Journal of nuclear medicine technology最新文献_第5页

Motion Artifacts in SPECT Myocardial Perfusion Imaging. SPECT心肌灌注成像中的运动伪影。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.125.269853

Sara G Johnson

引用次数: 0

Single- Versus Dual-Time-Point Imaging for Transthyretin Cardiac Amyloid Using ^99mTc-Pyrophosphate. 使用99mtc焦磷酸盐对转甲状腺素心脏淀粉样蛋白进行单时间点与双时间点成像。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.124.269395

Wesley Ng, Kunthi Pathmaraj, Natalia Kovaleva, Aurora Poon, Peter Kench, Steven Meikle, Andrew Scott, Raef Boktor

{"title":"Single- Versus Dual-Time-Point Imaging for Transthyretin Cardiac Amyloid Using 99mTc-Pyrophosphate.","authors":"Wesley Ng, Kunthi Pathmaraj, Natalia Kovaleva, Aurora Poon, Peter Kench, Steven Meikle, Andrew Scott, Raef Boktor","doi":"10.2967/jnmt.124.269395","DOIUrl":"10.2967/jnmt.124.269395","url":null,"abstract":"Nuclear medicine scintigraphy using 99mTc-pyrophosphate has proven valuable in the diagnosis of cardiac transthyretin amyloidosis in recent years. However, there is still confusion over the optimal imaging time points. The American Society of Nuclear Cardiology has recommended different imaging time points over the last decade. We aimed to determine whether single- or dual-time-point imaging is required for reporting purposes and which time point would be the most appropriate if a single time point was to be considered. Methods: Cardiac amyloid scans using 99mTc-pyrophosphate acquired from 2017 to 2023 were retrieved from our Picture Archiving and Communications System. Scans with static views and SPECT/CT images of the chest for both imaging time points, at 1 h (early) and 3 h (delayed) after injection, were included. Each study was independently read by 3 nuclear medicine physicians. Original clinical reports using both imaging time points were used as a reference to calculate the accuracy of a single time point. Results: In total, 70 patients were included in this study. Reports of cardiac amyloid studies using any single-time-point imaging were highly sensitive, accurate, and specific. There was agreement among all readers. Of the 140 datasets reported by each reader, 4 scans were classified as equivocal, requiring more imaging for confident reporting. Conclusion: Single-time-point imaging showed an accuracy comparable to the dual-time-point imaging in diagnosing cardiac transthyretin amyloidosis. This was further validated by agreement among the 3 readers. Early time-point imaging is preferred, and additional delayed imaging can be acquired when the early result is equivocal.","PeriodicalId":16548,"journal":{"name":"Journal of nuclear medicine technology","volume":" ","pages":"140-145"},"PeriodicalIF":1.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143968142","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

Can an Abnormal Gastric Emptying Study Be Normal? 胃排空异常能正常吗？

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.124.269182

Ben Freiberg

引用次数: 0

Patient Motion During Cardiac PET Imaging. 心脏PET成像时患者的运动。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.125.269911

Sunil R Selvin, Erin Stevens, Mary Beth Farrell, Gary V Heller

引用次数: 0

¹⁸F-FDG Myocardial Uptake Related to Continuous Venovenous Hemodialysis: The Importance of Eliminating All Things Sweet. 与持续静脉-静脉血液透析相关的18F-FDG心肌摄取：排除所有甜食的重要性。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.124.268968

Reja E A Schaaf, Hein J Verberne, Dave A Dongelmans

引用次数: 0

Empowering Technologists, Elevating Care. 授权技术人员，提升护理水平。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04

Julie Dawn Bolin

引用次数: 0

Myocardial Sympathetic Innervation Imaging. 心肌交感神经成像。

IF 1.3

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.125.270093

Justin G Peacock, Mary Beth Farrell

引用次数: 0

The SNMMI/ACNM Practice Guideline for the Use of Radiopharmaceuticals 5.0. SNMMI/ACNM放射性药物使用实践指南5.0。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.125.269834

Kara Weatherman, Erin Elizabeth Grady, Nic Mastascusa, Sara Johnson, George H Hinkle, Richard Laforest, Chloee Wendorf, Kathy S Thomas

引用次数: 0

Illuminating the Hidden: Standardizing Cardiac MIBG Imaging for Sympathetic Dysfunction. 照亮隐藏：规范心脏交感功能障碍的MIBG成像。

IF 1.3

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.124.269436

Justin G Peacock, Haley Majot, Avani T Bansal, Patrick Neshiwat, Kelsy Dimeff, Kalpna Prasad

