3D ACCU-I-TOMO XYZ SLICE VIEW TOMOGRAPH, MODEL MCT-1F8/F17
K073695 · J. Morita USA, Inc. · JAK · Apr 9, 2008 · Radiology
Device Facts
Record ID
K073695
Device Name
3D ACCU-I-TOMO XYZ SLICE VIEW TOMOGRAPH, MODEL MCT-1F8/F17
Applicant
J. Morita USA, Inc.
Product Code
JAK · Radiology
Decision Date
Apr 9, 2008
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1750
Device Class
Class 2
Indications for Use
MCT-1EX-1F8/F17 is intended to be used for head and neck three dimensional X-ray Computed Tomography by a limited, cone-shaped x-ray beam projected onto a flat panel X-ray detector, to be operated and used by doctors, dentists, properly licensed professionals and other legally qualified professionals. Applications include diagnosis for Temporal, Nasal, Orbita, Maxilla, Mandibula, Cerviales, Cranium and Basicranium area.
Device Story
Device is a cone-beam X-ray CT system for head and neck imaging. It acquires 360-degree rotational X-ray sequences using a flat panel detector (FPD). Data is stored in a 3D matrix, reconstructed via PC-based image processing, and displayed as 2D and 3D images. Operated by physicians, dentists, or technologists in clinical settings. Output assists in diagnosis of temporal, nasal, orbital, maxillary, mandibular, cervical, and cranial areas. Benefits include high-fidelity, high-resolution visualization of anatomical structures for diagnostic support.
Clinical Evidence
Bench testing only. No clinical data provided. Substantial equivalence is based on technological comparison and performance specifications meeting international standards.
Technological Characteristics
Cone-beam X-ray CT system. Components: rotating arm, main body, base, PC, and software. FPD receptors (Hamamatsu or Varian). Linear-shaped C-arm. Connectivity: PC-based reconstruction and display. Sterilization: Not applicable (non-invasive imaging).
Indications for Use
Indicated for head and neck, ENT, and dento-maxillofacial X-ray imaging for diagnostic support. Used by physicians, dentists, and X-ray technologists. No specific age or gender contraindications listed.
Regulatory Classification
Identification
A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Predicate Devices
3D Accu-I-tomo XYZ Slice View Tomograph MCT-1EXF (K052587)
Submission Summary (Full Text)
{0}------------------------------------------------
K073645
APR - 9 2008
:
## 510(k) SUMMARY J. Morita USA Inc.'s 3D Accu-I-tomo XYZ Slice view Tomograph Model : MCT-1EX-1F8/F17
## 1. Submitter Name and Address with Phone/Fax :
| Registration No. 2081055 | Registration No. 3002807636 |
|--------------------------|-----------------------------|
| Initial Distributor: | Manufacturer: |
| J. Morita USA, Inc. | J. MORITA MFG. CORP. |
| 9 Mason | 680 Higashihama Minami-cho |
| Irvine, CA 92618 | Fushimi-ku, Kyoto |
| USA | Japan 612-8533 |
| Telephone: 949-581-9600 | +81-75-611-2141 |
| Facsimile: 949-581-9688 | +81-75-605-2353 |
#### 2. Contact Person
Keith A. Barritt Fish & Richardson P.C. 1425 K Street, N.W. Suite 1 100 Washington, DC 20005 Phone: (202) 783-5070 Facsimile: (202) 783-2331
#### 3. Date summary prepared: January 24, 2008
whose details are shown in Table-A below.
