Glossary
PowerScribe
PowerScribe is a family of radiology reporting products in which a radiologist dictates an imaging report by voice. It began as a Nuance dictation application, and Microsoft completed its purchase of Nuance in 2022, so Microsoft now sells the line.
Updated October 16, 20265 cited facts, each traced to its source
Also called PowerScribe One, PowerScribe 360.
PowerScribe is a clinical reporting system for radiology. A radiologist reads an X-ray, CT scan or MRI, then dictates the report, and the software turns the speech into text that goes into the patient's record. It is sold to hospitals and imaging practices, not to individuals. The two names you will see most are PowerScribe One, the current cloud product, and PowerScribe 360, the earlier reporting platform.
PowerScribe began as a hospital dictation application
The product line started as a dictation tool. Nuance Communications' Dictaphone unit sold the Dictaphone PowerScribe application to hospitals. In 2007, one plan at Yale-New Haven Hospital aimed to cut report turnaround for more than 365,000 reports a year 1. That is the scale that makes dictation speed matter in radiology: a faster report reaches the referring doctor sooner.
Microsoft later bought the company. Microsoft announced that it had completed its acquisition of Nuance Communications on March 4, 2022 2. Since then, Microsoft has sold and supported the PowerScribe products.
Later versions used Nuance's Dragon Medical speech engine
PowerScribe 360 was built on the same speech technology as Nuance's clinical dictation product. In 2013, Nuance said that the latest version of the platform "is built using the same technology as Dragon Medical 12" 3. In 2015, the release of version 3.0 said that it "incorporates the Nuance Dragon Medical speech recognition engine" 4.
These are vendor announcements from the release dates. They describe which engine was used, not how accurate it was in a hospital. For accuracy, you need a test on your own report types.
PowerScribe One replaces local voice profiles with cloud speech
The current product, PowerScribe One, uses cloud-based recognition. Microsoft's help describes its speech as "Cloud speech harnesses award-winning recognition with no local profiles to train or maintain" 5.
Desktop dictation software often asks each user to train a voice profile on their own machine. Cloud speech moves that work to the vendor's service, so the radiologist does not have to create and maintain a local profile. The trade-off is that the software depends on a network connection to the vendor's cloud.
| Name | Era | Speech engine | Where it stands now |
|---|---|---|---|
| Dictaphone PowerScribe | Sold by 2007 | Nuance dictation application | Sold by Nuance, then Microsoft |
| PowerScribe 360 | 2013 to 2015 releases | Built on Dragon Medical technology | Earlier reporting platform |
| PowerScribe One | Current | Cloud speech, no local profiles | Current product, sold by Microsoft |
How PowerScribe relates to consumer dictation
PowerScribe is not a general dictation app. It is built around radiology reports, while tools such as Dragon NaturallySpeaking are built for general writing on a desktop. The basics of good dictation still apply: speak whole sentences, say punctuation clearly, and proofread the result. Our guide to professional dictation software for specialist fields compares the clinical and legal tools, and the dictation software overview explains the general options.
Clinical software has one more layer. The report has to match the hospital's templates and terminology, so an engine that handles medical words well still needs a reviewed vocabulary. The related term Dragon Medical One names Nuance's clinical version of the same engine family, and Nuance Communications is the company behind the early PowerScribe releases.
Related terms
- Dictation software: programs that turn speech into text.
- Cloud dictation: recognition that runs on a vendor's servers.
- Custom vocabulary: a word list that teaches the engine your terms.
- Voice profile: the per-speaker model that older dictation software needed.
- AI dictation: dictation that adds AI editing or summaries after recognition.
Guides that cover it
Evidence
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Related terms
- Dictation Software: How to Choose the Right AppThe topic this term belongs to
- AI dictationAI dictation is dictation in which a language model edits the recognized text after speech recognition, removing filler words, fixing punctuation and sometimes rewording a sentence. It can change your meaning, so check the result before you send it.
- Bring your own key (BYOK)Bring your own key (BYOK) is a setup in which you supply your own API key for an AI or speech provider. The app then sends requests through your account with that provider, so your agreement with the provider governs the data.
- Cloud dictationCloud dictation sends your recorded speech to a remote server, which recognizes it and returns the text. It usually needs an internet connection, and your audio leaves your device, so check the provider's policy before you dictate sensitive material.
- Custom vocabularyA custom vocabulary is a list of words, names and phrases that you add to dictation software so it recognizes and spells them as you intend. It matters most for names, jargon and product terms the recognizer has not learned.
- Dictation softwareDictation software is a program that recognizes your speech and types the words where your cursor is, as you say them. It comes built into many phones and computers and is also sold as separate apps.
- Dragon Medical OneDragon Medical One, abbreviated DMO, is Nuance's speech recognition product for clinicians who dictate notes into health records. Microsoft now combines it with DAX Copilot in a product called Dragon Copilot.
- Dragon NaturallySpeakingDragon NaturallySpeaking, usually called Dragon, is a speech recognition program for dictating text on a computer. Dragon Systems released it in 1997, and Nuance has sold it in several editions since.
- Dragon Professional AnywhereDragon Professional Anywhere is a subscription edition of Dragon that Nuance sells for professional and enterprise users. It is often shortened to Dragon Anywhere, a name that also belongs to Nuance's mobile app, so check which product a listing means.
- Free tierA free tier is the no-cost version of a dictation app, with limits such as a weekly word cap, fewer modes or no AI processing. Read those limits before you rely on it, because a free plan can run out in the middle of your work.
- Nuance CommunicationsNuance Communications was a speech technology company best known for the Dragon family of speech recognition products. Microsoft announced that it had completed its acquisition of Nuance on March 4, 2022.
- Perpetual licenseA perpetual license is a software license you pay for once. It lets you keep using that version without renewing. Updates, support and new major versions are often separate, time-limited or paid extra.
- Voice profileA voice profile is the set of files that dictation software keeps for one user, with settings such as the microphone they use and their custom words. It is not the same as speaker recognition, which identifies who is speaking.