosimeter.","authors":"Y Retna Ponmalar, Ravikumar Manickam, Henry Finlay Godson, Kadirampatti Mani Ganesh, Sathiyan Saminathan, Varatharaj Chandraraj, Arun Raman","doi":"10.1007/s12194-025-00883-5","DOIUrl":"https://doi.org/10.1007/s12194-025-00883-5","url":null,"abstract":"The estimation of peripheral dose (PD) is vital in cancer patients with long life expectancy. Assessment of PD to radiosensitive organs is important to determine the possible risk of late effects. An attempt has been made to assess the peripheral dose using optically stimulated luminescence dosimeter (OSLD) with megavoltage photon beams as a function of field size, depth, energy, and distance from the field edge. The PD measurements were carried out at 13 locations starting from 1.5 cm to 20.8 cm from radiation field edge for three different field sizes at three different depths with 6 and 18 MV photon beams. In addition, the measurements were carried out to analyze the response in PD due to the presence of wedge. The %PD decreases gradually with an increase in distance from the radiation field edge. The %PD at surface for 10 × 10cm2 with 6MV photon beams was 6.77 ± 0.32% and 1.0 ± 0.04% at 1.5 cm and 20.8 cm away from field edge. For 20 × 20 cm2 field, %PD was found to be much higher at surface than at 5 cm depth for all distances from field edge. This study demonstrates the suitability of OSLD for PD assessment in megavoltage photon beams. The PD increases as field size increases, primarily due to greater amount of out-of-field scatter generated by larger surface area of the collimator defining the larger field size. An enhancement in PD was observed with wedge when the thick end was oriented towards the OSLDs. This study assessed PD that would be a risk factor of the normal tissue complication and secondary cancer induction.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143041542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of obtaining medical records and laboratory data on the sensitivity of diagnostic imaging assessment by radiological technologists. 获取病历和实验室数据对放射技师诊断影像评估敏感性的影响。

IF 1.7

Radiological Physics and Technology Pub Date : 2025-01-16 DOI: 10.1007/s12194-025-00880-8

Norikazu Koori, Takahide Kato, Shohei Yamamoto, Mayumi Yasui, Kazuma Kurata, Takeshi Hasegawa, Fuminari Nishikawa, Masami Sugiyama, Reina Ishiguro, Yohei Takamatsu, Maho Higuchi, Hiroki Kobayashi, Hiroki Nakane, Hiraku Fuse, Kota Sasaki, Shin Miyakawa, Kenji Yasue, Masato Takahashi, Naoki Nosaka

{"title":"Influence of obtaining medical records and laboratory data on the sensitivity of diagnostic imaging assessment by radiological technologists.","authors":"Norikazu Koori, Takahide Kato, Shohei Yamamoto, Mayumi Yasui, Kazuma Kurata, Takeshi Hasegawa, Fuminari Nishikawa, Masami Sugiyama, Reina Ishiguro, Yohei Takamatsu, Maho Higuchi, Hiroki Kobayashi, Hiroki Nakane, Hiraku Fuse, Kota Sasaki, Shin Miyakawa, Kenji Yasue, Masato Takahashi, Naoki Nosaka","doi":"10.1007/s12194-025-00880-8","DOIUrl":"https://doi.org/10.1007/s12194-025-00880-8","url":null,"abstract":"The purpose of this study is to clarify the influence of acquiring medical record information and laboratory data on the sensitivity of detecting imaging findings among Japanese radiological technologists (RTs). RTs were presented with patient's information in three distinct sequences for detecting imaging findings. True positives (TP) were identified and categorized into three groups: Group 1 (image + chief complaint), Group 2 (image + chief complaint + medical record), and Group 3 (image + chief complaint + medical record + laboratory data). Compared with Group 1, Groups 2 and 3 exhibited up to 8.3% and 16.7% higher sensitivity, respectively. Notably, Group 3 demonstrated up to 13.3% higher sensitivity than that of Group 2. Obtaining medical record information and laboratory data improved the sensitivity of imaging findings detected by RTs. This study provides valuable insights for optimizing diagnostic protocols and improving patient outcomes by leveraging supplementary clinical data to augment diagnostic accuracy.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143013617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dosimetric impact of arc simulation angular resolution in single-isocentre multi-target stereotactic radiosurgery. 弧模拟角分辨率在单等心多靶点立体定向放射手术中的剂量学影响。

IF 1.7

Radiological Physics and Technology Pub Date : 2025-01-15 DOI: 10.1007/s12194-024-00876-w

Perumal Murugan, Ravikumar Manickam, Tamilarasan Rajamanickam, Sivakumar Muthu, C Dinesan, Karthik Appunu, Abishake Murali

