Pub Date : 2019-12-16DOI: 10.1007/s13246-019-00835-5
Jamie Trapp
{"title":"Predatory publishing, hijacking of legitimate journals and impersonation of researchers via special issue announcements: a warning for editors and authors about a new scam.","authors":"Jamie Trapp","doi":"10.1007/s13246-019-00835-5","DOIUrl":"10.1007/s13246-019-00835-5","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37464233","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}
Posterior lumbar interbody fusion (PLIF) with a spacer and posterior instrument (PI) via minimally invasive surgery (MIS) restores intervertebral height in degenerated disks. To align with MIS, the spacer has to be shaped with a slim geometry. However, the thin spacer increases the subsidence and migration after PLIF. This study aimed to propose a new lumbar fusion approach using bone cement to achieve a larger supporting area than that achieved by the currently used poly aryl-ether-ether-ketone (PEEK) spacer and assess the feasibility of this approach using a sawbone model. Furthermore, the mechanical responses, including the range of motion (ROM) and bone stress with the bone cement spacer were compared to those noted with the PEEK spacer by finite element (FE) simulation. An FE lumbar L3-L4 model with PEEK and bone cement spacers and PI was developed. Four fixing conditions were considered: intact lumbar L3-L4 segment, lumbar L3-L4 segment with PI, PEEK spacer plus PI, and bone cement spacer plus PI. Four kinds of 10-NM moments (flexion, extension, lateral bending, and rotation) and two different bone qualities (normal and osteoporotic) were considered. The bone cement spacer yielded smaller ROMs in extension and rotation than the PEEK spacer, while the ROMs of the bone cement spacer in flexion and lateral bending were slightly greater than with the PEEK spacer. Compared with the PEEK spacer, peak contact pressure on the superior surface of L4 with the bone cement spacer in rotation decreased by 74% (from 8.68 to 2.25 MPa) and 69.1% (from 9.1 to 2.82 MPa), respectively, in the normal and osteoporotic bone. Use of bone cement as a spacer with PI is a potential approach to decrease the bone stress in lumbar fusion and warrants further research.
通过微创手术（MIS）使用间隔器和后路器械（PI）进行后路腰椎椎体间融合术（PLIF）可恢复退化椎间盘的椎间高度。为了与 MIS 保持一致，间隔器必须采用纤细的几何形状。然而，较薄的垫片会增加 PLIF 术后的下沉和移位。本研究旨在提出一种新的腰椎融合方法，使用骨水泥获得比目前使用的聚芳醚酮（PEEK）垫片更大的支撑面积，并使用锯骨模型评估这种方法的可行性。此外，还通过有限元（FE）模拟将骨水泥垫片与 PEEK 垫片的机械响应（包括运动范围（ROM）和骨应力）进行了比较。建立了一个带有 PEEK 和骨水泥垫片及 PI 的腰椎 L3-L4 FE 模型。考虑了四种固定条件：完整的腰椎 L3-L4 节段、带 PI 的腰椎 L3-L4 节段、PEEK 垫片加 PI 以及骨水泥垫片加 PI。考虑了四种 10-NM 扭矩（屈曲、伸展、侧弯和旋转）和两种不同的骨质（正常和骨质疏松）。骨水泥垫片的伸展和旋转ROM小于PEEK垫片，而骨水泥垫片的屈曲和侧弯ROM略大于PEEK垫片。与PEEK垫片相比，使用骨水泥垫片的正常骨和骨质疏松骨在旋转时L4上表面的接触压力峰值分别降低了74%（从8.68兆帕降至2.25兆帕）和69.1%（从9.1兆帕降至2.82兆帕）。使用骨水泥作为带有 PI 的垫片是降低腰椎融合术中骨应力的一种潜在方法，值得进一步研究。
{"title":"Computational comparison of bone cement and poly aryl-ether-ether-ketone spacer in single-segment posterior lumbar interbody fusion: a pilot study.","authors":"Chih-Wei Chang, Yu-Hsuan Chung, Chia-Jung Chang, Yen-Nien Chen, Chun-Ting Li, Chih-Han Chang, Yao-Te Peng","doi":"10.1007/s13246-019-00832-8","DOIUrl":"10.1007/s13246-019-00832-8","url":null,"abstract":"<p><p>Posterior lumbar interbody fusion (PLIF) with a spacer and posterior instrument (PI) via minimally invasive surgery (MIS) restores intervertebral height in degenerated disks. To align with MIS, the spacer has to be shaped with a slim geometry. However, the thin spacer increases the subsidence and migration after PLIF. This study aimed to propose a new lumbar fusion approach using bone cement to achieve a larger supporting area than that achieved by the currently used poly aryl-ether-ether-ketone (PEEK) spacer and assess the feasibility of this approach using a sawbone model. Furthermore, the mechanical responses, including the range of motion (ROM) and bone stress with the bone cement spacer were compared to those noted with the PEEK spacer by finite element (FE) simulation. An FE lumbar L3-L4 model with PEEK and bone cement spacers and PI was developed. Four fixing conditions were considered: intact lumbar L3-L4 segment, lumbar L3-L4 segment with PI, PEEK spacer plus PI, and bone cement spacer plus PI. Four kinds of 10-NM moments (flexion, extension, lateral bending, and rotation) and two different bone qualities (normal and osteoporotic) were considered. The bone cement spacer yielded smaller ROMs in extension and rotation than the PEEK spacer, while the ROMs of the bone cement spacer in flexion and lateral bending were slightly greater than with the PEEK spacer. Compared with the PEEK spacer, peak contact pressure on the superior surface of L4 with the bone cement spacer in rotation decreased by 74% (from 8.68 to 2.25 MPa) and 69.1% (from 9.1 to 2.82 MPa), respectively, in the normal and osteoporotic bone. Use of bone cement as a spacer with PI is a potential approach to decrease the bone stress in lumbar fusion and warrants further research.</p>","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37455472","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}
Pub Date : 2019-12-12DOI: 10.1007/s13246-019-00831-9