···
-
- 4. Device Name:
Trade or Proprietary Name: 3D Accu-I-tomo XYZ Slice view tomograph Model: MCT-1EX-1F8/F17 Note: The name is abbreviated to MCT-1EX-1F8/F17 in the 510(k) submission , and includes two kinds of actual models, MCT-1EX-1F8 and MCT-1EX-1F17
| Common Name: | Cone beam x-ray CT |
|----------------------|-----------------------------------------------------|
| Classification Name: | Computed tomography x-ray system<br>(21CFR892.1750) |
| Product Code: | JAK |
{1}------------------------------------------------
| Division | Actual model number | Main differences | | |
|--------------------|---------------------|----------------------------------------------------|----------------------|-----------------------------|
| | | Size of<br>radiographic<br>area size<br>D x H (mm) | FPD used | Rotation<br>arm |
| This<br>submission | MCT-1EX-1F8 | 40x40<br>60x60<br>80x80 | Made by<br>Hamamatsu | Linear-<br>shaped-<br>C-arm |
| | MCT-1 EX-1F17 | Note-1 | Made by<br>Varian | |
| The<br>predicate | MCT-1EXF | 40x40<br>60x60 | Made by<br>Hamamatsu | Round-shaped<br>C-arm |
| The MCT-1EX-1F8/F17 includes the actual model numbers specified with the main | |
|-------------------------------------------------------------------------------|--|
| differences as shown in Table-A below. | |
Note-1: Selectable between 170 x 120mm and 40 x 40mm. (Diameter x Height)
Table-A Actual model numbers in MCT-1EX-1F8/F17
## 5. Substantial Equivalency is claimed against the following devices:
3D Accu-I-tomo XYZ Slice View Tomograph MCT-1EXF (K052587)
#### 6. Description of the device:
The MCT-1EX-1F8/F17 is an x-ray imaging device that acquires 360 degree rotational sequence of the head and neck areas, mainly for dentistry. The imaging data are once stored at three dimensional matrix of the examined volume, and are reconstructed by image processing through the Personal Computer, then finally displayed as both two and three dimensional images on the monitor.
It consists of rotation arm part, main body part, base part and accessories including personal computer and software.
This MCT-1EX-1F8/F17 is a slightly modified device from the MCT-1EXF ( K#052587) of J.MORITA MFG. CORP replacing the solid state x-ray imaging device of "Flat Panel Detector (FPD)" with some other additional modifications.
As the main hardware and software are used common, this new MCT-IEX-1F8/F17reserves the same general intended use, similar principles of operation, and similar technological characteristics as the predicate device MCT-1EXF. It is selfexplanatory that the MCT-1EX-1F8/F17 is substantially equivalent to MCT-1EXF.
2 / 4
{2}------------------------------------------------
#### 7. Intended Use
#### Intended use
MCT-1EX-1F8/F17 is intended to be used for head and neck three dimensional X-ray Computed Tomography by a limited, cone-shaped x-ray beam projected onto a flat panel X-ray detector, to be operated and used by doctors, dentists, properly licensed professionals and other legally qualified professionals.
Applications include diagnosis for Temporal, Nasal, Orbita, Maxilla, Mandibula, Cerviales, Cranium and Basicranium area.
#### 8. Safety and effectiveness of the device
### SUBSTANTIAL EQUIVALENCE
The MCT-1EX-1F8/F17 covered by this submission is developed from our legally marketed device, MCT-1EXF (K#052587), modified slightly by replacing FPD to enlarge the radiographic area by using larger field of FPD, without any significant changes for the other components or performances. The comparison including the differences are described at the Table-1 titled " Comparison chart: MCT-1EX-1F8/F17 to MCT-1EXF" at Attachment 5 of this submission.
As is shown in the following comparison summary chart and table , MCT-1EX-1F8/F17 is substantially equivalent to MCT-1EXF because they have similar general intended uses, technological characteristics and operating principles. As described above, any differences in the technological characteristics do not raise any new issues of safety or effectiveness.
| | This new submission | Predicate device | Difference |
|----------------------|---------------------------------------------------------------------------------------------|------------------------------------------------------------------------------|-----------------------|
| Name of<br>model | MCT-1EX-1F8/F17 | MCT-1EXF | Different |
| Manufacturer | J.MORITA<br>MFG. CORP. | J.MORITA<br>MFG. CORP. | Identical |
| Construction | 1)Slightly modified<br>Rotating arm<br>2) The same conventional<br>base/chair/support tower | 1)Conventional<br>Rotating arm<br>2)Conventional<br>base/chair/support tower | Similar |
| Image<br>Receptor | Flat panel detecter | Flat panel detecter | Same |
| Performance<br>spec. | International standards | International standards | Similar |
| Mechanical | Morita made mechanism | Morita made mechanism | Similar |
| Electrical | Morita made electric circuit | Morita made electric circuit | Similar |
| Software | Morita made software | Morita made software | Slightly<br>Different |
| Testing | Mainly done by VDE | Mainly done by VDE | Same |
## Table-1 Comparison summary chart
40
{3}------------------------------------------------
# Table-2 Comparison summary table
FDA file reference number
Attachment inside notification submission file 510k FDA website print out.