{"title":"Dosimetric impact of arc simulation angular resolution in single-isocentre multi-target stereotactic radiosurgery.","authors":"Perumal Murugan, Ravikumar Manickam, Tamilarasan Rajamanickam, Sivakumar Muthu, C Dinesan, Karthik Appunu, Abishake Murali","doi":"10.1007/s12194-024-00876-w","DOIUrl":"https://doi.org/10.1007/s12194-024-00876-w","url":null,"abstract":"This study evaluates the dosimetric impact of arc simulation angular resolution in VMAT-based Single Isocentre Multiple Target (SIMT) SRS, focusing on their dependence on target size, isocentre distance, number of arcs, and arc type. A phantom study analysed angular resolution (0.5°, 1°, 2°) effects on dosimetric accuracy for PTVs of 0.5 cm, 1 cm, and 2 cm at distances of 2.5 cm, 5 cm, and 7.5 cm from the isocentre using conformal arc and VMAT plans. Clinical validation involved 32 patients with 2-8 brain metastases, comparing plans recalculated at 1° and 2° resolutions. Dosimetric parameters included: Dnear-Min, Dnear-Max, Dmean, Dmedian, TVPIV, CIPaddick, GI, and Brain-GTV 12 Gy. For the 0.5 cm diameter target located at 7.5 cm distance from isocentre, phantom results showed TVPIV, Dmean, and GI deviations of 7.91%, 1.8%, and 0.85 for single-conformal arcs, which decreased to 4.84%, 1.3%, and 0.77 with 4-conformal arcs, and 3.4%, 0.96%, and 0.5 for 4-arc VMAT. Deviations varied based on target size, isocentre distance, number of arcs, and arc type. Clinical results mirrored the phantom study, with maximum TVPIV and GI deviations of 2.76% and 0.65 for the smallest target (0.6 cm) located at 7.5 cm distance for four-arc VMAT. Other dosimetric parameters showed minimal variations (< 1%). Correlation analysis revealed strong associations between dosimetric differences, target size, and distance (r = 0.6-0.78 for small targets). MANOVA identified TVPIV as the only significant parameter (p = 0.01). A 1° angular resolution significantly improves dosimetric accuracy for small, distally located targets in SIMT SRS.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142985174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiomics and dosiomics approaches to estimate lung function after stereotactic body radiation therapy in patients with lung tumors. 放射组学和剂量组学方法评估肺肿瘤患者立体定向放射治疗后的肺功能。

IF 1.7

Radiological Physics and Technology Pub Date : 2025-01-14 DOI: 10.1007/s12194-024-00877-9

Yoshiro Ieko, Noriyuki Kadoya, Shohei Tanaka, Koyo Kikuchi, Takaya Yamamoto, Hisanori Ariga, Keiichi Jingu

{"title":"Radiomics and dosiomics approaches to estimate lung function after stereotactic body radiation therapy in patients with lung tumors.","authors":"Yoshiro Ieko, Noriyuki Kadoya, Shohei Tanaka, Koyo Kikuchi, Takaya Yamamoto, Hisanori Ariga, Keiichi Jingu","doi":"10.1007/s12194-024-00877-9","DOIUrl":"https://doi.org/10.1007/s12194-024-00877-9","url":null,"abstract":"Lung function assessment is essential for determining the optimal treatment strategy for radiation therapy in patients with lung tumors. This study aimed to develop radiomics and dosiomics approaches to estimate pulmonary function test (PFT) results in post-stereotactic body radiation therapy (SBRT). Sixty-four patients with lung tumors who underwent SBRT were included. Models were created to estimate the PFT results at 0-6 months (Cohort 1) and 6-24 months (Cohort 2) after SBRT. Radiomics and dosiomics features were extracted from the computed tomography (CT) images and dose distributions, respectively. To estimate the PFT results, Models A (dose-volume histogram [DVH] + radiomics features) and B (DVH + radiomics + dosiomics features) were created. In the PFT results, the forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) were estimated using each model, and the ratio of FEV1 to FVC (FEV1/FVC) was calculated. The Pearson's correlation coefficient (Pearson r) and area under the curve (AUC) for FEV1/FVC (< 70%) were calculated. The models were evaluated by comparing them with the conventional calculation formulae (Conventional). The Pearson r (FEV1/FVC) values were 0.30, 0.64, and 0.69 for Conventional and Models A and B (Cohort 2), respectively, and the AUC (FEV1/FVC < 70%) values were 0.63, 0.80, and 0.78, respectively. This study demonstrates the possibility of estimating lung function after SBRT using radiomics and dosiomics features based on planning CT images and dose distributions.","PeriodicalId":46252,"journal":{"name":"Radiological Physics and Technology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142980394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0