[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-ai-model-rebuilds-3d-heart-shape-from-sparse-mri-slices":10,"sections":34},{"siteName":4,"siteTagline":5,"publisherName":4,"contactEmail":6},"The Revision","Tech news, decoded.","editor@therevision.news",{"gaMeasurementId":8,"adsenseClientId":9},"G-ZW2MV82GYR","ca-pub-8533917693782264",{"article":11},{"id":12,"slug":13,"title":14,"dek":15,"body_md":16,"tags_json":17,"published_at":18,"created_at":19,"updated_at":20,"status":21,"review_note":22,"review_notes":23,"image_url":22,"persona_id":22,"persona_name":22,"section":24,"tags":25,"sources":29,"feedback":33,"feedback_at":22,"cost_usd":33,"total_tokens":33},10713,"ai-model-rebuilds-3d-heart-shape-from-sparse-mri-slices","AI Model Rebuilds 3D Heart Shape From Sparse MRI Slices","A new open-source framework turns a few flat cardiac MRI slices into a full 3D left-ventricle mesh without needing 3D training data.","A new framework called Local2Mesh builds a 3D model of the heart's left ventricle from just a handful of flat MRI slices, no 3D scan required.\n\nResearchers describe Local2Mesh in a paper posted to arXiv. The system starts with a template mesh and deforms it to match sparse 2D contours traced from cardiac MRI slices. It first corrects for the fact that those slices are rarely perfectly aligned, a problem the paper calls inter-slice misalignment. A plane-aware Local Router then matches local image features to the nearest points on the template mesh instead of blending everything into one global signal. Tested on two public datasets, M&Ms-2 and ACDC, the method outperformed existing approaches at both reconstructing heart geometry and estimating function, and held up when transferred to a dataset it was not trained on.\n\nThat zero-shot transfer is the detail worth noting. Cardiac MRI is usually captured as a stack of flat slices rather than a true 3D volume, because full 3D scans are slower and more expensive, so most reconstruction methods are stuck working with sparse, misaligned data. A technique that generalizes across datasets without needing 3D mesh annotations could cut the manual-labeling burden that has kept this field small.\n\nStill, this is a benchmark result on public research datasets, not a clinical tool. Whether cardiologists trust a reconstructed mesh for diagnosis is a slower-moving question than whether it scores well on ACDC, and the code, posted on GitHub, is aimed at other researchers for now, not hospitals.","[\"ai\",\"medical-imaging\",\"cardiology\",\"open-source\"]","2026-10-07T04:00:00.000Z","2026-10-09T05:53:25.529Z","2026-10-09T05:53:29.969Z","published",null,[],"ai",[24,26,27,28],"medical-imaging","cardiology","open-source",[30],{"name":31,"url":32},"arXiv cs.AI","https:\u002F\u002Farxiv.org\u002Fabs\u002F2610.06052",0,{"sections":35},[36,40,45,50,55,60,64,69,74,78,83,88,93,98],{"name":37,"slug":24,"count":38,"latest_published_at":39},"AI",6517,"2026-10-08T04:00:00.000Z",{"name":41,"slug":42,"count":43,"latest_published_at":44},"Security","security",911,"2026-10-07T19:53:42.000Z",{"name":46,"slug":47,"count":48,"latest_published_at":49},"Policy","policy",474,"2026-10-07T18:23:21.000Z",{"name":51,"slug":52,"count":53,"latest_published_at":54},"Deals","deals",458,"2026-10-08T10:03:39.000Z",{"name":56,"slug":57,"count":58,"latest_published_at":59},"Hardware","hardware",223,"2026-10-08T08:30:04.000Z",{"name":61,"slug":62,"count":63,"latest_published_at":18},"Science","science",187,{"name":65,"slug":66,"count":67,"latest_published_at":68},"Consumer Tech","consumer-tech",175,"2026-10-08T09:16:05.000Z",{"name":70,"slug":71,"count":72,"latest_published_at":73},"Software","software",113,"2026-10-07T18:10:00.000Z",{"name":75,"slug":76,"count":72,"latest_published_at":77},"Startups","startups","2026-10-07T23:36:57.000Z",{"name":79,"slug":80,"count":81,"latest_published_at":82},"Dev Tools","dev-tools",105,"2026-10-07T16:59:11.000Z",{"name":84,"slug":85,"count":86,"latest_published_at":87},"General","general",61,"2026-10-07T22:00:24.000Z",{"name":89,"slug":90,"count":91,"latest_published_at":92},"Gaming","gaming",56,"2026-10-07T12:00:00.000Z",{"name":94,"slug":95,"count":96,"latest_published_at":97},"Reviews","reviews",33,"2026-10-05T11:57:17.000Z",{"name":99,"slug":100,"count":101,"latest_published_at":102},"How-To","how-to",8,"2026-10-05T09:00:00.000Z"]