Michael Lawson, Georgia Parry, Mohamed K Badawy
{"title":"The use of patient drapes for staff dose reduction in fluoroscopically-guided interventions.","authors":"Michael Lawson, Georgia Parry, Mohamed K Badawy","doi":"10.1007/s13246-019-00831-9","DOIUrl":"10.1007/s13246-019-00831-9","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37453793","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}
Pub Date : 2019-12-10DOI: 10.1007/s13246-019-00828-4
Fereidoun Nowshiravan Rahatabad, Parisa Rangraz
The aim of this study was to improve reinforcement learning algorithm by combining artificial bee colony algorithm. The traditional method of reinforcement learning algorithm has a very low convergence rate due to random choices. An ant algorithm will help to make random choices in reinforcement learning more appropriate. This hybrid algorithm called the bee colony reinforcement (BCR) algorithm. The tip of the arm must reach a predetermined purpose by BCR algorithm. The results show that the BCR algorithm in the model has been able to reduce the time to reach the goal than the reinforcement learning algorithm (In average 12 steps faster). Also, the path for reaching the goal in the BCR algorithm was far more direct and shorter than the reinforcement learning algorithm. This method also detects the optimal path towards the goal.
{"title":"Combination of reinforcement learning and bee algorithm for controlling two-link arm with six muscle: simplified human arm model in the horizontal plane.","authors":"Fereidoun Nowshiravan Rahatabad, Parisa Rangraz","doi":"10.1007/s13246-019-00828-4","DOIUrl":"10.1007/s13246-019-00828-4","url":null,"abstract":"<p><p>The aim of this study was to improve reinforcement learning algorithm by combining artificial bee colony algorithm. The traditional method of reinforcement learning algorithm has a very low convergence rate due to random choices. An ant algorithm will help to make random choices in reinforcement learning more appropriate. This hybrid algorithm called the bee colony reinforcement (BCR) algorithm. The tip of the arm must reach a predetermined purpose by BCR algorithm. The results show that the BCR algorithm in the model has been able to reduce the time to reach the goal than the reinforcement learning algorithm (In average 12 steps faster). Also, the path for reaching the goal in the BCR algorithm was far more direct and shorter than the reinforcement learning algorithm. This method also detects the optimal path towards the goal.</p>","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37445594","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}
Pub Date : 2019-11-28DOI: 10.1007/s13246-019-00823-9
{"title":"Winning images from the Photography in Medical Physics (PiMP) competition","authors":"","doi":"10.1007/s13246-019-00823-9","DOIUrl":"https://doi.org/10.1007/s13246-019-00823-9","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"1191 - 1192"},"PeriodicalIF":0.0,"publicationDate":"2019-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00823-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42697577","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}
Pub Date : 2019-11-14DOI: 10.1007/s13246-019-00816-8
P. Barca, R. Lamastra, G. Aringhieri, R. Tucciariello, A. Traino, M. Fantacci
{"title":"Comprehensive assessment of image quality in synthetic and digital mammography: a quantitative comparison","authors":"P. Barca, R. Lamastra, G. Aringhieri, R. Tucciariello, A. Traino, M. Fantacci","doi":"10.1007/s13246-019-00816-8","DOIUrl":"https://doi.org/10.1007/s13246-019-00816-8","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"1141 - 1152"},"PeriodicalIF":0.0,"publicationDate":"2019-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00816-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47811977","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}
Pub Date : 2019-11-14DOI: 10.1007/s13246-019-00808-8
A. Kejda, D. Cutajar, M. Weaver, M. Petasecca, A. Rosenfeld
{"title":"A novel quality assurance system for eye plaque brachytherapy","authors":"A. Kejda, D. Cutajar, M. Weaver, M. Petasecca, A. Rosenfeld","doi":"10.1007/s13246-019-00808-8","DOIUrl":"https://doi.org/10.1007/s13246-019-00808-8","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"1109 - 1115"},"PeriodicalIF":0.0,"publicationDate":"2019-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00808-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42094805","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}
Pub Date : 2019-11-14DOI: 10.1007/s13246-019-00817-7
D. Little
{"title":"Image quality improvement for medium and large field of view Elekta XVI scans","authors":"D. Little","doi":"10.1007/s13246-019-00817-7","DOIUrl":"https://doi.org/10.1007/s13246-019-00817-7","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"1153 - 1164"},"PeriodicalIF":0.0,"publicationDate":"2019-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00817-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46840607","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}
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