Load a hand CT study straight from your discharge disc or imaging portal and inspect it in the browser, slice by slice, without installing anything. The tool is built around the questions a hand CT actually answers — “how far into the joint does this fracture line run”, “is the thumb base fragment still lined up”, “has this metacarpal healed straight” — and keeps every file on your own device the whole time.
Load Your Hand CTDrop the hand CT export, ZIP included, onto the uploader and it separates the small-field-of-view acquisition into its bone-kernel and soft-tissue-kernel reconstructions automatically.
Page through the sub-millimeter slices, pull up a sagittal or coronal cut through the metacarpal base or phalanx, and lay a caliper across a displaced fragment or a widened CMC joint space.
Each model separately checks for intra-articular extension, rotational malalignment, and hardware loosening, and Claude writes up the combined findings as one summary you can bring to a hand surgeon.
Most hand fractures are diagnosed and treated from plain films alone, but a small set of injuries need the extra detail CT provides. A Bennett fracture — a dorsal fragment sheared off the base of the thumb metacarpal while the rest of the joint subluxes with the pull of the abductor pollicis longus — often needs CT to show exactly how much of the joint surface is involved and how displaced the fragment is, which changes whether a surgeon pins it closed or opens it. A Rolando fracture, the comminuted three-part cousin of the Bennett pattern, is frequently underestimated on a two-view film; thin CT slices reveal the true number of fragments and how much the articular surface is stepped or gapped. The same logic applies to phalangeal intra-articular fractures at the PIP or DIP joint, where CT measures the percentage of joint surface involved and the amount of step-off, both of which drive the choice between splinting, pinning, or open reduction.
CT is also the study that settles a metacarpal neck or base fracture when the rotational alignment of the finger is in question, because a subtle twist that a plain film misses shows up clearly as scissoring on a coronal reformat. Once treatment is underway, CT confirms whether K-wires or a plate sit where they were placed, checks for early callus at the fracture line, and, when healing stalls, distinguishes a slow union from a true nonunion. Chronic thumb or finger base pain after an old fracture is frequently worked up with CT to grade CMC joint arthritis and to measure any residual malunion or rotational deformity before a corrective osteotomy or joint reconstruction is planned.
A hand CT is acquired as a small-field-of-view helical volume of sub-millimeter axial slices centered on the metacarpals and phalanges, then reconstructed twice from that same raw data: once on a sharp bone kernel that sharpens cortical margins and fine fracture lines in these small bones, and once on a smoother soft-tissue kernel for the surrounding tendons and skin. Because the field of view is narrow and the voxels are correspondingly small, the scanner or the viewer can reformat that single axial pass into sagittal and coronal planes through a specific joint — the thumb CMC, an MCP, a PIP — at a resolution a body CT protocol would not need.
The browser’s Canvas API handles decoding and drawing on its own. The series sits in IndexedDB locally until you decide to delete it.
Skip desktop imaging software entirely. Open a browser tab, drop in the hand CT export, and the small-field series is ready in Chrome, Firefox, Safari, or Edge.
Slide or key through every thin slice, then switch to a sagittal or coronal reformat the moment a fracture line through the thumb base or a finger joint reads more clearly from that angle.
Toggle a preset sharpened for the tiny cortical margins of the metacarpals and phalanges against one tuned for tendon and skin, both on the same slice.
Draw a caliper across a stepped joint surface at the thumb base or a finger joint and read the distance in millimeters, the same unit the radiology report uses.
Step through post-fixation slices to see where a K-wire crosses the fracture line or how a plate sits along the metacarpal shaft.
Hand CT reports lean on a handful of recurring phrases. “Intra-articular extension” means the fracture line crosses into the joint surface rather than stopping in the shaft, which is the detail that most often shifts treatment from a splint to surgery. “Step-off” and “gapping” are reported in millimeters and describe, respectively, how much the joint surface is offset vertically and how far apart two fragments have separated. “Comminution” means the bone has broken into more than two pieces, common in a Rolando fracture at the thumb base. “Malunion” describes a fracture that has healed with the bone in the wrong position — shortened, angulated, or rotated — while “nonunion” means the fracture line has not bridged with new bone within the expected time. A post-fixation report covers “hardware position”, checking the K-wire or plate against where it was placed and flagging any lucent margin that would point to early loosening.
The small cortical bone of the hand is exactly where CT excels: fracture lines, joint step-off, fragment count, and hardware position all read clearly off a slice. Ask the same slice about the collateral ligaments, the volar plate, or the flexor and extensor tendons, and it falls short — those blend into a similar soft-tissue gray that only separates on MRI's contrast-weighted sequences. A collateral ligament tear or a tendon laceration can look entirely unremarkable on a CT slice even when it is the real injury. That gap is why an intra-articular finger fracture gets its bone worked up on CT, with an MRI added when a concurrent ligament or tendon injury still needs an answer.
Yes, with no cap on slices or on how long you keep browsing a hand study. Credits, $10 per session, only apply once you send it to the AI panel for a read.
Yes. Bring up the thumb CT under bone windowing and scroll the axial and coronal planes at the first metacarpal base to see fragment count, joint step-off, and how far the shaft has subluxed relative to the trapezium.
Yes, a caliper tool lets you draw across the offset joint surface on the axial, sagittal, or coronal reformat and reads the distance in millimeters, matching how a report describes intra-articular step-off.
No. Tendons, the volar plate, and collateral ligaments just don’t separate out on CT the way they do on MRI, even though CT reads the small bones of the hand extremely well. Keep MRI in the plan whenever those soft-tissue structures are the concern.
Every DICOM file is decoded and drawn locally in your browser tab. Close the tab or clear site data and the study disappears — none of it was ever uploaded.
Yes. Pull up the post-fixation CT and scroll the axial and sagittal planes around the metacarpal or phalanx, checking hardware position against the fracture line and joint surface.
See supported file and archive formats → for the complete list.
Because a small-field hand CT is captured as a genuine volumetric scan, it folds cleanly into MPR and 3D without losing detail. Pointing out fragment separation at the thumb base, a rotational deformity along the metacarpal shaft, or a K-wire’s path is simply faster on a spinning 3D render than describing a stack of flat slices — how crisp that render looks still comes down to the slice thickness, spacing, and kernel the scanner used going in.
Learn how 3D DICOM viewing worksOn Analyze My Hand, the viewer helps you review hand and finger scans and understand fracture, joint, ligament, pulley, tendon, and arthritis-related report language.
Review finger fractures, metacarpal fractures, dislocations, volar plate injuries, mallet finger, jersey finger, thumb UCL tears, pulley injuries, and hand arthritis.
Hand imaging can involve subtle alignment, tiny avulsion fragments, and narrow tendon spaces. The linked guides help you connect those details to the structures named in the report.