{"title":"Illuminating the Hidden: Standardizing Cardiac MIBG Imaging for Sympathetic Dysfunction.","authors":"Justin G Peacock, Haley Majot, Avani T Bansal, Patrick Neshiwat, Kelsy Dimeff, Kalpna Prasad","doi":"10.2967/jnmt.124.269436","DOIUrl":"10.2967/jnmt.124.269436","url":null,"abstract":"The heart's innervation relies on a delicate balance between the sympathetic and parasympathetic nervous systems, each using distinct neurotransmitters to regulate heart rate, contractility, and vascular tone. The sympathetic division primarily uses norepinephrine, whereas the parasympathetic division operates through acetylcholine. A range of diseases, through intrinsic and extrinsic mechanisms, can disrupt these neural pathways, resulting in autonomic dysfunction. This review highlights intrinsic causes such as dysautonomias, amyloidosis, diabetes mellitus, Parkinsonian syndromes, and Lewy body dementia, as well as extrinsic factors such as heart failure, myocardial ischemia, infarction, and drug-induced cardiotoxicity. This article examines the effects of various conditions on cardiac sympathetic innervation and highlights how 123I-radiolabeled metaiodobenzylguanidine (MIBG), a norepinephrine analog, can target the cardiac sympathetic nervous system for early detection and disease characterization. Currently, variability in cardiac 123I-MIBG imaging protocols across institutions leads to inconsistencies in image acquisition and interpretation, limiting the establishment of universal benchmarks for distinguishing normal from abnormal cardiac sympathetic innervation. To address this, we propose a simple, clinically useful, standardized protocol based on European Association of Nuclear Medicine guidelines and the AdreView Myocardial Imaging for Risk Evaluation in Heart Failure trial, incorporating both qualitative and semiquantitative methods for disease assessment and highlight cutoff values for some pathologies that can assist in visual interpretation. Standardizing these protocols will enhance the consistency, reliability, and diagnostic accuracy of 123I-MIBG imaging, improving clinical decision-making and optimizing patient outcomes.","PeriodicalId":16548,"journal":{"name":"Journal of nuclear medicine technology","volume":" ","pages":"90-100"},"PeriodicalIF":1.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12176009/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144030394","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}

引用次数: 0

Improvement of Anatomic Alignment and Image Quality Using a Respiratory Motion Reduction Block in Oncologic PET/CT. 使用呼吸运动减少块改善肿瘤PET/CT解剖对齐和图像质量。

IF 1

Journal of nuclear medicine technology Pub Date : 2025-06-04 DOI: 10.2967/jnmt.124.269096

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

{"title":"Improvement of Anatomic Alignment and Image Quality Using a Respiratory Motion Reduction Block in Oncologic PET/CT.","authors":"Hajime Ichikawa, Takayuki Shibutani, Toyohiro Kato, Tomoya Banno, Mitsuaki Terabe, Hideki Shimada","doi":"10.2967/jnmt.124.269096","DOIUrl":"10.2967/jnmt.124.269096","url":null,"abstract":"18F-FDG PET/CT is crucial for cancer diagnosis; however, respiratory motion often causes misregistration between PET and CT images. This study aimed to evaluate the impact of a custom-made respiratory motion reduction block (RRB) in reducing misregistration and improving image quality in 18F-FDG PET/CT. Methods: The RRB was developed to minimize the effects of respiratory motion. It is a pentagonal block made of Styrofoam designed to compress the upper abdomen. This study included 170 patients who underwent whole-body 18F-FDG PET/CT. Patients were categorized into 4 groups based on the CT and PET scanning technique used: a control free-breathing (FB) group (breath-holding [BH] CT without RRB and respiration-gated [RG] PET), a control RG group (BH CT without RRB with RG PET), a BH RRB group (BH CT with RRB), and a FB RRB group (FB CT with RRB). Various parameters, including the incidence rate and distance of anatomic misregistration, and signal-to-noise ratio, were measured and compared. Results: For the control FB, control RG, BH RRB, and FB RRB groups, the incidence rates of anatomic misregistration between PET and CT images were 47.1%, 27.5%, 34.0%, and 16.7%, respectively. The mean misregistration distances in these groups were 5.1 ± 6.0, 3.1 ± 5.5, 3.8 ± 6.2, and 1.3 ± 3.2 mm, respectively. Furthermore, the RRB improved the signal-to-noise ratio of the liver. Conclusion: The RRB effectively improved registration between PET and CT images. Our approach is cost-effective and provides respiratory motion suppression not only during PET but also during CT scans. The use of RRB with FB PET scanning was found to be more beneficial than respiratory gating.","PeriodicalId":16548,"journal":{"name":"Journal of nuclear medicine technology","volume":" ","pages":"146-151"},"PeriodicalIF":1.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557215","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