| TECHNOLOGICAL CHARACTERISTICS | Comparison result | |
|--------------------------------------------------|-------------------|--------|
| Model name of Predicate Device | MCT-1EXF | |
| 510(k) number of Predicate Device | K052587 | |
| Indication for use | Identical | |
| Target population | Similar | |
| Design | Slightly changed | Note-1 |
| Materials | Slightly changed | Note-2 |
| Performance | Slightly changed | Note-3 |
| Sterility | Similar | |
| Biocompatibility | Similar | |
| Mechanical safety | Similar | |
| Chemical safety | Similar | |
| Anatomical sites | Similar | |
| Human factors | Similar | |
| Energy used and/or delivered | Similar | |
| Compatibility with environment and other devices | Similar | |
| Where used | Identical | |
| Standards met | Identical | |
| Electrical safety | Identical | |
| Thermal safety | Identical | |
| Radiation safety | Identical | |
Note- l
This new devices are designed to enlarge the sizes of radiographic areas, so that some modifications are done over the arm assembly, FPD and software or else Note-2
The new larger size FPD is introduced.
Note-3
The enlarged sizes of radiographic areas are obtained with higher image quality such as high speed, high fidelity or high resolution other than standard mode.
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized caduceus symbol, which is a staff with two snakes coiled around it. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular pattern around the caduceus symbol. The logo is black and white.
## DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room - WO66-G609 Silver Spring, MD 20993-0002
MAY 20 2010
J. Morita USA. Inc. % Mr. Keith A. Barritt, Attorney Fish & Richardson P.C. 1425 K St. N.W., Suite 1100 WASHINGTON DC 20005
Re: K073695
Trade/Device Name: 3D Accu-I-tomo Slice View Tomograph, Model MCT-1EX-1F8/F17 Regulation Number: 21 CFR 892.1750 Regulation Name: Computed tomography x-ray system Regulatory Class: II Product Code: JAK Dated: March 24, 2008 Received: March 25, 2008
Dear Mr. Barritt:
This letter corrects our substantially equivalent letter of April 9, 2008.
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into class II (Special Controls), it may be subject to such additional controls. Existing major regulations affecting your device can be found in Title 21, Code of Federal Regulations (CFR), Parts 800 to 895. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must or mry vith all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801 and 809); medical device reporting (reporting of
{5}------------------------------------------------
medical device-related adverse events) (21 CFR 803); and good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820). This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Parts 801 and 809), please contact the Office of In Vitro Diagnostic Device Evaluation and Safety at (301) 796-5450. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely vours.
Donald J. Trump
Donald J. St.Pierre Acting Director Division of Radiological Devices Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health
Enclosure
{6}------------------------------------------------
## Indications for Use
510(K) Number : unknown
Device Name: 3D Accu-I-tomo XYZ Slice view tomograph, Model: MCT-1EX-1F8/F17
Indications for Use:
The Model MCT-1EX-1F8/F17 is a x-ray imaging device that acquires a 360 degree rotational sequence of the head and neck areas, including the ENT and dento maxillofacial areas, for use in diagnostic support. The device accomplishes this task by reconstructing a three dimensional matrix of the examined volume and producing two dimensional views of this volume, displaying both twor and threedimensional images.
The device is operated and used by physicians, dentists and x ray technologists.
Prescription Use
(Par2! CFR801 Subpert D)
AND/OR
Over-The-Counter Use (Part21 CFR807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED Concurrence of CDRH, Office of Device Evaluation(ODE)
#### (Division Sign-Off)
Division of Anesthesiology, General Hospital, Infection Control, Dental Devices
510(K) Number :
Prescription Use (Part21CFR801.109)
or
Over-The-Counter Use (Optional Format 1-2-96)
hozi K. Wtz
(Division Sign-Off) Division of Reproductive, Abdominal and Radiological Devices No73695 510(k) Number
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.