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A cone-beam CT dental scanner presented as a sculptural object on a plinth in a gallery white room under museum lighting

19 Sep The Instrument Enters the Laboratory: A Donated Cone-Beam Scanner and the Craft of Studying What We See

Posted at 11:38h in Dental Imaging by Raymond 0 Comments
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In late July 2026, Carestream Dental announced a strategic alliance with the ADA Forsyth Institute, sealed by the donation of a state-of-the-art cone-beam computed tomography system to the institute's clinical arm. It is easy to read that as a press release. It is more interesting...

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A compact handheld portable X-ray device shown as luminous framed art against a gallery white wall under museum lighting

17 Sep The X-Ray That Fits in a Bag: NASA’s Portable Imaging Trials and the Craft of Radiography Far From Any Hospital

Posted at 10:38h in Dental Imaging by Raymond 0 Comments
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A broken bone or a cracked tooth a quarter-million miles from the nearest hospital is a problem of imaging before it is a problem of medicine. To answer it, NASA's Glenn Research Center has been testing portable, handheld X-ray systems built to work in a...

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A panoramic dental radiograph shown as framed art, the sweeping jaw glowing, with the bright dense ribbon of cortical bone along the lower mandibular border drawn out as the subject

16 Sep The Bone at the Bottom of the Frame: How a Panoramic X-Ray Quietly Screens for Osteoporosis

Posted at 10:40h in Dental Imaging by Raymond 0 Comments
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A panoramic radiograph is ordered to survey the teeth, the jaws, the developing third molars - and along the lower border of the mandible it records something no one asked it to. The inferior cortex of the jaw, that bright ribbon of dense bone at...

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A translucent three-dimensional dental volume shown twice as one form split by an invisible seam into two subtly different luminous readings, one warm and one cool

15 Sep Two Energies, One Scan: How Spectral CBCT Tells Bone From Metal

Posted at 13:12h in Dental Imaging by Raymond 0 Comments
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A conventional cone-beam scan measures one thing: how strongly each speck of tissue absorbs an X-ray beam. But absorption alone is ambiguous - a sliver of dense enamel and a whisper of metal can cast the very same grey. Spectral, dual-energy CBCT reads two different...

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A translucent molar seen in three dimensions with its branching internal canal system glowing faintly inside, a delicate extra canal becoming visible behind a larger one

14 Sep The Hidden Architecture of a Tooth: What Cone-Beam CT Reveals That a Flat Radiograph Cannot

Posted at 10:37h in Dental Imaging by Raymond 0 Comments
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For a century the radiograph told us almost everything about a tooth - and quietly kept one secret. Pressing a three-dimensional root system flat onto a single plane, it overlapped canals, hid the ones tucked directly behind others, and turned a fused, ribbon-like root into...

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A single translucent tooth shown as a colour surface shell perfectly overlaid on a faint glowing interior of root and structure, aligned as one object

13 Sep One Mouth, Two Truths: The Craft of Fusing an Intraoral Scan With a Radiograph

Posted at 10:37h in Dental Imaging by Raymond 0 Comments
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The intraoral scanner records the mouth as it looks - a flawless colour surface, and nothing beneath it. The radiograph records the mouth as light passes through it - the roots, the bone, the hidden lesion - and almost nothing of the surface. Each is...

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A luminous tooth casting a soft graduated shadow with a fading penumbra edge, lit by a small glowing rectangular source above

12 Sep The Blur Built Into Every X-Ray: Focal Spot Size, Penumbra, and the Geometry of a Sharp Radiograph

Posted at 10:38h in Dental Imaging by Raymond 0 Comments
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Every dental radiograph carries a blur that no detector, no software, and no amount of retaking can fully remove - because the X-ray source is not a point of light but a small glowing area on a metal target, and every point on that area...

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Three dental x-ray detectors displayed as artworks on brass museum plinths: two rigid corded solid-state sensors and one thin flexible phosphor plate.

04 Sep Three Ways to Catch a Photon: CCD, CMOS, and Phosphor Plates Compared

Posted at 10:39h in Dental Imaging by Raymond 0 Comments
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Every digital intraoral image begins with a decision made in silicon or phosphor: how to turn an x-ray photon into a number. There are three answers in common use, and each one quietly shapes what the radiograph can and cannot show....

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A single pale cube on a brass museum plinth engraved with a number that appears to shimmer and double, presented as an artwork whose value cannot be trusted.

03 Sep The Number That Lies: Why a CBCT’s Gray Values Are Not True Hounsfield Units

Posted at 10:37h in Dental Imaging by Raymond 0 Comments
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On a medical CT, the number in a voxel is a promise: water reads zero, cortical bone reads a thousand, and the scale means the same thing tomorrow as today. On a cone-beam scan, the same-looking number keeps no such promise - and mistaking one...

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A blank digital x-ray sensor panel presented like a primed empty canvas on a brass easel under museum lighting, its surface a faint grain of countless cells.

01 Sep The Sensor’s Fingerprint: Dark Current, Fixed-Pattern Noise, and the Flat-Field Correction That Makes a Detector Honest

Posted at 10:38h in Dental Imaging by Raymond 0 Comments
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No two pixels on a digital sensor are born equal. Each carries its own faint bias, its own gain, its own quiet defect - and unless the detector first learns and subtracts that fingerprint, the pattern it prints onto every image is its own, not...

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